/* ==================== クリーンデザインシステム（白ベース） ==================== */

:root {
  --primary: #FF6B35;
  --primary-dark: #E85D2C;
  --secondary: #00D9FF;
  --accent: #9D4EDD;
  --background: #FAFBFC;
  --surface: #ffffff;
  --surface-light: #F0F4F8;
  --text-primary: #1A202C;
  --text-secondary: #718096;
  --border: #E2E8F0;
  --shadow-sm: 0 2px 4px 0 rgba(255, 107, 53, 0.08);
  --shadow-md: 0 4px 8px -2px rgba(255, 107, 53, 0.12);
  --shadow-lg: 0 12px 24px -4px rgba(255, 107, 53, 0.15);
  --shadow-glow: 0 0 30px rgba(255, 107, 53, 0.25);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
  --gradient-accent: linear-gradient(135deg, #9D4EDD 0%, #00D9FF 100%);
  --gradient-vibrant: linear-gradient(135deg, #FF6B35 0%, #9D4EDD 50%, #00D9FF 100%);
}

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

html, body {
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#root {
  overflow-x: hidden;
  width: 100%;
}

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

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

h1 { font-size: 24px; }
h2 { font-size: 18px; margin-bottom: 12px; }
h3 { font-size: 16px; }
h4 { font-size: 14px; }
h5 { font-size: 13px; }
h6 { font-size: 12px; }

p {
  margin: 0;
  line-height: 1.6;
}

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

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  outline: none;
  text-decoration: none;
  white-space: nowrap;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #E85D2C 0%, #E08217 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
  background: linear-gradient(135deg, #00D9FF 0%, #0BC5EA 100%);
  color: white;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 217, 255, 0.3);
}

.btn-secondary:hover:not(:disabled) {
  background: linear-gradient(135deg, #0BC5EA 0%, #06B6D4 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 217, 255, 0.4);
}

.btn-sm {
  padding: 5px 8px;
  font-size: 11px;
  white-space: nowrap;
  flex-shrink: 0;
  gap: 4px;
}

@media (min-width: 640px) {
  .btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    gap: 6px;
  }
}

.btn-lg {
  padding: 10px 20px;
  font-size: 14px;
}

.btn-icon {
  padding: 8px;
  width: 36px;
  height: 36px;
}

/* ==================== Hero Section with Slideshow ==================== */

.hero-section {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(to bottom, #000 0%, #111827 100%);
  padding-bottom: 0;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .hero-section {
    min-height: 350px;
  }
}

.hero-slideshow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

.hero-slide::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.7) 100%);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.75) 0%, rgba(139, 92, 246, 0.75) 100%);
  z-index: 2;
}

.hero-gradient {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow: hidden;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="rgba(255,255,255,0.05)"/></svg>');
  opacity: 0.1;
}

/* ==================== Cards ==================== */

.card {
  background: var(--surface);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 107, 53, 0.3);
  transform: translateY(-3px);
}

/* ==================== Video Card with Flip ==================== */

.video-card {
  perspective: 1000px;
  cursor: pointer;
  height: 100%;
}

.video-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.video-card:hover .video-card-inner {
  /* transform: rotateY(180deg); */
}

.video-card-front,
.video-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface);
}

.video-card-back {
  transform: rotateY(180deg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.video-thumbnail {
  position: relative;
  width: 100%;
  height: 120px;
  overflow: hidden;
  background: #f3f4f6;
  border-radius: var(--radius-sm);
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.video-card:hover .video-thumbnail img {
  /* transform: scale(1.05); */
}

/* ==================== Duration Badge ==================== */

.duration-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.95) 0%, rgba(118, 75, 162, 0.95) 100%);
  color: white;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ==================== Category Badge ==================== */

.category-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 20px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.category-bouldering { background: #dbeafe; color: #1e40af; }
.category-competition { background: #fee2e2; color: #991b1b; }
.category-tutorial { background: #d1fae5; color: #065f46; }
.category-gym_review { background: #fef3c7; color: #92400e; }

