/* ============================================
   Epstein Studio - Modern Light Theme
   Clean, accessible, professional UI/UX
   ============================================ */

:root {
  /* Primary Colors */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #dbeafe;
  --primary-bg: #eff6ff;
  
  /* Accent Colors */
  --accent: #10b981;
  --accent-hover: #059669;
  --accent-light: #d1fae5;
  
  /* Background Colors */
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-muted: #f1f5f9;
  --bg-dark: #e2e8f0;
  
  /* Surface Colors */
  --surface: #ffffff;
  --surface-hover: #f8fafc;
  --surface-border: #e2e8f0;
  --surface-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
  
  /* Text Colors */
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  /* Status Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px 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 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;
}

/* ============================================
   Base Styles
   ============================================ */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--bg-soft);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.hidden {
  display: none !important;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 0.5s ease-out forwards;
}

.animate-scale-in {
  animation: scaleIn 0.3s ease-out forwards;
}

/* Stagger animation delays */
.animate-delay-1 { animation-delay: 0.1s; opacity: 0; }
.animate-delay-2 { animation-delay: 0.2s; opacity: 0; }
.animate-delay-3 { animation-delay: 0.3s; opacity: 0; }
.animate-delay-4 { animation-delay: 0.4s; opacity: 0; }

p {
  margin: 0;
  line-height: 1.7;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* ============================================
   Layout
   ============================================ */

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

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  flex: 1;
  padding: 24px;
  max-width: 100%;
  overflow: hidden;
  height: calc(100vh - 80px);
}

.browse-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
  flex: 1;
  padding: 24px;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.start-page,
.about-page {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 48px 24px 80px;
  overflow-y: auto;
}

.start-content,
.about-content {
  max-width: 900px;
  width: 100%;
}

/* ============================================
   Top Navigation Bar
   ============================================ */

.topbar {
  background: var(--bg);
  border-bottom: 1px solid var(--surface-border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1600px;
  margin: 0 auto;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.construction-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-muted);
  padding: 6px 12px;
  border-radius: var(--radius-full);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  background: var(--primary);
  color: white;
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-secondary:hover {
  background: var(--bg-muted);
  color: var(--text);
}

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

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

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

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

.btn-outline-danger:hover {
  background: #fef2f2;
  color: var(--error);
}

/* ============================================
   Forms & Inputs
   ============================================ */

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field > span {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.875rem;
  font-family: inherit;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  background: var(--bg);
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

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

.field input[type="range"] {
  padding: 0;
  border: none;
  background: transparent;
  accent-color: var(--primary);
}

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

select {
  cursor: pointer;
}

/* ============================================
   Cards & Panels
   ============================================ */

.panel {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  height: 100%;
  overflow: hidden;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 16px;
  transition: box-shadow 0.15s, border-color 0.15s;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

/* ============================================
   Account Menu
   ============================================ */

.account-menu {
  position: relative;
}

.account-menu summary {
  list-style: none;
}

.account-menu summary::-webkit-details-marker {
  display: none;
}

.account-button {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 1px solid var(--surface-border);
  background: var(--bg);
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--text-secondary);
  position: relative;
  transition: border-color 0.15s, background 0.15s;
}

.account-button:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

.account-button svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.account-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  min-width: 180px;
  padding: 8px;
  box-shadow: var(--shadow-lg);
  display: none;
  z-index: 50;
}

.account-menu[open] .account-dropdown {
  display: block;
}

.account-username {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 8px 12px;
  border-bottom: 1px solid var(--surface-border);
  margin-bottom: 4px;
}

.account-link {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--text);
  text-decoration: none;
  font-size: 0.875rem;
  transition: background 0.15s;
}

.account-link:hover {
  background: var(--bg-muted);
  color: var(--text);
}

.notif-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--error);
  display: inline-block;
  margin-left: 8px;
}

.account-button .notif-dot {
  position: absolute;
  top: 4px;
  right: 4px;
  margin: 0;
  border: 2px solid var(--bg);
}

/* ============================================
   Start Page (Landing)
   ============================================ */

