/* ========== CSS Variables & Reset ========== */
:root {
  --bg-primary: #f0fdf4;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f0fdf8;
  --bg-header: rgba(255,255,255,0.88);
  --bg-banner: linear-gradient(135deg, #00c853 0%, #00bfa5 50%, #1de9b6 100%);
  --text-primary: #0d1b12;
  --text-secondary: #37474f;
  --text-muted: #78909c;
  --border-color: #c8e6c9;
  --accent: #00c853;
  --accent-light: #00e676;
  --accent-bg: rgba(0,200,83,0.1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,200,83,0.12);
  --shadow-lg: 0 10px 30px rgba(0,200,83,0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --hot-1: #ff1744;
  --hot-2: #ff5252;
  --hot-3: #ff9100;
}

[data-theme="dark"] {
  --bg-primary: #0a1f13;
  --bg-secondary: #122a1c;
  --bg-card: #122a1c;
  --bg-card-hover: #1a3d28;
  --bg-header: rgba(10,31,19,0.92);
  --bg-banner: linear-gradient(135deg, #00c853 0%, #00bfa5 50%, #00e5ff 100%);
  --text-primary: #e8f5e9;
  --text-secondary: #a5d6a7;
  --text-muted: #66bb6a;
  --border-color: #1b5e20;
  --accent: #00e676;
  --accent-light: #69f0ae;
  --accent-bg: rgba(0,230,118,0.15);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,200,83,0.2);
  --shadow-lg: 0 10px 30px rgba(0,200,83,0.25);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

/* ========== Header ========== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-header);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.header-left::-webkit-scrollbar { display: none; }

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  user-select: none;
  flex-shrink: 0;
}

.logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 20px;
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--accent);
  background: var(--accent-bg);
}

.nav-link.active {
  color: var(--accent);
  background: var(--accent-bg);
  font-weight: 600;
}

#navAiBtn {
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.update-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.update-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00e676;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.btn-icon {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  border: 1px solid var(--border-color);
}

.btn-icon:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: scale(1.05);
}

.btn-icon:active {
  transform: scale(0.95);
}

[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }
:root .icon-sun { display: block; }
:root .icon-moon { display: none; }
body:not([data-theme="dark"]) .icon-moon { display: none; }

/* ========== Banner ========== */
.info-banner {
  background: var(--bg-banner);
  margin: 20px 24px 0;
  border-radius: var(--radius);
  padding: 28px 32px;
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.info-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}

.info-banner::after {
  content: '';
  position: absolute;
  bottom: -60%;
  left: -10%;
  width: 250px;
  height: 250px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}

.banner-content {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.date-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.banner-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.date-text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.time-text {
  font-size: 14px;
  opacity: 0.85;
}

.banner-right-area {
  display: flex;
  align-items: center;
  gap: 20px;
}

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

.banner-btn {
  background: rgba(255,255,255,0.2) !important;
  color: #fff !important;
  border: 1px solid rgba(255,255,255,0.2) !important;
}

.banner-btn:hover {
  background: rgba(255,255,255,0.3) !important;
}

.banner-stats {
  display: flex;
  gap: 40px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stat-number {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 12px;
  opacity: 0.8;
  font-weight: 500;
}

/* ========== Search ========== */
.search-section {
  padding: 20px 24px 0;
}

.search-box {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 12px 40px 12px 48px;
  border: 2px solid var(--border-color);
  border-radius: 14px;
  font-size: 15px;
  background: var(--bg-card);
  color: var(--text-primary);
  transition: all var(--transition);
  outline: none;
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-bg);
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  display: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.search-clear:hover {
  background: var(--accent-bg);
  color: var(--accent);
}

.search-clear.visible {
  display: flex;
}

/* ========== Main Grid ========== */
.main-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  padding: 20px 24px;
  max-width: 1600px;
  margin: 0 auto;
}

/* ========== Platform Card ========== */
.platform-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

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

.card-header {
  padding: 16px 20px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.card-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 1px;
}

.card-badge {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
  white-space: nowrap;
}

