/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:   #2e7d32;
  --primary-dark: #1b5e20;
  --accent:    #f57f17;
  --accent-light: #fff8e1;
  --bg:        #fafaf8;
  --surface:   #ffffff;
  --text:      #212121;
  --text-muted:#616161;
  --border:    #e0e0e0;
  --radius:    12px;
  --shadow:    0 2px 12px rgba(0,0,0,.10);
  --nav-h:     64px;
}

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
code { background: #f5f5f5; padding: 2px 6px; border-radius: 4px; font-size: .9em; }

/* ===== HEADER ===== */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--primary-dark);
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
  height: var(--nav-h);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  gap: 1rem;
}

.site-title {
  display: flex;
  align-items: center;
  gap: .5rem;
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo-icon { font-size: 1.4rem; }

#main-nav ul {
  display: flex;
  gap: .25rem;
}

.nav-link {
  display: block;
  padding: .45rem .9rem;
  border-radius: 6px;
  color: rgba(255,255,255,.85);
  font-size: .95rem;
  font-weight: 500;
  transition: background .2s, color .2s;
  cursor: pointer;
}
.nav-link:hover,
.nav-link.active {
  background: rgba(255,255,255,.18);
  color: #fff;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
  padding: .2rem .5rem;
}

/* ===== PAGES ===== */
.page { display: none; flex: 1; }
.page.active { display: block; }

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  background:
    url('images/hero-bg.jpg') center center / cover no-repeat;
  overflow: hidden;
}

.mini-hero {
  min-height: 420px;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.35);
}

.hero-content {
  position: relative;
  text-align: left;
  color: #fff;
  padding: 2.5rem 3rem;
  max-width: 520px;
}

.hero-content h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: .04em;
  text-shadow: 0 2px 10px rgba(0,0,0,.6);
  margin-bottom: .5rem;
}

.hero-sub {
  font-size: clamp(.95rem, 1.8vw, 1.15rem);
  opacity: .95;
  letter-spacing: .06em;
  text-shadow: 0 1px 6px rgba(0,0,0,.5);
}

/* ===== CONTAINER ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-block { padding: 3rem 1.5rem; }

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 1.5rem;
  padding-bottom: .5rem;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
}

/* ===== INTRO CARD ===== */
.intro-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem 2.5rem;
  border-left: 5px solid var(--primary);
}
.intro-card p { margin-bottom: 1rem; color: #333; }
.intro-card p:last-child { margin-bottom: 0; }

/* ===== FEATURE GRID ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
  border-top: 4px solid var(--primary);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,.13);
}
.feature-icon { font-size: 2.5rem; margin-bottom: .75rem; }
.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: .5rem; color: var(--primary-dark); }
.feature-card p { font-size: .9rem; color: var(--text-muted); margin-bottom: 1.25rem; }

.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
  padding: .4rem 1.1rem;
  border-radius: 99px;
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: .75rem 2rem;
  border-radius: 99px;
  font-size: 1rem;
  font-weight: 700;
  transition: background .2s, transform .2s;
  margin-top: 1.25rem;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* ===== LANG BANNER ===== */
.lang-banner {
  background: var(--primary-dark);
  padding: 1.5rem;
  text-align: center;
}
.lang-banner .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}
.lang-pill {
  background: rgba(255,255,255,.15);
  color: #fff;
  padding: .5rem 1.5rem;
  border-radius: 99px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .05em;
}

/* ===== COURSE PAGE ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.course-block {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem;
}
.course-block.junior { border-top: 4px solid #1565c0; }
.course-block.senior { border-top: 4px solid var(--accent); }

.course-block-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.25rem;
}
.course-icon { font-size: 1.75rem; }
.course-block-header h2 { font-size: 1.1rem; font-weight: 700; color: var(--primary-dark); }

.faq-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: .75rem;
  overflow: hidden;
}
.faq-item summary {
  padding: .75rem 1rem;
  font-weight: 600;
  cursor: pointer;
  background: #f5f5f5;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background .2s;
}
.faq-item summary::after { content: "＋"; font-size: 1.1rem; color: var(--primary); }
.faq-item[open] summary::after { content: "－"; }
.faq-item summary:hover { background: #eeeeee; }
.faq-item p {
  padding: 1rem;
  font-size: .93rem;
  color: #444;
  border-top: 1px solid var(--border);
}

.summary-table-wrap { overflow-x: auto; }
.summary-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .93rem;
}
.summary-table th {
  background: var(--primary);
  color: #fff;
  padding: .75rem 1rem;
  text-align: left;
  font-weight: 600;
}
.summary-table td {
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--border);
}
.summary-table tbody tr:nth-child(even) { background: #f9fafb; }
.summary-table tbody tr:hover { background: #e8f5e9; }

