/* ===========================
   平平校長的知－行－思
   風格三：溫暖人文
   =========================== */

:root {
  --bg:        #f5f0e8;
  --bg-alt:    #ede6d8;
  --bg-dark:   #2c3e35;
  --primary:   #3d6b4f;
  --primary-lt:#4f8a66;
  --accent:    #c17f59;
  --accent-lt: #d4956f;
  --text:      #2c2c2c;
  --text-lt:   #5a5a5a;
  --white:     #ffffff;
  --shadow:    rgba(61,107,79,0.12);
  --radius:    12px;
  --radius-lg: 24px;
  --transition:0.3s ease;
  --font-main: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
ul { list-style: none; }

/* ── Typography ── */
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
p  { margin-bottom: 1rem; }

/* ── Utility ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--white); }
.section-title {
  text-align: center;
  margin-bottom: 56px;
}
.section-title h2 { color: var(--primary); margin-bottom: 12px; }
.section-dark .section-title h2 { color: #a8d5b5; }
.section-title .underline {
  width: 60px; height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin: 0 auto;
}
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover { background: var(--primary-lt); color: var(--white); transform: translateY(-2px); }
.btn-accent {
  background: var(--accent);
  color: var(--white);
}
.btn-accent:hover { background: var(--accent-lt); color: var(--white); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: var(--white); }

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(245,240,232,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(61,107,79,0.12);
  transition: box-shadow var(--transition);
}
.navbar.scrolled { box-shadow: 0 4px 20px var(--shadow); }
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.navbar-brand {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .5px;
}
.navbar-brand span { color: var(--accent); }
.navbar-menu { display: flex; gap: 8px; align-items: center; }
.navbar-menu a {
  padding: 6px 14px;
  border-radius: 50px;
  font-size: .9rem;
  color: var(--text);
  transition: all var(--transition);
}
.navbar-menu a:hover,
.navbar-menu a.active { background: var(--primary); color: var(--white); }
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.navbar-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--primary);
  margin: 5px 0;
  transition: all var(--transition);
  border-radius: 2px;
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding-top: 68px;
  overflow: hidden;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(193,127,89,0.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero-content { padding: 60px 48px 60px 0; }
.hero-eyebrow {
  display: inline-block;
  background: rgba(61,107,79,0.1);
  color: var(--primary);
  border-radius: 50px;
  padding: 4px 16px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.hero-title { color: var(--text); margin-bottom: 16px; }
.hero-title em {
  font-style: normal;
  color: var(--accent);
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-lt);
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-photo {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  padding-top: 40px;
}
.hero-photo img {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  object-fit: cover;
  object-position: top center;
  box-shadow: -12px 20px 60px rgba(44,62,53,0.18);
}
.hero-photo-bg {
  position: absolute;
  bottom: 0; right: 0;
  width: 85%;
  height: 85%;
  background: var(--primary);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  z-index: -1;
  opacity: .12;
}
.hero-leaf {
  position: absolute;
  opacity: .07;
  pointer-events: none;
}
.hero-leaf-1 { top: 10%; right: 5%; width: 180px; transform: rotate(20deg); }
.hero-leaf-2 { bottom: 5%; left: 2%; width: 120px; transform: rotate(-30deg); }

/* ── Cards (Nav cards on homepage) ── */
.nav-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}
.nav-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: 0 4px 20px var(--shadow);
  transition: all var(--transition);
  border-bottom: 4px solid transparent;
}
.nav-card:hover {
  transform: translateY(-6px);
  border-bottom-color: var(--accent);
  box-shadow: 0 12px 40px rgba(61,107,79,0.16);
}
.nav-card .icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
  display: block;
}
.nav-card h3 { color: var(--primary); font-size: 1.05rem; margin-bottom: 8px; }
.nav-card p { font-size: .85rem; color: var(--text-lt); margin: 0; }

/* ── Timeline ── */
.timeline { position: relative; padding-left: 40px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 10px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--accent));
  border-radius: 1px;
}
.timeline-item {
  position: relative;
  margin-bottom: 40px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -36px; top: 6px;
  width: 14px; height: 14px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--bg);
  box-shadow: 0 0 0 2px var(--accent);
}
.timeline-year {
  font-size: .8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.timeline-item h3 { color: var(--primary); margin-bottom: 4px; font-size: 1rem; }
.timeline-item p { color: var(--text-lt); font-size: .9rem; margin: 0; }

