/* =========================
   Enhanced eyeBlink Platform Styles
   Inspired by styles-enhanced.css and new design identity
   ========================= */

/* Enhanced Color Palette */
:root {
  --bg-color: #0a0e1a;
  --card-bg: #1a1f2e;
  --text-color: #e2e8f0;
  --text-muted: #94a3b8;
  --accent-color: #00d4ff;
  --accent-color-rgb: 0, 212, 255;
  --accent-hover: #00b8e6;
  --border-color: #2d3748;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  
  /* Enhanced Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  
  /* Spacing & Layout */
  --header-height: 85px;
  --sidebar-width: 280px;
  --container-max-width: 1200px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
  
  /* Consistent Spacing Scale */
  --spacing-xs: 0.25rem;    /* 4px */
  --spacing-sm: 0.5rem;     /* 8px */
  --spacing-md: 1rem;       /* 16px */
  --spacing-lg: 1.5rem;     /* 24px */
  --spacing-xl: 2rem;       /* 32px */
  --spacing-2xl: 3rem;      /* 48px */
  --spacing-3xl: 4rem;      /* 64px */
  
  /* Component Padding */
  --padding-card: 2rem;
  --padding-card-sm: 1.5rem;
  --padding-form: 1.5rem;
  --padding-button: 0.75rem 1.5rem;
  --padding-button-lg: 1rem 2rem;
  --padding-input: 0.875rem 1rem;
  
  /* Component Gaps */
  --gap-xs: 0.25rem;
  --gap-sm: 0.5rem;
  --gap-md: 1rem;
  --gap-lg: 1.5rem;
  --gap-xl: 2rem;
  
  /* Animations */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Legacy variables for backward compatibility */
  --bg-dark: var(--bg-color);
  --bg-card: var(--card-bg);
  --text-light: var(--text-color);
  --text-muted-color: var(--text-muted);
  --transition-speed: var(--transition-normal);
}

/* Light Theme Support - Improved with lower contrast */
html.light-theme,
body.light-theme {
  --bg-color: #f5f7fa;
  --card-bg: #fafbfc;
  --text-color: #1e293b;
  --text-muted: #64748b;
  --border-color: #cbd5e1;
  --accent-color: #0891b2;
  --accent-color-rgb: 8, 145, 178;
  --accent-hover: #0e7490;
  --success-color: #059669;
  --warning-color: #d97706;
  --error-color: #dc2626;
  --bg-dark: var(--bg-color);
  --bg-card: var(--card-bg);
  --text-light: var(--text-color);
  --text-muted-color: var(--text-muted);
  
  /* Softer shadows for light theme */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* Light Theme Component Overrides */
html.light-theme .card-dark,
body.light-theme .card-dark {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

html.light-theme .card-dark:hover,
body.light-theme .card-dark:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  border-color: rgba(8, 145, 178, 0.3);
}

html.light-theme .alert-success,
body.light-theme .alert-success {
  background: rgba(5, 150, 105, 0.08);
  border-left-color: #059669;
  color: #047857;
}

html.light-theme .alert-danger,
body.light-theme .alert-danger {
  background: rgba(220, 38, 38, 0.08);
  border-left-color: #dc2626;
  color: #b91c1c;
}

html.light-theme .alert-info,
body.light-theme .alert-info {
  background: rgba(8, 145, 178, 0.08);
  border-left-color: #0891b2;
  color: #0e7490;
}

html.light-theme .alert-warning,
body.light-theme .alert-warning {
  background: rgba(217, 119, 6, 0.08);
  border-left-color: #d97706;
  color: #b45309;
}

html.light-theme .btn-accent,
body.light-theme .btn-accent {
  background: #0891b2;
  color: #ffffff;
}

html.light-theme .btn-accent:hover,
body.light-theme .btn-accent:hover {
  background: #0e7490;
  color: #ffffff;
}

html.light-theme .feature-card,
body.light-theme .feature-card {
  background: #ffffff;
  border-color: #e2e8f0;
}

html.light-theme .feature-card:hover,
body.light-theme .feature-card:hover {
  background: rgba(8, 145, 178, 0.03);
  border-color: rgba(8, 145, 178, 0.3);
}

html.light-theme .feature-icon,
body.light-theme .feature-icon {
  background: rgba(8, 145, 178, 0.08);
}

html.light-theme .feature-icon i,
body.light-theme .feature-icon i {
  color: #0891b2;
}

html.light-theme .preference-icon,
body.light-theme .preference-icon {
  background: rgba(8, 145, 178, 0.08);
}

html.light-theme .preference-select,
body.light-theme .preference-select {
  background: #ffffff;
  border-color: #e2e8f0;
}

html.light-theme .preference-select:focus,
body.light-theme .preference-select:focus {
  background: #ffffff;
  border-color: #0891b2;
}

html.light-theme .preferences-modal-header,
body.light-theme .preferences-modal-header {
  background: rgba(8, 145, 178, 0.03);
}

html.light-theme .preferences-modal-content,
body.light-theme .preferences-modal-content {
  background: #ffffff;
  border-color: #e2e8f0;
}

html.light-theme .preferences-modal-footer,
body.light-theme .preferences-modal-footer {
  background: rgba(8, 145, 178, 0.02);
}

html.light-theme .btn-preferences-save,
body.light-theme .btn-preferences-save {
  background: #0891b2;
  color: #ffffff;
}

html.light-theme .btn-preferences-save:hover,
body.light-theme .btn-preferences-save:hover {
  background: #0e7490;
  color: #ffffff;
}

html.light-theme .offcanvas,
body.light-theme .offcanvas {
  background-color: #ffffff;
  border-color: #e2e8f0;
}