.card-list {
  list-style: none;
  padding: 8px 0;
}

.card-item {
  display: flex;
  align-items: center;
  padding: 9px 20px;
  gap: 12px;
  cursor: pointer;
  transition: background var(--transition);
  text-decoration: none;
  color: inherit;
}

.card-item:hover {
  background: var(--bg-card-hover);
}

.item-rank {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  color: var(--text-muted);
  background: transparent;
}

.item-rank.top-1 {
  background: var(--hot-1);
  color: #fff;
}

.item-rank.top-2 {
  background: var(--hot-2);
  color: #fff;
}

.item-rank.top-3 {
  background: var(--hot-3);
  color: #fff;
}

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

.item-title {
  font-size: 14px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.5;
}

.item-hot {
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.item-tag {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
  flex-shrink: 0;
}

.tag-hot { background: #fee2e2; color: #dc2626; }
.tag-new { background: #dbeafe; color: #2563eb; }
.tag-recommend { background: #fef3c7; color: #d97706; }
.tag-film { background: #ede9fe; color: #7c3aed; }
.tag-music { background: #d1fae5; color: #059669; }

[data-theme="dark"] .tag-hot { background: rgba(220,38,38,0.2); }
[data-theme="dark"] .tag-new { background: rgba(37,99,235,0.2); }
[data-theme="dark"] .tag-recommend { background: rgba(217,119,6,0.2); }
[data-theme="dark"] .tag-film { background: rgba(124,58,237,0.2); }
[data-theme="dark"] .tag-music { background: rgba(5,150,105,0.2); }

/* ========== Card Skeleton Loading ========== */
.skeleton-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.skeleton-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border-color);
}

.skeleton-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--border-color);
  animation: shimmer 1.5s infinite;
}

.skeleton-text {
  height: 14px;
  border-radius: 4px;
  background: var(--border-color);
  animation: shimmer 1.5s infinite;
}

.skeleton-text.w-24 { width: 96px; }
.skeleton-text.w-16 { width: 64px; }

.skeleton-list {
  padding: 12px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skeleton-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.skeleton-rank {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--border-color);
  animation: shimmer 1.5s infinite;
}

.skeleton-line {
  flex: 1;
  height: 12px;
  border-radius: 4px;
  background: var(--border-color);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { opacity: 1; }
  50% { opacity: 0.4; }
  100% { opacity: 1; }
}

/* ========== Back to Top ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 50;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ========== Footer ========== */
.footer {
  text-align: center;
  padding: 30px 24px 40px;
  color: var(--text-muted);
  font-size: 14px;
}

.footer-sub {
  font-size: 12px;
  margin-top: 6px;
  opacity: 0.7;
}

/* ========== Refresh Animation ========== */
.refreshing svg {
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== Card Enter Animation ========== */
.platform-card {
  animation: cardEnter 0.4s ease-out both;
}

@keyframes cardEnter {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ========== Empty State ========== */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
}

.empty-state svg {
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 14px;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .header {
    padding: 0 12px;
    height: 50px;
  }

  .header-left {
    gap: 10px;
  }

  .logo-img {
    height: 28px;
  }

  .nav-links {
    display: flex;
    gap: 2px;
  }

  .nav-link {
    font-size: 12px;
    padding: 4px 8px;
  }

  .header-right {
    display: none;
  }

  .update-info .update-dot { display: none; }
  .update-info #updateTime { display: none; }

  .btn-icon {
    width: 30px;
    height: 30px;
    border-radius: 8px;
  }

  .btn-icon svg {
    width: 15px;
    height: 15px;
  }

  .banner-right-area {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }

  .info-banner {
    margin: 12px 16px 0;
    padding: 20px;
  }

  .banner-content {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }

  .banner-stats {
    gap: 24px;
  }

  .stat-number {
    font-size: 22px;
  }

  .search-section {
    padding: 16px 16px 0;
  }

  .main-grid {
    grid-template-columns: 1fr;
    padding: 16px;
    gap: 16px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  .logo-text {
    font-size: 16px;
  }

  .date-text {
    font-size: 18px;
  }

  .update-info {
    display: none;
  }
}

/* ========== Mobile Nav Menu ========== */
@media (max-width: 768px) {
  .header-left {
    gap: 0;
  }

