/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* ── Color Palette ── */
  --color-primary: #2569f4;
  --color-primary-hover: #1d5ad4;
  --color-primary-light: rgba(37, 105, 244, 0.1);
  --color-primary-light-hover: rgba(37, 105, 244, 0.2);
  --color-primary-ring: rgba(37, 105, 244, 0.1);
  --color-primary-ring-md: rgba(37, 105, 244, 0.2);
  --color-primary-shadow: rgba(37, 105, 244, 0.3);
  --color-primary-shadow-lg: rgba(37, 105, 244, 0.4);
  --color-primary-shadow-sm: rgba(37, 105, 244, 0.05);
  --color-secondary: #8b5cf6;
  --color-dark: #222c3e;
  --color-white: #ffffff;
  --color-black: #000000;

  /* Semantic colors */
  --color-error: #ef4444;
  --color-error-dark: #dc2626;
  --color-error-bg: #fee2e2;
  --color-error-text: #991b1b;
  --color-error-border: #fca5a5;
  --color-success: #059669;
  --color-success-bg: #d1fae5;
  --color-success-text: #065f46;
  --color-success-border: #86efac;
  --color-warning: #d97706;
  --color-warning-bg: #fef3c7;
  --color-warning-border: #f59e0b;
  --color-info-bg: #dbeafe;
  --color-info-text: #1e40af;
  --color-info-border: #93c5fd;

  /* Badge colors */
  --color-badge-beginner-bg: #dbeafe;
  --color-badge-beginner-text: #1e40af;
  --color-badge-intermediate-bg: #fef3c7;
  --color-badge-intermediate-text: #92400e;
  --color-badge-advanced-bg: #fee2e2;
  --color-badge-advanced-text: #991b1b;
  --color-badge-easy-bg: #d1fae5;
  --color-badge-easy-text: #065f46;

  /* Terminal dot colors */
  --color-dot-red: #ef4444;
  --color-dot-yellow: #f59e0b;
  --color-dot-green: #10b981;

  /* Text */
  --text-primary: #1e293b;
  --text-secondary: #64748b;

  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;

  /* Borders */
  --border-color: #e2e8f0;

  /* ── Spacing ── */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* ── Border Radius ── */
  --radius-xs: 0.25rem;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-pill: 9999px;
  --radius-full: 50%;

  /* ── Shadows ── */
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.5);

  /* ── Typography ── */
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: 'Courier New', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.1rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;

  /* ── Layout ── */
  --container-max-width: 1200px;

  /* ── Transitions ── */
  --transition-fast: 0.2s;
  --transition-normal: 0.3s;

  /* ── Code Assistant ── */
  --code-sidebar-bg: var(--color-dark);
  --code-sidebar-text: var(--color-white);
  --code-sidebar-border: var(--border-color);
  --code-sidebar-hover: var(--color-primary-light-hover);
  --code-message-text: var(--color-white);
  --code-button-bg: var(--color-primary);
  --code-button-text: var(--color-white);
  --code-panel-bg: var(--bg-secondary);
  --code-panel-text: var(--text-primary);

  /* Legacy aliases (backward compatibility) */
  --primary-color: var(--color-primary);
  --primary-dark: var(--color-primary-hover);
  --secondary-color: var(--color-secondary);
  --accent-color: var(--color-primary);
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 0;
  margin: 0;
}

/* Navigation */
.navbar {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
}

.logo-analyt {
  color: var(--color-dark);
  /* Dark gray blue for "Analyt" */
}

.logo-iq {
  color: var(--color-primary);
  /* Vivid blue for "IQ" */
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
  padding: 0.5rem 0;
}

.nav-links a:hover {
  color: var(--color-primary);
}

.nav-links a.active {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
  position: relative;
}

.user-menu-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 1.25rem;
  padding: 0.5rem 0.75rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
}

.user-menu-toggle:hover {
  background: var(--bg-card);
  border-color: var(--primary-color);
}

.profile-picture-btn {
  border-radius: 50% !important;
  padding: 0 !important;
  overflow: hidden;
  border: 2px solid var(--border-color) !important;
  width: 40px !important;
  height: 40px !important;
  min-width: 40px !important;
}

.profile-picture-btn:hover {
  border-color: var(--primary-color) !important;
  transform: scale(1.05);
}

.nav-profile-picture {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.user-menu-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  z-index: 1000;
  overflow: hidden;
}

.user-menu-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-menu-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.user-menu-header .user-name {
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
}

.user-menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: 0.5rem 0;
}

.user-menu-item {
  width: 100%;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.875rem;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: background-color 0.2s;
}

.user-menu-item:hover {
  background: var(--bg-secondary);
}

.user-menu-item span:first-child {
  font-size: 1rem;
}

@media (max-width: 768px) {
  .user-menu {
    flex-direction: column;
    align-items: flex-start;
    margin-left: 0;
    width: 100%;
  }

  .user-menu-dropdown {
    right: auto;
    left: 0;
  }

  .user-name {
    font-size: 0.875rem;
  }
}

.user-name {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.btn-login {
  padding: 0.5rem 1.5rem;
  background: var(--primary-color);
  color: white;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.2s;
}

.btn-login:hover {
  background: var(--primary-dark);
}

/* Login Page Styles */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  padding: 2rem;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 3rem;
  width: 100%;
  max-width: 450px;
  box-shadow: var(--shadow-lg);
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-header h1 {
  color: var(--color-primary);
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.login-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.login-tab {
  padding: 0.75rem 1.5rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s;
}

.login-tab:hover {
  color: var(--text-primary);
}

.login-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.login-tab-content {
  display: none;
}

.login-tab-content.active {
  display: block;
}

.login-tab-content .form-group {
  margin-bottom: 1.5rem;
}

.login-tab-content .form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.875rem;
}

.login-tab-content .form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
}

.login-tab-content .form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.login-tab-content .form-group input::placeholder {
  color: var(--text-secondary);
}

.login-tab-content .form-group small {
  display: block;
  margin-top: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.btn-full {
  width: 100%;
  padding: 0.875rem;
  font-size: 1rem;
  margin-top: 1rem;
}

.error-message {
  margin-top: 1rem;
  padding: 0.75rem;
  background: var(--color-error-bg);
  border: 1px solid var(--color-error);
  border-radius: 0.5rem;
  color: var(--color-error-text);
  font-size: 0.875rem;
}

.login-footer {
  margin-top: 2rem;
  text-align: center;
}

.login-footer p {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  flex: 1;
  box-sizing: border-box;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--color-dark);
  border-color: var(--color-dark);
  color: var(--color-white);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* Sub-Tab Buttons (for leaderboard/progress views) */
.sub-tab-button {
  flex: 1;
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 0.5rem 0.5rem 0 0;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.sub-tab-button:hover {
  color: var(--color-primary);
  background: var(--color-primary-shadow-sm);
}

.sub-tab-button.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: -2px;
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.dashboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.dashboard-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-dark);
}

.dashboard-card h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.dashboard-card canvas {
  max-height: 300px;
}

/* Modules Grid */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.module-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.module-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-dark);
}

.module-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  min-height: 3.5rem;
}