html.light-theme .offcanvas-header,
body.light-theme .offcanvas-header {
  border-bottom-color: #e2e8f0;
}

html.light-theme .offcanvas-title,
body.light-theme .offcanvas-title {
  color: #1e293b;
}

html.light-theme .offcanvas-title i,
body.light-theme .offcanvas-title i {
  color: #0891b2;
}

html.light-theme .sidebar-nav-link,
body.light-theme .sidebar-nav-link {
  color: #1e293b;
}

html.light-theme .sidebar-nav-link:hover,
body.light-theme .sidebar-nav-link:hover {
  color: #0891b2;
  background: rgba(8, 145, 178, 0.08);
  border-color: rgba(8, 145, 178, 0.15);
}

html.light-theme .sidebar-nav-link i,
body.light-theme .sidebar-nav-link i {
  color: #0891b2;
}

html.light-theme .sidebar-preferences-title,
body.light-theme .sidebar-preferences-title {
  color: #1e293b;
}

html.light-theme .sidebar-preferences-title i,
body.light-theme .sidebar-preferences-title i {
  color: #0891b2;
}

html.light-theme .sidebar-separator,
body.light-theme .sidebar-separator {
  border-color: #e2e8f0;
}

html.light-theme .sidebar-form-label,
body.light-theme .sidebar-form-label {
  color: #1e293b;
}

html.light-theme .sidebar-form-header,
body.light-theme .sidebar-form-header {
  color: #1e293b;
}

html.light-theme .sidebar-form-header i,
body.light-theme .sidebar-form-header i {
  color: #0891b2;
}

html.light-theme .sidebar-footer,
body.light-theme .sidebar-footer {
  border-top-color: #e2e8f0;
}

html.light-theme .sidebar-footer-text,
body.light-theme .sidebar-footer-text {
  color: #64748b;
}

html.light-theme .offcanvas-body .nav-link,
body.light-theme .offcanvas-body .nav-link {
  color: #64748b;
}

html.light-theme .offcanvas-body .nav-link:hover,
body.light-theme .offcanvas-body .nav-link:hover {
  color: #0891b2;
  background: rgba(8, 145, 178, 0.08);
}

html.light-theme .btn-close-white,
body.light-theme .btn-close-white {
  filter: invert(0);
  opacity: 0.6;
}

html.light-theme .btn-close-white:hover,
body.light-theme .btn-close-white:hover {
  opacity: 1;
}

html.light-theme .sidebar-form-select,
body.light-theme .sidebar-form-select {
  background: #ffffff;
  border-color: #e2e8f0;
}

html.light-theme .sidebar-form-select:focus,
body.light-theme .sidebar-form-select:focus {
  border-color: #0891b2;
}

html.light-theme .btn-sidebar-save,
body.light-theme .btn-sidebar-save {
  background: #0891b2;
  color: #ffffff;
}

html.light-theme .btn-sidebar-save:hover,
body.light-theme .btn-sidebar-save:hover {
  background: #0e7490;
  color: #ffffff;
}

html.light-theme .form-control,
body.light-theme .form-control {
  background: #ffffff;
  border-color: #e2e8f0;
  color: #1e293b;
}

html.light-theme .form-control:focus,
body.light-theme .form-control:focus {
  background: #ffffff;
  border-color: #0891b2;
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}

html.light-theme .form-select,
body.light-theme .form-select {
  background: #ffffff;
  border-color: #e2e8f0;
  color: #1e293b;
}

html.light-theme .form-select:focus,
body.light-theme .form-select:focus {
  background: #ffffff;
  border-color: #0891b2;
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}

html.light-theme .info-item,
body.light-theme .info-item {
  background: rgba(8, 145, 178, 0.05);
  border-color: #e2e8f0;
}

html.light-theme .note-content-wrapper,
body.light-theme .note-content-wrapper {
  background: rgba(0, 0, 0, 0.02);
  border-color: #e2e8f0;
}

html.light-theme .note-content-header,
body.light-theme .note-content-header {
  background: rgba(8, 145, 178, 0.05);
  border-color: #e2e8f0;
}

html.light-theme .alert-banner.alert-warning,
body.light-theme .alert-banner.alert-warning {
  background: rgba(217, 119, 6, 0.08);
  color: #b45309;
  border-left-color: #d97706;
}

html.light-theme .alert-banner.alert-info,
body.light-theme .alert-banner.alert-info {
  background: rgba(8, 145, 178, 0.08);
  color: #0e7490;
  border-left-color: #0891b2;
}

html.light-theme .alert-banner.alert-secondary,
body.light-theme .alert-banner.alert-secondary {
  background: rgba(100, 116, 139, 0.08);
  color: #475569;
  border-left-color: #64748b;
}

html.light-theme .view-content-text,
body.light-theme .view-content-text {
  background: rgba(0, 0, 0, 0.02);
  color: #1e293b;
}

html.light-theme .download-icon i,
body.light-theme .download-icon i {
  color: #0891b2;
}

html.light-theme .btn-primary,
body.light-theme .btn-primary {
  color: #ffffff;
}

html.light-theme .btn-primary:hover,
body.light-theme .btn-primary:hover {
  color: #ffffff;
}

html.light-theme .btn-outline-primary:hover,
body.light-theme .btn-outline-primary:hover {
  color: #ffffff;
}

html.light-theme .feature-button,
body.light-theme .feature-button {
  color: #ffffff;
}

html.light-theme .feature-button:hover,
body.light-theme .feature-button:hover {
  color: #ffffff;
}

html.light-theme .hero-section,
body.light-theme .hero-section {
  background: linear-gradient(135deg, rgba(8, 145, 178, 0.08), rgba(8, 145, 178, 0.03));
  border-color: rgba(8, 145, 178, 0.15);
}

html.light-theme .privacy-section,
body.light-theme .privacy-section {
  background: rgba(8, 145, 178, 0.03);
  border-color: rgba(8, 145, 178, 0.1);
}

html.light-theme .cta-button.primary,
body.light-theme .cta-button.primary {
  background: #0891b2;
  color: #ffffff;
}

html.light-theme .cta-button.primary:hover,
body.light-theme .cta-button.primary:hover {
  background: #0e7490;
  color: #ffffff;
}

html.light-theme .cta-button.secondary,
body.light-theme .cta-button.secondary {
  border-color: #0891b2;
  color: #0891b2;
}

html.light-theme .cta-button.secondary:hover,
body.light-theme .cta-button.secondary:hover {
  background: #0891b2;
  color: #ffffff;
}