.start-page {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 0;
  overflow-y: auto;
}

.start-content {
  max-width: 1200px;
  width: 100%;
}

.start-hero {
  text-align: center;
  padding: 80px 24px 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  background-size: 200% 200%;
  animation: gradient-shift 8s ease infinite;
  color: white;
  position: relative;
  overflow: hidden;
}

.start-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='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.start-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  color: white;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  position: relative;
  z-index: 1;
}

.start-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.start-hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.start-hero-actions .btn {
  padding: 16px 32px;
  font-size: 1.0625rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
}

.start-hero-actions .btn:first-child {
  background: white;
  color: #764ba2;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.start-hero-actions .btn:first-child:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.start-hero-actions .btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.start-hero-actions .btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: white;
  color: white;
}

/* Features Section */
.start-features {
  padding: 80px 24px;
  background: var(--bg);
}

.start-features-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.start-features-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--primary);
  text-align: center;
  margin-bottom: 12px;
}

.start-features-heading {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  margin-bottom: 48px;
}

.start-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  text-align: center;
  transition: all 0.25s ease;
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--primary);
  stroke-width: 2;
  fill: none;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Stats Section */
.start-stats-section {
  padding: 60px 24px;
  background: var(--bg-soft);
}

.start-stats-inner {
  max-width: 900px;
  margin: 0 auto;
}

.start-section {
  margin-top: 0;
  padding: 60px 24px;
}

.start-heading {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 20px;
}

.start-progress-wrap {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.start-progress-bar {
  width: 100%;
  height: 12px;
  background: var(--bg-muted);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 12px;
}

.start-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4); }
  50% { box-shadow: 0 0 12px 2px rgba(37, 99, 235, 0.3); }
}

.start-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.start-progress-pct {
  font-weight: 600;
  color: var(--primary);
}

.start-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.start-stat {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: 28px 24px;
  text-align: center;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.start-stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.start-stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.start-stat:hover::before {
  opacity: 1;
}

.start-stat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: var(--primary-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.start-stat-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--primary);
  stroke-width: 2;
  fill: none;
}

.start-stat:nth-child(2) .start-stat-icon {
  background: var(--accent-light);
}

.start-stat:nth-child(2) .start-stat-icon svg {
  stroke: var(--accent);
}

.start-stat:nth-child(3) .start-stat-icon {
  background: #fef3c7;
}

.start-stat:nth-child(3) .start-stat-icon svg {
  stroke: #d97706;
}

.start-stat:nth-child(4) .start-stat-icon {
  background: #fce7f3;
}

.start-stat:nth-child(4) .start-stat-icon svg {
  stroke: #db2777;
}

.start-stat-value {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  margin-bottom: 6px;
}

.start-stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.start-lists {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

@media (max-width: 900px) {
  .start-lists {
    grid-template-columns: 1fr;
  }
}

.start-list-col {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.start-list-col::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.start-list-col:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.start-list-col:hover::before {
  opacity: 1;
}

.start-list-col .start-heading {
  margin-bottom: 0;
  font-size: 0.9375rem;
}

.start-ranked-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  counter-reset: rank;
}

.start-ranked-list li {
  counter-increment: rank;
}

.start-ranked-list li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text);
  background: var(--bg-soft);
  transition: background 0.15s, transform 0.15s;
}

.start-ranked-list li a:hover {
  background: var(--primary-light);
  transform: translateX(4px);
}

.start-ranked-list li a::before {
  content: counter(rank);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary);
  min-width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: var(--radius-full);
}

.start-ranked-name {
  font-size: 0.875rem;
  font-weight: 500;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.start-ranked-stat {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.start-empty {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 32px 20px;
  text-align: center;
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--surface-border);
}

.start-empty-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
  background: var(--bg-muted);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.start-empty-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--text-light);
  stroke-width: 2;
  fill: none;
}

.start-empty-text {
  margin-bottom: 16px;
}

.start-empty-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
}

.start-empty-cta:hover {
  text-decoration: underline;
}

/* Trending Section */
.start-trending {
  background: var(--bg);
  padding: 80px 24px;
}