/* ==================== Horizontal Scroll ==================== */

.carousel-container {
  position: relative;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: white;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: var(--transition);
}

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

.carousel-btn-left {
  left: -20px;
}

.carousel-btn-right {
  right: -20px;
}

.horizontal-scroll {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--background);
  gap: 10px;
  padding: 6px 0;
  margin: 0;
}

.horizontal-scroll::-webkit-scrollbar {
  height: 8px;
}

.horizontal-scroll::-webkit-scrollbar-track {
  background: var(--background);
  border-radius: 10px;
}

.horizontal-scroll::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 10px;
}

.horizontal-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

.scroll-item {
  flex: 0 0 150px;
  scroll-snap-align: start;
}

/* Wide scroll items - now same as regular for consistency */
.scroll-item-wide {
  flex: 0 0 150px;
  scroll-snap-align: start;
}

@media (max-width: 768px) {
  .scroll-item {
    flex: 0 0 140px;
  }
  
  .scroll-item-wide {
    flex: 0 0 140px;
  }
  
  .carousel-btn {
    display: none;
  }
}

/* ==================== Modal ==================== */

.modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
  animation: fadeIn 0.2s;
  backdrop-filter: blur(4px);
}

.modal.active {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal-content {
  background-color: var(--surface);
  padding: 24px;
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideIn 0.3s;
  box-shadow: var(--shadow-lg);
}

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

@keyframes slideIn {
  from { 
    transform: translateY(-30px); 
    opacity: 0; 
  }
  to { 
    transform: translateY(0); 
    opacity: 1; 
  }
}

/* ==================== Mobile Menu ==================== */

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 280px;
  height: 100vh;
  background: var(--surface);
  box-shadow: -2px 0 10px rgba(0,0,0,0.1);
  transition: right 0.3s ease;
  z-index: 9998;
  padding: 20px;
  overflow-y: auto;
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 9997;
  backdrop-filter: blur(2px);
}

.mobile-menu-overlay.active {
  display: block;
}

/* ==================== Ranking Medal ==================== */

.ranking-medal {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

.rank-1 { 
  background: linear-gradient(135deg, #ffd700, #ffa500); 
  color: white;
  box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
}

.rank-2 { 
  background: linear-gradient(135deg, #c0c0c0, #808080); 
  color: white;
  box-shadow: 0 4px 12px rgba(192, 192, 192, 0.4);
}

.rank-3 { 
  background: linear-gradient(135deg, #cd7f32, #8b4513); 
  color: white;
  box-shadow: 0 4px 12px rgba(205, 127, 50, 0.4);
}

/* ==================== Loading Spinner ==================== */

.spinner {
  border: 3px solid var(--border);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  animation: spin 1s linear infinite;
  margin: 40px auto;
}

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

/* ==================== Form Elements ==================== */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-primary);
  transition: var(--transition);
  outline: none;
  font-family: inherit;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 6px;
}

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

.line-clamp-1 {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==================== Spacing System ==================== */

.space-y-1 > * + * { margin-top: 4px; }
.space-y-2 > * + * { margin-top: 6px; }
.space-y-3 > * + * { margin-top: 8px; }
.space-y-4 > * + * { margin-top: 12px; }
.space-y-6 > * + * { margin-top: 16px; }

.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }

/* ==================== Interactive Elements ==================== */

.interactive {
  cursor: pointer;
  transition: var(--transition);
}

.interactive:hover {
  opacity: 0.8;
}

.interactive:active {
  transform: scale(0.98);
}

/* ==================== Responsive ==================== */

@media (max-width: 768px) {
  body {
    font-size: 13px;
  }
  
  h1 { font-size: 24px; }
  h2 { font-size: 20px; }
  h3 { font-size: 16px; }
  
  .modal-content {
    padding: 20px;
  }
  
  button, .btn {
    padding: 8px 14px;
    font-size: 12px;
  }
}

/* ==================== Icon Styles ==================== */

.icon {
  width: 16px;
  height: 16px;
  display: inline-block;
}

.icon-lg {
  width: 20px;
  height: 20px;
}

/* ==================== Notification/Toast ==================== */

.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  font-weight: 500;
  z-index: 10000;
  animation: slideInRight 0.3s;
  max-width: 400px;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast-success { background: #10b981; color: white; }
.toast-error { background: #ef4444; color: white; }
.toast-warning { background: #f59e0b; color: white; }
.toast-info { background: #3b82f6; color: white; }