  .header {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 16px;
  }

  .nav-links {
    display: flex;
    width: 100%;
    overflow-x: auto;
    padding-top: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-link {
    font-size: 13px;
    padding: 5px 12px;
  }
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ========== AI Chat Fab Button ========== */
.ai-fab {
  position: fixed;
  bottom: 30px;
  left: 30px;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  border: none;
  background: linear-gradient(135deg, var(--accent) 0%, #00bfa5 100%);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  box-shadow: 0 4px 16px rgba(0,200,83,0.4);
  transition: all var(--transition);
  z-index: 200;
  overflow: hidden;
}

.ai-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(0,200,83,0.5);
}

.ai-fab:active {
  transform: scale(0.95);
}

.ai-fab-label {
  position: absolute;
  font-size: 10px;
  font-weight: 800;
  bottom: 6px;
  letter-spacing: 0.5px;
}

.ai-fab svg {
  margin-top: -4px;
}

/* ========== AI Chat Panel ========== */
.ai-chat-panel {
  position: fixed;
  bottom: 94px;
  left: 30px;
  width: 420px;
  height: 560px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
  z-index: 201;
  display: none;
  flex-direction: column;
  overflow: hidden;
  animation: aiPanelIn 0.3s ease-out;
}

.ai-chat-panel.open {
  display: flex;
}

@keyframes aiPanelIn {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* -- Header -- */
.ai-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.ai-chat-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.ai-chat-title svg {
  color: var(--accent);
}

.ai-chat-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.ai-model-select {
  padding: 5px 10px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 12px;
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  outline: none;
  max-width: 140px;
  transition: border-color var(--transition);
}

.ai-model-select:focus {
  border-color: var(--accent);
}

.ai-btn-icon {
  width: 30px;
  height: 30px;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all var(--transition);
}

.ai-btn-icon:hover {
  background: var(--accent-bg);
  color: var(--accent);
}

/* -- Messages -- */
.ai-chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ai-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--text-muted);
  gap: 8px;
}

.ai-welcome-icon {
  font-size: 48px;
  margin-bottom: 4px;
}

.ai-welcome h3 {
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 600;
}

.ai-welcome p {
  font-size: 13px;
}

/* Message bubbles */
.ai-msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.6;
  word-break: break-word;
  white-space: pre-wrap;
}

.ai-msg-user {
  align-self: flex-end;
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.ai-msg-bot {
  align-self: flex-start;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-bottom-left-radius: 4px;
}

.ai-msg-error {
  align-self: flex-start;
  background: #fee2e2;
  color: #dc2626;
  border-radius: 14px;
  border-bottom-left-radius: 4px;
  font-size: 13px;
}

[data-theme="dark"] .ai-msg-error {
  background: rgba(220,38,38,0.15);
}

.ai-msg-label {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.ai-msg-user .ai-msg-label {
  color: rgba(255,255,255,0.7);
  text-align: right;
}

/* Typing indicator */
.ai-typing {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  align-self: flex-start;
}

.ai-typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: typingBounce 1.4s infinite;
}

.ai-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.ai-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* -- Input Area -- */
.ai-chat-input-area {
  padding: 12px 16px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.ai-input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: 14px;
  padding: 8px 8px 8px 14px;
  transition: border-color var(--transition);
}

.ai-input-wrapper:focus-within {
  border-color: var(--accent);
}

.ai-input {
  flex: 1;
  border: none;
  outline: none;
  background: none;
  font-size: 14px;
  color: var(--text-primary);
  resize: none;
  max-height: 100px;
  line-height: 1.5;
  font-family: inherit;
}

.ai-input::placeholder {
  color: var(--text-muted);
}

.ai-send-btn {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
}

.ai-send-btn:hover:not(:disabled) {
  background: var(--accent-light);
  transform: scale(1.05);
}

.ai-send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* -- Responsive -- */
@media (max-width: 768px) {
  .ai-chat-panel {
    left: 8px;
    right: 8px;
    bottom: 88px;
    width: auto;
    height: 70vh;
    border-radius: 16px;
  }

  .ai-fab {
    bottom: 20px;
    left: 20px;
    width: 48px;
    height: 48px;
    border-radius: 14px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
  }
}