/* ======================================================
   TECHIN 510 – Shared Dark Botanical Theme
   ====================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0f0a;
  --bg-card: rgba(18, 26, 18, 0.85);
  --fg: #e8e4dd;
  --fg-dim: rgba(232, 228, 221, 0.55);
  --fg-muted: rgba(232, 228, 221, 0.35);
  --gold: #c1a778;
  --gold-bright: #d4be8e;
  --gold-dim: rgba(193, 167, 120, 0.25);
  --green-dark: rgba(34, 60, 34, 0.35);
  --red-soft: #c45c5c;
  --green-soft: #7dab6e;
  --code-bg: rgba(0, 0, 0, 0.45);
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;
  --slide-pad: clamp(2.5rem, 6vw, 5rem);
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
}

/* --- Typography --- */
.overline {
  font-family: var(--font-sans);
  font-size: clamp(0.6rem, 1.1vw, 0.8rem);
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: clamp(0.6rem, 1.5vh, 1.2rem);
}

.accent-line {
  width: clamp(40px, 8vw, 90px);
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
  margin-bottom: clamp(0.8rem, 2vh, 1.5rem);
}

h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  color: #f5f0e8;
  margin-bottom: clamp(0.5rem, 1.5vh, 1rem);
}

h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  color: #f5f0e8;
  margin-bottom: clamp(0.5rem, 1.5vh, 1rem);
}

.subtitle {
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 2.2vw, 1.6rem);
  font-weight: 400;
  font-style: italic;
  color: var(--gold);
  margin-bottom: clamp(0.8rem, 2vh, 1.5rem);
}

.meta-line {
  font-size: clamp(0.6rem, 1vw, 0.75rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--fg-dim);
  text-transform: uppercase;
}

p,
li {
  font-size: clamp(0.85rem, 1.6vw, 1.15rem);
  line-height: 1.65;
  color: var(--fg);
}

/* --- Content Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid rgba(193, 167, 120, 0.1);
  border-radius: 4px;
  padding: clamp(1rem, 2.5vw, 2rem);
  margin-bottom: clamp(0.5rem, 1vh, 0.8rem);
}

/* --- Lists --- */
ul,
ol {
  padding-left: 1.2em;
  margin-bottom: clamp(0.5rem, 1vh, 0.8rem);
}

li {
  margin-bottom: 0.35em;
}

li::marker {
  color: var(--gold);
}

/* --- Code Blocks --- */
pre {
  background: var(--code-bg);
  border: 1px solid rgba(193, 167, 120, 0.12);
  border-radius: 4px;
  padding: clamp(0.8rem, 2vw, 1.5rem);
  overflow-x: auto;
  margin: clamp(0.5rem, 1.5vh, 1rem) 0;
}

code {
  font-family: var(--font-mono);
  font-size: clamp(0.65rem, 1.2vw, 0.9rem);
  line-height: 1.6;
  color: #c8d6c0;
}

.inline-code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(0, 0, 0, 0.35);
  padding: 0.15em 0.45em;
  border-radius: 3px;
  color: var(--gold-bright);
}

/* --- Quote Blocks --- */
.quote-block {
  border-left: 3px solid var(--gold);
  padding-left: clamp(1rem, 2.5vw, 2rem);
  margin: clamp(0.5rem, 2vh, 1.5rem) 0;
}

.quote-block p {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2.2vw, 1.6rem);
  font-style: italic;
  line-height: 1.55;
  color: #f5f0e8;
}

.quote-attr {
  font-family: var(--font-sans);
  font-size: clamp(0.65rem, 1vw, 0.8rem);
  color: var(--fg-dim);
  margin-top: 0.6rem;
  font-style: normal;
}

/* --- Two-Column Layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1rem, 2.5vw, 2rem);
  width: 100%;
}

@media (max-width: 700px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

.col-label {
  font-family: var(--font-sans);
  font-size: clamp(0.6rem, 1vw, 0.75rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.col-label.bad {
  color: var(--red-soft);
}

.col-label.good {
  color: var(--green-soft);
}

/* --- Diagram Styles --- */
.diagram {
  width: 100%;
  max-width: 900px;
  margin: clamp(0.5rem, 2vh, 1.5rem) auto;
}