/* ==================== Avatar ==================== */

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: white;
  font-weight: 600;
  font-size: 14px;
}

.avatar-lg {
  width: 64px;
  height: 64px;
  font-size: 24px;
}

/* ==================== Link Styles ==================== */

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

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* ==================== Divider ==================== */

.divider {
  height: 1px;
  background: var(--border);
  margin: 16px 0;
}

/* ==================== Compact Video Card ==================== */

.video-card-compact {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  position: relative;
}

.video-card-compact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.video-card-compact:hover {
  /* transform: translateY(-4px); */
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-color: #667eea;
}

.video-card-compact:hover::before {
  /* opacity: 1; */
}

.video-info-compact {
  padding: 6px;
}

.video-title-compact {
  font-size: 11px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 3px;
  color: var(--text-primary);
}

.video-meta-compact {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 9px;
  color: var(--text-secondary);
}

.video-meta-compact i {
  font-size: 8px;
}

/* ==================== Tab Buttons (Unified Style) ==================== */

.tab-buttons {
  display: flex;
  gap: 6px;
  padding: 6px;
  background: var(--background);
  border-radius: var(--radius-md);
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-buttons::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.tab-btn i {
  font-size: 11px;
  margin-right: 4px;
}

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

.tab-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* ==================== Stats Badge ==================== */

.stats-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 6px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
}

.stats-badge i {
  font-size: 10px;
}

/* ==================== Ranking Item Compact ==================== */

.ranking-item-compact {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: var(--surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.ranking-item-compact:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.ranking-number {
  font-size: 16px;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 24px;
  text-align: center;
  filter: drop-shadow(0 2px 4px rgba(102, 126, 234, 0.2));
}

.ranking-thumbnail {
  width: 80px;
  height: 50px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--background);
}

.ranking-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.ranking-title {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.ranking-stats {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--text-secondary);
}

.ranking-score {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  min-width: 60px;
  text-align: right;
}

/* ==================== Section Header ==================== */

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  padding: 0 2px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.section-title i {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 18px;
  filter: drop-shadow(0 2px 4px rgba(102, 126, 234, 0.3));
}

.section-action {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.section-action:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* ==================== Ranking Card Specific ==================== */

.video-card-ranking {
  position: relative;
}

.video-card-ranking .video-thumbnail {
  position: relative;
}

.ranking-badge-number {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.75);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  z-index: 2;
  backdrop-filter: blur(4px);
}

.ranking-medal {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 2;
}

.ranking-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 100%);
  padding: 8px;
  opacity: 0;
  transition: opacity 0.3s;
}

.video-card-ranking:hover .ranking-overlay {
  /* opacity: 1; */
}

.ranking-score-large {
  display: flex;
  align-items: center;
  gap: 4px;
  color: white;
  font-size: 14px;
  font-weight: 700;
}

.ranking-score-large i {
  color: #ffd700;
  font-size: 12px;
}

/* ==================== Enhanced Hover Effects ==================== */

.video-card-compact {
  position: relative;
  overflow: hidden;
}

.video-card-compact::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
  pointer-events: none;
  z-index: 1;
}

.video-card-compact:hover::before {
  /* left: 100%; */
}

.video-card-compact:hover .video-thumbnail img {
  /* transform: scale(1.1); */
}

.video-thumbnail img {
  transition: transform 0.4s ease;
}

/* ==================== Pulse Animation for Top Rankings ==================== */

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.7);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(255, 215, 0, 0);
  }
}