/* Base Reset & Typography */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: var(--font-primary);
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-top: var(--header-height);
}

body > .right-content {
  flex: 1 0 auto;
}

body > footer {
  flex-shrink: 0;
  margin-top: auto;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-color);
  line-height: 1.2;
}

/* Fixed Header */
.navbar.fixed-top {
  height: var(--header-height);
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1030;
  padding: 0;
}

html.light-theme .navbar.fixed-top,
body.light-theme .navbar.fixed-top {
  background: rgba(245, 247, 250, 0.95);
}

.navbar-dark {
  background-color: rgba(10, 14, 26, 0.95) !important;
}

html.light-theme .navbar-dark,
body.light-theme .navbar-dark {
  background-color: rgba(245, 247, 250, 0.95) !important;
}

/* Navbar Container: Three-column layout */
.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
}

/* Navbar Sections */
.navbar-section {
  display: flex;
  align-items: center;
  flex: 1;
}

.navbar-left {
  justify-content: flex-start;
}

.navbar-center {
  justify-content: center;
  flex: 0 0 auto;
}

.navbar-right {
  justify-content: flex-end;
}

/* Logo */
.navbar-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--transition-fast);
  padding: 0;
}

.navbar-brand:hover {
  transform: translateY(-1px);
}

.navbar-logo {
  height: 60px;
  width: auto;
  transition: var(--transition-fast);
  filter: brightness(1.1);
  animation: float 3s ease-in-out infinite;
}

.navbar-brand:hover .navbar-logo {
  transform: scale(1.05);
  filter: brightness(1.3);
  animation-play-state: paused;
}

/* Navigation Links */
.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  padding: var(--padding-button);
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  font-weight: 500;
  font-size: 0.95rem;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--accent-color);
  background: rgba(var(--accent-color-rgb), 0.1);
}

.navbar-nav .nav-link i {
  font-size: 1.4rem;
  color: var(--accent-color);
}

.navbar-nav .nav-link:hover i,
.navbar-nav .nav-link.active i {
  color: var(--accent-color);
}

.nav-link-text {
  display: inline-block;
}

/* Preferences Button */
.btn-navbar-preferences {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  padding: var(--padding-button);
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
}

.btn-navbar-preferences:hover {
  color: var(--accent-color);
  border-color: var(--accent-color);
  background: rgba(var(--accent-color-rgb), 0.1);
}

.btn-navbar-preferences i {
  font-size: 1.4rem;
  color: var(--accent-color);
}

/* Navbar Toggler */
.navbar-toggler {
  border: none;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  background: transparent;
  transition: all var(--transition-fast);
  position: relative;
}

.navbar-toggler:hover {
  background: rgba(255, 255, 255, 0.05);
}

.navbar-toggler:active {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(0.95);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 2px rgba(var(--accent-color-rgb), 0.2);
  outline: none;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(226, 232, 240, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 1.5rem;
  height: 1.5rem;
  transition: opacity var(--transition-fast);
}

.navbar-toggler:hover .navbar-toggler-icon {
  opacity: 1;
}

/* Main Content Layout */
main {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

.right-content {
  flex: 1 0 auto;
  padding: var(--spacing-2xl) var(--spacing-xl);
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
  transform: translateY(15px);
  width: 100%;
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.page-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--padding-card);
  width: 100%;
}

/* Hero Section */
.hero-section {
  text-align: center;
  padding: var(--spacing-xl) 0 calc(var(--spacing-xl) + var(--spacing-sm));
  background: linear-gradient(135deg, rgba(var(--accent-color-rgb), 0.15), rgba(var(--accent-color-rgb), 0.05));
  border: 1px solid rgba(var(--accent-color-rgb), 0.1);
  border-radius: var(--border-radius);
  margin-bottom: 3rem;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

.hero-logo {
  margin-bottom: 2rem;
}

.hero-logo-image {
  height: 80px;
  width: auto;
  filter: brightness(1.2) drop-shadow(0 4px 12px rgba(var(--accent-color-rgb), 0.3));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: var(--transition-fast);
  display: inline-block;
  cursor: pointer;
}

.hero-title:hover {
  transform: scale(1.05);
  filter: brightness(1.3);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

.hero-banner {
  background: linear-gradient(135deg, rgba(var(--accent-color-rgb), 0.15), rgba(var(--accent-color-rgb), 0.05));
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-color);
  padding: var(--spacing-3xl) var(--spacing-2xl);
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.7s ease forwards;
  opacity: 0;
  transform: translateY(20px);
}

.hero-banner h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-banner .display-5 {
  font-size: 2.5rem;
  font-weight: 700;
}

.hero-banner p {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.hero-banner .lead {
  font-size: 1.25rem;
  color: var(--text-color);
  font-weight: 500;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: 4rem;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--padding-card);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-hover));
  transform: scaleX(0);
  transition: var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(var(--accent-color-rgb), 0.3);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: rgba(var(--accent-color-rgb), 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  transition: var(--transition-normal);
}

