/* ============================================================
   ADITHYA MD — SITE THEME ("The Workbench")
   Illustrated, warm, technical. All colors live here.
   ============================================================ */

:root {
  --bg: #fdf9f3;
  --bg-soft: #f2ead9;
  --ink: #241f18;
  --body: #57503f;
  --muted: #8a8172;
  --accent: #b5541c;
  --accent-soft: rgba(181, 84, 28, 0.08);
  --green: #0a7d52;
  --green-bright: #3fae7d;
  --border: #ece4d6;
  --border-strong: #d8cdb8;

  --display: 'Space Grotesk', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Source Sans 3', system-ui, sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--body);
  line-height: 1.75;
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #8f3f12; }

/* ── NAV ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(253, 249, 243, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  letter-spacing: -0.01em;
  text-decoration: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: lowercase;
  color: var(--muted);
}
.nav-links a:hover { color: var(--accent); }

/* ── HERO ── */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem 0.5rem;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 2.3rem;
  line-height: 1.12;
  color: var(--ink);
  letter-spacing: -0.025em;
  margin-bottom: 0.6rem;
}
.hero .hero-sub {
  font-size: 1.02rem;
  color: var(--body);
  max-width: 620px;
}

/* ── SCENE ── */
.scene-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.5rem 1rem 0;
}
.scene-wrap svg { display: block; width: 100%; height: auto; }
.scene-hint {
  text-align: center;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  padding: 0.2rem 0 0;
}

.scene-caption {
  text-align: center;
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--ink);
  height: 1.6rem;
  position: relative;
}
.scene-caption span {
  position: absolute;
  left: 0;
  right: 0;
  opacity: 0;
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes blink { 0%, 93%, 100% { transform: scaleY(1); } 95% { transform: scaleY(0.05); } }
  @keyframes breathe { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-2.5px); } }
  @keyframes typeL { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(3px); } }
  @keyframes typeR { 0%, 100% { transform: translateY(3px); } 50% { transform: translateY(0); } }
  @keyframes tline { 0% { opacity: 0; } 6% { opacity: 1; } 72% { opacity: 1; } 80%, 100% { opacity: 0; } }
  @keyframes cursorb { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
  @keyframes led { 0%, 45%, 100% { opacity: 0.25; } 50%, 60% { opacity: 1; } }
  @keyframes smoke { 0% { transform: translate(0, 0); opacity: 0.5; } 60% { opacity: 0.25; } 100% { transform: translate(6px, -30px); opacity: 0; } }
  @keyframes steam { 0% { transform: translate(0, 0); opacity: 0.45; } 100% { transform: translate(-4px, -20px); opacity: 0; } }
  @keyframes sway { 0%, 100% { transform: rotate(-2.5deg); } 50% { transform: rotate(2.5deg); } }
  @keyframes phA { 0%, 28% { opacity: 1; } 32%, 96% { opacity: 0; } 100% { opacity: 1; } }
  @keyframes phB { 0%, 28% { opacity: 0; } 32%, 62% { opacity: 1; } 66%, 100% { opacity: 0; } }
  @keyframes phC { 0%, 62% { opacity: 0; } 66%, 96% { opacity: 1; } 100% { opacity: 0; } }
  @keyframes writehand { 0%, 100% { transform: translate(0, 0); } 25% { transform: translate(4px, -3px); } 50% { transform: translate(8px, 0); } 75% { transform: translate(4px, 3px); } }
  @keyframes chalkgrow { 0%, 20% { transform: scaleX(0); } 26% { transform: scaleX(1); } 100% { transform: scaleX(1); } }
  @keyframes reveal { 0% { clip-path: inset(0 100% 0 0); } 20% { clip-path: inset(0 0% 0 0); } 100% { clip-path: inset(0 0% 0 0); } }
  @keyframes ironwork { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(-4px, 3px); } }
  @keyframes spark { 0%, 100% { opacity: 0; } 8%, 14% { opacity: 1; } 20% { opacity: 0; } }
  @keyframes bob2 { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-2px); } }

