/* =====================================================
   components.css - Reusable UI Components
   ===================================================== */

/* ---- Site Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition-base);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-logo img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

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

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

.header-nav a {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--color-primary);
  background: var(--color-secondary);
}

[data-theme="dark"] .header-nav a:hover,
[data-theme="dark"] .header-nav a.active {
  background: var(--color-surface-hover);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Language Switcher */
.lang-switch {
  display: flex;
  align-items: center;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-full);
  padding: 2px;
  border: 1px solid var(--color-border);
}

.lang-switch button {
  padding: 4px 10px;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-switch button.active {
  background: var(--color-primary);
  color: white;
}

/* Theme Toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all var(--transition-fast);
  border: 1px solid var(--color-border);
}

.theme-toggle:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: var(--z-overlay);
  padding: var(--space-lg);
  animation: slideDown 0.3s ease;
}

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

.mobile-nav a {
  display: block;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
}

.mobile-nav a:hover {
  background: var(--color-secondary);
}

@media (max-width: 900px) {
  .header-nav { display: none; }
  .mobile-menu-btn { display: flex; }
}

/* ---- Site Footer ---- */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-light);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col li {
  margin-bottom: var(--space-sm);
}

.footer-col a {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xl);
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-ja);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary-gradient);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-primary-glow);
  color: white;
}

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

.btn-secondary:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

[data-theme="dark"] .btn-secondary {
  background: rgba(145, 71, 254, 0.15);
}

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

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

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--text-lg);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
}

/* ---- Cards ---- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  border: 1px solid var(--color-border-light);
}

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

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

.card-gradient {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-surface) 100%);
}

[data-theme="dark"] .card-gradient {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-bg-secondary) 100%);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-primary-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: 1.6;
}

/* ---- Hero Section ---- */
.hero {
  position: relative;
  background: var(--color-primary-gradient);
  color: white;
  padding: var(--space-4xl) 0;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(0,217,255,0.08) 0%, transparent 40%);
  pointer-events: none;
}

.hero h1 {
  color: white;
  margin-bottom: var(--space-md);
  font-size: var(--text-4xl);
}

.hero p {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--text-xl);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.hero .btn-primary {
  background: white;
  color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.hero .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  color: var(--color-primary-dark);
}

/* Page Hero (smaller) */
.page-hero {
  background: var(--color-primary-gradient);
  color: white;
  padding: var(--space-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.page-hero h1 {
  color: white;
  font-size: var(--text-3xl);
  margin-bottom: var(--space-sm);
}

.page-hero p {
  color: rgba(255,255,255,0.8);
  font-size: var(--text-lg);
}

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-primary {
  background: var(--color-secondary);
  color: var(--color-primary);
}

.badge-success {
  background: #f0fff4;
  color: var(--color-success);
}

.badge-warning {
  background: #fffaf0;
  color: var(--color-warning);
}

.badge-error {
  background: #fff5f5;
  color: var(--color-error);
}

[data-theme="dark"] .badge-primary { background: rgba(145,71,254,0.2); }
[data-theme="dark"] .badge-success { background: rgba(72,187,120,0.2); }
[data-theme="dark"] .badge-warning { background: rgba(246,173,85,0.2); }
[data-theme="dark"] .badge-error { background: rgba(245,101,101,0.2); }

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: var(--space-xs);
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-btn {
  padding: var(--space-sm) var(--space-lg);
  border: none;
  background: none;
  font-family: var(--font-ja);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

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

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ---- Accordion ---- */
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  cursor: pointer;
  font-weight: 600;
  transition: background var(--transition-fast);
}

.accordion-header:hover {
  background: var(--color-surface-hover);
}

.accordion-icon {
  transition: transform var(--transition-base);
  font-size: 14px;
}

.accordion-item.open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.accordion-item.open .accordion-body {
  max-height: 2000px;
}

.accordion-content {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

/* ---- Code Block ---- */
.code-block {
  position: relative;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: var(--space-md) 0;
  overflow: hidden;
}

[data-theme="dark"] .code-block {
  background: #1a1a2e;
}

.code-block pre {
  padding: var(--space-lg);
  overflow-x: auto;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.code-block code {
  font-family: var(--font-mono);
}

.copy-btn {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  padding: 4px 12px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.code-block:hover .copy-btn {
  opacity: 1;
}

.copy-btn.copied {
  background: var(--color-success);
}

/* ---- Alert / Notice Boxes ---- */
.notice {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin: var(--space-md) 0;
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.notice-icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.notice-info {
  background: #ebf8ff;
  border-left: 4px solid var(--color-info);
  color: #2b6cb0;
}

.notice-warning {
  background: #fffaf0;
  border-left: 4px solid var(--color-warning);
  color: #c05621;
}

.notice-error {
  background: #fff5f5;
  border-left: 4px solid var(--color-error);
  color: #c53030;
}

.notice-success {
  background: #f0fff4;
  border-left: 4px solid var(--color-success);
  color: #276749;
}

