@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

/* ==========================================================================
   Theme: theme-learning (광주평생학습포털) - K-GDS Light Theme
   Palette: Edu Teal #0D9488, Dark Teal #0F766E, Amber #F59E0B, Surface #FFFFFF, Bg #F8FAFC
   ========================================================================== */

:root {
  --primary-color: #0D9488;
  --primary-hover: #0F766E;
  --accent-amber: #F59E0B;
  --gov-navy: #0F2A4A;
  --bg-color: #F8FAFC;
  --surface-color: #FFFFFF;
  --surface-subtle: #F1F5F9;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --border-color: #E2E8F0;
  --border-strong: #CBD5E1;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Accessibility Skip Navigation */
.skip-nav {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--primary-color);
  color: #FFFFFF;
  padding: 10px 18px;
  font-weight: 700;
  font-size: 14px;
  z-index: 10000;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
}
.skip-nav:focus {
  top: 16px;
}

/* Header & GNB */
header.edu-header {
  background: var(--surface-color);
  border-bottom: 2px solid var(--primary-color);
  box-shadow: var(--shadow-sm);
}
.gov-topbar {
  background: #F1F5F9;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 6px 20px;
}
.gov-topbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.edu-logo {
  text-decoration: none;
  color: var(--primary-color);
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  flex-shrink: 0;
}
.edu-badge {
  background: var(--primary-color);
  color: #FFFFFF;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
}
nav.gnb {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 6px;
}
nav.gnb a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 13.5px;
  padding: 6px 11px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  white-space: nowrap;
}
nav.gnb a:hover, nav.gnb a.active {
  color: var(--primary-color);
  background: #E6FFFA;
}
nav.gnb a[href*="admin"] {
  background: rgba(245, 158, 11, 0.1);
  color: #D97706 !important;
  border: 1px solid rgba(245, 158, 11, 0.35);
  font-weight: 700;
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12.5px;
  margin-left: 6px;
}
nav.gnb a[href*="admin"]:hover {
  background: #F59E0B;
  color: #FFFFFF !important;
}

/* Main Layout */
main.main-content {
  max-width: 1400px;
  margin: 28px auto;
  padding: 0 20px;
  min-height: 600px;
}

/* Cards & Surface */
.card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}
.card-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 14px;
  margin-bottom: 18px;
}
.card-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--gov-navy);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}
.btn-teal {
  background: var(--primary-color);
  color: #FFFFFF;
}
.btn-teal:hover {
  background: var(--primary-hover);
}
.btn-amber {
  background: var(--accent-amber);
  color: #FFFFFF;
}
.btn-amber:hover {
  background: #D97706;
}
.btn-secondary {
  background: var(--surface-subtle);
  border-color: var(--border-strong);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background: #E2E8F0;
}
.btn-outline {
  background: transparent;
  border-color: var(--primary-color);
  color: var(--primary-color);
}
.btn-outline:hover {
  background: #E6FFFA;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
}
.badge-teal { background: #CCFBF1; color: #0F766E; }
.badge-amber { background: #FEF3C7; color: #92400E; }
.badge-blue { background: #E0F2FE; color: #0284C7; }
.badge-slate { background: #F1F5F9; color: #475569; }

/* Progress Gauge */
.progress-container {
  background: #E2E8F0;
  border-radius: 10px;
  height: 20px;
  width: 100%;
  overflow: hidden;
  margin: 10px 0;
}
.progress-bar {
  background: var(--primary-color);
  height: 100%;
  transition: width 0.3s ease;
}

/* Forms */
.form-group {
  margin-bottom: 18px;
}
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.form-control, .form-select {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-color);
  color: var(--text-primary);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  text-align: left;
}
.table th {
  background: var(--surface-subtle);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 12px 14px;
  border-bottom: 2px solid var(--border-color);
}
.table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}
.table-striped tbody tr:nth-of-type(odd) {
  background-color: #FAFAFA;
}
.table-hover tbody tr:hover {
  background-color: #F1F5F9;
}

/* LMS Video Preview Widget */
.video-player-mock {
  background: #0F172A;
  border-radius: var(--radius-md);
  padding: 24px;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.video-play-btn {
  width: 60px;
  height: 60px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 24px;
  margin: 30px auto;
  cursor: pointer;
  box-shadow: 0 0 0 10px rgba(13, 148, 136, 0.2);
}

/* ==========================================================================
   MOOC & Edutech Specialized Components (Round 3)
   ========================================================================== */

/* 1. Category Tag Chips Bar */
.tag-chips-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 14px 0;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  user-select: none;
}
.tag-chip:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background: #F0FDFA;
}
.tag-chip.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #FFFFFF;
  box-shadow: 0 2px 4px rgba(13, 148, 136, 0.25);
}