  .an-eyes { animation: blink 4.6s infinite; transform-box: fill-box; transform-origin: center; }
  .an-breathe { animation: breathe 3.4s ease-in-out infinite; }
  .an-bob { animation: bob2 2.8s ease-in-out infinite; }
  .an-hl { animation: typeL 0.44s ease-in-out infinite; }
  .an-hr { animation: typeR 0.44s ease-in-out infinite; }
  .an-t1 { animation: tline 5.6s infinite; }
  .an-t2 { animation: tline 5.6s infinite 0.8s; }
  .an-t3 { animation: tline 5.6s infinite 1.6s; }
  .an-t4 { animation: tline 5.6s infinite 2.4s; }
  .an-cur { animation: cursorb 1s steps(1) infinite; }
  .an-led1 { animation: led 2.4s infinite; }
  .an-led2 { animation: led 2.4s infinite 0.6s; }
  .an-led3 { animation: led 2.4s infinite 1.2s; }
  .an-sm1 { animation: smoke 2.6s ease-out infinite; }
  .an-sm2 { animation: smoke 2.6s ease-out infinite 1.3s; }
  .an-st1 { animation: steam 2.2s ease-out infinite; }
  .an-st2 { animation: steam 2.2s ease-out infinite 1.1s; }
  .an-sway { animation: sway 5s ease-in-out infinite; transform-box: fill-box; transform-origin: 50% 100%; }
  .ph-teach { animation: phA 21s infinite; }
  .ph-compute { animation: phB 21s infinite; }
  .ph-build { animation: phC 21s infinite; }
  .an-write { animation: writehand 0.7s ease-in-out infinite; }
  .an-chalkgrow { animation: chalkgrow 21s linear infinite; transform-box: fill-box; transform-origin: 0% 50%; }
  .an-reveal { animation: reveal 21s linear infinite; }
  .an-iron { animation: ironwork 0.8s ease-in-out infinite; }
  @keyframes mval { 0%, 22% { opacity: 1; } 25%, 97% { opacity: 0; } 100% { opacity: 1; } }
  .an-mv1 { animation: mval 8s infinite; }
  .an-mv2 { animation: mval 8s infinite 2s; }
  .an-mv3 { animation: mval 8s infinite 4s; }
  .an-mv4 { animation: mval 8s infinite 6s; }
  .an-spark1 { animation: spark 1.1s infinite; }
  .an-spark2 { animation: spark 1.1s infinite 0.4s; }
  .an-spark3 { animation: spark 1.1s infinite 0.7s; }
}

/* ── BELOW-SCENE LAYOUT ── */
.home-grid {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.2rem 2rem 3.5rem;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}
.about-site .label,
.interests .label {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.7rem;
}
.about-site p { margin-bottom: 0.9rem; font-size: 1.02rem; }
.about-site strong { color: var(--ink); font-weight: 600; }
.about-site a strong { color: var(--accent); }
.about-site a:hover strong { color: #8f3f12; }
.site-parts {
  list-style: none;
  margin-bottom: 0.9rem;
}
.site-parts li {
  padding: 0.28rem 0;
  font-size: 1.02rem;
}
.ai-note {
  font-size: 0.93rem;
  color: #6b5d43;
  background: #f6efe2;
  border-left: 3px solid #d9a441;
  padding: 0.8rem 1rem;
  margin-top: 1.2rem;
}
.say-hello {
  border-top: 1px dashed var(--border-strong);
  padding-top: 0.9rem;
  margin-top: 1.2rem;
}
.interests {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem 1.5rem;
}
.interests ul { list-style: none; }
.interests li {
  font-size: 0.97rem;
  color: var(--ink);
  padding: 0.32rem 0;
  line-height: 1.5;
}
.interests li::before {
  content: '\2192\00a0\00a0';
  font-family: var(--mono);
  color: var(--accent);
}
@media (max-width: 820px) {
  .home-grid { grid-template-columns: 1fr; gap: 1.8rem; }
}

