/* SlideWiz Modern Design System */
/* Inspired by Silicon Valley startups like Linear, Vercel, and Stripe */

/* Firebase Authentication Styles */
.user-auth-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: 1rem;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-color);
}

.user-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Auth Modal */
.auth-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.auth-modal-content {
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow-xl);
  width: 90%;
  max-width: 400px;
  max-height: 90vh;
  overflow-y: auto;
}

.auth-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.auth-modal-header h2 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.close-modal {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.2s ease;
}

.close-modal:hover {
  background-color: var(--gray-100);
  color: var(--text-primary);
}

.auth-modal-body {
  padding: 1.5rem;
}

.auth-description {
  margin: 0 0 1.5rem 0;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.btn-google {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  background: var(--white);
  color: var(--text-primary);
  border-radius: 8px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 1rem;
}

.btn-google:hover {
  background-color: var(--gray-50);
  border-color: var(--gray-300);
}

.auth-divider {
  position: relative;
  text-align: center;
  margin: 1.5rem 0;
}

.auth-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-color);
}

.auth-divider span {
  background: var(--white);
  padding: 0 1rem;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

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

.auth-tab {
  flex: 1;
  padding: 0.75rem;
  background: none;
  border: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

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

.form-group {
  margin-bottom: 1rem;
}

.form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: var(--font-size-sm);
  transition: all 0.2s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.btn-full {
  width: 100%;
}

.auth-footer {
  margin-top: 1.5rem;
  text-align: center;
  color: var(--text-muted);
}

/* Mobile auth styles */
.mobile-user-auth {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.mobile-user-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mobile-user-details {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mobile-user-details .user-avatar {
  width: 28px;
  height: 28px;
}

.mobile-user-details .user-name {
  font-size: var(--font-size-sm);
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .user-auth-section {
    display: none;
  }
  
  .auth-modal-content {
    margin: 1rem;
    width: calc(100% - 2rem);
  }
  
  .auth-modal-header,
  .auth-modal-body {
    padding: 1rem;
  }
}

/* Password error styling */
.password-error {
  background-color: #ffebee;
  border: 1px solid #f44336;
  border-radius: 4px;
  padding: 8px;
  margin-bottom: 10px;
}

/* Verification notice styling */
.verification-notice {
  background-color: #e8f5e8 !important;
  border: 1px solid #4caf50;
  color: #2e7d32;
}

/* Form validation styling */
.form-group input:invalid:focus {
  border-color: #f44336;
  outline: none;
  box-shadow: 0 0 5px rgba(244, 67, 54, 0.3);
}

.form-group input:valid:focus {
  border-color: #4caf50;
  outline: none;
  box-shadow: 0 0 5px rgba(76, 175, 80, 0.3);
}

/* Password strength indicator */
.password-strength {
  margin-top: 5px;
}

.strength-bar {
  width: 100%;
  height: 4px;
  background-color: #e0e0e0;
  border-radius: 2px;
  overflow: hidden;
}

.strength-indicator {
  height: 100%;
  width: 0%;
  transition: width 0.3s ease, background-color 0.3s ease;
  border-radius: 2px;
}

.strength-text {
  font-size: 0.8em;
  margin-top: 3px;
  transition: color 0.3s ease;
}

/* Avatar styling */
#userAvatar, #mobileUserAvatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #e0e0e0;
  background-color: #f5f5f5;
}

/* Ensure generated avatars look crisp */
#userAvatar[src*="data:image/svg"], #mobileUserAvatar[src*="data:image/svg"] {
  border: none;
}

/* User profile link styling */
.user-profile-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s;
}

.user-profile-link:hover {
  opacity: 0.8;
}

.user-profile-link .user-name {
  margin-left: 0.5rem;
}

.mobile-user-details.user-profile-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
  padding: 0.5rem 0;
}

/* Consistent sizing for auth section to prevent layout shift */
.user-auth-section {
  min-width: 200px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

#authButton {
  min-width: 200px;
  height: 40px;
}

#userInfo {
  min-width: 200px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

/* Auth loading state */
.auth-loading {
  min-width: 200px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid #6366f1;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
  .user-auth-section {
    min-width: auto;
  }
  