.module-header h2 {
  font-size: 1.25rem;
  margin: 0;
  color: var(--text-primary);
  line-height: 1.4;
  flex: 1;
  margin-right: 0.75rem;
}

.module-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.module-badge.beginner {
  background-color: var(--color-badge-beginner-bg);
  color: var(--color-badge-beginner-text);
}

.module-badge.intermediate {
  background-color: var(--color-badge-intermediate-bg);
  color: var(--color-badge-intermediate-text);
}

.module-badge.advanced {
  background-color: var(--color-badge-advanced-bg);
  color: var(--color-badge-advanced-text);
}

.module-description {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  min-height: 3rem;
  line-height: 1.5;
  flex: 1;
}

.module-progress {
  margin-bottom: 1rem;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.progress-fill {
  height: 100%;
  background-color: var(--primary-color);
  transition: width 0.3s;
}

.progress-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.module-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
  align-items: center;
}

.module-actions .btn {
  flex: 1;
  text-align: center;
  font-size: 0.875rem;
  padding: 0.75rem 1rem;
  white-space: nowrap;
}

.module-details {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.module-details h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.module-details ul {
  list-style-position: inside;
  color: var(--text-secondary);
}

/* Practice Grid */
.practice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.practice-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.practice-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-dark);
}

.practice-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.practice-header h2 {
  font-size: 1.25rem;
  margin: 0;
  color: var(--text-primary);
}

.difficulty-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.difficulty-badge.easy {
  background-color: var(--color-badge-easy-bg);
  color: var(--color-badge-easy-text);
}

.difficulty-badge.medium {
  background-color: var(--color-warning-bg);
  color: var(--color-badge-intermediate-text);
}

.difficulty-badge.hard {
  background-color: var(--color-error-bg);
  color: var(--color-error-text);
}

.practice-description {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.practice-actions {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.solution {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.solution h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.solution pre {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  font-size: 0.875rem;
  color: var(--border-color);
}

.solution code {
  font-family: 'Courier New', monospace;
}

/* Resources */
.search-bar {
  margin-bottom: 2rem;
}

.search-bar input {
  width: 100%;
  max-width: 500px;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 1rem;
  background: var(--bg-card);
  color: var(--text-primary);
}

.search-bar input::placeholder {
  color: var(--text-secondary);
}

.resource-categories {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.category-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-secondary);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.875rem;
}

.category-btn:hover {
  background-color: var(--color-dark);
  color: var(--text-primary);
}

.category-btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.resource-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.resource-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-dark);
}

.resource-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.resource-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.resource-card p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.resource-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  display: inline-block;
}

.resource-link:hover {
  text-decoration: underline;
  color: var(--color-primary);
}

/* Code Assistant - Full Page Layout */
.code-assistant-fullpage {
  display: flex;
  height: calc(100vh - 60px);
  width: 100%;
  position: relative;
  background: var(--bg-primary);
}

.code-assistant-fullpage.sidebar-open .chat-main-area {
  margin-left: 360px;
}

/* Collapsed Sidebar (Always Visible) */
.collapsed-sidebar {
  width: 60px;
  background: var(--code-sidebar-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 0;
  gap: 1rem;
  z-index: 11;
  height: 100%;
  border-right: 1px solid var(--code-sidebar-border);
}

.sidebar-logo-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: all 0.2s;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-logo-toggle:hover {
  background: var(--color-primary-ring-md);
}

.sidebar-logo-toggle .logo-iq {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.sidebar-new-conversation-btn.collapsed {
  width: 40px;
  height: 40px;
  border-radius: 0.5rem;
  font-size: 1.5rem;
  margin: 0;
  background: var(--code-button-bg);
  color: var(--code-button-text);
}

.sidebar-new-conversation-btn.collapsed:hover {
  background: var(--primary-dark);
}

/* Conversation History Sidebar */
.conversation-sidebar {
  width: 300px;
  background: var(--code-sidebar-bg);
  border-right: 1px solid var(--code-sidebar-border);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
  z-index: 10;
  position: absolute;
  left: 60px;
  height: 100%;
}

.conversation-sidebar.hidden {
  transform: translateX(-100%);
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--code-sidebar-border);
}

.sidebar-header h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--code-sidebar-text);
}

.sidebar-header-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.sidebar-new-conversation-btn {
  background: var(--code-button-bg);
  color: var(--code-button-text);
  border: none;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  cursor: pointer;
  font-size: 1.25rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  line-height: 1;
  padding: 0;
}

.sidebar-new-conversation-btn:hover {
  background: var(--primary-dark);
  transform: scale(1.1);
}

.sidebar-toggle {
  background: none;
  border: none;
  color: var(--code-sidebar-text);
  opacity: 0.7;
  cursor: pointer;
  font-size: 1.25rem;
  padding: 0.25rem 0.5rem;
  transition: all 0.2s;
  border-radius: 0.25rem;
}

.sidebar-toggle:hover {
  opacity: 1;
  background: var(--code-sidebar-hover);
}

.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--code-sidebar-border);
  background: var(--code-sidebar-bg);
}

.sidebar-tab {
  flex: 1;
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  color: var(--code-sidebar-text);
  opacity: 0.7;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.sidebar-tab:hover {
  opacity: 1;
  background: var(--code-sidebar-hover);
}

.sidebar-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  background: var(--code-sidebar-hover);
  opacity: 1;
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  background: var(--code-sidebar-bg);
}

.conversation-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.conversation-item {
  padding: 0.75rem;
  background: var(--code-sidebar-hover);
  border: 1px solid var(--code-sidebar-border);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.conversation-item:hover {
  background: var(--code-sidebar-hover);
  border-color: var(--primary-color);
  opacity: 0.8;
}

.conversation-item.active {
  background: var(--code-sidebar-hover);
  border-color: var(--primary-color);
  color: var(--code-sidebar-text);
}


.conversation-item-content {
  flex: 1;
  min-width: 0;
  cursor: pointer;
}

.conversation-item-title {
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--code-sidebar-text);
}

.conversation-item-date {
  font-size: 0.75rem;
  opacity: 0.7;
  color: var(--code-sidebar-text);
}

.conversation-item-actions {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  flex-shrink: 0;
}

.conversation-action-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  transition: all 0.2s;
  opacity: 0.7;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--code-sidebar-text);
}

.conversation-action-btn:hover {
  opacity: 1;
  background: var(--code-sidebar-hover);
}

.conversation-item.active .conversation-action-btn:hover {
  background: var(--code-sidebar-hover);
}

.conversation-action-btn.delete-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  opacity: 1;
}

.conversation-action-btn.archive-btn:hover {
  background: rgba(16, 185, 129, 0.2);
  opacity: 1;
}

.no-conversations {
  text-align: center;
  color: var(--code-sidebar-text);
  opacity: 0.7;
  font-size: 0.875rem;
  padding: 2rem 1rem;
}

.sidebar-toggle-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.25rem;
  padding: 0.5rem;
  margin-right: 0.5rem;
  transition: color 0.2s;
}

.sidebar-toggle-btn:hover {
  color: var(--text-primary);
}

/* Main Chat Area */
.chat-main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  margin-left: 60px;
  transition: margin-left 0.3s ease;
  padding-bottom: 100px;
  /* Space for fixed input */
}

