/* Year 9 Game On — Term 2 Python Arcade Hub
 * Dark theme with Python blue + gold accents
 * Matches Term 1 y9-gameon visual identity
 */

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

:root {
  --bg: #0f0f23;
  --bg-card: #1a1a2e;
  --bg-card-hover: #252545;
  --border: #2a2a4a;
  --text: #e0e0e0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --py-blue: #3776ab;
  --py-gold: #ffd43b;
  --py-gold-soft: rgba(255, 212, 59, 0.15);
  --teal: #14b8a6;
  --green: #4ade80;
  --red: #f87171;
  --purple: #a78bfa;
  --navy: #1F3A68;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ========= Site Header ========= */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15, 15, 35, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 1.5rem;
}
.site-header-inner {
  max-width: 1000px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.site-brand {
  font-weight: 700; font-size: 1.05rem;
  background: linear-gradient(135deg, var(--py-blue), var(--py-gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  text-decoration: none;
}
.site-nav { display: flex; gap: 16px; flex-wrap: wrap; }
.site-nav a {
  color: var(--text-muted); text-decoration: none; font-size: 0.9rem;
  transition: color 0.2s;
}
.site-nav a:hover { color: var(--py-gold); }

/* ========= Typography ========= */
h1 {
  font-size: 2.2rem; margin-bottom: 0.5rem; line-height: 1.2;
  background: linear-gradient(135deg, var(--py-blue), var(--py-gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
h2 {
  font-size: 1.5rem; margin-top: 2rem; margin-bottom: 0.8rem;
  color: var(--py-gold);
  padding-bottom: 0.4rem; border-bottom: 1px solid var(--border);
}
h3 {
  font-size: 1.2rem; margin-top: 1.5rem; margin-bottom: 0.5rem;
  color: var(--text);
}
p { margin-bottom: 1rem; color: var(--text); }
.subtitle { color: var(--text-muted); font-size: 1rem; margin-bottom: 1.5rem; }
.meta-bar { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 1rem; }
.meta-bar span { margin-right: 1.2rem; }
.meta-bar strong { color: var(--text-muted); }

/* ========= Phases ========= */
.phase { margin-bottom: 2.5rem; }
.phase-title {
  font-size: 1.1rem; font-weight: 700;
  color: var(--py-gold);
  margin-bottom: 0.8rem; padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}
.phase.foundations .phase-title { color: var(--teal); }
.phase.pygame .phase-title { color: var(--py-blue); }
.phase.mechanics .phase-title { color: var(--purple); }
.phase.polish .phase-title { color: var(--py-gold); }

/* ========= Tutorial Grid ========= */
.tutorials {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.6rem;
}
.tutorial-link {
  display: block; padding: 0.9rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text); text-decoration: none;
  transition: all 0.2s;
}
.tutorial-link:hover {
  background: var(--bg-card-hover);
  border-color: var(--py-gold);
  transform: translateY(-2px);
}
.lesson-num { font-size: 0.75rem; color: var(--py-blue); font-weight: 600; }
.lesson-title { font-size: 0.95rem; margin-top: 0.2rem; font-weight: 500; }
.lesson-chip {
  display: inline-block; margin-top: 0.4rem; padding: 2px 8px;
  background: var(--py-gold-soft); color: var(--py-gold);
  border-radius: 4px; font-size: 0.7rem; font-weight: 600;
}

/* ========= Lesson Page ========= */
.lesson-page .segment {
  margin-bottom: 1.8rem;
  padding: 1.2rem 1.3rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.segment-header {
  display: flex; align-items: center; gap: 0.6rem;
  margin-bottom: 0.6rem;
}
.segment-minutes {
  display: inline-block; padding: 2px 10px;
  background: var(--py-gold-soft); color: var(--py-gold);
  border-radius: 12px; font-size: 0.75rem; font-weight: 700;
}
.segment h3 { margin-top: 0; color: var(--text); }

.segment.do-now { border-left: 3px solid var(--red); }
.segment.i-do { border-left: 3px solid var(--py-blue); }
.segment.we-do { border-left: 3px solid var(--teal); }
.segment.you-do { border-left: 3px solid var(--green); }
.segment.exit { border-left: 3px solid var(--py-gold); }

.intentions, .success {
  list-style: none; padding-left: 0;
}
.intentions li, .success li {
  padding: 6px 0; padding-left: 1.4rem; position: relative;
}
.intentions li::before {
  content: "🎯"; position: absolute; left: 0;
}
.success li::before {
  content: "✅"; position: absolute; left: 0;
}