  #userInfo {
    min-width: auto;
  }
  
  .user-profile-dropdown {
    min-width: auto;
  }
}

/* User dropdown styles */
.user-profile-dropdown {
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
  padding: 0.5rem;
  border-radius: 6px;
  transition: background-color 0.2s;
  min-width: 200px;
  min-height: 40px;
  justify-content: flex-start;
}

.user-profile-dropdown:hover {
  background-color: var(--gray-100);
}

.dropdown-arrow {
  margin-left: 0.5rem;
  opacity: 0.7;
  transition: transform 0.2s;
}

.user-profile-dropdown:hover .dropdown-arrow {
  opacity: 1;
}

.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 180px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  overflow: hidden;
}

.dropdown-item {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0.75rem 1rem;
  text-decoration: none;
  color: var(--gray-700);
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color 0.2s;
}

.dropdown-item:hover {
  background-color: var(--gray-50);
  color: var(--gray-900);
}

.dropdown-item svg {
  margin-right: 0.75rem;
  opacity: 0.7;
}

.dropdown-button {
  text-align: left;
  font-family: inherit;
}

/* Mobile dropdown styles */
.mobile-user-actions {
  margin-top: 1rem;
  border-top: 1px solid var(--gray-200);
  padding-top: 1rem;
}

.mobile-dropdown-item {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0.75rem 0;
  text-decoration: none;
  color: var(--gray-700);
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.9rem;
}

.mobile-dropdown-item svg {
  margin-right: 0.75rem;
  opacity: 0.7;
}

.mobile-dropdown-button {
  text-align: left;
  font-family: inherit;
}

/* Reset and base styles */
*, *::before, *::after {
  box-sizing: border-box;
}

:root {
  /* Modern color palette */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #a5b4fc;
  --secondary: #06b6d4;
  --accent: #f59e0b;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Neutral colors */
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Semantic colors */
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  --bg-primary: var(--white);
  --bg-secondary: var(--gray-50);
  --border-color: var(--gray-200);
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Animations */
  --transition-fast: 150ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 300ms ease-out;
  
  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
}

/* Base styles */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-4) 0;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); font-weight: 700; }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

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

/* Layout */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-16) 0;
}

.section-sm {
  padding: var(--space-12) 0;
}

.section-tight {
  padding: var(--space-8) 0;
}

.section-extra-tight {
  padding: var(--space-6) 0;
}

/* Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: var(--transition-base);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  min-width: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  box-sizing: border-box;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.mobile-menu-toggle:hover {
  background: var(--bg-secondary);
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4);
}

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

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-nav-links .nav-link {
  padding: var(--space-3);
  display: block;
  text-align: center;
}

.mobile-language-selector {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-color);
}

.mobile-language-selector a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
}

.mobile-language-selector a:hover {
  color: var(--primary);
  background: var(--bg-secondary);
}

.mobile-language-selector a.active {
  color: var(--primary);
  font-weight: 600;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.logo-icon {
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

/* Hero section */
.hero {
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236366f1' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--gray-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-10);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Cards */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

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

.card-header {
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
}

.card-body {
  flex: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-base);
  min-height: 44px;
  white-space: nowrap;
}

.btn:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--primary-light);
}

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

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

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

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

/* Upload zone */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  text-align: center;
  background: var(--bg-secondary);
  transition: var(--transition-base);
  cursor: pointer;
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.02);
}

.upload-zone.dragover {
  transform: scale(1.02);
}

.upload-icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4) auto;
  color: white;
}

.upload-text {
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.upload-subtext {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* Process flow */
.process-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin: var(--space-16) 0;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step::before {
  content: counter(step-counter);
  counter-increment: step-counter;
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 24px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 600;
  z-index: 1;
}

.process-flow {
  counter-reset: step-counter;
}

.process-step::after {
  content: '';
  position: absolute;
  top: 2px;
  left: calc(100% - var(--space-4));
  width: calc(var(--space-8) + 2px);
  height: 2px;
  background: var(--border-color);
  z-index: 0;
}

.process-step:last-child::after {
  display: none;
}

.process-icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4) auto;
  color: white;
  font-size: var(--font-size-xl);
}

.process-title {
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.process-description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin: var(--space-16) 0;
}