.start-trending-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.start-section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  margin-bottom: 8px;
}

.start-section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 40px;
}

.start-list-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--surface-border);
}

.start-list-header-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.start-list-header-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--primary);
}

.start-list-col:nth-child(2) .start-list-header-icon {
  background: var(--accent-light);
}

.start-list-col:nth-child(2) .start-list-header-icon svg {
  stroke: var(--accent);
}

.start-list-col:nth-child(3) .start-list-header-icon {
  background: #fef3c7;
}

.start-list-col:nth-child(3) .start-list-header-icon svg {
  stroke: #d97706;
}

.start-list-header svg {
  flex-shrink: 0;
}

.start-list-header .start-heading {
  margin-bottom: 0;
}

/* CTA Section */
.start-cta {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 80px 24px;
  text-align: center;
}

.start-cta-inner {
  max-width: 600px;
  margin: 0 auto;
}

.start-cta-title {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.start-cta-text {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  line-height: 1.6;
}

.start-cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.start-cta-actions .btn {
  padding: 16px 32px;
  font-size: 1rem;
  font-weight: 600;
}

.start-cta-actions .btn:first-child {
  background: white;
  color: #764ba2;
}

.start-cta-actions .btn:first-child:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.start-cta-actions .btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.start-cta-actions .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-lg {
  padding: 16px 32px !important;
  font-size: 1rem !important;
}

/* ============================================
   Browse Page
   ============================================ */

.browse-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.browse-hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 48px 24px 40px;
  text-align: center;
}

.browse-hero-title {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
}

.browse-hero-subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

.browse-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 24px;
  gap: 20px;
  overflow: hidden;
}

.browse-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.browse-header .file-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
}

.browse-header-stats {
  display: flex;
  align-items: center;
  gap: 12px;
}

.browse-count {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  font-weight: 500;
  background: var(--bg-muted);
  padding: 8px 16px;
  border-radius: var(--radius-full);
}

.browse-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.search-wrap {
  display: flex;
  gap: 8px;
  align-items: center;
  position: relative;
}

.search-wrap .search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-wrap input {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 10px 14px 10px 40px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  min-width: 260px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

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

.browse-search-btn {
  padding: 10px 16px;
}

.browse-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  flex: 1;
  overflow-y: auto;
  max-height: calc(100vh - 280px);
}

.browse-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--surface-border);
  background: var(--bg);
  color: var(--text);
  text-decoration: none;
  transition: all 0.15s ease;
}

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

.browse-card span {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.browse-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.browse-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.browse-meta img {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

.browse-actions {
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

/* ============================================
   PDF Viewer / Workspace
   ============================================ */

.annotation-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
}

.annotation-panel .hint {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: left;
  padding: 12px;
  background: var(--bg-muted);
  border-radius: var(--radius-md);
}

.annotation-actions {
  display: flex;
  gap: 10px;
}

.annotation-actions .btn {
  flex: 1;
}

.annotation-section-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.annotation-section-title {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.annotation-sort select {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
}

.annotation-notes {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  overflow-y: auto;
  padding-right: 4px;
}

.annotation-note {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.annotation-note:hover,
.annotation-note.hovered {
  background: var(--primary-light);
  border-color: var(--primary);
}

.annotation-note-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.annotation-note-meta.by-you,
.comment-meta.by-you {
  color: var(--primary);
}

.annotation-note-text {
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.5;
}

.annotation-note-text.empty {
  color: var(--text-muted);
  font-style: italic;
}

.annotation-note-label {
  position: absolute;
  top: 10px;
  right: 12px;
  font-size: 0.625rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}

.annotation-status {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  padding: 16px;
}

/* Annotation Controls */
.annotation-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
  overflow: hidden;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  background: var(--bg-muted);
  padding: 4px;
  border-radius: var(--radius-md);
}

.tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.tab:hover {
  background: var(--bg);
  color: var(--text);
}

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

.tab-panel {
  display: none;
  flex-direction: column;
  gap: 16px;
  flex: 1;
  overflow: hidden;
}

