/* ═══════════════════════════════════════════════════════════════════
   lecture-theme.css
   Shared styles for COMP 2243 reveal.js lecture slides.
   Include after reveal.js core CSS in every lecture file.
   ═══════════════════════════════════════════════════════════════════ */

:root {
  --bg: #0f1728;
  --bg-soft: #172033;
  --panel: #1a2438;
  --panel-soft: #223049;
  --line: #334765;
  --line-strong: #5c7aa7;
  --text: #f4f7fc;
  --muted: #bcc9df;
  --gold: #ffd84d;
  --cyan: #63f0ff;
  --rose: #ff6f91;
  --mint: #49e29c;
  --lavender: #95a8ff;
  --violet: #b794ff;
  --orange: #ff9f43;
}

/* ── Base ────────────────────────────────────────────────────────── */

.reveal {
  font-family: "Aptos", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(127, 231, 255, 0.12), transparent 26%),
    radial-gradient(circle at bottom left, rgba(255, 151, 172, 0.1), transparent 22%),
    linear-gradient(180deg, #0b1220 0%, #111a2c 100%);
}

.reveal .slides { text-align: left; }
.reveal section { box-sizing: border-box; }

.reveal .slides section:not(.part-slide) {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.015));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 0.72em 0.9em !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.035);
}

/* ── Typography ──────────────────────────────────────────────────── */

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4 {
  font-family: Georgia, "Times New Roman", serif;
  text-transform: none;
  letter-spacing: 0.01em;
  line-height: 1.06;
}

.reveal h1 {
  font-size: 1.7em;
  color: #f5c842 !important;
  margin: 0 0 0.16em;
  text-shadow: 0 2px 12px rgba(255, 200, 60, 0.18);
}

.reveal h2 {
  font-size: 1.18em;
  color: #7fd8e8 !important;
  margin: 0 0 0.22em;
  padding-bottom: 0.14em;
  border-bottom: 2px solid rgba(220, 100, 130, 0.6) !important;
}

.reveal h3 {
  font-size: 0.92em;
  color: #f0d890 !important;
  margin: 0 0 0.2em;
  padding: 0.14em 0.4em 0.14em 0.52em;
  border-left: 4px solid rgba(220, 100, 130, 0.65) !important;
  border-radius: 0 10px 10px 0;
  background: linear-gradient(90deg, rgba(255, 111, 145, 0.14), rgba(255, 159, 67, 0.06), transparent) !important;
}

.reveal p,
.reveal li,
.reveal td,
.reveal th,
.reveal blockquote {
  font-size: 0.71em;
  line-height: 1.35;
}

.reveal p { margin: 0.25em 0 0.5em; }

.reveal strong { color: #fff0ba; }
.reveal em     { color: #e4edff; }

/* ── Code ────────────────────────────────────────────────────────── */

.reveal code {
  font-family: Consolas, "Cascadia Code", monospace;
  font-size: 0.9em;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  padding: 0.08em 0.26em;
}

.reveal pre {
  width: 100%;
  margin: 0.35em 0;
  box-shadow: none;
}

.reveal pre code {
  max-height: 390px;
  padding: 0.95em 1em;
  border-radius: 14px;
  font-size: 0.76em;
  line-height: 1.46;
  background: linear-gradient(180deg, #0b111c 0%, #111927 100%);
  border: 1px solid #2a3952;
}

/* ── Tables ──────────────────────────────────────────────────────── */

.reveal table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.45em;
}

.reveal th {
  text-align: left;
  padding: 0.3em 0.55em;
  background: rgba(95, 135, 190, 0.28);
  border-bottom: 1px solid #5c7aa7;
  color: #eef6ff;
}

.reveal td {
  padding: 0.26em 0.55em;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  vertical-align: top;
}

.reveal tr:nth-child(even) td { background: rgba(255,255,255,0.025); }

/* ── Lists ───────────────────────────────────────────────────────── */

.reveal ul,
.reveal ol {
  margin: 0.16em 0 0.1em 1.02em;
  padding-left: 0.38em;
}