.feature-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: left;
  transition: var(--transition-base);
}

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

.feature-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: white;
}

/* Status indicators */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-md);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.status-processing {
  background: rgba(251, 191, 36, 0.1);
  color: #d97706;
  border: 1px solid rgba(251, 191, 36, 0.2);
}

.status-completed {
  background: rgba(34, 197, 94, 0.1);
  color: #16a34a;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.status-failed {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Footer */
.footer {
  background: var(--gray-50);
  border-top: 1px solid var(--border-color);
  padding: var(--space-12) 0 var(--space-6) 0;
  margin-top: var(--space-20);
}

.footer-content {
  text-align: center;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-4);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: var(--transition-fast);
}

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

/* Language selector */
.language-selector {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  margin-bottom: var(--space-4);
}

.language-selector a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.language-selector a:hover,
.language-selector a.active {
  color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
}

/* Animations */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--gray-200);
  border-top: 2px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Responsive design */
@media (max-width: 768px) {
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .process-flow {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .process-step::before {
    position: static;
    transform: none;
    margin: 0 auto var(--space-2) auto;
  }
  
  .process-step::after {
    display: none;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .navbar-content {
    padding: 0 var(--space-4);
  }
  
  .container {
    padding: 0 var(--space-4);
  }
  
  .upload-grid {
    grid-template-columns: 1fr;
  }
  
  /* Mobile navbar navigation */
  .navbar {
    position: relative;
  }
  
  .navbar-nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .mobile-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    z-index: 100;
  }
  }
}

/* Upload zone states */
.upload-zone.has-file {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.02);
}

.upload-zone.has-file .upload-icon {
  background: linear-gradient(135deg, var(--success), var(--secondary));
}

/* Shared Presentation Styles */
.presentation-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    transition: var(--transition-base);
}

.presentation-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.presentation-info {
    flex: 1;
    min-width: 0;
}

.presentation-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.presentation-status {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.presentation-actions {
    display: flex;
    gap: var(--space-2);
    flex-shrink: 0;
    margin-left: auto;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.action-btn:hover {
    background: var(--gray-50);
    color: var(--text-primary);
}

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

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

.action-btn.danger {
    color: var(--error);
}

.action-btn.danger:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

/* Shared Advanced Options Styles */
.advanced-options {
    margin-top: var(--space-4);
}

.advanced-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-3);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
}

.advanced-toggle:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.advanced-toggle .chevron {
    margin-left: auto;
    transition: transform 0.2s ease;
}

.advanced-toggle.expanded .chevron {
    transform: rotate(180deg);
}

.advanced-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    padding: var(--space-4);
}

.advanced-section h4 {
    margin: 0 0 var(--space-2) 0;
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.advanced-description {
    margin: 0 0 var(--space-4) 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.pdf-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-base);
}

.pdf-upload-zone:hover {
    border-color: var(--primary-light);
    background: var(--bg-secondary);
}

.pdf-upload-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.pdf-upload-icon {
    margin-bottom: var(--space-2);
    color: var(--text-muted);
}

.pdf-upload-text {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.pdf-upload-subtext {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.pdf-selected .pdf-upload-zone {
    border-color: var(--success);
    background: var(--success-light);
}

.pdf-selected .pdf-upload-icon {
    color: var(--success);
}

/* Loading Spinner Styles */
.auth-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
    min-height: 40px;
}

.loading-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Space utilities */
.space-y-3 > * + * {
  margin-top: var(--space-3);
}

.mb-8 { margin-bottom: var(--space-8); }
.max-w-4xl { max-width: 56rem; }

/* Utilities */
.hidden { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-3xl { font-size: var(--font-size-3xl); font-weight: 800; }
.text-xl { font-size: var(--font-size-xl); }
.text-lg { font-size: var(--font-size-lg); font-weight: 600; }
.text-gray-900 { color: var(--gray-900); }
.text-gray-600 { color: var(--gray-600); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-16 { margin-bottom: var(--space-16); }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.max-w-process { max-width: 800px; }
.max-w-2xl { max-width: 42rem; }
.w-full { width: 100%; }
.mx-auto { margin-left: auto; margin-right: auto; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: var(--space-4); }