.video-card-ranking:nth-child(1) .video-card-compact {
  animation: pulse-glow 2s infinite;
}

.video-card-ranking:nth-child(1):hover .video-card-compact {
  animation: none;
}

/* ==================== Interactive Badges ==================== */

.category-badge {
  transition: var(--transition);
  cursor: pointer;
}

.category-badge:hover {
  transform: scale(1.05);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.stats-badge {
  transition: var(--transition);
  cursor: pointer;
}

.stats-badge:hover {
  background: rgba(99, 102, 241, 0.2);
  transform: translateY(-1px);
}

/* ==================== Ranking Position Indicators ==================== */

.rank-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== Loading Skeleton ==================== */

.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-thumbnail {
  width: 100%;
  height: 130px;
}

.skeleton-text {
  height: 12px;
  width: 100%;
  margin-bottom: 6px;
}

.skeleton-text-short {
  height: 12px;
  width: 60%;
}

/* ==================== Scroll Progress Indicator ==================== */

.scroll-progress {
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 2px;
  margin-top: 8px;
  transition: width 0.3s;
}

/* ==================== Tooltip ==================== */

.tooltip {
  position: relative;
}

.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: 6px 12px;
  background: rgba(0, 0, 0, 0.9);
  color: white;
  font-size: 11px;
  font-weight: 500;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 100;
}

.tooltip::after {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: rgba(0, 0, 0, 0.9);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.tooltip:hover::before,
.tooltip:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

/* ==================== Bounce Animation for New Entries ==================== */

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

.animate-bounce-in {
  animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ==================== Like Button ==================== */

.like-btn {
  padding: 6px 12px;
  border-radius: 20px;
  border: 2px solid transparent;
  background: linear-gradient(135deg, #fff 0%, #fef2f2 100%);
  color: #ef4444;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  box-shadow: 0 2px 6px rgba(239, 68, 68, 0.1);
}

.like-btn:hover {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
  border-color: #ef4444;
  color: #dc2626;
  transform: scale(1.08);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
}

.like-btn.liked {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  border-color: #dc2626;
  color: white;
  animation: heartBeat 0.5s;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

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

@keyframes heartBeat {
  0% { transform: scale(1); }
  25% { transform: scale(1.3); }
  50% { transform: scale(1.1); }
  75% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

/* Favorite Button */
.favorite-btn {
  padding: 6px 12px;
  border-radius: 20px;
  border: 2px solid transparent;
  background: linear-gradient(135deg, #fff 0%, #fef9e7 100%);
  color: #f59e0b;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.1);
}

.favorite-btn:hover {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-color: #f59e0b;
  color: #d97706;
  transform: scale(1.08);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
}

.favorite-btn.favorited {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  border-color: #d97706;
  color: white;
  animation: starPulse 0.5s;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

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

@keyframes starPulse {
  0% { transform: scale(1) rotate(0deg); }
  25% { transform: scale(1.3) rotate(72deg); }
  50% { transform: scale(1.1) rotate(144deg); }
  75% { transform: scale(1.2) rotate(216deg); }
  100% { transform: scale(1) rotate(360deg); }
}

.like-count {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #ef4444;
  font-weight: 600;
}

/* ==================== Media Source Badge ==================== */

.media-source-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  font-size: 10px;
  font-weight: 700;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.75);
  color: white;
  backdrop-filter: blur(4px);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.media-source-badge i {
  font-size: 12px;
}

/* YouTube */
.media-source-badge:has(.fa-youtube) {
  background: rgba(255, 0, 0, 0.9);
}

/* Vimeo */
.media-source-badge:has(.fa-vimeo-v) {
  background: rgba(26, 183, 234, 0.9);
}

/* Instagram */
.media-source-badge:has(.fa-instagram) {
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

/* TikTok */
.media-source-badge:has(.fa-tiktok) {
  background: rgba(0, 0, 0, 0.9);
}