/* ===== TIMETABLE PAGE ===== */
.text-center { text-align: center; }

.timetable-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 3rem 2rem;
  max-width: 560px;
  margin: 0 auto 2rem;
  border-top: 5px solid var(--primary);
}
.tt-icon { font-size: 3.5rem; margin-bottom: 1rem; }
.timetable-card h2 { font-size: 1.4rem; font-weight: 700; margin-bottom: .75rem; color: var(--primary-dark); }
.timetable-card p { color: var(--text-muted); }

.notice-box {
  background: var(--accent-light);
  border: 1px solid #ffe082;
  border-left: 5px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  max-width: 640px;
  margin: 0 auto;
  text-align: left;
}
.notice-box ul { margin-top: .5rem; padding-left: 1.25rem; list-style: disc; }
.notice-box li { margin-bottom: .35rem; font-size: .93rem; color: #555; }

/* ===== PROGRESS PAGE ===== */
.activity-section { margin-bottom: 2.5rem; }

.activity-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.activity-header h2 { font-size: 1.35rem; font-weight: 700; color: var(--primary-dark); }

.act-badge {
  display: inline-block;
  padding: .3rem .9rem;
  border-radius: 99px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.act-badge.teacher  { background: #e3f2fd; color: #0d47a1; }
.act-badge.student  { background: #fce4ec; color: #880e4f; }
.act-badge.festival { background: #f3e5f5; color: #6a1b9a; }

.activity-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
.activity-text p { margin-bottom: .75rem; color: #333; }
.act-list { margin-top: .5rem; }
.act-list li { padding: .3rem 0; font-size: .93rem; }

.photo-placeholder {
  background: #f5f5f5;
  border: 2px dashed #bdbdbd;
  border-radius: var(--radius);
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #9e9e9e;
  gap: .5rem;
  padding: 1.5rem;
}
.photo-placeholder span { font-size: 3rem; }
.photo-placeholder p { font-size: .9rem; line-height: 1.5; }

.activity-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
}

.drive-folder {
  width: 100%;
  height: 420px;
  border: none;
  border-radius: var(--radius);
}

.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

/* ===== HIGHLIGHT PAGE ===== */
.highlight-intro {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 720px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}
.gallery-placeholder {
  background: #f5f5f5;
  border: 2px dashed #bdbdbd;
  border-radius: var(--radius);
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #9e9e9e;
  padding: 1rem;
  transition: background .2s;
}
.gallery-placeholder:hover { background: #eeeeee; }
.gallery-placeholder span { font-size: 2.5rem; margin-bottom: .5rem; }
.gallery-placeholder p { font-size: .88rem; }

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.video-iframe {
  width: 100%;
  height: 450px;
  border: none;
  border-radius: var(--radius);
  display: block;
  background: #000;
}

/* ===== PURPOSE GRID (首頁實施目的) ===== */
.purpose-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.purpose-item {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.purpose-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  flex-shrink: 0;
}
.purpose-item p { font-size: .93rem; color: #444; line-height: 1.7; }

/* ===== BINDING TABLE (綁課安排) ===== */
.grade-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 1.5rem 0 .75rem;
}
.binding-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

/* ===== SEMESTER CARDS (課程亮點成果發表) ===== */
.semester-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.semester-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
}
.semester-card.upper { border-top: 4px solid #1565c0; }
.semester-card.lower { border-top: 4px solid var(--accent); }
.semester-label {
  display: inline-block;
  padding: .25rem .85rem;
  border-radius: 99px;
  font-size: .8rem;
  font-weight: 700;
  margin-bottom: .75rem;
  background: #e3f2fd;
  color: #0d47a1;
}
.semester-card.lower .semester-label { background: #fff8e1; color: #e65100; }
.semester-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--primary-dark); margin-bottom: .75rem; }
.semester-card ul { padding-left: 1.1rem; list-style: disc; }
.semester-card li { font-size: .93rem; color: #444; padding: .25rem 0; }

/* ===== PDF PAGE ===== */
.pdf-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.pdf-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.pdf-viewer {
  width: 100%;
  height: 80vh;
  min-height: 600px;
  border: none;
  display: block;
}

/* ===== FOOTER ===== */
#site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,.75);
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: .9rem;
  margin-top: auto;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hamburger { display: block; }

  #main-nav {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--primary-dark);
    padding: .75rem 1rem 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,.3);
  }
  #main-nav.open { display: block; }
  #main-nav ul { flex-direction: column; gap: .25rem; }
  .nav-link { padding: .6rem 1rem; }

  .two-col { grid-template-columns: 1fr; }
  .activity-content { grid-template-columns: 1fr; }
  .intro-card { padding: 1.5rem; }
  .section-block { padding: 2rem 1rem; }
  .timetable-card { padding: 2rem 1.25rem; }
}

@media (max-width: 480px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .binding-wrap { grid-template-columns: 1fr; }
  .semester-grid { grid-template-columns: 1fr; }
  .purpose-grid { grid-template-columns: 1fr; }
}