/* Chat Header - Single Definition */
.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.chat-header h1 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.header-left {
  display: flex;
  align-items: center;
}

/* Code Assistant Container */
.chat-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 120px);
  min-height: 600px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
}

.chat-container .chat-header {
  border-radius: 0.75rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border-color);
}

.language-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.language-selector-wrapper label {
  font-weight: 500;
  color: var(--text-secondary);
}

.header-controls {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.ai-provider-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ai-provider-wrapper label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.gemini-model-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.gemini-model-wrapper label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.gemini-model-wrapper select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
}

.ai-provider-label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: 0.5rem 0;
}

.ai-provider-wrapper select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  background: var(--bg-primary);
  cursor: pointer;
  color: var(--text-primary);
}

.btn-api-settings {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-primary);
  transition: background-color 0.2s;
}

.btn-api-settings:hover {
  background: var(--border-color);
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: var(--bg-card);
  margin: 5% auto;
  padding: 2rem;
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  position: relative;
}

.modal-close {
  color: var(--text-secondary);
  float: right;
  font-size: 2rem;
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-content h2 {
  margin-top: 0;
  color: var(--color-primary);
}

.api-settings-form {
  margin-top: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.form-group small {
  display: block;
  margin-top: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.form-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  margin-top: 2rem;
}

/* Close modal when clicking outside */
.modal-content {
  animation: modalFadeIn 0.3s;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.design-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.design-selector-wrapper label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.design-selector-wrapper select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  background: var(--bg-primary);
  cursor: pointer;
}

.language-selector-wrapper select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  background: var(--bg-primary);
  cursor: pointer;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  background: var(--bg-primary);
  min-height: 0;
  align-items: flex-start;
}

.chat-messages::-webkit-scrollbar {
  width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
  background: var(--bg-primary);
  border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--border-color);
  opacity: 0.8;
}

.message {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  border-radius: 0.75rem;
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.user-message {
  background: var(--color-dark);
  color: var(--color-white);
  border: 1px solid var(--border-color);
  max-width: 800px;
  width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
  margin-left: auto;
}

.assistant-message {
  background: var(--color-dark);
  border: 1px solid var(--border-color);
  max-width: 800px;
  width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
  color: var(--color-white);
  margin-right: auto;
}

/* Message Content */
.message-content {
  flex: 1;
  word-wrap: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
  color: var(--code-message-text);
}

.message-content p {
  margin: 0.25rem 0;
  line-height: 1.5;
  color: var(--code-message-text);
}

.message-content ul,
.message-content ol {
  margin: 0.5rem 0;
  padding-left: 1.5rem;
  color: var(--code-message-text);
}

.message-content li {
  margin: 0.25rem 0;
  color: var(--code-message-text);
}

.message-content pre {
  background: var(--color-white);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 0.125rem 0;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-black);
}

.message-content code {
  background: var(--color-white);
  padding: 0.2rem 0.4rem;
  border-radius: 0.25rem;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: var(--color-black);
}

.message-content pre code {
  background: none;
  padding: 0;
}

.message-content h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 1rem 0 0.5rem 0;
  color: var(--code-message-text);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.25rem;
}

.message-content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 1rem 0 0.5rem 0;
  color: var(--code-message-text);
}

.message-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0.75rem 0 0.375rem 0;
  color: var(--code-message-text);
}

.message-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0.5rem 0 0.25rem 0;
  color: var(--code-message-text);
}

.message-content hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 0.75rem 0;
}

.message-content li {
  margin: 0.125rem 0;
  margin-left: 1.5rem;
  color: var(--code-message-text);
}

.message-content .error {
  color: var(--color-error);
  background: var(--color-error-bg);
  padding: 0.5rem;
  border-radius: 0.25rem;
  margin: 0.5rem 0;
}

.message-content .success {
  color: var(--color-success);
  background: var(--color-success-bg);
  padding: 0.5rem;
  border-radius: 0.25rem;
  margin: 0.5rem 0;
}

.message-content .warning {
  color: var(--color-warning);
  background: var(--color-warning-bg);
  padding: 0.5rem;
  border-radius: 0.25rem;
  margin: 0.5rem 0;
}

/* Fixed Input Area at Bottom */
.chat-input-area-fixed {
  position: fixed;
  bottom: 0;
  left: 60px;
  right: 0;
  padding: 0.25rem 1rem;
  background: transparent;
  border-top: none;
  z-index: 100;
  box-shadow: none;
  display: flex;
  justify-content: center;
  transition: left 0.3s ease;
}

.code-assistant-fullpage.sidebar-open .chat-input-area-fixed {
  left: 360px;
}

.input-container-compact {
  width: 100%;
  max-width: 800px;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  background: transparent;
}

/* chat-main-area padding handled in main definition above */

/* Sidebar adjustments handled by transform */

.input-actions-compact {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  background: transparent;
  border: none;
  padding: 0.25rem 0;
  width: 100%;
  max-width: 800px;
}

.oval-btn {
  flex: 1;
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: 9999px;
  color: var(--color-white);
  cursor: pointer;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s;
  font-weight: 500;
  min-width: 0;
  position: relative;
}

.oval-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.file-upload-oval-btn {
  position: relative;
}

.file-upload-oval-btn input[type="file"] {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  top: 0;
  left: 0;
}

.oval-select {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  appearance: none;
  border: none;
  background: transparent;
  z-index: 10;
}

.oval-btn span {
  pointer-events: none;
  z-index: 1;
  color: var(--color-white);
}

.file-upload-chat-btn-compact input[type="file"] {
  display: none;
}

.icon-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.file-upload-chat-btn-compact:hover .icon-text,
.btn-clear-compact:hover .icon-text {
  color: var(--text-primary);
}

.btn-clear-compact {
  padding: 0.375rem 0.375rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: background-color 0.2s;
}

.btn-clear-compact:hover {
  background: var(--border-color);
}

.input-wrapper {
  display: flex;
  gap: 0.375rem;
  align-items: stretch;
  background: transparent;
}

.chat-input-compact {
  flex: 1;
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  font-family: system-ui, sans-serif;
  font-size: 0.75rem;
  resize: none;
  min-height: 32px;
  max-height: 100px;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.4;
  box-sizing: border-box;
  text-align: left;
  overflow-y: auto;
}

.chat-input-compact::placeholder {
  color: var(--text-secondary);
}

.chat-input-compact:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--color-primary-ring-md);
  background: var(--bg-primary);
  color: var(--text-primary);
}

.btn-send-compact {
  padding: 0.25rem 0.75rem;
  background: var(--color-primary);
  color: var(--color-white);
  border: 1px solid var(--color-primary);
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  height: 100%;
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
}

.btn-send-compact:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.btn-send-compact:disabled {
  background: var(--text-secondary);
  cursor: not-allowed;
}

.btn-visualize-compact {
  padding: 0.375rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: background-color 0.2s;
}

.btn-visualize-compact:hover {
  background: var(--border-color);
}

/* Visualize Modal */
.visualize-modal-content {
  max-width: 90vw;
  width: 1000px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.visualize-controls {
  display: flex;
  gap: 0.5rem;
  margin: 1rem 0;
}