/* ==================== Language Switcher ==================== */

.language-switcher {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.language-btn {
  padding: 6px 10px;
  font-size: 18px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  opacity: 0.5;
}

.language-btn:hover {
  opacity: 0.8;
  background: rgba(99, 102, 241, 0.1);
}

.language-btn.active {
  opacity: 1;
  background: rgba(99, 102, 241, 0.15);
  transform: scale(1.1);
}

/* Small Language Switcher (Header) - Deprecated */
.language-switcher-small {
  display: flex;
  gap: 2px;
  padding: 2px;
  background: var(--surface);
  border-radius: 6px;
  border: 1px solid var(--border);
}

.language-btn-small {
  padding: 3px 6px;
  font-size: 12px;
  background: transparent;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0.5;
}

.language-btn-small:hover {
  opacity: 0.8;
  background: rgba(99, 102, 241, 0.1);
}

.language-btn-small.active {
  opacity: 1;
  background: rgba(99, 102, 241, 0.15);
}

/* Medium Language Switcher (Header - More Visible) */
.language-switcher-medium {
  display: flex;
  gap: 3px;
  padding: 3px;
  background: var(--surface);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.language-btn-medium {
  padding: 5px 9px;
  font-size: 17px;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0.6;
}

.language-btn-medium:hover {
  opacity: 0.9;
  background: rgba(99, 102, 241, 0.1);
}

.language-btn-medium.active {
  opacity: 1;
  background: rgba(99, 102, 241, 0.15);
  transform: scale(1.05);
}

/* ==================== Share Button ==================== */

.share-btn {
  padding: 6px 12px;
  border-radius: 20px;
  border: 2px solid transparent;
  background: linear-gradient(135deg, #fff 0%, #f0f9ff 100%);
  color: #0ea5e9;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 6px rgba(14, 165, 233, 0.1);
}

.share-btn:hover {
  background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
  border-color: #0ea5e9;
  color: #0284c7;
  transform: scale(1.08);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
}

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

/* ==================== Mobile Responsive Improvements ==================== */

@media (max-width: 768px) {
  /* Ensure no horizontal overflow */
  .max-w-7xl {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
  
  /* Mobile header optimization */
  header .btn-sm {
    padding: 6px 10px;
    font-size: 11px;
    white-space: nowrap;
  }
  
  /* Maintain visible language switcher on mobile */
  .language-btn-medium {
    padding: 4px 8px;
    font-size: 15px;
  }
  
  /* Compact modal padding on mobile */
  .modal-content {
    padding: 16px !important;
    margin: 12px;
  }
}

@media (max-width: 480px) {
  /* Extra small screens - more compact */
  header .btn-sm {
    padding: 5px 8px;
    font-size: 10px;
  }
  
  .language-btn-medium {
    padding: 3px 6px;
    font-size: 14px;
  }
  
  /* Hide text on very small screens, keep icons */
  header .btn-sm span:not(.hidden) {
    display: none;
  }
  
  header .btn-sm i {
    margin: 0;
  }
}
}
  
  /* Adjust hero section for mobile */
  .hero-section h2 {
    font-size: 1.75rem;
    line-height: 1.2;
  }
  
  .hero-section p {
    font-size: 0.875rem;
  }
  
  /* Stack buttons vertically on small screens */
  .hero-section .flex.gap-3 {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-section .btn {
    width: 100%;
  }
  
  /* Improve carousel on mobile */
  .horizontal-scroll {
    gap: 8px;
    padding: 4px 0;
  }
  
  .scroll-item {
    min-width: 160px;
  }
  
  /* Adjust video cards for mobile */
  .video-card-compact {
    width: 160px;
  }
  
  .video-thumbnail {
    height: 100px;
  }
  
  /* Improve button sizing on mobile */
  .btn-sm {
    padding: 6px 10px;
    font-size: 12px;
  }
  
  /* Modal adjustments */
  .modal-content {
    margin: 1rem;
    max-width: calc(100vw - 2rem);
  }
  