.diagram svg {
  width: 100%;
  height: auto;
}

/* --- Dots Decoration --- */
.dots {
  display: flex;
  gap: 8px;
  margin-bottom: clamp(0.6rem, 1.5vh, 1rem);
}

.dots span {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.5;
}

/* --- Highlight Box --- */
.highlight-box {
  background: linear-gradient(135deg, rgba(193, 167, 120, 0.1), rgba(193, 167, 120, 0.04));
  border: 1px solid rgba(193, 167, 120, 0.2);
  border-radius: 4px;
  padding: clamp(1rem, 2vw, 1.5rem);
  margin: clamp(0.5rem, 1.5vh, 1rem) 0;
}

/* --- Number Feature --- */
.num-feature {
  display: flex;
  gap: clamp(0.8rem, 1.5vw, 1.2rem);
  align-items: flex-start;
  margin-bottom: clamp(0.6rem, 1.2vh, 0.9rem);
}

.num-circle {
  flex-shrink: 0;
  width: clamp(28px, 3vw, 38px);
  height: clamp(28px, 3vw, 38px);
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: clamp(0.75rem, 1.3vw, 1rem);
  font-weight: 600;
  color: var(--gold);
}

.num-text strong {
  display: block;
  font-size: clamp(0.8rem, 1.4vw, 1.05rem);
  color: #f5f0e8;
  margin-bottom: 0.15rem;
}

.num-text span {
  font-size: clamp(0.7rem, 1.2vw, 0.9rem);
  color: var(--fg-dim);
  line-height: 1.45;
}

/* --- Keyboard Shortcut Tag --- */
.kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78em;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  padding: 0.1em 0.45em;
  color: var(--gold-bright);
  vertical-align: baseline;
}

/* --- Tables (from Week 2) --- */
.slide-table {
  width: 100%;
  border-collapse: collapse;
  margin: clamp(0.5rem, 1.5vh, 1rem) 0;
}

.slide-table th {
  font-family: var(--font-sans);
  font-size: clamp(0.6rem, 1vw, 0.75rem);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  text-align: left;
  padding: clamp(0.4rem, 1vw, 0.7rem) clamp(0.5rem, 1.2vw, 1rem);
  border-bottom: 1px solid rgba(193, 167, 120, 0.2);
}

.slide-table td {
  font-size: clamp(0.7rem, 1.2vw, 0.9rem);
  color: var(--fg);
  padding: clamp(0.4rem, 1vw, 0.7rem) clamp(0.5rem, 1.2vw, 1rem);
  border-bottom: 1px solid rgba(193, 167, 120, 0.06);
  line-height: 1.45;
}

.slide-table td:first-child {
  color: var(--gold-bright);
  font-weight: 500;
  white-space: nowrap;
}

/* --- Checklist (from Week 2) --- */
.checklist {
  list-style: none;
  padding-left: 0;
}

.checklist li {
  position: relative;
  padding-left: 1.6em;
  margin-bottom: 0.5em;
  font-size: clamp(0.8rem, 1.4vw, 1.05rem);
}

.checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.3em;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--gold);
  border-radius: 2px;
}

/* --- Comparison Table (from Week 5) --- */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: clamp(0.5rem, 1.5vh, 1rem) 0;
}

.compare-table th,
.compare-table td {
  padding: clamp(0.4rem, 1vw, 0.8rem) clamp(0.6rem, 1.5vw, 1.2rem);
  text-align: left;
  border-bottom: 1px solid rgba(193, 167, 120, 0.1);
  font-size: clamp(0.7rem, 1.2vw, 0.9rem);
}

.compare-table th {
  color: var(--gold);
  font-weight: 600;
  font-size: clamp(0.6rem, 1vw, 0.75rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.compare-table td {
  color: var(--fg);
}

.compare-table code {
  font-size: clamp(0.6rem, 1.1vw, 0.82rem);
}

/* --- Timeline (from Week 8) --- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: clamp(0.3rem, 0.6vh, 0.5rem);
  margin: clamp(0.5rem, 1.5vh, 1rem) 0;
}

.timeline-item {
  display: flex;
  align-items: center;
  gap: clamp(0.6rem, 1.2vw, 1rem);
}