.feature-icon i {
  font-size: 1.5rem;
  color: var(--accent-color);
}

.feature-card:hover .feature-icon {
  background: rgba(var(--accent-color-rgb), 0.2);
  transform: scale(1.1);
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.coming-soon-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(var(--warning-color), 0.2);
  color: var(--warning-color);
  border-radius: 1rem;
  margin-left: 0.5rem;
  font-weight: 500;
}

.feature-description {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.feature-details {
  margin-bottom: 1.5rem;
  text-align: left;
}

.feature-details ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-details li {
  padding: var(--spacing-sm) 0;
  color: var(--text-muted);
  position: relative;
  padding-left: 1.5rem;
}

.feature-details li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-color);
  font-weight: bold;
}

.feature-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-sm);
  padding: var(--padding-button);
  background: var(--accent-color);
  color: #000;
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  font-weight: 500;
  transition: var(--transition-fast);
  margin: 0 auto;
  width: 100%;
  max-width: 250px;
}

.feature-button:hover {
  background: var(--accent-hover);
  transform: translateX(5px);
  text-decoration: none;
  color: #000;
}

.feature-button:disabled,
.feature-button[style*="opacity"] {
  opacity: 0.5;
  cursor: not-allowed;
}

.feature-button:disabled:hover,
.feature-button[style*="opacity"]:hover {
  transform: none;
}

/* Privacy Section */
.privacy-section {
  background: rgba(var(--accent-color-rgb), 0.05);
  border: 1px solid rgba(var(--accent-color-rgb), 0.1);
  border-radius: var(--border-radius);
  padding: var(--spacing-2xl);
  margin-bottom: 4rem;
  text-align: center;
}

.privacy-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-md);
}

.privacy-title i {
  color: var(--accent-color);
}

.privacy-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.privacy-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--gap-lg);
}

.privacy-feature {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  padding: var(--spacing-md);
  background: rgba(var(--accent-color-rgb), 0.1);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.privacy-feature:hover {
  background: rgba(var(--accent-color-rgb), 0.15);
  transform: translateY(-2px);
}

.privacy-feature i {
  color: var(--accent-color);
  font-size: 1.25rem;
}

.privacy-feature span {
  color: var(--text-color);
  font-weight: 500;
}

/* Call to Action */
.cta-section {
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.cta-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.cta-buttons {
  display: flex;
  gap: var(--gap-md);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-md);
  padding: var(--padding-button-lg);
  border-radius: var(--border-radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
  transition: var(--transition-fast);
  text-align: center;
}

.cta-button.primary {
  background: var(--accent-color);
  color: #000;
}

.cta-button.primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: #000;
  text-decoration: none;
}

.cta-button.secondary {
  background: transparent;
  color: var(--accent-color);
  border: 2px solid var(--accent-color);
}

.cta-button.secondary:hover {
  background: var(--accent-color);
  color: #000;
  transform: translateY(-2px);
  text-decoration: none;
}

/* Cards */
.card-dark {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--padding-card);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
  transform: translateY(15px);
  margin-top: 1.5rem;
}

.card-dark:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  margin-bottom: 1.5rem;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  padding: var(--padding-card-sm);
  border-bottom: 1px solid var(--border-color);
  background: rgba(var(--accent-color-rgb), 0.05);
}

.card-body {
  padding: var(--padding-card-sm);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-sm);
  padding: var(--padding-button);
  border: none;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-fast);
  font-size: 0.875rem;
  line-height: 1.5;
  text-align: center;
}

.btn-accent {
  background: var(--accent-color);
  color: #000;
  font-weight: 600;
}

.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: #000;
}

.btn-cta {
  background: var(--accent-color);
  color: #000;
  padding: var(--padding-input) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid var(--accent-color);
  transition: var(--transition-fast);
}

.btn-cta:hover {
  background: transparent;
  color: var(--accent-color);
  border-color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary {
  background: var(--accent-color);
  color: #000;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-sm);
}

.btn-primary i {
  margin: 0;
  flex-shrink: 0;
}

.btn-primary.btn-lg {
  padding: var(--padding-button-lg);
  font-size: 1rem;
}

.btn-primary.w-100 {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--gap-sm);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #000;
}

.btn-outline-primary {
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--accent-color);
  color: #000;
}

.btn-outline-success {
  border: 2px solid var(--success-color);
  color: var(--success-color);
  background: transparent;
}

.btn-outline-success:hover {
  background: var(--success-color);
  color: white;
}

.btn-outline-warning {
  border: 2px solid var(--warning-color);
  color: var(--warning-color);
  background: transparent;
}

.btn-outline-warning:hover {
  background: var(--warning-color);
  color: #000;
}

.btn-outline-light {
  border: 2px solid var(--border-color);
  color: var(--text-color);
  background: transparent;
}

.btn-outline-light:hover {
  background: var(--border-color);
  color: var(--text-color);
}

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

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

.btn-lg {
  padding: var(--padding-button-lg);
  font-size: 1rem;
}

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

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-color);
}

.form-control {
  width: 100%;
  padding: var(--padding-input);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-color);
  transition: var(--transition-fast);
  font-family: var(--font-primary);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(var(--accent-color-rgb), 0.1);
  background: var(--card-bg);
  color: var(--text-color);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.form-select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(var(--accent-color-rgb), 0.1);
}

.form-check-input {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
}

.form-check-input:checked {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

.form-check-input:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(var(--accent-color-rgb), 0.1);
}

.form-check-label {
  color: var(--text-color);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  transition: color var(--transition-fast);
}

.form-check-label:hover {
  color: var(--accent-color);
}

.form-check-label i {
  color: var(--accent-color);
  font-size: 1.1rem;
}

.form-text {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Alerts */
.alert {
  padding: var(--spacing-md) calc(var(--spacing-md) + var(--spacing-xs));
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-left-color: var(--success-color);
  color: var(--success-color);
}