/* ========= Differentiation ========= */
.diff-box {
  margin: 1rem 0;
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.6rem;
}
.diff-tier {
  padding: 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.diff-tier.support { border-top: 3px solid var(--teal); }
.diff-tier.core { border-top: 3px solid var(--py-blue); }
.diff-tier.extension { border-top: 3px solid var(--py-gold); }
.diff-tier h4 {
  margin: 0 0 0.5rem 0; font-size: 0.85rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.diff-tier.support h4 { color: var(--teal); }
.diff-tier.core h4 { color: var(--py-blue); }
.diff-tier.extension h4 { color: var(--py-gold); }
.diff-tier p { font-size: 0.88rem; margin: 0; color: var(--text-muted); }

/* ========= Code Blocks ========= */
pre {
  background: #0a0a1e;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  overflow-x: auto;
  margin: 1rem 0;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.85rem;
  line-height: 1.5;
}
code {
  font-family: 'Fira Code', 'Consolas', monospace;
  background: rgba(255, 212, 59, 0.1);
  color: var(--py-gold);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}
pre code { background: none; color: var(--text); padding: 0; }
.py-kw { color: #c678dd; }
.py-str { color: #98c379; }
.py-num { color: #d19a66; }
.py-cmt { color: #5c6370; font-style: italic; }
.py-fn { color: #61afef; }

/* ========= Journal + Callouts ========= */
.journal-callout, .twist-callout, .checkpoint-callout, .whs-callout {
  margin: 1.3rem 0;
  padding: 1rem 1.2rem;
  border-radius: 10px;
  border-left: 4px solid;
}
.journal-callout { background: rgba(255, 212, 59, 0.08); border-color: var(--py-gold); }
.journal-callout h4 { color: var(--py-gold); margin-top: 0; }
.twist-callout { background: rgba(167, 139, 250, 0.08); border-color: var(--purple); }
.twist-callout h4 { color: var(--purple); margin-top: 0; }
.checkpoint-callout { background: rgba(74, 222, 128, 0.08); border-color: var(--green); }
.checkpoint-callout h4 { color: var(--green); margin-top: 0; }
.whs-callout { background: rgba(248, 113, 113, 0.08); border-color: var(--red); }
.whs-callout h4 { color: var(--red); margin-top: 0; }

.callout-note { font-size: 0.88rem; color: var(--text-muted); }

/* ========= Nav Bottom ========= */
.prev-next {
  margin-top: 2.5rem; padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; gap: 1rem;
  flex-wrap: wrap;
}
.prev-next a {
  padding: 0.7rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text); text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.prev-next a:hover { background: var(--bg-card-hover); border-color: var(--py-gold); }
.prev-next a span { color: var(--text-dim); font-size: 0.75rem; display: block; }

/* ========= Resources ========= */
.resources { margin-top: 1rem; }
.resources ul { list-style: none; padding-left: 0; }
.resources li {
  padding: 6px 0; font-size: 0.9rem;
}
.resources a { color: var(--py-blue); text-decoration: none; }
.resources a:hover { color: var(--py-gold); text-decoration: underline; }

/* ========= Term Banner ========= */
.term-banner {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: linear-gradient(135deg, rgba(55, 118, 171, 0.15), rgba(255, 212, 59, 0.1));
  border-radius: 16px;
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}
.term-banner .driving-q {
  font-size: 1.1rem; color: var(--py-gold); font-style: italic; margin-top: 0.5rem;
}

.term-chooser {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center;
  margin-bottom: 2rem;
}
.term-chooser a {
  padding: 10px 22px; border-radius: 8px; text-decoration: none;
  font-weight: 600; font-size: 0.95rem;
  border: 1px solid var(--border); background: var(--bg-card);
  color: var(--text); transition: all 0.2s;
}
.term-chooser a:hover { border-color: var(--py-gold); transform: translateY(-1px); }
.term-chooser a.current {
  background: linear-gradient(135deg, var(--py-blue), var(--py-gold));
  color: var(--bg); border-color: transparent;
}

/* ========= Footer ========= */
.footer {
  text-align: center; margin-top: 3rem; padding: 2rem 0;
  color: var(--text-dim); font-size: 0.8rem;
  border-top: 1px solid var(--border);
}
.footer a { color: var(--text-muted); }

/* ========= Responsive ========= */
@media (max-width: 768px) {
  h1 { font-size: 1.7rem; }
  .container { padding: 1rem; }
  .diff-box { grid-template-columns: 1fr; }
  .tutorials { grid-template-columns: 1fr; }
}