/* ============================================================
   SHARED STYLESHEET — presentasjoner/
   Brukes av alle presentasjons-undersider.
   Legg denne filen i presentasjoner/-mappen.
   Hver index.html refererer til den med: <link rel="stylesheet" href="../style.css">
   ============================================================ */

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

:root {
  --text:        #37352f;
  --text-light:  #6b6860;
  --bg:          #ffffff;
  --sidebar-bg:  #f7f6f3;
  --border:      #e8e7e4;
  --accent:      #0a7a6e;
  --accent-soft: #e6f4f2;
  --chapter-bg:  #111;
  --chapter-fg:  #ffffff;
  --sidebar-w:   240px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================================
   SIDEBAR NAV (desktop)
   ============================================================ */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 32px 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar-logo {
  padding: 0 20px 24px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.sidebar-logo-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.sidebar-logo-title {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 2px;
}

.sidebar nav { flex: 1; }

.nav-group-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-light);
  padding: 12px 20px 4px 20px;
}

.sidebar nav a {
  display: block;
  font-size: 13px;
  color: var(--text-light);
  padding: 5px 20px;
  border-left: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.sidebar nav a:hover {
  color: var(--text);
  background: var(--border);
  text-decoration: none;
}

.sidebar nav a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-soft);
  font-weight: 500;
}

.nav-chapter-link {
  font-size: 11px !important;
  font-weight: 600 !important;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text) !important;
  margin-top: 6px;
}

/* ============================================================
   MAIN CONTENT AREA
   ============================================================ */
.main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
}

/* ============================================================
   MOBILE HEADER & HAMBURGER
   ============================================================ */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 52px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  align-items: center;
  padding: 0 16px;
  z-index: 200;
}

.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.25s;
}

.mobile-title {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
  margin: 0 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 150;
}

.sidebar-overlay.open { display: block; }

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 160;
    width: 280px;
  }

  .sidebar.open { transform: translateX(0); }
  .mobile-header { display: flex; }

  .main {
    margin-left: 0;
    padding-top: 52px;
  }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 80px 64px 64px 64px;
  border-bottom: 1px solid var(--border);
  max-width: 860px;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.hero-meta {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-meta-sep {
  color: var(--border);
}

.hero-speaker {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-speaker-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.hero-speaker-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.hero-speaker-org {
  font-size: 13px;
  color: var(--text-light);
}

@media (max-width: 768px) {
  .hero { padding: 40px 24px 40px 24px; }
}

/* ============================================================
   CHAPTER DIVIDER
   ============================================================ */
.chapter-divider {
  background: var(--chapter-bg);
  color: var(--chapter-fg);
  padding: 48px 64px;
}

.chapter-divider h2 {
  font-size: clamp(24px, 3.5vw, 38px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.chapter-divider .chapter-sub {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-top: 8px;
}

@media (max-width: 768px) {
  .chapter-divider { padding: 36px 24px; }
}

/* ============================================================
   CONTENT SECTIONS
   ============================================================ */
.slide-section {
  padding: 56px 64px;
  border-bottom: 1px solid var(--border);
  max-width: 1100px;
}

.section-heading {
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 32px;
  letter-spacing: -0.01em;
}

.section-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.slide-image {
  width: 100%;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
}

.slide-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--sidebar-bg);
  border: 2px dashed var(--border);
  border-radius: 6px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-light);
  font-style: italic;
}

.slide-text-col p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  margin-bottom: 16px;
}

.slide-text-col p:last-child { margin-bottom: 0; }

.sub-heading {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-top: 20px;
  margin-bottom: 8px;
}

.content-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 6px 14px;
  margin-top: 12px;
  transition: background 0.15s;
}

.content-link:hover {
  background: var(--accent-soft);
  text-decoration: none;
}

.section-body.text-only { grid-template-columns: 1fr; }

.concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 8px;
}

.concept-card {
  background: var(--sidebar-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.concept-card h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.concept-card p {
  font-size: 14px !important;
  color: var(--text-light) !important;
  margin-bottom: 0 !important;
}

@media (max-width: 768px) {
  .slide-section { padding: 36px 24px; }

  .section-body {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  .slide-image-col { order: 1; }
  .slide-text-col  { order: 2; }
  .concept-grid    { grid-template-columns: 1fr; }
}

/* ============================================================
   EXERCISE SECTION
   ============================================================ */
.exercise-section {
  padding: 56px 64px;
  border-bottom: 1px solid var(--border);
  max-width: 900px;
}

.exercise-intro {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 8px;
}

.exercise-legend {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.exercise-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-light);
}

.exercise-legend-item .emoji { font-size: 20px; }

.exercise-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 36px;
}

.exercise-table th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-light);
  padding: 10px 16px;
  border-bottom: 2px solid var(--border);
}

.exercise-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  vertical-align: middle;
}

.exercise-table tr:last-child td { border-bottom: none; }
.exercise-table tr:hover td { background: var(--sidebar-bg); }

.answer-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 20px;
  padding: 4px 12px;
  white-space: nowrap;
}

.badge-human { background: #fdf0e6; color: #a0530c; }
.badge-ki    { background: var(--accent-soft); color: var(--accent); }

.exercise-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  padding: 12px 24px;
  transition: opacity 0.15s;
}

.exercise-cta:hover { opacity: 0.88; text-decoration: none; }

@media (max-width: 768px) {
  .exercise-section { padding: 36px 24px; }

  .exercise-table th:nth-child(2),
  .exercise-table td:nth-child(2) { display: none; }
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--sidebar-bg);
  border-top: 1px solid var(--border);
  padding: 40px 64px;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-light);
  transition: color 0.15s;
}

.footer-link:hover { color: var(--accent); text-decoration: none; }

.footer-link svg { width: 16px; height: 16px; flex-shrink: 0; }

.footer-note {
  width: 100%;
  font-size: 12px;
  color: var(--text-light);
  margin-top: 16px;
}

@media (max-width: 768px) {
  footer { padding: 32px 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}