.btn-run-code {
  padding: 0.5rem 1rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 0.2s;
}

.btn-run-code:hover {
  background: var(--primary-dark);
}

.btn-clear-viz {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  transition: background-color 0.2s;
}

.btn-clear-viz:hover {
  background: var(--border-color);
}

.visualize-output {
  flex: 1;
  min-height: 400px;
  max-height: 70vh;
  overflow-y: auto;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
}

.visualize-output canvas {
  max-width: 100%;
  margin: 1rem 0;
}

.visualize-output img {
  max-width: 100%;
  margin: 1rem 0;
}

.visualize-output pre {
  background: var(--bg-secondary);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 0.5rem 0;
}

.visualize-output .error {
  color: var(--color-error);
  background: var(--color-error-bg);
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin: 0.5rem 0;
}

.visualize-output .success {
  color: var(--color-success);
  background: var(--color-success-bg);
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin: 0.5rem 0;
}

/* Legacy styles for compatibility */
.chat-input-area {
  padding: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex-shrink: 0;
}

.input-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.file-upload-chat-btn {
  padding: 0.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  transition: background-color 0.2s;
}

.file-upload-chat-btn:hover {
  background: var(--border-color);
}

.file-upload-chat-btn input[type="file"] {
  display: none;
}

.btn-clear {
  padding: 0.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 1.25rem;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
}

.btn-clear:hover {
  background: var(--border-color);
}

.chat-input {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  font-family: system-ui, sans-serif;
  font-size: 1rem;
  resize: none;
  min-height: 60px;
  max-height: 200px;
}

.chat-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.btn-send {
  align-self: flex-end;
  padding: 0.75rem 2rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0.75rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-send:hover {
  background: var(--primary-dark);
}

.btn-send:disabled {
  background: var(--text-secondary);
  cursor: not-allowed;
}

.visualization-container {
  margin: 1rem 0;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: 0.5rem;
}

.visualization-container canvas {
  max-height: 400px;
}


.code-block-container {
  margin: 0.25rem 0;
  position: relative;
  border-left: none;
}

.code-block {
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.5;
  white-space: pre;
  margin: 0;
  border-left: none;
}

.code-block-footer {
  padding: 0.375rem 0.75rem;
  background: var(--bg-secondary);
  border-bottom-left-radius: 0.5rem;
  border-bottom-right-radius: 0.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0;
  border-left: none;
}

.code-block-footer small {
  color: var(--text-secondary);
  font-size: 0.7rem;
  flex: 1;
}

/* Ensure no blue borders on code elements inside messages */
.message-content .code-block-container,
.message-content .code-block,
.message-content .code-block-footer,
.message-content pre {
  border-left: none !important;
}

.btn-copy-code-footer {
  padding: 0.25rem 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.75rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-copy-code-footer:hover {
  background: var(--border-color);
  border-color: var(--primary-color);
}

.code-block code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
  white-space: pre;
  display: block;
}

.loading-indicator {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.5rem;
}

.loading-dot {
  width: 8px;
  height: 8px;
  background: var(--text-secondary);
  border-radius: 50%;
  animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dot:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dot:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes bounce {

  0%,
  80%,
  100% {
    transform: scale(0);
  }

  40% {
    transform: scale(1);
  }
}

.input-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.input-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.input-panel h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.input-panel textarea {
  width: 100%;
  min-height: 200px;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  resize: vertical;
  background: var(--color-white);
  color: var(--text-primary);
}

.input-panel textarea::placeholder {
  color: var(--text-secondary);
}

.code-editor {
  min-height: 300px;
  font-family: 'Courier New', monospace;
  line-height: 1.6;
}

.code-editor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.code-editor-header h2 {
  margin: 0;
}

.editor-controls {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.editor-controls select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  background: var(--bg-primary);
}

.file-upload-btn-small {
  padding: 0.5rem 1rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  display: inline-block;
  transition: background-color 0.2s;
  font-size: 0.875rem;
}

.file-upload-btn-small:hover {
  background-color: var(--border-color);
}

.file-upload-btn-small input[type="file"] {
  display: none;
}

.action-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
}

.action-buttons .btn {
  white-space: nowrap;
  font-size: 0.875rem;
  padding: 0.75rem 1rem;
}

.code-description {
  width: 100%;
  min-height: 120px;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-family: system-ui, sans-serif;
  font-size: 0.875rem;
  resize: vertical;
  margin-bottom: 1rem;
}

.btn-generate {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  font-weight: 600;
}

.data-input-options {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.file-upload-btn {
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-color);
  color: white;
  border-radius: 0.5rem;
  cursor: pointer;
  display: inline-block;
  transition: background-color 0.2s;
}

.file-upload-btn:hover {
  background-color: var(--primary-dark);
}

.file-upload-btn input[type="file"] {
  display: none;
}

.or-text {
  color: var(--text-secondary);
}

.data-preview {
  margin-top: 1rem;
  padding: 1rem;
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.output-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.output-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.tab-content h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

/* Tab buttons styled as primary buttons */
.tab-button {
  flex: 1;
  padding: 0.75rem 1rem;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 0.5rem 0.5rem 0 0;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
  position: relative;
}

.tab-button:hover {
  color: var(--color-primary);
  background: var(--color-primary-shadow-sm);
}

.tab-button.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: -2px;
}

.insights-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.insight-card {
  background: var(--bg-secondary);
  padding: 1rem;
  border-radius: 0.5rem;
  border-left: 4px solid var(--primary-color);
}

.insight-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.insight-card p {
  color: var(--text-secondary);
  margin: 0;
}

.chart-controls {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.chart-controls label {
  font-weight: 500;
}

.chart-controls select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 1rem;
  background: var(--bg-card);
  color: var(--text-primary);
}

.chart-container {
  position: relative;
  height: 400px;
  margin-top: 1rem;
}

.chart-container canvas {
  max-height: 400px;
}

.results-container {
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  background: var(--color-white);
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 0.5rem;
  max-height: 500px;
  overflow-y: auto;
  color: var(--text-primary);
}

.placeholder-text {
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
  padding: 2rem;
}

.assistance-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 600px;
  overflow-y: auto;
}

.assistance-card {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 0.5rem;
  border-left: 4px solid var(--primary-color);
}

.assistance-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.assistance-card .code-block {
  background: var(--bg-primary);
  padding: 1rem;
  border-radius: 0.5rem;
  margin-top: 0.75rem;
  border: 1px solid var(--border-color);
  overflow-x: auto;
}

.assistance-card pre {
  margin: 0;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
}

.assistance-card code {
  font-family: 'Courier New', monospace;
}

.assistance-card ul,
.assistance-card ol {
  margin: 0.5rem 0;
  padding-left: 1.5rem;
}

.assistance-card li {
  margin: 0.25rem 0;
  color: var(--text-secondary);
}

.suggestion-item {
  padding: 0.75rem;
  background: var(--bg-primary);
  border-radius: 0.25rem;
  margin: 0.5rem 0;
  border-left: 3px solid var(--secondary-color);
}

.suggestion-item strong {
  color: var(--text-primary);
}

.warning-item {
  border-left-color: var(--color-warning-border);
  background: var(--color-warning-bg);
}