.tab-panel.active {
  display: flex;
}

/* Annotation View */
.annotation-view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.annotation-view-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.annotation-view-note {
  background: var(--bg-soft);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 14px;
  font-size: 0.875rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.annotation-view-note.empty {
  color: var(--text-muted);
  font-style: italic;
  background: transparent;
  border: none;
  padding: 0;
}

.annotation-view-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
}

.annotation-view-votes {
  display: flex;
  align-items: center;
  gap: 6px;
}

.copy-link-btn {
  background: transparent;
  border: none;
  padding: 6px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.15s;
}

.copy-link-btn:hover {
  background: var(--bg-muted);
}

.copy-link-btn img {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}

/* Discussion Panel */
.discussion-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  overflow: hidden;
}

.discussion-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  overflow: hidden;
}

.discussion-title {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.discussion-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  overflow-y: auto;
}

.comment {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 12px;
}

.comment.reply-highlight {
  border-color: var(--primary);
  background: var(--primary-light);
}

.comment-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.comment-body {
  font-size: 0.8125rem;
  color: var(--text);
  line-height: 1.5;
}

.comment-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 8px;
}

.comment-reply,
.comment-delete {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.comment-reply:hover,
.comment-delete:hover {
  color: var(--primary);
}

.comment-indent {
  margin-left: 20px;
}

.discussion-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.discussion-form textarea {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 12px;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-family: inherit;
  resize: vertical;
  min-height: 80px;
}

.discussion-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

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

.discussion-actions {
  display: flex;
  gap: 10px;
  margin-top: auto;
}

/* PDF Comment Form */
.pdf-comment-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pdf-comment-form textarea {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 12px;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-family: inherit;
  resize: vertical;
  min-height: 80px;
}

.pdf-comment-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* ============================================
   Canvas / PDF Viewer Area
   ============================================ */

.canvas-wrap {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
  overflow: hidden;
}

.canvas-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.file-title-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.file-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  word-break: break-all;
  line-height: 1.3;
}

.pdf-vote-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pdf-vote-frame {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px 4px 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--surface-border);
  background: var(--bg);
}

.pdf-vote-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  border: 1px solid var(--surface-border);
  background: var(--bg);
  cursor: pointer;
  transition: all 0.15s ease;
}

.pdf-vote-btn:hover {
  background: var(--bg-muted);
}

.pdf-vote-btn.active {
  background: var(--accent-light);
  border-color: var(--accent);
}

.pdf-vote-btn.down.active {
  background: #fef2f2;
  border-color: var(--error);
}

.pdf-vote-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pdf-vote-btn img {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}

.pdf-vote-score {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 24px;
  text-align: center;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.canvas-body {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 16px;
  flex: 1;
  min-height: 0;
}

.canvas {
  background: var(--bg-muted);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

svg {
  width: 100%;
  height: 100%;
}

#heatmapCanvas {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

/* Minimap */
.minimap {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.minimap-title {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.minimap-scroll {
  flex: 1;
  overflow-y: auto;
  border-radius: var(--radius-md);
  background: var(--bg-muted);
}

#minimapSvg {
  width: 100%;
  height: auto;
  display: block;
}

#minimapViewport {
  fill: rgba(37, 99, 235, 0.1);
  stroke: var(--primary);
  stroke-width: 3;
}

.minimap-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.minimap-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.minimap-controls {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

#minimapPageInput {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
}

/* ============================================
   Voting
   ============================================ */

.vote-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
}

.vote-btn:hover {
  background: var(--bg-muted);
}

.vote-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.vote-btn.up.active {
  background: var(--accent-light);
  border-color: var(--accent);
}

.vote-btn.down.active {
  background: #fef2f2;
  border-color: var(--error);
}

.vote-icon {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}

.vote-btn.up.active .vote-icon {
  opacity: 1;
  filter: brightness(0) saturate(100%) invert(54%) sepia(82%) saturate(399%) hue-rotate(111deg) brightness(94%) contrast(91%);
}