.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  border-left-color: var(--error-color);
  color: var(--error-color);
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border-left-color: #3b82f6;
  color: #3b82f6;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-left-color: var(--warning-color);
  color: var(--warning-color);
}

/* Feature Cards */
.feature-card {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-normal);
}

.feature-card-hover {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--card-bg);
}

.feature-card-hover:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-color);
  background: rgba(var(--accent-color-rgb), 0.05);
}

.feature-card .text-light-box {
  color: var(--text-color);
}

.feature-card:hover .text-light-box {
  color: var(--accent-color);
}

/* Page Header */
.header-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-md);
}

.page-header {
  text-align: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.page-description {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Text Utilities */
.text-muted {
  color: var(--text-muted) !important;
}

.text-light-box {
  color: var(--text-color) !important;
}

.text-primary {
  color: var(--accent-color) !important;
}

.text-success {
  color: var(--success-color) !important;
}

.text-warning {
  color: var(--warning-color) !important;
}

.text-info {
  color: var(--accent-color) !important;
}

.text-secondary {
  color: var(--text-muted) !important;
}

/* Sidebar */
.offcanvas {
  background-color: var(--card-bg);
  border-right: 1px solid var(--border-color);
  width: var(--sidebar-width) !important;
}

.offcanvas-header {
  border-bottom: 1px solid var(--border-color);
  padding: var(--padding-card-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.offcanvas-title {
  color: var(--text-color);
  font-weight: 700;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  margin: 0;
}

.offcanvas-title i {
  color: var(--accent-color);
  font-size: 1.1rem;
}

.offcanvas-body {
  padding: var(--padding-card-sm);
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
}

/* Sidebar Navigation Links */
.sidebar-nav {
  margin-bottom: 2rem;
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  color: var(--text-color);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-sm);
  margin-bottom: 0.5rem;
  transition: var(--transition-fast);
  text-decoration: none;
  font-weight: 500;
  border: 1px solid transparent;
}

.sidebar-nav-link:hover {
  color: var(--accent-color);
  background: rgba(var(--accent-color-rgb), 0.1);
  border-color: rgba(var(--accent-color-rgb), 0.2);
  transform: translateX(4px);
}

.sidebar-nav-link i {
  font-size: 1.25rem;
  color: var(--accent-color);
  width: 24px;
  text-align: center;
}

.sidebar-nav-link span {
  flex: 1;
}

/* Sidebar Preferences Section */
.sidebar-preferences {
  margin-top: auto;
  padding-top: 2rem;
}

.sidebar-separator {
  border-color: var(--border-color);
  margin: 0 0 1.5rem 0;
  opacity: 0.5;
}

.sidebar-preferences-title {
  color: var(--text-color);
  font-weight: 600;
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.sidebar-form-group {
  margin-bottom: 1.25rem;
}

.sidebar-form-label {
  display: block;
  color: var(--text-color);
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.sidebar-form-select {
  width: 100%;
  padding: var(--gap-md) var(--spacing-md);
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-color);
  font-size: 0.9rem;
  transition: var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

.sidebar-form-select:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(var(--accent-color-rgb), 0.1);
}

.sidebar-form-select option {
  background: var(--card-bg);
  color: var(--text-color);
}

/* Sidebar Save Button */
.btn-sidebar-save {
  width: 100%;
  padding: var(--padding-input) var(--gap-lg);
  background: var(--accent-color);
  border: none;
  border-radius: var(--border-radius-sm);
  color: #000;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-sm);
  margin-top: 0.5rem;
}

.btn-sidebar-save:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: #000;
}

.btn-sidebar-save i {
  font-size: 1.1rem;
}

/* Sidebar Footer */
.sidebar-footer {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.sidebar-footer-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--gap-sm);
  flex-wrap: wrap;
}

.sidebar-footer-logo {
  display: inline-block;
  vertical-align: middle;
  margin: 0 0.25rem;
  transition: var(--transition-fast);
}

.sidebar-footer-logo img {
  height: 28px;
  width: auto;
  filter: brightness(1.1);
  transition: var(--transition-fast);
}

.sidebar-footer-logo:hover img {
  transform: scale(1.05);
  filter: brightness(1.3);
}

/* Legacy support for old nav-link classes */
.offcanvas-body .nav-link {
  color: var(--text-muted);
  padding: var(--padding-input);
  border-radius: var(--border-radius-sm);
  margin-bottom: 0.25rem;
  transition: var(--transition-fast);
}

.offcanvas-body .nav-link:hover {
  color: var(--accent-color);
  background: rgba(var(--accent-color-rgb), 0.1);
}

/* Modal */
.modal-content {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-color);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  color: var(--text-color);
  font-weight: 700;
}

.modal-body {
  color: var(--text-color);
}

.modal-footer {
  border-top: 1px solid var(--border-color);
}

.btn-close {
  filter: invert(1);
}

.btn-close-white {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* Preferences Modal - Redesigned */
.preferences-modal-dialog {
  max-width: 500px;
}

.preferences-modal-content {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.preferences-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--padding-card-sm) var(--spacing-xl);
  background: rgba(var(--accent-color-rgb), 0.05);
  border-bottom: 1px solid var(--border-color);
}

.preferences-header-content {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
}

.preferences-header-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(var(--accent-color-rgb), 0.15);
  border-radius: 50%;
  color: var(--accent-color);
}

.preferences-header-icon i {
  font-size: 1.25rem;
}

.preferences-modal-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-color);
}

.btn-close-preferences {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  padding: var(--spacing-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius-sm);
}

.btn-close-preferences:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-color);
}