.reveal li { margin: 0.07em 0; }
.reveal ul li::marker { color: #63f0ff; }
.reveal ol li::marker { color: #ffd84d; font-weight: 700; }

.reveal ul li,
.reveal ol li {
  padding: 0.08em 0.3em 0.08em 0.36em;
  border-radius: 0 10px 10px 0;
}

.reveal ul li {
  background: linear-gradient(90deg, rgba(99, 240, 255, 0.13), rgba(149, 168, 255, 0.05), transparent) !important;
  border-left: 3px solid rgba(99, 240, 255, 0.6) !important;
}

.reveal ol li {
  background: linear-gradient(90deg, rgba(255, 216, 77, 0.13), rgba(255, 159, 67, 0.06), transparent) !important;
  border-left: 3px solid rgba(255, 200, 60, 0.6) !important;
}

/* ── Blockquote / HR ─────────────────────────────────────────────── */

.reveal blockquote {
  width: 100%;
  margin: 0.6em 0 0;
  padding: 0.54em 0.78em;
  background: rgba(96, 137, 199, 0.16);
  border-left: 5px solid #6faeff;
  border-radius: 0 12px 12px 0;
  color: #eef5ff;
}

.reveal hr {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin: 0.7em 0;
}

/* ── Part slides ─────────────────────────────────────────────────── */

.part-slide {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}

.part {
  width: min(100%, 36em);
  background:
    radial-gradient(circle at top right, rgba(255, 207, 112, 0.12), transparent 28%),
    linear-gradient(135deg, #182238 0%, #121a2c 100%);
  border: 1px solid rgba(127, 231, 255, 0.22);
  border-radius: 20px;
  padding: 0.9em 1em 0.82em;
  box-shadow: 0 18px 36px rgba(0,0,0,0.2);
  position: relative;
  overflow: hidden;
}

.part::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(90deg, #ff6f91, #ff9f43, #ffd84d, #63f0ff, #b794ff);
}

.part .kicker {
  display: inline-block;
  margin-bottom: 0.55em;
  padding: 0.14em 0.52em;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.09);
  color: #ffeab0;
  font-size: 0.57em;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.part h2 {
  margin-bottom: 0.08em;
  color: #ffd84d !important;
  border-bottom: none !important;
  padding-bottom: 0;
  font-size: 1.3em;
  text-shadow: 0 2px 14px rgba(255, 216, 77, 0.2);
}

.part .subtitle {
  color: var(--muted);
  font-size: 0.68em;
  line-height: 1.28;
  margin-top: 0.26em;
  max-width: 28em;
}

/* ── Grid layouts ────────────────────────────────────────────────── */

.hero-grid,
.cols-2,
.cols-3,
.term-grid {
  display: grid;
  gap: 0.65em;
  align-items: start;
}

.hero-grid  { grid-template-columns: 1fr 1fr; overflow: hidden; }
.cols-2     { grid-template-columns: 1fr 1fr; }
.cols-3     { grid-template-columns: repeat(3, 1fr); }
.term-grid  { grid-template-columns: repeat(auto-fill, minmax(11.4em, 1fr)); }

.hero-grid > *, .cols-2 > *, .cols-3 > * { min-width: 0; overflow: hidden; }
.hero-grid .part  { width: 100%; box-sizing: border-box; }
.hero-grid .part h1 { font-size: 1.15em; }

/* ── Cards ───────────────────────────────────────────────────────── */

.hero-panel {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 14px;
  padding: 0.72em 0.78em;
}

.card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 14px;
  padding: 0.62em 0.72em;
}

.mini-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 10px;
  padding: 0.38em 0.52em;
}

.card-title {
  font-size: 0.65em;
  font-weight: 700;
  color: #ffd84d;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 0.32em;
}

.term {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 12px;
  padding: 0.44em 0.52em;
  min-width: 0;
  overflow: hidden;
}

.term h4 {
  font-size: 0.7em;
  margin: 0 0 0.14em;
  color: #ffd84d;
}

.term p {
  font-size: 0.56em;
  line-height: 1.2;
  margin: 0;
}

/* ── Badges ──────────────────────────────────────────────────────── */

.badge-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4em;
  margin-top: 0.45em;
}