  /* Pricing cards stack on mobile */
  .grid.md\\:grid-cols-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  /* Further mobile optimizations */
  .hero-section {
    min-height: 200px;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }
  
  .hero-section h2 {
    font-size: 1.5rem;
  }
  
  .section-title {
    font-size: 1rem;
  }
  
  .tab-btn {
    padding: 4px 8px;
    font-size: 11px;
  }
  
  .scroll-item {
    min-width: 150px;
  }
  
  .video-card-compact {
    width: 150px;
  }
}

/* ==================== Interactive Enhancements ==================== */

/* Smooth animations for interactive elements */
.btn, .card, .video-card-compact {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.video-card-compact:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.video-card-compact:hover .video-thumbnail img {
  transform: scale(1.05);
}

.video-thumbnail img {
  transition: transform 0.3s ease;
}

/* Pulse animation for notifications */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Slide in animation */
@keyframes slideIn {
  from {
    transform: translateY(-10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

#search-results,
#notifications-panel,
#mobile-search {
  animation: slideIn 0.2s ease-out;
}


/* ==================== Announcements Section ==================== */

.announcements-section {
  background: var(--surface);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
  animation: slideIn 0.3s ease-out;
}

.announcement-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}

.announcement-header i {
  font-size: 16px;
}

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

.announcement-item {
  padding: 12px;
  background: var(--background);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  transition: var(--transition);
}

.announcement-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.announcement-item-title {
  font-weight: 600;
  font-size: 13px;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.announcement-item-content {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.announcement-item-date {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 6px;
  opacity: 0.7;
}

/* ==================== Admin Panel Styles (Modern & Responsive) ==================== */

.admin-section {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  animation: fadeInUp 0.4s ease-out;
}

.admin-section:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.admin-section-header {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.admin-section-header > div {
  display: flex;
  align-items: center;
  gap: 8px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  overflow-x: auto;
}

.admin-table th {
  background: var(--background);
  padding: 12px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
}

.admin-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-primary);
}

.admin-table tr:hover {
  background: var(--background);
}

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

.admin-actions button {
  padding: 6px 12px;
  font-size: 11px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.admin-actions .btn-edit {
  background: var(--accent);
  color: white;
}

.admin-actions .btn-edit:hover {
  background: #00bbdd;
  transform: scale(1.05);
}

.admin-actions .btn-delete {
  background: #ef4444;
  color: white;
}

.admin-actions .btn-delete:hover {
  background: #dc2626;
  transform: scale(1.05);
}

/* Responsive Grid Layout for Admin Forms */
.admin-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 20px;
}

@media (min-width: 768px) {
  .admin-form {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

.admin-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0; /* Critical for preventing overflow */
}

.admin-form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.admin-form-group input,
.admin-form-group textarea,
.admin-form-group select {
  width: 100%;
  max-width: 100%; /* Critical for preventing overflow */
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  background: var(--surface);
  color: var(--text-primary);
  transition: var(--transition);
  box-sizing: border-box; /* Critical for box model */
}

.admin-form-group input:focus,
.admin-form-group textarea:focus,
.admin-form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
  transform: translateY(-1px);
}

.admin-form-group textarea {
  min-height: 100px;
  resize: vertical;
}

/* Admin Card with Interactive Effects */
.admin-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  position: relative;
  overflow: hidden;
}

.admin-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.1), transparent);
  transition: left 0.5s;
}

.admin-card:hover::before {
  left: 100%;
}

.admin-card:hover {
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  transform: translateY(-4px) scale(1.02);
  border-color: var(--primary);
}

/* Loading Skeleton for Admin Cards */
.admin-card-skeleton {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ==================== Video Modal Specific ==================== */

#video-modal .modal-content {
  max-width: 900px;
  padding: 0;
}

.modal-video-content {
  padding: 0;
}

.video-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
}

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

.skeleton-line {
  height: 12px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: 4px;
  margin-bottom: 8px;
}

.skeleton-line:last-child {
  width: 60%;
}

/* Admin Button Enhancements */
.admin-section .btn {
  position: relative;
  overflow: hidden;
}