.preferences-modal-body {
  padding: var(--padding-card);
}

.preference-item {
  margin-bottom: 1.75rem;
}

.preference-item:last-child {
  margin-bottom: 0;
}

.preference-item-header {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
  margin-bottom: 0.75rem;
}

.preference-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(var(--accent-color-rgb), 0.1);
  border-radius: var(--border-radius-sm);
  color: var(--accent-color);
  flex-shrink: 0;
}

.preference-icon i {
  font-size: 1rem;
}

.preference-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-color);
  margin: 0;
  cursor: pointer;
}

.preference-select {
  width: 100%;
  padding: var(--gap-md) var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-color);
  font-size: 0.95rem;
  transition: var(--transition-fast);
  cursor: pointer;
}

.preference-select:focus {
  outline: none;
  border-color: var(--accent-color);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(var(--accent-color-rgb), 0.1);
}

.preference-select option {
  background: var(--card-bg);
  color: var(--text-color);
  padding: var(--spacing-sm);
}

.preferences-modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--gap-md);
  padding: var(--padding-card-sm) var(--spacing-xl);
  background: rgba(var(--accent-color-rgb), 0.02);
  border-top: 1px solid var(--border-color);
}

.btn-preferences-cancel {
  padding: var(--padding-button);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  transition: var(--transition-fast);
  cursor: pointer;
}

.btn-preferences-cancel:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-muted);
  color: var(--text-color);
}

.btn-preferences-save {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  padding: var(--padding-button);
  background: var(--accent-color);
  border: none;
  border-radius: var(--border-radius-sm);
  color: #000;
  font-weight: 600;
  transition: var(--transition-fast);
  cursor: pointer;
}

.btn-preferences-save:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(var(--accent-color-rgb), 0.3);
}

.btn-preferences-save i {
  font-size: 1rem;
}

/* Sidebar Preferences Improvements */
.sidebar-preferences-title {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  margin-bottom: 1rem;
}

.sidebar-preferences-title i {
  color: var(--accent-color);
  font-size: 1rem;
}

.sidebar-form-header {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  margin-bottom: 0.5rem;
}

.sidebar-form-header i {
  color: var(--accent-color);
  font-size: 0.9rem;
}

/* Chat Styles */
#messages {
  border: 1px solid var(--border-color);
  padding: var(--spacing-md);
  background-color: var(--card-bg);
  border-radius: var(--border-radius-sm);
  overflow-y: auto;
  min-height: 400px;
  max-height: 600px;
}

/* Legacy message classes - kept for backward compatibility */
.my-msg, .other-msg {
  display: block;
  width: fit-content;
  max-width: 70%;
  margin-bottom: 0.5rem;
  padding: var(--gap-md) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  word-wrap: break-word;
  white-space: pre-wrap;
  color: #fff;
}

.my-msg {
  margin-left: auto;
  text-align: right;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
}

.other-msg {
  margin-right: auto;
  text-align: left;
  background: var(--border-color);
}

#roomInfo {
  margin-top: 1rem;
  padding: var(--spacing-md);
  background-color: rgba(var(--accent-color-rgb), 0.1);
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
}

/* Feature Explanation Grid */
.feature-explanation {
  margin-bottom: 3rem;
}

.explanation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--gap-lg);
  margin-bottom: 3rem;
}

.explanation-item {
  background: rgba(var(--accent-color-rgb), 0.05);
  border: 1px solid rgba(var(--accent-color-rgb), 0.1);
  border-radius: var(--border-radius);
  padding: var(--padding-card-sm);
  text-align: center;
  transition: var(--transition-fast);
}

.explanation-item:hover {
  background: rgba(var(--accent-color-rgb), 0.1);
  transform: translateY(-2px);
}

.explanation-item i {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.explanation-item h4 {
  color: var(--text-color);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.explanation-item p {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0;
}

/* Form Container */
.form-container {
  max-width: 700px;
  margin: 0 auto;
}

.form-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--padding-card);
  box-shadow: var(--shadow-sm);
}

.result-container {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

/* File Upload Styles */
.file-upload-dashboard {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--spacing-xl) 0;
  display: grid;
  gap: var(--spacing-xl);
}

.file-upload-card {
  grid-column: 1 / -1;
}

.file-drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-2xl) var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
  margin-bottom: 2rem;
  background: rgba(var(--accent-color-rgb), 0.02);
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
  border-color: var(--accent-color);
  background: rgba(var(--accent-color-rgb), 0.05);
}

.drop-zone-content {
  pointer-events: auto;
}

.drop-zone-content > * {
  pointer-events: auto;
}

.drop-zone-content h4,
.drop-zone-content p {
  pointer-events: none;
}

.drop-icon {
  font-size: 4rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.drop-zone-content h4 {
  margin: 1rem 0 0.5rem 0;
  color: var(--text-color);
  font-weight: 600;
}

.drop-zone-content p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.drop-zone-content button {
  pointer-events: all;
}

.upload-options {
  background: rgba(var(--accent-color-rgb), 0.05);
  padding: var(--padding-card-sm);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
}

.file-info-card,
.how-it-works-card {
  margin-top: 2rem;
}

.file-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: calc(var(--spacing-md) + var(--spacing-xs));
  margin-bottom: 1.5rem;
}

.file-type-group {
  background: rgba(var(--accent-color-rgb), 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-md);
  transition: all var(--transition-fast);
}

.file-type-group:hover {
  border-color: rgba(var(--accent-color-rgb), 0.3);
  background: rgba(var(--accent-color-rgb), 0.05);
  transform: translateY(-2px);
}

.file-type-group h5 {
  color: var(--accent-color);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  font-weight: 600;
  font-size: 0.95rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.file-type-group h5 i {
  font-size: 1.1rem;
}