.vote-btn.down.active .vote-icon {
  opacity: 1;
  filter: brightness(0) saturate(100%) invert(36%) sepia(95%) saturate(1808%) hue-rotate(340deg) brightness(91%) contrast(98%);
}

.vote-score {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 20px;
  text-align: center;
}

/* ============================================
   Overlays & Canvas Elements
   ============================================ */

.overlay-text {
  fill: var(--primary);
  font-weight: 600;
}

.text-box {
  fill: transparent;
  stroke: var(--primary);
  stroke-width: 1.5;
  stroke-dasharray: 4 2;
}

.resize-handle {
  fill: var(--primary);
  stroke: white;
  stroke-width: 2;
  cursor: nwse-resize;
}

.annotation-preview {
  fill: var(--primary);
  stroke: white;
  stroke-width: 2;
  pointer-events: none;
}

.annotation-anchor {
  fill: var(--primary);
  stroke: white;
  stroke-width: 2;
  cursor: pointer;
  fill-opacity: 0.7;
  transition: fill-opacity 0.15s;
}

.annotation-anchor.annotation-anchor-other {
  fill: var(--warning);
  stroke: white;
}

.annotation-anchor:hover,
.annotation-anchor[data-hovered="1"] {
  fill-opacity: 1;
}

.hover-circle {
  fill: none;
  stroke: var(--primary);
  stroke-width: 2;
  pointer-events: none;
}

.hint-arrow {
  stroke: var(--error);
  stroke-width: 3;
  fill: none;
}

.hint-hit {
  stroke: transparent;
  stroke-width: 18;
  fill: none;
  cursor: pointer;
}

.hint-handle {
  fill: var(--error);
  stroke: #ffffff;
  stroke-width: 2;
  cursor: pointer;
}

/* ============================================
   Context Menu
   ============================================ */

.context-menu {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 6px;
  display: none;
  flex-direction: column;
  gap: 4px;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  min-width: 120px;
}

.context-menu button {
  background: transparent;
  color: var(--text);
  border: none;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8125rem;
  text-align: left;
  transition: background 0.15s;
}

.context-menu button:hover {
  background: var(--bg-muted);
}

/* ============================================
   Confirm Dialog
   ============================================ */

.confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1200;
  backdrop-filter: blur(4px);
}

.confirm-dialog {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  min-width: 320px;
  max-width: 400px;
  box-shadow: var(--shadow-xl);
}

.confirm-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.confirm-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.confirm-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

/* ============================================
   Hints
   ============================================ */

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

/* ============================================
   About Page
   ============================================ */

.about-hero {
  text-align: center;
  padding: 40px 0 32px;
}

.about-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 16px;
}

.about-subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

.about-section {
  margin-top: 48px;
}

.about-heading {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 20px;
}

.about-body {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.about-step {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
}

.about-step-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.about-step-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.about-step-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.about-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.about-status-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.about-status-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.about-status-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.about-contrib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.about-contrib-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.about-contrib-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.feature-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-input,
.feature-textarea {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: inherit;
}

.feature-textarea {
  resize: vertical;
  min-height: 80px;
}

.feature-input:focus,
.feature-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.feature-form-footer {
  display: flex;
  align-items: center;
  gap: 14px;
}

.feature-status {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.feature-status a {
  color: var(--primary);
}

.feature-status-ok {
  color: var(--success);
}

.feature-status-err {
  color: var(--error);
}

/* ============================================
   Notifications
   ============================================ */

.notifications-layout {
  max-width: 700px;
  margin: 0 auto;
  padding: 24px;
}

.notifications-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.notification-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  text-decoration: none;
  color: inherit;
  transition: all 0.15s ease;
}

.notification-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.notification-card.unread {
  border-color: var(--primary);
  background: var(--primary-light);
}

.notification-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.notification-time {
  margin-left: auto;
}

.notification-body {
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.5;
}

/* ============================================
   Login / Register
   ============================================ */

.login-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.auth-layout {
  flex: 1;
  display: flex;
}

.auth-sidebar {
  width: 45%;
  max-width: 500px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
}

