@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Sora:wght@300;400;600;700&display=swap');

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #1e2630;
  --border: #30363d;
  --accent: #58a6ff;
  --accent2: #3fb950;
  --danger: #f85149;
  --warn: #d29922;
  --text: #e6edf3;
  --text2: #8b949e;
  --radius: 10px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Sora', sans-serif;
  min-height: 100vh;
  padding: 0 1rem 3rem;
}

header {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

header h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  color: var(--accent);
  letter-spacing: -0.5px;
}

header p {
  color: var(--text2);
  font-size: 0.85rem;
  margin-top: 0.4rem;
  font-family: 'JetBrains Mono', monospace;
}

.exam-info {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.badge {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.3rem 0.9rem;
  font-size: 0.78rem;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text2);
}

.badge.warn { border-color: var(--warn); color: var(--warn); }

.exam-info.compact { gap: 0.5rem; margin-top: 0.6rem; }
.exam-info.compact .badge { font-size: 0.68rem; padding: 0.18rem 0.65rem; }

.container { max-width: 780px; margin: 0 auto; }

/* START SCREEN */
#start-screen { text-align: center; }

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}

.category-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(88,166,255,0.1);
}

.category-card .cat-icon { font-size: 1.6rem; margin-bottom: 0.5rem; }
.category-card h3 { font-size: 0.95rem; color: var(--text); margin-bottom: 0.2rem; }
.category-card p { font-size: 0.75rem; color: var(--text2); }

.start-buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.btn {
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-family: 'Sora', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #0d1117;
}

.btn-primary:hover { background: #79bcff; transform: translateY(-1px); }

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* QUIZ SCREEN */
#quiz-screen { display: none; }

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.progress-info {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text2);
}

.progress-bar-wrap {
  width: 100%;
  height: 4px;
  background: var(--surface2);
  border-radius: 2px;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.4s ease;
}

.category-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text2);
}

.question-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  margin-bottom: 1.2rem;
}

.question-card h2 {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.code-block {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: #a5d6ff;
  margin: 0.8rem 0;
  white-space: pre-wrap;
  line-height: 1.6;
  overflow-x: auto;
}

.options-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.option-btn {
  width: 100%;
  text-align: left;
  padding: 0.85rem 1.1rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: 'Sora', sans-serif;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.15s;
  line-height: 1.5;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(88,166,255,0.06);
}

.option-btn.correct {
  border-color: var(--accent2);
  background: rgba(63,185,80,0.12);
  color: var(--accent2);
}

.option-btn.wrong {
  border-color: var(--danger);
  background: rgba(248,81,73,0.1);
  color: var(--danger);
}

.option-btn:disabled { cursor: default; }

.feedback-box {
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  border-radius: 8px;
  font-size: 0.87rem;
  line-height: 1.6;
  display: none;
}

.feedback-box.correct {
  background: rgba(63,185,80,0.1);
  border: 1px solid rgba(63,185,80,0.3);
  color: #7ee787;
  display: block;
}

.feedback-box.wrong {
  background: rgba(248,81,73,0.08);
  border: 1px solid rgba(248,81,73,0.3);
  color: #ffa198;
  display: block;
}

.nav-buttons {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

/* RESULTS */
#result-screen { display: none; text-align: center; }

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  margin: 1.5rem 0;
}

.score-big {
  font-family: 'JetBrains Mono', monospace;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.score-label { color: var(--text2); font-size: 0.85rem; margin-top: 0.4rem; }

.breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.breakdown-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.8rem;
}

.breakdown-item .bi-label { font-size: 0.72rem; color: var(--text2); font-family: 'JetBrains Mono', monospace; }
.breakdown-item .bi-val { font-size: 1.3rem; font-weight: 700; color: var(--text); margin-top: 0.3rem; }

.plan-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: left;
}

.plan-section h2 {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.day-block { margin-bottom: 1.2rem; }

.day-block h3 {
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.day-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.5rem;
  color: var(--warn);
}

.day-block ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.day-block ul li {
  font-size: 0.84rem;
  color: var(--text2);
  padding-left: 1rem;
  position: relative;
}