.file-type-list {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--spacing-xs) + 0.15rem);
  margin-top: 0.5rem;
}

.file-type-badge {
  background: rgba(var(--accent-color-rgb), 0.1);
  color: var(--text-color);
  padding: calc(var(--spacing-xs) + 0.1rem) calc(var(--spacing-sm) + 0.2rem);
  border-radius: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(var(--accent-color-rgb), 0.2);
  transition: all var(--transition-fast);
  display: inline-block;
}

.file-type-badge:hover {
  background: rgba(var(--accent-color-rgb), 0.15);
  border-color: var(--accent-color);
  transform: scale(1.05);
}

.file-limits {
  padding: var(--spacing-md) calc(var(--spacing-md) + var(--spacing-xs));
  background: rgba(var(--accent-color-rgb), 0.08);
  border-radius: var(--border-radius-sm);
  border-left: 3px solid var(--accent-color);
  margin-top: 1rem;
}

.file-limits p {
  margin: 0;
  color: var(--text-color);
  font-size: 0.9rem;
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
}

.step {
  display: flex;
  align-items: flex-start;
  gap: var(--gap-md);
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--accent-color);
  color: #000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  flex-shrink: 0;
}

.step-content h5 {
  margin: 0 0 0.5rem 0;
  color: var(--text-color);
  font-weight: 600;
}

.step-content p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.upload-progress {
  margin: 1rem 0;
}

.progress {
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--accent-color);
  transition: width var(--transition-normal);
}

/* Ephemeral Elements */
.ephemeral {
  transition: opacity var(--transition-normal);
}

.ephemeral.expiring {
  opacity: 0.5;
}

/* Animations */
@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp var(--transition-normal) ease-in-out;
}

/* Reduce Motion */
.reduce-motion * {
  animation: none !important;
  transition: none !important;
}

.reduce-motion .right-content,
.reduce-motion .card-dark,
.reduce-motion .hero-banner,
.reduce-motion .hero-section,
.reduce-motion .features-grid {
  opacity: 1 !important;
  transform: none !important;
}

/* Room Stats Header */
.room-stats-header {
  background: rgba(var(--accent-color-rgb), 0.1);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

html.light-theme .room-stats-header,
body.light-theme .room-stats-header {
  background: rgba(8, 145, 178, 0.12);
  border-color: rgba(8, 145, 178, 0.2);
  color: #1e293b;
}

.room-stats-header p {
  color: inherit;
  margin-bottom: 0.5rem;
}

.room-stats-header p:last-child {
  margin-bottom: 0;
}

.room-stats-header strong {
  color: inherit;
  font-weight: 600;
}

.room-stats-header span {
  color: inherit;
}

.room-stats-header i {
  color: var(--accent-color);
  transition: var(--transition-fast);
}

.room-stats-header i:hover {
  color: var(--accent-hover);
  transform: scale(1.1);
}

html.light-theme .room-stats-header i,
body.light-theme .room-stats-header i {
  color: #0891b2;
}

html.light-theme .room-stats-header i:hover,
body.light-theme .room-stats-header i:hover {
  color: #0e7490;
}

/* Footer */
footer {
  background: rgba(10, 14, 26, 0.95);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  text-align: center;
  color: var(--text-muted);
  width: 100%;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  margin-top: auto;
}

html.light-theme footer,
body.light-theme footer {
  background: rgba(245, 247, 250, 0.95);
  border-top-color: #e2e8f0;
  color: #64748b;
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-fast);
}

html.light-theme footer a,
body.light-theme footer a {
  color: #64748b;
}

footer a:hover {
  color: var(--accent-color);
  text-decoration: none;
}

html.light-theme footer a:hover,
body.light-theme footer a:hover {
  color: #0891b2;
}

footer img {
  height: 32px;
  width: auto;
  vertical-align: middle;
  margin: 0 5px;
  opacity: 0.9;
  transition: var(--transition-fast);
  filter: brightness(1.1);
}

footer img:hover {
  opacity: 1;
  transform: scale(1.03);
  filter: brightness(1.3);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

footer p {
  margin: 0.5rem 0;
  color: var(--text-muted);
}

html.light-theme footer p,
body.light-theme footer p {
  color: #64748b;
}

footer span {
  color: var(--border-color);
  margin: 0 0.5rem;
}

html.light-theme footer span,
body.light-theme footer span {
  color: #cbd5e1;
}

/* Code Font */
.code-font {
  font-family: var(--font-mono);
}

/* Border Utilities */
.border-secondary {
  border-color: var(--border-color) !important;
}

.border {
  border-color: var(--border-color) !important;
}

/* Responsive Design */
/* Preferences Modal Mobile Responsive */
@media (max-width: 576px) {
  .preferences-modal-dialog {
    margin: 1rem;
    max-width: calc(100% - 2rem);
  }

  .preferences-modal-header {
    padding: calc(var(--spacing-md) + var(--spacing-xs)) var(--gap-lg);
  }

  .preferences-modal-title {
    font-size: 1.25rem;
  }

  .preferences-modal-body {
    padding: var(--padding-card-sm);
  }

  .preferences-modal-footer {
    padding: calc(var(--spacing-md) + var(--spacing-xs)) var(--gap-lg);
    flex-direction: column;
  }

  .btn-preferences-cancel,
  .btn-preferences-save {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .navbar-container {
    padding: 0 1rem;
    position: relative;
  }

  .navbar-section {
    flex: 0 0 auto;
  }

  .navbar-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    flex: 0 0 auto;
  }

  .navbar-brand {
    margin: 0;
  }

  .navbar-logo {
    height: 50px;
  }
  
  /* Ensure hamburger menu doesn't interfere with centering */
  .navbar-toggler {
    position: relative;
    z-index: 10;
  }

