/* 劍道概說 — Global Stylesheet */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@300;400;600;700&family=Noto+Sans+TC:wght@300;400;500&display=swap');

:root {
  --color-primary: #1a2744;
  --color-accent: #c9973b;
  --color-accent-light: #e8b86d;
  --color-bg: #f8f5ef;
  --color-text: #2d2d2d;
  --color-muted: #6b6b6b;
  --color-white: #ffffff;
  --color-border: #e0d9cf;
  --color-dark-overlay: rgba(15, 20, 40, 0.65);
  --font-serif: 'Noto Serif TC', 'Georgia', serif;
  --font-sans: 'Noto Sans TC', sans-serif;
  --max-width: 1100px;
  --nav-height: 70px;
  --radius: 8px;
  --shadow: 0 4px 20px rgba(0,0,0,0.1);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 1rem;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  line-height: 1.3;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 600; }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }

p { margin-bottom: 1rem; color: var(--color-text); }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary); }

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

/* Container */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-primary);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

.nav-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent) !important;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.85);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent-light);
  border-bottom-color: var(--color-accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.6rem;
  cursor: pointer;
  line-height: 1;
}

/* Hero */
.hero {
  position: relative;
  min-height: 88vh;
  background: var(--color-primary) center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-dark-overlay);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
}

.hero-content h1 {
  color: var(--color-white);
  margin-bottom: 1rem;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}

.hero-content p {
  color: rgba(255,255,255,0.88);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Page Hero (inner pages) */
.page-hero {
  position: relative;
  min-height: 50vh;
  background: var(--color-primary) center/cover no-repeat;
  display: flex;
  align-items: flex-end;
  padding-bottom: 3rem;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(15,20,40,0.4) 0%, rgba(15,20,40,0.8) 100%);
}

.page-hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
  width: 100%;
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 0.5rem;
}

.breadcrumb a { color: var(--color-accent-light); }
.breadcrumb span { color: rgba(255,255,255,0.5); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.7em 1.8em;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.7);
}

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

/* Sections */
.section-wrapper {
  padding-block: clamp(3rem, 6vw, 5rem);
}

.section-wrapper.bg-light {
  background: #f0ece3;
}

.section-title {
  text-align: center;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  text-align: center;
  color: var(--color-muted);
  font-size: 1.05rem;
  margin-bottom: 3rem;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-accent);
  margin: 0.75rem auto 0;
  border-radius: 2px;
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.14);
}

.card-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  display: block;
}

.card h3 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.card .card-link {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-accent);
}

/* Two-column layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

/* Blockquote */
blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 1.5rem 2rem;
  background: rgba(201,151,59,0.08);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-primary);
  font-style: italic;
}

blockquote cite {
  display: block;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  font-style: normal;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin-inline: auto;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0.75rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-accent);
  opacity: 0.4;
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
}

.timeline-dot {
  position: absolute;
  left: -1.9rem;
  top: 0.4rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-date {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
  font-family: var(--font-serif);
}

.timeline-content h3 {
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
}

/* Feature list */
.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-item {
  padding: 1.5rem;
  background: var(--color-white);
  border-radius: var(--radius);
  border-top: 3px solid var(--color-accent);
  box-shadow: var(--shadow);
}

.feature-item h4 {
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
}

/* Rank Table */
.rank-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.rank-table th {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 1rem 1.5rem;
  text-align: left;
  font-family: var(--font-serif);
  font-weight: 600;
}

.rank-table td {
  padding: 0.875rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.rank-table tr:last-child td { border-bottom: none; }
.rank-table tr:nth-child(even) td { background: var(--color-bg); }

/* CTA Banner */
.cta-banner {
  background: var(--color-primary);
  text-align: center;
  padding-block: 4rem;
}

.cta-banner h2 { color: var(--color-white); margin-bottom: 1rem; }
.cta-banner p { color: rgba(255,255,255,0.75); margin-bottom: 2rem; }

/* Footer */
.site-footer {
  background: #0e1628;
  color: rgba(255,255,255,0.7);
  padding-block: 3rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
}

.footer-brand .nav-logo {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  display: block;
}

.footer-brand p {
  color: rgba(255,255,255,0.5);
  font-size: 0.875rem;
  margin: 0;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: rgba(255,255,255,0.65);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--color-accent-light); }

.footer-bottom {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2.5rem);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  text-align: center;
}

/* Utilities */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-primary);
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  }

  .nav-links.open { display: flex; }
  .nav-links li { border-top: 1px solid rgba(255,255,255,0.08); }
  .nav-links a { display: block; padding: 0.875rem 2rem; border-bottom: none; }

  .two-col {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .feature-list {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero { min-height: 75vh; }
  .page-hero { min-height: 40vh; }
  .hero-cta { flex-direction: column; align-items: center; }
}