.error-item {
  border-left-color: var(--color-error);
  background: var(--color-error-bg);
}

.success-item {
  border-left-color: var(--secondary-color);
  background: var(--color-success-bg);
}

/* Home Page */
/* Home Page */
.home-layout {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 1rem;
  width: 100%;
}

.home-content-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}

.home-content-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.hero-section {
  text-align: left;
  padding: 0;
  background: transparent;
  color: var(--text-primary);
  border-radius: 0;
  margin-bottom: 0;
  border: none;
}

/* When the animated background is active, give the hero text a white card */
body.hero-bg-active .hero-section {
  background: rgba(34, 44, 62, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: var(--radius-xl);
  padding: 1.5rem 2rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.35);
}

body.hero-bg-active .hero-section h1 {
  color: var(--color-white);
}

body.hero-bg-active .hero-section h1 .logo-analyt {
  color: var(--color-primary);
}

body.hero-bg-active .hero-section p {
  color: rgba(255, 255, 255, 0.75);
}

.hero-section h1 {
  color: var(--text-primary);
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  text-align: left;
  line-height: 1.2;
}

.hero-section p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 100%;
  margin: 0;
  text-align: left;
}

/* Code Animation Container */
.code-animation-container {
  background: var(--color-dark);
  flex: 1;
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  min-height: 0;
  box-sizing: border-box;
}

.code-animation-header {
  background: var(--text-secondary);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.code-animation-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-color);
}

.code-animation-dot:nth-child(1) {
  background: var(--color-dot-red);
}

.code-animation-dot:nth-child(2) {
  background: var(--color-dot-yellow);
}

.code-animation-dot:nth-child(3) {
  background: #10b981;
}

.code-animation-filename {
  margin-left: auto;
  font-size: 0.875rem;
  color: var(--color-white);
  font-family: 'Courier New', monospace;
}

.code-animation-content {
  padding: 1.5rem;
  background: var(--color-dark);
  flex: 1;
  overflow: hidden;
  border-radius: 0 0 0.75rem 0.75rem;
  min-height: 200px;
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.code-animation-content pre {
  margin: 0;
  padding: 0;
  background: transparent;
  color: var(--color-white);
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.code-animation-content .code-line {
  color: var(--color-white);
  display: block;
  background: transparent;
  margin: 0;
  padding: 0;
}

.code-animation-content .code-line * {
  background: transparent !important;
}

.code-animation-content .cursor {
  animation: blink 1s infinite;
  color: var(--color-primary);
  margin-left: 2px;
}

/* Syntax highlighting colors - theme-aware */
.code-animation-content .keyword {
  color: #c792ea;
  /* Purple for keywords */
  background: transparent;
}

.code-animation-content .string {
  color: #c3e88d;
  /* Green for strings */
  background: transparent;
}

.code-animation-content .comment {
  color: #546e7a;
  /* Gray for comments */
  background: transparent;
}

.code-animation-content .function {
  color: #82aaff;
  /* Blue for functions */
  background: transparent;
}

.code-animation-content .number {
  color: #f78c6c;
  /* Orange for numbers */
  background: transparent;
}

.code-animation-content .operator {
  color: #89ddff;
  /* Cyan for operators */
  background: transparent;
}

.code-animation-content .bracket {
  color: #ffcb6b;
  /* Yellow for brackets */
  background: transparent;
}

.code-animation-content .variable {
  color: var(--color-white);
  background: transparent;
}

.code-animation-content span {
  background: transparent;
}

@keyframes blink {

  0%,
  50% {
    opacity: 1;
  }

  51%,
  100% {
    opacity: 0;
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .home-layout {
    flex-direction: column;
    gap: 2rem;
  }

  .home-content-right {
    width: 100%;
  }

  .hero-section {
    text-align: center;
  }

  .hero-section h1,
  .hero-section p {
    text-align: center;
  }
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-dark);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-card h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-secondary);
}

.quick-links {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.quick-link-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  text-align: center;
  text-decoration: none;
  color: var(--text-primary);
  transition: transform 0.2s, box-shadow 0.2s;
}

.quick-link-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-dark);
  color: var(--color-primary);
}

.quick-link-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

/* Page Navigation Grid */
.page-navigation-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.page-nav-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: row;
  align-items: center;
  text-align: left;
  box-shadow: var(--shadow);
  gap: 1rem;
}

.page-nav-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.page-nav-icon {
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.page-nav-card h2 {
  font-size: 1.1rem;
  margin: 0 0.75rem 0 0;
  color: var(--color-primary);
  font-weight: 600;
  flex-shrink: 0;
  white-space: nowrap;
}

.page-nav-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.4;
  margin: 0;
  flex: 1;
  text-align: left;
}

/* Responsive Design */
@media (max-width: 768px) {
  .page-navigation-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  @media (max-width: 600px) {
    .page-navigation-grid {
      grid-template-columns: 1fr;
    }
  }

  .page-nav-card {
    padding: 1.5rem;
  }

  .page-nav-icon {
    font-size: 3rem;
  }

  .hero-section h1 {
    font-size: 2rem;
  }

  .hero-section p {
    font-size: 1rem;
  }

  .chat-container {
    height: calc(100vh - 100px);
    padding: 1rem;
  }

  .chat-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
  }

  .user-message,
  .assistant-message {
    max-width: 100%;
  }

  .chat-input-area {
    padding: 1rem;
  }

  .input-actions {
    margin-bottom: 0.5rem;
  }

  .chat-messages {
    padding: 1rem;
  }

  .conversation-starters {
    padding: 1rem;
  }

  .starter-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  @media (max-width: 480px) {
    .starter-grid {
      grid-template-columns: 1fr;
    }
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .code-assistant-layout {
    grid-template-columns: 1fr;
  }

  .dashboard-grid,
  .modules-grid,
  .practice-grid,
  .resources-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 2rem;
  }

  .hero-section h1 {
    font-size: 2rem;
  }
}

/* ============================================
   DESIGN VARIATIONS
   ============================================ */

/* DESIGN 1: Modern Glassmorphism */
.chat-container.design1 {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary) 100%);
  padding: 2rem;
  border-radius: 1.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.chat-container.design1 .chat-messages {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.chat-container.design1 .chat-header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 1.5rem;
  border-radius: 1rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.chat-container.design1 .chat-header h1 {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.chat-container.design1 .user-message {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary) 100%);
  box-shadow: 0 4px 15px var(--color-primary-shadow-lg);
  border: none;
  color: var(--color-white);
}

.chat-container.design1 .assistant-message {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.chat-container.design1 .chat-input-area {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  margin-top: 1rem;
}

.chat-container.design1 .chat-input {
  background: rgba(255, 255, 255, 0.8);
  border: 2px solid var(--color-primary-ring-md);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.chat-container.design1 .chat-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-ring);
  background: white;
}

.chat-container.design1 .btn-send {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary) 100%);
  box-shadow: 0 4px 15px var(--color-primary-shadow-lg);
  border: none;
  color: var(--color-white);
}

.chat-container.design1 .btn-send:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 105, 244, 0.5);
}