/* ── ABOUT PAGE ── */
.about-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem 1rem;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 3rem;
  align-items: start;
}
.about-wrap h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 2.1rem;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 1.2rem;
}
.about-wrap p { margin-bottom: 1rem; font-size: 1.02rem; }
.about-wrap h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 2.2rem 0 0.8rem;
}
.about-wrap .subtitle {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.6rem;
}
.about-wrap ul { margin: 0 0 1rem 1.2rem; }
.about-wrap li { margin-bottom: 0.3rem; font-size: 1.02rem; }
.about-tagline {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 2rem;
}
.about-avatar { padding-top: 0.6rem; }
.about-avatar svg { display: block; width: 100%; height: auto; }
.about-logos {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 2rem 3.5rem;
}
.about-logos .label {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 1.2rem;
}
.logo-row {
  display: flex;
  align-items: center;
  gap: 2.4rem;
  flex-wrap: wrap;
}
.logo-row img {
  height: 34px;
  width: auto;
  opacity: 0.55;
  filter: grayscale(1);
  transition: opacity 0.25s, filter 0.25s;
}
.logo-row img:hover { opacity: 1; filter: grayscale(0); }
@media (max-width: 820px) {
  .about-wrap { grid-template-columns: 1fr; }
  .about-avatar { max-width: 200px; margin: 0 auto; order: -1; }
}

/* ── CULTI7 PAGE ── */
.story-wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem 3rem;
}
.page-hero {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 2rem 0.5rem;
  display: grid;
  grid-template-columns: 1fr 130px;
  gap: 2rem;
  align-items: center;
}
.page-hero h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 2.1rem;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 0.4rem;
}
.page-hero .subtitle {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}
.hero-device svg { display: block; width: 100%; height: auto; }

.kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.story {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 2.8rem;
  align-items: start;
  margin: 3rem 0;
}
.story.flip { grid-template-columns: 300px minmax(0, 1fr); }
.story.flip > figure { order: -1; }
.story.solo { grid-template-columns: minmax(0, 1fr); max-width: 680px; }
.story h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0 0 0.8rem;
}
.story p { margin-bottom: 1rem; font-size: 1.02rem; }
.story ul { margin: 0 0 1rem 1.2rem; }
.story li { margin-bottom: 0.35rem; font-size: 1.01rem; }
.story figure { margin: 0; }
.story img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
}
.story figcaption {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  padding-top: 0.5rem;
}
.pull {
  border-left: 3px solid var(--accent);
  padding: 0.2rem 0 0.2rem 1.1rem;
  margin: 1.4rem 0 0.4rem;
  font-size: 1.05rem;
  color: var(--ink);
}
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin: 0 0 1.6rem;
}
.stat {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.2rem;
  text-align: center;
}
.stat .num {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.9rem;
  color: var(--accent);
}
.stat .cap {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.2rem;
}
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; margin: 1.6rem 0; }
.step {
  border-top: 2px solid var(--accent);
  padding: 0.9rem 0.2rem 0;
}
.step .n { font-family: var(--mono); font-size: 0.75rem; color: var(--accent); }
.step h3 { font-family: var(--display); font-size: 1.05rem; color: var(--ink); margin: 0.2rem 0 0.3rem; }
.step p { font-size: 0.92rem; margin: 0; }
.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 1rem 0;
}
.video-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.team { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin: 1.4rem 0; }
.team-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.2rem 1.3rem;
}
.team-card h3 { font-family: var(--display); font-size: 1.05rem; color: var(--ink); }
.team-card .role { font-family: var(--mono); font-size: 0.72rem; color: var(--accent); margin: 0.15rem 0 0.5rem; }
.team-card p { font-size: 0.93rem; margin: 0; }
.team-card ul { list-style: none; margin: 0.5rem 0 0; display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; padding: 0; }
.team-card li { font-size: 0.9rem; margin: 0; }
.cta-row { display: flex; gap: 1rem; flex-wrap: wrap; margin: 1.2rem 0 0.6rem; }
.btn {
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  border: 1.5px solid var(--accent);
}
.btn.solid { background: var(--accent); color: #fff; }
.btn.solid:hover { background: #8f3f12; color: #fff; }
@media (max-width: 820px) {
  .page-hero { grid-template-columns: 1fr 100px; }
  .story, .story.flip { grid-template-columns: 1fr; gap: 1.4rem; margin: 2.2rem 0; }
  .story.flip > figure { order: 0; }
  .story figure { max-width: 420px; }
  .stats-row, .steps { grid-template-columns: 1fr; }
  .team { grid-template-columns: 1fr; }
}