.badge {
  font-size: 0.56em;
  padding: 0.18em 0.52em;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: #d4e6ff;
}

/* ── Callout boxes ───────────────────────────────────────────────── */

.prompt-box {
  background: rgba(255, 216, 77, 0.07);
  border: 1px solid rgba(255, 216, 77, 0.3);
  border-radius: 12px;
  padding: 0.52em 0.72em;
  font-size: 0.66em;
  color: #fff8dd;
  margin-top: 0.5em;
}

.warn-box {
  background: rgba(255, 111, 145, 0.09);
  border: 1px solid rgba(255, 111, 145, 0.3);
  border-radius: 12px;
  padding: 0.52em 0.72em;
  font-size: 0.66em;
  color: #ffeef3;
  margin-top: 0.5em;
}

.good-box {
  background: rgba(73, 226, 156, 0.07);
  border: 1px solid rgba(73, 226, 156, 0.3);
  border-radius: 12px;
  padding: 0.52em 0.72em;
  font-size: 0.66em;
  color: #e0fff2;
  margin-top: 0.5em;
}

/* ── Monospace command display ───────────────────────────────────── */

.cmd {
  font-family: Consolas, "Cascadia Code", monospace;
  font-size: 0.64em;
  font-weight: 700;
  color: #63f0ff;
  background: rgba(99, 240, 255, 0.07);
  border: 1px solid rgba(99, 240, 255, 0.18);
  border-radius: 6px;
  padding: 0.06em 0.32em;
}

/* ── Mermaid diagrams ────────────────────────────────────────────── */

.mermaid-wrap {
  background: linear-gradient(135deg, rgba(26,36,56,0.9), rgba(18,26,44,0.95));
  border: 1px solid rgba(99,240,255,0.4);
  border-radius: 14px;
  padding: 0.7em;
  margin-top: 0.4em;
  overflow: hidden;
}

.mermaid-wrap .mermaid       { max-height: 260px; overflow: hidden; font-size: 0.9em; }
.mermaid-wrap.mermaid-large .mermaid { max-height: 380px; font-size: 0.82em; }

.mermaid svg {
  max-width: 100% !important;
  max-height: 210px !important;
  height: auto !important;
  width: auto !important;
}

.mermaid-large .mermaid svg { max-height: 350px !important; }

/* ── MVC layer color coding (Lecture 12+) ────────────────────────── */

.layer-model { border-left: 4px solid var(--mint)    !important; background: rgba(73,226,156,0.07)  !important; }
.layer-view  { border-left: 4px solid var(--lavender) !important; background: rgba(149,168,255,0.07) !important; }
.layer-ctrl  { border-left: 4px solid var(--orange)   !important; background: rgba(255,159,67,0.07)  !important; }

.mvc-label {
  font-size: 0.55em;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.2em;
}
.mvc-label.m { color: var(--mint); }
.mvc-label.v { color: var(--lavender); }
.mvc-label.c { color: var(--orange); }

/* ── Lecture 12 advanced extensions slide ───────────────────────── */

.advanced-extensions h3 {
  margin-bottom: 0.25em;
}

.advanced-extensions > p {
  font-size: 0.66em !important;
  margin-bottom: 0.32em !important;
  line-height: 1.25;
}

.advanced-extensions .cols-2 {
  gap: 0.42em;
}

.advanced-extensions .card {
  padding: 0.45em 0.58em;
}

.advanced-extensions .card-title {
  margin-bottom: 0.2em;
  font-size: 0.58em;
}

.advanced-extensions .card p {
  font-size: 0.59em;
  line-height: 1.22;
}

.advanced-extensions .warn-box {
  margin-top: 0.28em !important;
  padding: 0.42em 0.6em;
  font-size: 0.6em;
  line-height: 1.2;
}

/* ── Utilities ───────────────────────────────────────────────────── */

.small { font-size: 0.78em; }
.muted { color: #bcc9df; }