.chat-container.design1 .file-upload-chat-btn,
.chat-container.design1 .btn-clear {
  background: var(--color-primary-ring);
  border: 1px solid var(--color-primary-shadow);
  color: var(--color-primary);
}

.chat-container.design1 .file-upload-chat-btn:hover,
.chat-container.design1 .btn-clear:hover {
  background: var(--color-primary-ring-md);
}

/* DESIGN 2: Clean Minimal with Accents */
.chat-container.design2 {
  background: #f8fafc;
  padding: 2rem;
  border-radius: 1rem;
}

.chat-container.design2 .chat-messages {
  background: white;
  border-radius: 0.75rem;
  padding: 2rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
}

.chat-container.design2 .chat-header {
  background: white;
  padding: 1.5rem 2rem;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
}

.chat-container.design2 .chat-header h1 {
  color: #1e293b;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.chat-container.design2 .user-message {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 2px 8px var(--color-primary-ring-md);
  border: none;
  padding: 1.25rem 1.5rem;
}

.chat-container.design2 .assistant-message {
  background: white;
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  padding: 1.25rem 1.5rem;
}

.chat-container.design2 .chat-input-area {
  background: white;
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
  margin-top: 1rem;
}

.chat-container.design2 .chat-input {
  background: #f8fafc;
  border: 2px solid var(--border-color);
  font-size: 0.9375rem;
}

.chat-container.design2 .chat-input:focus {
  border-color: var(--color-primary);
  background: white;
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.chat-container.design2 .btn-send {
  background: var(--color-primary);
  box-shadow: 0 2px 8px var(--color-primary-shadow);
  font-weight: 500;
  color: var(--color-white);
}

.chat-container.design2 .btn-send:hover {
  background: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--color-primary-shadow-lg);
}

.chat-container.design2 .file-upload-chat-btn,
.chat-container.design2 .btn-clear {
  background: #f1f5f9;
  border: 1px solid var(--border-color);
  color: var(--color-dark);
}

.chat-container.design2 .file-upload-chat-btn:hover,
.chat-container.design2 .btn-clear:hover {
  background: var(--border-color);
  color: #1e293b;
}

.chat-container.design2 .message-content h3,
.chat-container.design2 .message-content h4 {
  color: var(--primary-color);
}

/* DESIGN 3: Dark Professional */
.chat-container.design3 {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.chat-container.design3 .chat-messages {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.chat-container.design3 .chat-header {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.chat-container.design3 .chat-header h1 {
  color: var(--primary-color);
  font-weight: 600;
}

.chat-container.design3 .user-message {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  box-shadow: 0 4px 20px var(--color-primary-shadow);
  border: none;
}

.chat-container.design3 .assistant-message {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.chat-container.design3 .assistant-message .message-content {
  color: var(--text-primary);
}

.chat-container.design3 .chat-input-area {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.chat-container.design3 .chat-input {
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  color: var(--text-primary);
}

.chat-container.design3 .chat-input:focus {
  border-color: var(--primary-color);
  background: var(--bg-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring-md);
}

.chat-container.design3 .chat-input::placeholder {
  color: var(--text-secondary);
}

.chat-container.design3 .btn-send {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  box-shadow: 0 4px 15px var(--color-primary-shadow);
  color: var(--color-white);
}

.chat-container.design3 .btn-send:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-primary-shadow-lg);
}

.chat-container.design3 .file-upload-chat-btn,
.chat-container.design3 .btn-clear {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.chat-container.design3 .file-upload-chat-btn:hover,
.chat-container.design3 .btn-clear:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.chat-container.design3 .message-content h3,
.chat-container.design3 .message-content h4 {
  color: var(--primary-color);
}

.chat-container.design3 .message-content pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.chat-container.design3 .code-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.chat-container.design3 .code-block-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--color-dark);
  color: #94a3b8;
}

/* Welcome Section - Connected */
.welcome-section {
  background: var(--color-dark);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  padding: 2rem;
  margin-bottom: 1rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.welcome-message {
  margin-bottom: 1.5rem;
}

.welcome-message p {
  color: var(--color-white);
  font-size: 1.1rem;
  margin: 0;
  text-align: center;
}

.conversation-starters {
  margin-top: 1.5rem;
}

.conversation-starters h3 {
  color: var(--color-primary);
  font-size: 1rem;
  margin-bottom: 1rem;
  font-weight: 600;
  text-align: center;
}

.starter-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  width: 100%;
}

.starter-btn {
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
  font-family: system-ui, sans-serif;
}

.starter-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Profile Management Page */
.profile-container {
  width: 100%;
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 2rem;
  box-sizing: border-box;
}

.profile-container h1 {
  color: var(--text-primary);
  margin-bottom: 2rem;
  font-size: 2rem;
}

.profile-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.profile-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 2rem;
}

.profile-section h2 {
  color: var(--text-primary);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.75rem;
}

/* Profile Picture Section */
.profile-picture-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.profile-picture-container {
  position: relative;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s;
}

.profile-picture-container:hover {
  border-color: var(--primary-color);
  transform: scale(1.05);
}

.profile-picture {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-picture-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
}

.profile-picture-container:hover .profile-picture-overlay {
  opacity: 1;
}

.profile-picture-upload-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: white;
  cursor: pointer;
  font-size: 0.875rem;
}

.profile-picture-upload-btn span:first-child {
  font-size: 1.5rem;
}

.profile-picture-hint {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-align: center;
}

/* Profile Forms */
.profile-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
}

.form-input,
.form-textarea {
  padding: 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--color-primary-ring);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-hint {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.btn-primary {
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s;
  align-self: flex-start;
}

.btn-primary:hover {
  background: var(--color-primary);
}

.btn-secondary {
  padding: 0.75rem 1.5rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  align-self: flex-start;
}

.btn-secondary:hover {
  background: var(--color-dark);
  border-color: var(--color-dark);
  color: var(--color-white);
}

/* Settings List */
.settings-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
}

.setting-info h3 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.setting-info p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: 0.3s;
  border-radius: 26px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
}

.toggle-switch input:checked+.toggle-slider {
  background-color: var(--color-primary);
}

.toggle-switch input:checked+.toggle-slider:before {
  transform: translateX(24px);
}

/* Danger Zone */
.profile-section.danger-zone {
  border-color: var(--color-error);
}

.danger-zone-warning {
  color: var(--color-error-border);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.danger-actions {
  display: flex;
  gap: 1rem;
}

.btn-danger {
  padding: 0.75rem 1.5rem;
  background: var(--color-error);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-danger:hover {
  background: #dc2626;
}

/* Notifications */
.notification {
  position: fixed;
  top: 80px;
  right: 2rem;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease;
  max-width: 400px;
}

.notification.show {
  opacity: 1;
  transform: translateX(0);
}

.notification-success {
  border-left: 4px solid var(--secondary-color);
  color: var(--text-primary);
}

.notification-error {
  border-left: 4px solid var(--color-error);
  color: var(--text-primary);
}

/* Email Notification */
.email-notification {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: var(--bg-card);
  border: 2px solid var(--primary-color);
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
  z-index: 10001;
  opacity: 0;
  transition: all 0.3s ease;
  max-width: 500px;
  width: 90%;
  padding: 2rem;
}