/* ── PROJECTS INDEX ── */
.proj-list {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 2rem 3.5rem;
  display: grid;
  gap: 1.4rem;
}
.proj-card {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 1.6rem;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.6rem 1.8rem;
  color: var(--body);
  transition: transform 0.22s ease, border-color 0.22s ease;
}
.proj-card:hover { transform: translateY(-4px); border-color: var(--accent); color: var(--body); }
.proj-icon svg { display: block; width: 100%; height: auto; }
.proj-status {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green);
}
.proj-card h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0.25rem 0 0.15rem;
}
.proj-dek {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--accent);
  margin-bottom: 0.6rem;
}
.proj-card p.summary { font-size: 0.98rem; margin-bottom: 0.8rem; }
.proj-tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.proj-tags span {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.15rem 0.5rem;
}
.proj-board {
  float: right;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
}
.proj-cta {
  display: inline-block;
  margin-top: 0.9rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
}
.proj-cta::after {
  content: ' \2192';
  display: inline-block;
  transition: transform 0.2s ease;
}
.proj-card:hover .proj-cta::after { transform: translateX(5px); }
.proj-strip {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.proj-card.coming {
  border-style: dashed;
  background: transparent;
}
.proj-card.coming:hover { transform: none; border-color: var(--border-strong); }
.proj-card.coming h2 { color: var(--muted); }
@media (max-width: 700px) {
  .proj-card { grid-template-columns: 1fr; }
  .proj-icon { max-width: 80px; }
}