/* 2. Star Rating & Review Breakdown */
.rating-summary-box {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  align-items: center;
  margin-bottom: 20px;
}
@media (max-width: 768px) {
  .rating-summary-box {
    grid-template-columns: 1fr;
  }
}
.rating-big-score {
  text-align: center;
  padding-right: 20px;
  border-right: 1px solid var(--border-color);
}
@media (max-width: 768px) {
  .rating-big-score {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
  }
}
.rating-number {
  font-size: 44px;
  font-weight: 900;
  color: var(--gov-navy);
  line-height: 1;
  margin-bottom: 4px;
}
.stars-display {
  color: #F59E0B;
  font-size: 20px;
  letter-spacing: 2px;
  margin-bottom: 6px;
}
.rating-bars-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.rating-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--text-secondary);
}
.rating-bar-track {
  flex: 1;
  height: 8px;
  background: #E2E8F0;
  border-radius: 4px;
  overflow: hidden;
}
.rating-bar-fill {
  height: 100%;
  background: #F59E0B;
  border-radius: 4px;
}
.review-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  transition: border-color 0.2s ease;
}
.review-card:hover {
  border-color: var(--primary-color);
}
.review-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.verified-student-badge {
  background: #ECFDF5;
  color: #059669;
  border: 1px solid #A7F3D0;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
}

/* 3. Circular SVG Progress Ring */
.progress-ring-container {
  display: flex;
  align-items: center;
  gap: 24px;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 20px;
}
.progress-ring-svg {
  transform: rotate(-90deg);
  width: 110px;
  height: 110px;
}
.progress-ring-bg {
  stroke: #E2E8F0;
}
.progress-ring-circle {
  stroke: #0D9488;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease-in-out;
}

/* 4. Syllabus Tree */
.syllabus-tree {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 14px;
}
.syllabus-item {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  background: #FFFFFF;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.syllabus-item:last-child {
  border-bottom: none;
}
.syllabus-item:nth-child(even) {
  background: #F8FAFC;
}
.syllabus-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}
.session-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #0D9488;
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 800;
  flex-shrink: 0;
}

/* 5. Gold-Embossed Official Digital Certificate */
.cert-gold-frame {
  max-width: 820px;
  margin: 0 auto;
  background: #FFFDF8;
  border: 8px double #D97706;
  border-radius: 12px;
  padding: 12px;
  box-shadow: 0 10px 25px -5px rgba(217, 119, 6, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  position: relative;
}
.cert-gold-inner {
  border: 2px solid #F59E0B;
  border-radius: 6px;
  padding: 40px 36px;
  text-align: center;
  background: #FFFFFF;
  position: relative;
  overflow: hidden;
}
.cert-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 280px;
  height: 280px;
  opacity: 0.04;
  pointer-events: none;
  background: radial-gradient(circle, #0F2A4A 30%, transparent 70%);
  border-radius: 50%;
}
.cert-gold-seal {
  display: inline-block;
  width: 72px;
  height: 72px;
  border: 3px solid #DC2626;
  border-radius: 50%;
  color: #DC2626;
  font-weight: 900;
  font-size: 13px;
  line-height: 1.2;
  padding-top: 18px;
  background: rgba(220, 38, 38, 0.04);
  box-shadow: inset 0 0 4px rgba(220, 38, 38, 0.2);
  transform: rotate(-8deg);
}
.cert-hash-badge {
  font-family: monospace;
  font-size: 11px;
  color: #64748B;
  background: #F1F5F9;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid #CBD5E1;
  display: inline-block;
  margin-top: 8px;
}

/* Print Styles for Certificate */
@media print {
  body {
    background: #FFFFFF !important;
    color: #000000 !important;
  }
  header, footer, .btn, .skip-nav {
    display: none !important;
  }
  .cert-container {
    box-shadow: none !important;
    border: 3px double #000000 !important;
    margin: 0 !important;
    padding: 20mm !important;
    width: 100% !important;
  }
}

/* Light Footer */
footer.edu-footer {
  background: var(--surface-color);
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 36px 20px 28px;
  font-size: 13px;
  line-height: 1.7;
}
.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
}
.footer-links {
  display: flex;
  gap: 18px;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}
.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
}
.footer-links a:hover {
  color: var(--primary-color);
}
.footer-links a.policy-link {
  font-weight: 700;
  color: var(--gov-navy);
}
.gonggong-nuri-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-secondary);
}
.gonggong-nuri-badge {
  background: #0056B3;
  color: #FFFFFF;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 700;
  font-size: 11px;
}