.admin-section .btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
}

.admin-section .btn:active::after {
  width: 200px;
  height: 200px;
}

/* Responsive Admin Layout */
@media (max-width: 768px) {
  .admin-section {
    padding: 16px;
    margin-bottom: 16px;
  }
  
  .admin-section-header {
    font-size: 16px;
  }
  
  .admin-form {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .admin-form-group input,
  .admin-form-group textarea,
  .admin-form-group select {
    font-size: 16px; /* Prevents iOS zoom on focus */
  }
}

@media (max-width: 480px) {
  .admin-section {
    padding: 12px;
  }
  
  .admin-card {
    padding: 12px;
  }
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==================== Modern Hero Content ==================== */

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  color: white;
  padding: 40px 20px;
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  color: white;
  text-shadow: 0 4px 12px rgba(0,0,0,0.6);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 32px;
  }
}

.hero-subtitle {
  font-size: 18px;
  margin-bottom: 32px;
  color: white;
  opacity: 0.95;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

@media (max-width: 768px) {
  .hero-subtitle {
    font-size: 14px;
  }
}

.hero-cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.hero-cta-btn {
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-lg);
}

.hero-cta-primary {
  background: var(--gradient-primary);
  color: white;
}

.hero-cta-primary:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-glow);
}

.hero-cta-secondary {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: white;
}

.hero-cta-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==================== ライトテーマ調整 ==================== */

body {
  background: var(--background);
  color: var(--text-primary);
}

.card,
.video-card-compact {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.card:hover,
.video-card-compact:hover {
  box-shadow: var(--shadow-md);
}

.btn-primary {
  background: var(--gradient-primary);
  border: none;
  color: white;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

input,
textarea,
select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
  outline: none;
}

/* ナビゲーション */
nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

/* タブボタン */
.tab-btn {
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid transparent;
}

.tab-btn.active {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active) {
  background: var(--surface-light);
  color: var(--text-primary);
  border-color: var(--border);
}

/* ==================== Static Page Styles ==================== */

.static-page-content {
  color: var(--text-primary);
  line-height: 1.8;
}

.static-page-content h1 {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border);
}

.static-page-content h2 {
  font-size: 2rem;
  font-weight: bold;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.static-page-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.static-page-content h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.static-page-content p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.static-page-content ul, 
.static-page-content ol {
  margin-left: 2rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.static-page-content li {
  margin-bottom: 0.5rem;
}

.static-page-content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.static-page-content a {
  color: #9333ea;
  text-decoration: underline;
  transition: var(--transition);
}

.static-page-content a:hover {
  color: #7e22ce;
}

.static-page-content code {
  background: var(--surface-light);
  padding: 0.2rem 0.4rem;
  border-radius: 0.25rem;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: #dc2626;
}

.static-page-content pre {
  background: var(--surface-light);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin-bottom: 1rem;
}

.static-page-content pre code {
  background: transparent;
  padding: 0;
  color: var(--text-primary);
}

.static-page-content blockquote {
  border-left: 4px solid #9333ea;
  padding-left: 1rem;
  margin: 1rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

.static-page-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
}

.static-page-content th,
.static-page-content td {
  border: 1px solid var(--border);
  padding: 0.75rem;
  text-align: left;
}

.static-page-content th {
  background: var(--surface-light);
  font-weight: 600;
  color: var(--text-primary);
}

.static-page-content td {
  color: var(--text-secondary);
}

.static-page-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ==================== Pricing Detail Zoom Effect ==================== */
.pricing-detail-item {
  transition: all 0.3s ease;
  cursor: default;
}

.pricing-detail-item:hover {
  transform: scale(1.15);
  font-weight: 600;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

/* ==================== Language Loading Animations ==================== */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-bounce {
  animation: bounce 1s infinite;
}

/* Language switcher loading state */
button.loading {
  position: relative;
  pointer-events: none;
}

button.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid #fff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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