/* ── PROJECT ARTICLE ── */
@media (prefers-reduced-motion: no-preference) {
  @keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
  .anim-rise { animation: rise 0.6s ease both; }
  .delay-1 { animation-delay: 0.05s; }
  .delay-2 { animation-delay: 0.12s; }
  .delay-3 { animation-delay: 0.2s; }
}
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.2rem 2rem 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  display: flex;
  gap: 0.6rem;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }
.article-hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.2rem 2rem 0;
  display: block;
}
.hero-chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green);
  border: 1px solid var(--green-bright);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  margin-bottom: 0.8rem;
}
.article-hero h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.35rem;
}
.hero-subtitle {
  display: block;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 1rem;
}
.article-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 0.9rem; align-items: center; }
.article-meta span { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }
.article-meta .tag {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.12rem 0.5rem;
  color: var(--body);
}
.article-body {
  max-width: 780px;
  margin: 0 auto;
  padding: 1.6rem 2rem 3.5rem;
  display: block;
}
.article-body p { margin-bottom: 1rem; font-size: 1.01rem; }
.article-body h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 2.6rem 0 0.9rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
}
.article-body h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.12rem;
  color: var(--ink);
  margin: 1.8rem 0 0.6rem;
}
.article-body h4 { font-family: var(--display); font-size: 1rem; color: var(--ink); margin: 0.2rem 0 0.5rem; }
.article-body ul, .article-body ol { margin: 0 0 1rem 1.3rem; }
.article-body li { margin-bottom: 0.35rem; }
.article-body code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.08em 0.35em;
}
.article-body pre {
  background: #241f18;
  color: #e8e2d2;
  border-radius: 10px;
  padding: 1.1rem 1.3rem;
  overflow-x: auto;
  margin: 1.2rem 0;
  font-size: 0.85rem;
  line-height: 1.6;
}
.article-body pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }
.callout {
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  margin: 1.3rem 0;
  font-size: 0.95rem;
}
.callout.note { background: #f6efe2; border-left: 3px solid #d9a441; color: #6b5d43; }
.callout.finding { background: #edf5ef; border-left: 3px solid var(--green); color: #3c5a48; }
.callout.warning { background: #f7ebe6; border-left: 3px solid #a83c2c; color: #6e4638; }
.toc {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.2rem 1.4rem;
  margin: 1.4rem 0 2rem;
}
.toc-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.6rem;
}
.toc ol { margin: 0 0 0 1.2rem; }
.toc li { margin-bottom: 0.3rem; font-size: 0.95rem; }
.toc a { color: var(--body); }
.toc a:hover { color: var(--accent); }
.hw-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 2rem;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.6rem 1.3rem;
  margin: 1.3rem 0;
}
.hw-item {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed var(--border);
}
.hw-item:nth-last-child(-n+2) { border-bottom: 0; }
.hw-key { font-family: var(--mono); font-size: 0.78rem; color: var(--muted); }
.hw-val { font-family: var(--mono); font-size: 0.8rem; color: var(--ink); text-align: right; }
.explainer {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.3rem;
  margin: 1.3rem 0;
}
.explainer-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.explainer p:last-child { margin-bottom: 0; }
.impl-block {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin: 1.3rem 0;
  overflow: hidden;
}
.impl-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  padding: 0.7rem 1.2rem;
}
.impl-num { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); }
.impl-title { font-family: var(--display); font-weight: 700; font-size: 1rem; color: var(--ink); flex: 1; }
.impl-flag {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1rem 0.45rem;
}
.impl-body { padding: 1rem 1.2rem 0.2rem; }
.finding-block {
  border-left: 3px solid var(--accent);
  padding: 0.2rem 0 0.2rem 1.2rem;
  margin: 1.6rem 0;
}
.finding-num {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.finding-block h3 { margin-top: 0.25rem; }
.chart-wrap {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.2rem 1.4rem;
  margin: 1.3rem 0;
}
.chart-title {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 1.1rem;
}
.bar-chart { display: flex; flex-direction: column; gap: 0.6rem; }
.bar-row { display: flex; align-items: center; gap: 1rem; }
.bar-label { font-family: var(--mono); font-size: 0.78rem; color: var(--body); width: 110px; flex-shrink: 0; text-align: right; }
.bar-track { flex: 1; height: 26px; background: var(--bg-soft); border-radius: 6px; overflow: hidden; }
.bar-fill {
  height: 100%;
  border-radius: 6px;
  display: flex;
  align-items: center;
  padding-left: 0.7rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: #fff;
  min-width: fit-content;
}
.bar-fill.naive { background: #8a8172; }
.bar-fill.opt { background: #2e5a7d; }
.bar-fill.tiled { background: #b5541c; }
.bar-fill.simd { background: #0a7d52; }
.table-wrap { overflow-x: auto; margin: 1.3rem 0; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-size: 0.88rem;
}
.article-body th {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-align: left;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}
.article-body td {
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.82rem;
}
.article-body tr:last-child td { border-bottom: 0; }
.github-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #241f18;
  color: #e8e2d2;
  border-radius: 12px;
  padding: 1rem 1.3rem;
  margin: 1.6rem 0 1rem;
  transition: transform 0.2s ease;
}
.github-bar:hover { transform: translateY(-3px); color: #fff; }
.github-bar-text { display: flex; flex-direction: column; flex: 1; }
.github-bar-text span:first-child { font-family: var(--display); font-weight: 700; font-size: 0.98rem; }
.github-bar-text span:last-child { font-family: var(--mono); font-size: 0.75rem; color: #a89f8d; }
.github-bar-arrow { font-size: 1.2rem; color: var(--green-bright); }
@media (max-width: 700px) {
  .hw-grid { grid-template-columns: 1fr; }
  .hw-item:nth-last-child(-n+2) { border-bottom: 1px dashed var(--border); }
  .hw-item:last-child { border-bottom: 0; }
  .bar-label { width: 80px; font-size: 0.7rem; }
}

/* ── ARTICLE TEMPLATE v2 ── */
.article-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 3.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 250px;
  grid-template-areas: "body toc";
  gap: 3.5rem;
  align-items: start;
}
.article-grid .article-body {
  grid-area: body;
  max-width: 760px;
  padding: 1.6rem 0 0;
  margin: 0;
}
.side-toc { grid-area: toc; position: sticky; top: 92px; padding-top: 1.6rem; }
.side-toc .toc { margin: 0; }
.article-body { counter-reset: sec; }
.article-body h2::before {
  counter-increment: sec;
  content: counter(sec, decimal-leading-zero);
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.35rem;
}
@media (max-width: 1080px) {
  .article-grid { grid-template-columns: 1fr; grid-template-areas: "toc" "body"; gap: 0; }
  .side-toc { position: static; padding-top: 1.6rem; }
}