.notice-tip {
  background: var(--color-secondary);
  border-left: 4px solid var(--color-primary);
  color: var(--color-primary-dark);
}

[data-theme="dark"] .notice-info { background: rgba(66,153,225,0.1); color: #90cdf4; }
[data-theme="dark"] .notice-warning { background: rgba(246,173,85,0.1); color: #fbd38d; }
[data-theme="dark"] .notice-error { background: rgba(245,101,101,0.1); color: #feb2b2; }
[data-theme="dark"] .notice-success { background: rgba(72,187,120,0.1); color: #9ae6b4; }
[data-theme="dark"] .notice-tip { background: rgba(145,71,254,0.1); color: var(--color-primary-light); }

/* Dark mode: buttons inside notices need higher contrast */
[data-theme="dark"] .notice .btn-primary {
  background: white;
  color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
[data-theme="dark"] .notice .btn-primary:hover {
  background: #f0f0f0;
  color: var(--color-primary-dark);
}

/* ---- Steps ---- */
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.step-item {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  position: relative;
}

.step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 19px;
  top: 56px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.step-number {
  counter-increment: step;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.step-number::before {
  content: counter(step);
}

.step-body {
  flex: 1;
}

.step-body h4 {
  margin-bottom: var(--space-sm);
}

.step-body p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.step-body img {
  margin-top: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

/* ---- Video Embed ---- */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  margin: var(--space-lg) 0;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ---- Tooltip ---- */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 10px;
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
}

/* ---- Form Elements ---- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.form-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-ja);
  font-size: var(--text-base);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 560px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-bg-secondary);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 18px;
}

.modal-close:hover {
  background: var(--color-error);
  color: white;
}

/* ---- Breadcrumb ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

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

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

.breadcrumb-separator::after {
  content: '/';
  margin: 0 var(--space-xs);
  color: var(--color-text-muted);
}

/* ---- Filter Bar ---- */
.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  padding: var(--space-md) 0;
}

.filter-group {
  display: flex;
  gap: var(--space-xs);
}

.filter-btn {
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-ja);
  color: var(--color-text-secondary);
}

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

/* ---- Stats ---- */
.stats-row {
  display: flex;
  gap: var(--space-xl);
  justify-content: center;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ---- Tip Card (for Tips page) ---- */
.tip-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.tip-card:hover {
  transform: translateY(-2px);
}

.tip-card-header {
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  cursor: pointer;
}

.tip-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.tip-card-icon.blue { background: #ebf8ff; color: #3182ce; }
.tip-card-icon.purple { background: var(--color-secondary); color: var(--color-primary); }
.tip-card-icon.orange { background: #fffaf0; color: #dd6b20; }
.tip-card-icon.red { background: #fff5f5; color: #e53e3e; }
.tip-card-icon.green { background: #f0fff4; color: #38a169; }

[data-theme="dark"] .tip-card-icon.blue { background: rgba(49,130,206,0.15); }
[data-theme="dark"] .tip-card-icon.purple { background: rgba(145,71,254,0.15); }
[data-theme="dark"] .tip-card-icon.orange { background: rgba(221,107,32,0.15); }
[data-theme="dark"] .tip-card-icon.red { background: rgba(229,62,62,0.15); }
[data-theme="dark"] .tip-card-icon.green { background: rgba(56,161,105,0.15); }

.tip-card-title {
  font-size: var(--text-lg);
  font-weight: 700;
}

.tip-card-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.tip-card-body {
  padding: 0 var(--space-lg) var(--space-lg);
}

/* ---- Channel Card (for Showcase) ---- */
.channel-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  cursor: pointer;
}

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

.channel-card-thumb {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.channel-card-body {
  padding: var(--space-md);
}

.channel-card-name {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.channel-card-group {
  font-size: var(--text-xs);
  margin-bottom: var(--space-sm);
}

.channel-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.channel-card-subs {
  display: flex;
  align-items: center;
  gap: 4px;
}

.channel-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-primary);
  font-weight: 600;
}

.channel-card-link:hover {
  text-decoration: underline;
}

.channel-card-platform {
  width: 16px;
  height: 16px;
}

/* ---- Profile Card ---- */
.profile-card {
  display: flex;
  gap: var(--space-xl);
  align-items: flex-start;
  padding: var(--space-xl);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.profile-card img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-primary);
}

.profile-card-info h3 {
  margin-bottom: var(--space-sm);
}

.profile-card-info p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.profile-links {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.profile-links a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-primary);
}

@media (max-width: 640px) {
  .profile-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .profile-links { justify-content: center; }
}

/* ---- Highlight Box ---- */
.highlight-box {
  background: var(--color-secondary);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  font-weight: 500;
}

[data-theme="dark"] .highlight-box {
  background: rgba(145, 71, 254, 0.1);
}

.highlight-box strong {
  color: var(--color-primary);
}

/* ---- Loading Spinner ---- */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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