.auth-sidebar-content {
  max-width: 360px;
}

.auth-sidebar-title {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.auth-sidebar-text {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.6;
  margin-bottom: 32px;
}

.auth-sidebar-stats {
  display: flex;
  gap: 32px;
}

.auth-sidebar-stat {
  display: flex;
  flex-direction: column;
}

.auth-sidebar-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
}

.auth-sidebar-stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.7);
}

.auth-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  background: var(--bg-soft);
}

@media (max-width: 900px) {
  .auth-sidebar {
    display: none;
  }
}

.login-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  width: 100%;
  max-width: 420px;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.login-header p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin: 0;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.login-card .hint {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 24px;
}

.login-card .hint a {
  color: var(--primary);
}

.login-card form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-card .btn {
  margin-top: 8px;
}

.login-error {
  font-size: 0.875rem;
  color: var(--error);
  text-align: center;
  padding: 12px;
  background: #fef2f2;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.login-footer {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--surface-border);
  text-align: center;
}

.login-footer p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin: 0;
}

.login-footer a {
  color: var(--primary);
  font-weight: 500;
}

.login-privacy {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 24px;
  padding: 16px;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
}

.login-privacy svg {
  flex-shrink: 0;
  color: var(--text-muted);
  margin-top: 2px;
}

.login-privacy span {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================
   Toggle Buttons
   ============================================ */

.toggle-row {
  display: flex;
  gap: 8px;
}

.toggle-row .btn-secondary {
  flex: 1;
  font-size: 0.8125rem;
  padding: 8px 12px;
}

.size-row {
  display: grid;
  grid-template-columns: 1fr 80px;
  gap: 8px;
  align-items: center;
}

#sizeInput {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
}

#colorPicker {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

#colorSwatch {
  width: 48px;
  height: 36px;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--surface-border);
  background: var(--bg);
  border-radius: var(--radius-md);
  cursor: pointer;
}

#colorSwatch .swatch-letter {
  font-size: 1.125rem;
  font-weight: 700;
  font-family: "Times New Roman", serif;
  color: var(--primary);
  line-height: 1;
}

textarea#notesInput {
  background: var(--bg);
  border: 1px solid var(--surface-border);
  color: var(--text);
  padding: 12px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: inherit;
  min-height: 120px;
  resize: vertical;
}

/* ============================================
   Mobile Responsiveness
   ============================================ */

@media (max-width: 1024px) {
  .layout {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
  }
  
  .canvas-body {
    grid-template-columns: 1fr;
  }
  
  .minimap {
    min-height: 200px;
  }
  
  .browse-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .browse-header-actions {
    width: 100%;
    flex-wrap: wrap;
  }
  
  .search-wrap {
    flex: 1;
    min-width: 200px;
  }
  
  .search-wrap input {
    width: 100%;
    min-width: 0;
  }
}

@media (max-width: 640px) {
  .topbar-row {
    height: 64px;
  }
  
  .brand {
    font-size: 1.25rem;
  }
  
  .construction-hint {
    display: none;
  }
  
  .start-hero {
    padding: 32px 0 24px;
  }
  
  .start-hero-actions {
    flex-direction: column;
  }
  
  .start-hero-actions .btn {
    width: 100%;
  }
  
  .browse-list {
    grid-template-columns: 1fr;
    max-height: calc(100vh - 320px);
  }
  
  .panel {
    padding: 16px;
  }
  
  .canvas-wrap {
    padding: 16px;
  }
}

/* ============================================
   Utility Classes
   ============================================ */

.read-only .panel {
  opacity: 0.7;
}

.read-only .annotation-controls input,
.read-only .annotation-controls select,
.read-only .annotation-controls textarea,
.read-only .annotation-controls button {
  pointer-events: none;
  opacity: 0.5;
}

/* Coffee Link */
.coffee-link {
  position: fixed;
  right: 24px;
  bottom: 16px;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
  z-index: 5;
}

.coffee-link:hover {
  color: var(--primary);
}

/* Mobile Block Message */
.mobile-block-message {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  text-align: center;
  padding: 40px 24px;
}