@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;700&display=swap');

:root {
  --black: #0a0a0a;
  --white: #fafafa;
  --gray-50: #f5f5f5;
  --gray-100: #e8e8e8;
  --gray-200: #d1d1d1;
  --gray-300: #b0b0b0;
  --gray-500: #777777;
  --gray-600: #555555;
  --gray-800: #2a2a2a;
  --gray-900: #1a1a1a;
  --accent: #e07b53;
  --font-main: 'Noto Sans TC', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background-color: var(--black);
  color: var(--white);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent);
  color: var(--white);
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--black);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-600);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 48px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 20px 0;
  transition: background 0.3s ease, padding 0.3s ease;
}

.site-header.scrolled {
  background: rgba(10, 10, 10, 0.95);
  padding: 14px 0;
  backdrop-filter: blur(12px);
}

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

.site-logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.site-logo span {
  color: var(--accent);
}

.header-nav {
  display: flex;
  gap: 32px;
}

.header-nav a {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--gray-300);
  transition: color 0.3s ease;
}

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

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 48px 80px;
  background: radial-gradient(ellipse at center, #1a1a1a 0%, #0a0a0a 70%);
}

.hero-eyebrow {
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 16px;
  color: var(--gray-500);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 64px;
  margin-top: 60px;
}

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

.hero-stat-num {
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.hero-stat-label {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 10px;
  letter-spacing: 0.15em;
}

/* Filters */
.filters {
  padding: 80px 0 40px;
  border-bottom: 1px solid var(--gray-800);
  margin-bottom: 60px;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.filter-btn {
  padding: 10px 22px;
  background: transparent;
  border: 1px solid var(--gray-700);
  color: var(--gray-500);
  font-size: 12px;
  font-family: var(--font-main);
  font-weight: 400;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.25s ease;
  border-radius: 2px;
}

.filter-btn:hover {
  border-color: var(--gray-500);
  color: var(--white);
}

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

/* Template Grid */
.templates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 32px;
  padding-bottom: 120px;
}

/* Auto number cards */
.templates-grid { counter-reset: template-num; }
.template-card { counter-increment: template-num; position: relative; }
.template-card::before {
  content: counter(template-num, decimal-leading-zero);
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
  letter-spacing: 0.08em;
  z-index: 2;
  background: rgba(255,255,255,0.05);
  padding: 4px 10px;
  border-radius: 2px;
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(4px);
}

/* Template Card */
.template-card {
  background: var(--gray-900);
  border: 1px solid var(--gray-800);
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  border-radius: 4px;
}

.template-card:hover {
  border-color: var(--gray-600);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.template-preview {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--gray-800);
}

.template-preview iframe {
  width: 100%;
  height: 100%;
  border: none;
  transform: scale(1);
  transform-origin: top left;
  pointer-events: none;
}

.template-card:hover .template-preview iframe {
  transform: scale(1.02);
}

.template-preview-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.template-card:hover .template-preview-overlay {
  opacity: 1;
}

.template-info {
  padding: 24px;
}

.template-category {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.template-name {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.template-desc {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 16px;
}

.template-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.template-tag {
  padding: 4px 10px;
  background: var(--gray-800);
  font-size: 11px;
  color: var(--gray-400);
  letter-spacing: 0.03em;
  border-radius: 2px;
}

.template-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.template-pages,
.template-layout {
  font-size: 11px;
  color: var(--gray-600);
  letter-spacing: 0.05em;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 12px;
  font-family: var(--font-main);
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  border-radius: 2px;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--gray-600);
  color: var(--white);
}

.btn-outline:hover {
  border-color: var(--white);
  background: var(--white);
  color: var(--black);
}

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

.btn-outline:disabled:hover {
  border-color: var(--gray-600);
  background: transparent;
  color: var(--white);
}

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

.btn-accent:hover {
  filter: brightness(1.1);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 11px;
}

/* Detail Page */
.detail-hero {
  padding: 160px 0 60px;
  text-align: center;
}

.detail-category {
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.detail-title {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 700;
  margin-bottom: 16px;
}

.detail-sub {
  font-size: 15px;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

.detail-preview {
  padding: 0 40px;
  margin-bottom: 60px;
}

.detail-preview iframe {
  width: 100%;
  max-width: 1200px;
  height: 700px;
  margin: 0 auto;
  display: block;
  border: 1px solid var(--gray-800);
  border-radius: 4px;
}

.detail-preview img {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  display: block;
  border: 1px solid var(--gray-800);
  border-radius: 4px;
  object-fit: contain;
}

.detail-sections {
  padding: 80px 0;
  border-top: 1px solid var(--gray-800);
}

.detail-section-title {
  font-size: 13px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.detail-tag {
  padding: 6px 14px;
  background: var(--gray-800);
  font-size: 12px;
  color: var(--gray-300);
  letter-spacing: 0.03em;
  border-radius: 2px;
}

.detail-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.detail-info-item {
  background: var(--gray-900);
  padding: 24px;
  border: 1px solid var(--gray-800);
  border-radius: 4px;
}

.detail-info-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.detail-info-value {
  font-size: 15px;
  color: var(--white);
}

.detail-pages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.detail-page-item {
  padding: 12px 16px;
  background: var(--gray-900);
  border: 1px solid var(--gray-800);
  font-size: 12px;
  color: var(--gray-400);
  text-align: center;
  border-radius: 2px;
}

.detail-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  padding: 60px 0 120px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-500);
  transition: color 0.3s ease;
  padding: 40px 0;
}

.back-link:hover {
  color: var(--white);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--gray-800);
  padding: 40px 0;
  text-align: center;
}

.footer-text {
  font-size: 12px;
  color: var(--gray-600);
  letter-spacing: 0.05em;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 24px;
  }

  .header-nav {
    display: none;
  }

  .hero {
    padding: 100px 24px 60px;
  }

  .hero-stats {
    gap: 32px;
  }

  .hero-stat-num {
    font-size: 28px;
  }

  .templates-grid {
    grid-template-columns: 1fr;
  }

  .detail-info-grid {
    grid-template-columns: 1fr;
  }

  .detail-pages {
    grid-template-columns: repeat(3, 1fr);
  }

  .detail-actions {
    flex-direction: column;
    align-items: center;
  }
}