  .navbar-nav .nav-link {
    padding: calc(var(--spacing-sm) + 0.125rem) var(--spacing-md);
    font-size: 0.9rem;
  }
  
  .navbar-toggler {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: none;
    background: transparent;
    opacity: 0.9;
  }
  
  .navbar-toggler:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.06);
  }
  
  .navbar-toggler-icon {
    width: 1.45rem;
    height: 1.45rem;
  }

  .navbar-nav .nav-link i {
    font-size: 1.25rem;
  }

  .btn-navbar-preferences {
    padding: calc(var(--spacing-sm) + 0.125rem) var(--spacing-md);
    font-size: 0.9rem;
  }

  .btn-navbar-preferences i {
    font-size: 1.25rem;
  }

  /* Sidebar responsive adjustments */
  .offcanvas {
    width: 85% !important;
    max-width: 320px !important;
  }

  .sidebar-nav-link {
    padding: var(--padding-input);
    font-size: 0.95rem;
  }

  .sidebar-form-select {
    font-size: 0.85rem;
    padding: calc(var(--spacing-sm) + 0.125rem) var(--padding-input);
    padding-right: 2.25rem;
  }

  .btn-sidebar-save {
    padding: var(--padding-button);
    font-size: 0.9rem;
  }

  .sidebar-footer-text {
    font-size: 0.8rem;
  }

  .sidebar-footer-logo img {
    height: 24px;
  }

  .container {
    padding: 0 1rem;
  }
  
  .right-content {
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .page-container {
    padding: var(--spacing-md);
  }
  
  .hero-banner {
    padding: var(--spacing-xl) var(--gap-lg);
    margin-top: var(--spacing-md);
  }
  
  .hero-banner h1,
  .hero-banner .display-5 {
    font-size: 2rem;
  }
  
  .hero-banner p {
    font-size: 1rem;
  }
  
  .header-title {
    font-size: 2rem;
    flex-direction: column;
    gap: var(--gap-sm);
  }
  
  .navbar-brand {
    font-size: 1rem;
  }
  
  .navbar-brand img {
    height: 35px;
  }
  
  .card-dark {
    padding: var(--padding-card-sm);
  }
  
  .navbar-nav .nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .navbar-container {
    padding: 0 0.75rem;
    position: relative;
  }

  .navbar-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }

  .navbar-logo {
    height: 45px;
  }

  .navbar-nav .nav-link i {
    font-size: 1.15rem;
  }

  .btn-navbar-preferences i {
    font-size: 1.15rem;
  }

  .navbar-toggler {
    padding: var(--spacing-xs);
    border: none;
    background: transparent;
    opacity: 0.85;
  }
  
  .navbar-toggler:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.08);
  }
  
  .navbar-toggler-icon {
    width: 1.4rem;
    height: 1.4rem;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(226, 232, 240, 0.95)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2.5' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }

  .container {
    padding: 0 0.5rem;
  }
  
  .right-content {
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .page-container {
    padding: var(--spacing-sm);
  }
  
  .hero-banner {
    padding: var(--padding-card-sm) var(--spacing-md);
  }
  
  .hero-banner h1,
  .hero-banner .display-5 {
    font-size: 1.75rem;
  }
  
  .header-title {
    font-size: 1.75rem;
  }
  
  .card-dark {
    padding: var(--spacing-md);
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-grid { display: grid; }

.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-sm-center { justify-content: center; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }
.min-vh-100 { min-height: 100vh; }

.mt-auto { margin-top: auto; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }
.my-5 { margin-top: 3rem; margin-bottom: 3rem; }

.p-0 { padding: 0; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.position-fixed { position: fixed; }
.position-sticky { position: sticky; }
.position-relative { position: relative; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.gap-3 { gap: 1rem; }
.mx-auto { margin-left: auto; margin-right: auto; }

.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.fw-light { font-weight: 300; }

.fs-4 { font-size: 1.25rem; }
.small { font-size: 0.875rem; }

/* Toast Notifications - Matching Chat Theme */
.toast-notification {
  transition: all var(--transition-normal);
}

html.light-theme .toast-notification,
body.light-theme .toast-notification {
  background: #ffffff;
  border-color: #e2e8f0;
  color: #1e293b;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

html.light-theme .toast-notification i,
body.light-theme .toast-notification i {
  color: #0891b2;
}

/* Chat Room Unread Highlighting */
.room-box.room-unread {
  border-left: 4px solid var(--accent-color);
  background: rgba(var(--accent-color-rgb), 0.05);
  animation: unreadPulse 2s ease-in-out infinite;
}

.room-box.room-unread .room-box-header {
  position: relative;
}

.room-box.room-unread .room-box-header::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent-color);
  animation: unreadPulse 2s ease-in-out infinite;
}

.unread-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: var(--accent-color);
  color: #ffffff;
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 8px;
  box-shadow: 0 2px 8px rgba(var(--accent-color-rgb), 0.4);
  animation: badgePulse 1.5s ease-in-out infinite;
}

@keyframes unreadPulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes badgePulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 2px 8px rgba(var(--accent-color-rgb), 0.4);
  }
  50% {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(var(--accent-color-rgb), 0.6);
  }
}

/* Light theme adjustments */
html.light-theme .room-box.room-unread,
body.light-theme .room-box.room-unread {
  background: rgba(0, 212, 255, 0.08);
  border-left-color: #00d4ff;
}

html.light-theme .room-box.room-unread .room-box-header::before,
body.light-theme .room-box.room-unread .room-box-header::before {
  background: #00d4ff;
}

html.light-theme .unread-badge,
body.light-theme .unread-badge {
  background: #00d4ff;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 212, 255, 0.3);
}