.timeline-week {
  flex-shrink: 0;
  width: clamp(36px, 4vw, 48px);
  font-family: var(--font-mono);
  font-size: clamp(0.6rem, 1vw, 0.75rem);
  font-weight: 500;
  color: var(--gold);
  text-align: right;
}

.timeline-dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.5;
}

.timeline-dot.active {
  opacity: 1;
  box-shadow: 0 0 8px rgba(193, 167, 120, 0.4);
}

.timeline-desc {
  font-size: clamp(0.7rem, 1.2vw, 0.9rem);
  color: var(--fg-dim);
  line-height: 1.4;
}

/* === Responsive === */
@media (max-height: 700px) {
  h1 {
    font-size: clamp(1.6rem, 4.5vw, 3rem);
  }

  h2 {
    font-size: clamp(1.3rem, 3vw, 2.2rem);
  }
}

@media (max-height: 600px) {
  h1 {
    font-size: clamp(1.4rem, 4vw, 2.5rem);
  }

  h2 {
    font-size: clamp(1.1rem, 2.5vw, 1.8rem);
  }

  p,
  li {
    font-size: clamp(0.75rem, 1.4vw, 1rem);
  }

  pre {
    padding: clamp(0.5rem, 1.5vw, 1rem);
  }

  code {
    font-size: clamp(0.6rem, 1.1vw, 0.8rem);
  }
}

@media (max-height: 500px) {
  .dots,
  .accent-line {
    display: none;
  }
}

/* === Light Theme === */
[data-theme="light"] {
  --bg: #f5f2eb;
  --bg-card: rgba(255, 255, 255, 0.85);
  --fg: #2a2a2a;
  --fg-dim: rgba(42, 42, 42, 0.6);
  --fg-muted: rgba(42, 42, 42, 0.35);
  --gold: #9a7d4e;
  --gold-bright: #7a6030;
  --gold-dim: rgba(154, 125, 78, 0.2);
  --green-dark: rgba(200, 220, 200, 0.35);
  --red-soft: #b34040;
  --green-soft: #4a8a3a;
  --code-bg: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] body {
  background: var(--bg);
  color: var(--fg);
}

[data-theme="light"] h1,
[data-theme="light"] h2 {
  color: #1a1a1a;
}

[data-theme="light"] code {
  color: #3a5a30;
}

[data-theme="light"] .inline-code {
  background: rgba(0, 0, 0, 0.07);
  color: var(--gold-bright);
}

[data-theme="light"] .quote-block p {
  color: #1a1a1a;
}

[data-theme="light"] .card {
  border-color: rgba(154, 125, 78, 0.15);
}

[data-theme="light"] pre {
  border-color: rgba(154, 125, 78, 0.15);
}

[data-theme="light"] .kbd {
  background: rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.12);
  color: var(--gold-bright);
}

[data-theme="light"] .highlight-box {
  background: linear-gradient(135deg, rgba(154, 125, 78, 0.08), rgba(154, 125, 78, 0.03));
  border-color: rgba(154, 125, 78, 0.2);
}

[data-theme="light"] .num-text strong {
  color: #1a1a1a;
}

/* === Light Theme SVG Diagram Contrast Fix ===
   Many slide diagrams embed hard-coded SVG colors (fill/stroke) tuned for the dark theme.
   These overrides remap the known palette values to light-theme variables so text stays readable. */
[data-theme="light"] .slide svg text[fill="#e8e4dd"] {
  fill: var(--fg) !important;
}

[data-theme="light"] .slide svg *[stroke="#c1a778"] {
  stroke: var(--gold) !important;
}

[data-theme="light"] .slide svg *[fill="#c1a778"] {
  fill: var(--gold) !important;
}

[data-theme="light"] .slide svg text[fill="#c8d6c0"] {
  fill: var(--green-soft) !important;
}

[data-theme="light"] .slide svg text[fill="#7dab6e"] {
  fill: var(--green-soft) !important;
}

[data-theme="light"] .slide svg *[fill="#c45c5c"] {
  fill: var(--red-soft) !important;
}

[data-theme="light"] .slide svg *[stroke="#c45c5c"] {
  stroke: var(--red-soft) !important;
}

/* === Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}