/* ── Bio sections ── */
.bio-block {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 60px;
}
.bio-block-title {
  text-align: right;
  padding-top: 4px;
}
.bio-block-title h3 {
  color: var(--primary);
  font-size: 1.2rem;
  margin-bottom: 4px;
}
.bio-block-title .dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  margin-left: auto;
}
.bio-content {
  border-left: 3px solid rgba(193,127,89,0.3);
  padding-left: 24px;
}

/* ── Section cards (practice sub-sections) ── */
.practice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.practice-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 20px var(--shadow);
  transition: all var(--transition);
}
.practice-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(61,107,79,0.16); }
.practice-card-header {
  background: var(--primary);
  color: var(--white);
  padding: 24px;
  font-size: 1.3rem;
}
.practice-card-body { padding: 24px; }
.practice-card-body ul li {
  padding: 6px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  font-size: .9rem;
  color: var(--text-lt);
}
.practice-card-body ul li:last-child { border: none; }
.practice-card-body ul li::before {
  content: '▸ ';
  color: var(--accent);
  font-size: .75rem;
}

/* ── Works list ── */
.works-list { display: grid; gap: 16px; }
.work-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 2px 12px var(--shadow);
  transition: all var(--transition);
}
.work-item:hover { transform: translateX(6px); box-shadow: 0 4px 24px rgba(61,107,79,0.14); }
.work-badge {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: var(--radius);
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.work-info h4 { color: var(--primary); margin-bottom: 2px; font-size: .95rem; }
.work-info p { color: var(--text-lt); font-size: .82rem; margin: 0; }

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 28px;
}
.contact-icon {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(61,107,79,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.contact-text h4 { color: var(--primary); margin-bottom: 4px; }
.contact-text p, .contact-text a { color: var(--text-lt); font-size: .9rem; margin: 0; }
.contact-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 8px 40px var(--shadow);
}

/* ── Footer ── */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 36px 24px;
  font-size: .85rem;
}
.footer a { color: #a8d5b5; }
.footer strong { color: var(--white); }

/* ── Page banner (inner pages) ── */
.page-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
  color: var(--white);
  padding: 120px 24px 60px;
  text-align: center;
}
.page-banner h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 12px; }
.page-banner p { opacity: .8; font-size: 1rem; max-width: 500px; margin: 0 auto; }
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: .85rem;
  margin-top: 20px;
  opacity: .75;
}
.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { opacity: .5; }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ── Back to top ── */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(193,127,89,0.4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-3px); background: var(--accent-lt); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 100px 0 0; }
  .hero-content { padding: 40px 24px; order: 2; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-subtitle { margin: 0 auto 32px; }
  .hero-photo { order: 1; padding-top: 0; }
  .hero-photo img { max-width: 280px; border-radius: var(--radius-lg); }
  .contact-grid { grid-template-columns: 1fr; }
  .bio-block { grid-template-columns: 1fr; }
  .bio-block-title { text-align: left; }
  .bio-block-title .dot { margin-left: 0; }
}

@media (max-width: 640px) {
  /* Navbar mobile */
  .navbar-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--bg);
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid rgba(61,107,79,0.1);
    box-shadow: 0 8px 24px var(--shadow);
  }
  .navbar-menu.open { display: flex; }
  .navbar-menu a { text-align: center; padding: 10px; border-radius: var(--radius); }
  .navbar-toggle { display: block; }

  /* Section spacing */
  .section { padding: 48px 0; }
  .container { padding: 0 16px; }

  /* Hero tighter on mobile */
  .hero-photo img { max-width: 200px; }

  /* Page banner */
  .page-banner { padding: 100px 16px 48px; }

  /* Back to top button position */
  .back-to-top { bottom: 20px; right: 16px; width: 42px; height: 42px; font-size: 1rem; }

  /* Timeline compact */
  .timeline { padding-left: 28px; }
  .timeline-item::before { left: -25px; width: 12px; height: 12px; }

  /* Stat row wrap */
  .stat-row { gap: 20px; flex-wrap: wrap; }
  .stat-item h4 { font-size: 1.6rem; }
}

@media (max-width: 480px) {
  /* Navbar brand shorter */
  .navbar-brand { font-size: .92rem; }

  /* Typography scale down slightly */
  h2 { font-size: clamp(1.3rem, 5vw, 1.8rem); }
  h3 { font-size: clamp(1rem, 4vw, 1.2rem); }

  /* Buttons stacked */
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 300px; text-align: center; }

  /* Section title margin */
  .section-title { margin-bottom: 36px; }
}