.email-notification.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.email-notification-content {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
}

.email-notification-icon {
  font-size: 3rem;
  flex-shrink: 0;
}

.email-notification-text {
  flex: 1;
}

.email-notification-text strong {
  color: var(--text-primary);
  font-size: 1.25rem;
  display: block;
  margin-bottom: 0.5rem;
}

.email-notification-text p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0;
  line-height: 1.5;
}

.email-notification-text p strong {
  color: var(--primary-color);
  font-size: 0.875rem;
  display: inline;
  margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .profile-container {
    padding: 0 1rem;
    margin: 1rem auto;
  }

  .profile-section {
    padding: 1.5rem;
  }

  .profile-picture-container {
    width: 120px;
    height: 120px;
  }

  .setting-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .notification {
    right: 1rem;
    left: 1rem;
    max-width: none;
  }
}

.starter-btn:active {
  transform: translateY(0);
}

/* White theme specific for starters */
.chat-container.design3 .starter-btn {
  background: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.chat-container.design3 .starter-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.chat-container.design3 .btn-copy-code {
  background: var(--code-button-bg);
  color: var(--code-button-text);
}

.chat-container.design3 .btn-copy-code:hover {
  background: var(--primary-dark);
}

/* Code blocks use theme variables */
pre,
code {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Select elements */
select {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

/* Input fields */
input[type="text"],
input[type="search"],
textarea {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

/* Leaderboard Styles */
.leaderboard-item {
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  transition: all 0.2s;
}

.leaderboard-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}

.leaderboard-item-current {
  border: 2px solid var(--color-primary) !important;
  background: var(--color-primary-shadow-sm) !important;
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.leaderboard-item-current .leaderboard-name {
  color: var(--color-primary) !important;
  font-weight: 700 !important;
}


input[type="text"]::placeholder,
input[type="search"]::placeholder,
textarea::placeholder {
  color: var(--text-secondary) !important;
}

/* Cards and containers */

/* ============================================================================
   Footer Styles (Home Page Only) – Structured / SaaS Style
   ============================================================================ */

html {
  height: 100%;
}

body.home-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.home-page .container {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding-top: 1rem;
  justify-content: center;
  max-width: 1200px;
}

.home-footer {
  background-color: #111827;
  color: white;
  width: 100%;
  padding: 1rem 0 0.75rem 0;
  margin-top: auto;
  position: relative;
  flex-shrink: 0;
}

.home-footer .container.home-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 4rem;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-sizing: border-box;
  position: relative;
}

/* TOP ROW – LOGO WITH BUTTONS ON EACH SIDE */
.home-footer-top-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.home-footer-left-links,
.home-footer-right-links {
  display: flex;
  flex-direction: row;
  gap: 1.5rem;
  align-items: center;
}

.home-footer-left-links a,
.home-footer-right-links a {
  color: white;
  text-decoration: none;
  font-size: 0.8rem;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.home-footer-left-links a:hover,
.home-footer-right-links a:hover {
  color: rgba(255, 255, 255, 0.8);
}

.home-footer-left-links a[style*="display: none"],
.home-footer-right-links a[style*="display: none"] {
  display: none !important;
}

/* CENTER – LOGO */
.home-footer-brand-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.home-footer-brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
  margin: 0;
}

.home-footer-brand .logo-analyt {
  color: white;
}

.home-footer-brand .logo-iq {
  color: var(--color-primary);
}

/* BOTTOM ROW – CONTINUOUS TEXT LINE */
.home-footer-bottom-row {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.home-footer-text-line {
  font-size: 0.65rem;
  color: white;
  text-align: center;
  line-height: 1.4;
}

/* Responsive */
@media (max-width: 768px) {
  .home-footer {
    padding: 0.75rem 0 0.5rem 0;
  }

  .home-footer .container.home-footer-inner {
    padding: 0 2rem;
    gap: 0.5rem;
  }

  .home-footer-top-row {
    gap: 1.5rem;
    flex-direction: column;
  }

  .home-footer-left-links,
  .home-footer-right-links {
    gap: 1.25rem;
  }

  .home-footer-text-line {
    font-size: 0.6rem;
    padding: 0 1rem;
  }
}

/* ============================================================================
   Contact Page Styles
   ============================================================================ */

.contact-container {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}

.contact-form-full {
  max-width: 600px;
  width: 100%;
}

.contact-form-section h2,
.contact-info-section h2 {
  color: var(--text-primary);
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-form label {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.contact-form textarea {
  resize: vertical;
  min-height: 150px;
}


.message-status {
  padding: 1rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
  font-weight: 500;
}

.message-status.success {
  background-color: var(--color-success-bg);
  color: var(--color-success-text);
  border: 1px solid var(--color-success-border);
}

.message-status.error {
  background-color: var(--color-error-bg);
  color: var(--color-error-text);
  border: 1px solid var(--color-error-border);
}

.message-status.info {
  background-color: var(--color-info-bg);
  color: var(--color-info-text);
  border: 1px solid var(--color-info-border);
}

/* Responsive */
@media (max-width: 768px) {
  .contact-form-full {
    max-width: 100%;
  }
}

/* ═══════════════════════════════════════════════════════════════
   LOCAL DEV ONLY — Hero Animated Coding Background
   Remove this entire section before any production deploy.
   Scoped to body.hero-bg-active to avoid leaking into other pages.
   ═══════════════════════════════════════════════════════════════ */

/* ── Scene: fixed full-viewport layer behind everything ── */
.hero-bg-scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: var(--color-dark);
  pointer-events: none;
}

/* Static fallback when reduced-motion is preferred */
.hero-bg-scene.hero-bg-reduced {
  background: var(--color-dark);
}

/* ── Dark overlay for content readability ── */
.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom,
      rgba(34, 44, 62, 0.55) 0%,
      rgba(34, 44, 62, 0.35) 40%,
      rgba(34, 44, 62, 0.35) 60%,
      rgba(34, 44, 62, 0.65) 100%);
  z-index: 4;
}

/* ── Page content sits above the scene ── */
body.hero-bg-active main,
body.hero-bg-active footer {
  position: relative;
  z-index: 200;
}

body.hero-bg-active .navbar {
  position: relative;
  z-index: 9000;
}

/* Lighten the main container background so the scene shows through */
body.hero-bg-active .container {
  background: transparent;
}

body.hero-bg-active {
  background: transparent;
}

/* Make nav dark/frosted with white text on hero page */
body.hero-bg-active .navbar {
  background: rgba(17, 24, 39, 0.82) !important;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* White logo + links on hero page */
body.hero-bg-active .logo-analyt {
  color: #ffffff !important;
}

body.hero-bg-active .nav-links a {
  color: rgba(255, 255, 255, 0.8) !important;
}

body.hero-bg-active .nav-links a:hover,
body.hero-bg-active .nav-links a.active {
  color: #ffffff !important;
}

body.hero-bg-active .user-menu-toggle {
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.25) !important;
}