.day-block ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
}

.tip-box {
  background: rgba(88,166,255,0.06);
  border: 1px solid rgba(88,166,255,0.2);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  font-size: 0.83rem;
  color: var(--text2);
  margin-top: 1rem;
  line-height: 1.6;
}

.tip-box strong { color: var(--accent); }

/* ===== NAVIGATION ===== */
nav {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  padding: 1rem 0 0;
  align-items: center;
}

nav a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text2);
  text-decoration: none;
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface2);
  transition: all 0.2s;
}

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

/* Hjem – brighter border and white text to stand out */
nav a.nav-home {
  color: var(--text);
  border-color: var(--text2);
}
nav a.nav-home:hover,
nav a.nav-home.active {
  border-color: var(--text);
  color: var(--text);
  background: var(--surface);
}

/* Vertical separator between nav groups */
.nav-sep {
  display: block;
  width: 1px;
  height: 1rem;
  background: var(--border);
  flex-shrink: 0;
}

/* Teori group container */
.nav-group {
  display: flex;
  gap: 0.1rem;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 0.15rem 0.3rem;
  transition: border-color 0.2s;
}
.nav-group:has(.active) {
  border-color: rgba(88, 166, 255, 0.45);
}

/* All links inside the group – transparent, compact */
.nav-group a {
  background: transparent;
  border-color: transparent;
  padding: 0.2rem 0.6rem;
  font-size: 0.73rem;
}
.nav-group a:hover,
.nav-group a.active {
  background: transparent;
  border-color: transparent;
  color: var(--accent);
}

/* "Teori" parent label link */
.nav-group a.nav-group-parent {
  font-size: 0.78rem;
  color: var(--text);
  padding: 0.25rem 0.8rem;
  position: relative;
  margin-right: 0.2rem;
}
.nav-group a.nav-group-parent::after {
  content: '';
  position: absolute;
  right: -0.1rem;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border);
}
.nav-group a.nav-group-parent:hover,
.nav-group a.nav-group-parent.active {
  color: var(--accent);
}

.theory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.theory-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
  display: block;
}

.theory-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(88,166,255,0.1);
}

.theory-card .tc-icon { font-size: 1.8rem; margin-bottom: 0.6rem; }
.theory-card h3 { font-size: 1rem; margin-bottom: 0.3rem; }
.theory-card p { font-size: 0.78rem; color: var(--text2); line-height: 1.5; }

.theory-content { max-width: 780px; margin: 0 auto; }

.section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  margin-bottom: 1.2rem;
}

.section h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  color: var(--accent);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.section h3 {
  font-size: 0.9rem;
  color: var(--text);
  margin: 1rem 0 0.4rem;
}

.section p {
  font-size: 0.87rem;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 0.6rem;
}

.section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 0.6rem;
}

.section ul li {
  font-size: 0.85rem;
  color: var(--text2);
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.6;
}

.section ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
}

.section .code-block {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: #a5d6ff;
  margin: 0.8rem 0;
  white-space: pre;
  line-height: 1.7;
  overflow-x: auto;
}

.tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.tag-exam { background: rgba(210,153,34,0.15); border: 1px solid var(--warn); color: var(--warn); }
.tag-tip  { background: rgba(88,166,255,0.1);  border: 1px solid var(--accent); color: var(--accent); }
.tag-ok   { background: rgba(63,185,80,0.1);   border: 1px solid var(--accent2); color: var(--accent2); }

.callout {
  border-left: 3px solid var(--accent);
  padding: 0.7rem 1rem;
  background: rgba(88,166,255,0.05);
  border-radius: 0 6px 6px 0;
  font-size: 0.85rem;
  color: var(--text2);
  line-height: 1.6;
  margin: 0.8rem 0;
}

.callout.warn {
  border-color: var(--warn);
  background: rgba(210,153,34,0.05);
}

.callout strong { color: var(--text); }

.quiz-link-btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.6rem 1.2rem;
  background: var(--accent);
  color: #0d1117;
  font-family: 'Sora', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.2s;
}

.quiz-link-btn:hover { background: #79bcff; transform: translateY(-1px); }