/* Ensure dropdown floats above scene layers.
   position:fixed escapes the navbar's backdrop-filter stacking context. */
body.hero-bg-active .user-menu-dropdown {
  position: fixed !important;
  top: 4rem !important;
  right: 1.5rem !important;
  z-index: 99999 !important;
  background: rgba(17, 24, 39, 0.97) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border-color: rgba(255, 255, 255, 0.12) !important;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.7) !important;
}

body.hero-bg-active .user-menu-item {
  color: rgba(255, 255, 255, 0.85) !important;
}

body.hero-bg-active .user-menu-item:hover {
  background: rgba(37, 105, 244, 0.15) !important;
  color: #ffffff !important;
}

body.hero-bg-active .user-menu-header .user-name {
  color: rgba(255, 255, 255, 0.6) !important;
}

body.hero-bg-active .user-menu-divider {
  background: rgba(255, 255, 255, 0.08) !important;
}

/* ── FAR LAYER: drifting character columns ── */
.hero-bg-layer-far {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.hero-bg-col {
  position: absolute;
  top: -120%;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.8;
  color: var(--color-primary);
  white-space: pre;
  animation: heroBgDriftDown linear infinite;
  will-change: transform;
}

@keyframes heroBgDriftDown {
  from {
    transform: translateY(0);
  }

  to {
    transform: translateY(220vh);
  }
}

/* ── MID LAYER: ghost code blocks ── */
.hero-bg-layer-mid {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
}

.hero-bg-ghost {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.7;
  color: var(--color-white);
  white-space: pre;
  animation: heroBgScrollUp linear infinite;
  will-change: transform;
}

@keyframes heroBgScrollUp {
  from {
    transform: translateY(30vh);
    opacity: 0;
  }

  10% {
    opacity: 1;
  }

  85% {
    opacity: 1;
  }

  to {
    transform: translateY(-60vh);
    opacity: 0;
  }
}

/* ── FOREGROUND LAYER: floating IDE windows ── */
.hero-bg-layer-fg {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.hero-bg-window {
  position: absolute;
  width: clamp(260px, 28vw, 380px);
  background: rgba(34, 44, 62, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.18);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  overflow: hidden;
  animation: heroBgFloat ease-in-out infinite;
  will-change: transform;
}

/* Window positions */
.hero-bg-float-a {
  top: 12%;
  left: 3%;
  animation-duration: 14s;
  animation-delay: 0s;
}

.hero-bg-float-b {
  top: 30%;
  right: 2%;
  animation-duration: 17s;
  animation-delay: -5s;
}

.hero-bg-float-c {
  bottom: 10%;
  left: 8%;
  animation-duration: 20s;
  animation-delay: -9s;
}

@keyframes heroBgFloat {
  0% {
    transform: translateY(0px) rotate(0deg);
  }

  25% {
    transform: translateY(-10px) rotate(0.3deg);
  }

  50% {
    transform: translateY(-18px) rotate(-0.2deg);
  }

  75% {
    transform: translateY(-8px) rotate(0.15deg);
  }

  100% {
    transform: translateY(0px) rotate(0deg);
  }
}

/* Title bar */
.hero-bg-window-titlebar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 0.75rem;
  background: rgba(100, 116, 139, 0.35);
  border-bottom: 1px solid rgba(226, 232, 240, 0.12);
}

.hero-bg-window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.hero-bg-window-dot.dot-red {
  background: var(--color-dot-red);
}

.hero-bg-window-dot.dot-yellow {
  background: var(--color-dot-yellow);
}

.hero-bg-window-dot.dot-green {
  background: var(--color-dot-green);
}

.hero-bg-window-filename {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.02em;
}

/* Code body */
.hero-bg-window-body {
  margin: 0;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.65;
  color: var(--color-white);
  white-space: pre-wrap;
  word-break: break-all;
  background: transparent;
  min-height: 120px;
  max-height: 220px;
  overflow: hidden;
}

/* Blinking cursor */
.hero-bg-typed-cursor {
  display: inline-block;
  color: var(--color-primary);
  animation: heroBgBlink 1s step-end infinite;
  font-weight: 400;
}

@keyframes heroBgBlink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

/* ── Syntax highlight classes used by the typing engine ── */
.hero-kw-comment {
  color: #546e7a;
  /* steel blue-grey */
}

.hero-kw-keyword {
  color: #c792ea;
  /* purple */
}

.hero-kw-string {
  color: #c3e88d;
  /* green */
}

.hero-kw-number {
  color: #f78c6c;
  /* orange */
}

.hero-kw-function {
  color: #82aaff;
  /* light blue */
}

/* ── prefers-reduced-motion: kill all animations ── */
@media (prefers-reduced-motion: reduce) {
  .hero-bg-scene * {
    animation: none !important;
    transition: none !important;
  }

  .hero-bg-layer-far,
  .hero-bg-layer-mid,
  .hero-bg-layer-fg {
    display: none;
  }

  .hero-bg-overlay {
    background: rgba(34, 44, 62, 0.6);
  }
}

/* ── Responsive: hide windows on small screens ── */
@media (max-width: 768px) {

  .hero-bg-float-b,
  .hero-bg-float-c {
    display: none;
  }

  .hero-bg-float-a {
    width: 220px;
    top: 8%;
    left: 2%;
    font-size: 0.6rem;
  }
}

/* ── Neon blue hover glows (LOCAL DEV ONLY) ── */

/* Nav cards */
body.hero-bg-active .page-nav-card {
  background: rgba(34, 44, 62, 0.82) !important;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  color: var(--color-white) !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3) !important;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

body.hero-bg-active .page-nav-card p {
  color: rgba(255, 255, 255, 0.7) !important;
}

body.hero-bg-active .page-nav-card h2 {
  color: var(--color-white) !important;
}

body.hero-bg-active .page-nav-card:hover {
  background: rgba(34, 44, 62, 0.96) !important;
  border-color: var(--color-primary) !important;
  box-shadow:
    0 0 0 1px var(--color-primary),
    0 0 14px 3px rgba(37, 105, 244, 0.55),
    0 0 36px 8px rgba(37, 105, 244, 0.25) !important;
  transform: translateY(-4px);
}

/* Hero text card */
body.hero-bg-active .hero-section {
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

body.hero-bg-active .hero-section:hover {
  border-color: var(--color-primary);
  box-shadow:
    0 0 0 1px var(--color-primary),
    0 0 18px 4px var(--color-primary-shadow),
    0 0 40px 10px var(--color-primary-ring-md);
}

/* Floating IDE windows */
body.hero-bg-active .hero-bg-window {
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
  pointer-events: auto;
}

body.hero-bg-active .hero-bg-window:hover {
  border-color: var(--color-primary);
  box-shadow:
    0 0 0 1px var(--color-primary),
    0 0 20px 4px var(--color-primary-shadow),
    0 8px 32px rgba(0, 0, 0, 0.5);
}

/* Navbar links */
body.hero-bg-active .nav-links a {
  transition: color 0.2s, text-shadow 0.2s;
}

body.hero-bg-active .nav-links a:hover,
body.hero-bg-active .nav-links a.active {
  color: var(--color-primary);
  text-shadow: 0 0 8px var(--color-primary-shadow);
}

/* ═══════════════════════════════════════════════════════════════
   END LOCAL DEV ONLY
   ═══════════════════════════════════════════════════════════════ */