/* figures */
.fig {
  margin: 1.5rem 0;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.2rem 0.9rem;
}
.fig svg { display: block; width: 100%; height: auto; }
.fig figcaption {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  padding-top: 0.6rem;
}

/* probe labels */
.plabel {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin: 1.2rem 0 0.3rem;
}

/* memory hierarchy diagram */
.memory-diagram { display: flex; flex-direction: column; gap: 0.7rem; margin: 1.4rem 0; }
.mem-level {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #ffffff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--border-strong);
  border-radius: 10px;
  padding: 0.8rem 1.1rem;
}
.mem-level.l1 { border-left-color: var(--green); }
.mem-level.sram { border-left-color: #2e5a7d; }
.mem-level.psram { border-left-color: var(--accent); }
.mem-icon { display: none; }
.mem-info { flex: 1; }
.mem-name { font-family: var(--display); font-weight: 700; font-size: 0.95rem; color: var(--ink); }
.mem-desc { font-size: 0.86rem; color: var(--body); }
.mem-speed {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink);
  background: var(--bg-soft);
  border-radius: 6px;
  padding: 0.25rem 0.6rem;
  white-space: nowrap;
}

/* headline stat cards */
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; margin: 1.6rem 0; }
.stat-card {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.2rem;
  text-align: center;
}
.stat-number { font-family: var(--display); font-weight: 700; font-size: 1.7rem; color: var(--accent); }
.stat-label { font-size: 0.9rem; font-weight: 600; color: var(--ink); }
.stat-sub { font-family: var(--mono); font-size: 0.7rem; color: var(--muted); }
@media (max-width: 700px) { .stat-row { grid-template-columns: 1fr; } }

/* code highlighting inside pre */
.article-body pre .kw { color: #3fae7d; }
.article-body pre .num { color: #e0c06a; }
.article-body pre .str { color: #d9a441; }
.article-body pre .cm { color: #9a8f7a; }
.article-body pre .good { color: #3fae7d; }
.article-body pre .bad { color: #e07856; }
.article-body pre .hi { background: rgba(63, 174, 125, 0.14); border-radius: 3px; }
.article-body pre .x { color: #e07856; font-weight: 600; }

/* ── COURSES ── */
.course-pull {
  max-width: 960px;
  margin: 0.5rem auto 0;
  padding: 0 2rem;
}
.course-pull p {
  font-family: var(--display);
  font-size: 1.15rem;
  color: var(--ink);
  border-left: 3px solid var(--accent);
  padding-left: 1.1rem;
  margin-bottom: 0.7rem;
}
.arc-wrap { max-width: 960px; margin: 0 auto; padding: 1.5rem 2rem 2rem; }
.arc { margin: 2.4rem 0; }
.arc .range {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.arc h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0.15rem 0 0.1rem;
}
.arc .opens { font-size: 0.95rem; color: var(--muted); margin-bottom: 0.9rem; }
.class-row {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.55rem 0.8rem;
  border-bottom: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--body);
}
a.class-row:hover { background: #ffffff; color: var(--body); }
.class-row .no { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); }
.class-row .ti { font-size: 0.99rem; color: var(--ink); }
.class-row .st { font-family: var(--mono); font-size: 0.72rem; color: var(--green); white-space: nowrap; }
.class-row.soon { opacity: 0.55; }
.class-row.soon .st { color: var(--muted); }
a.class-row:hover .st::after { content: ' \2192'; }
.course-info {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem 3.5rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.info-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.2rem 1.4rem;
}
.info-card h3 {
  font-family: var(--display);
  font-size: 1.02rem;
  color: var(--ink);
  margin-bottom: 0.6rem;
}
.info-card ul { list-style: none; }
.info-card li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
  padding: 0.28rem 0;
  border-bottom: 1px dashed var(--border);
}
.info-card li:last-child { border-bottom: 0; }
.info-card li span { font-family: var(--mono); font-size: 0.78rem; color: var(--muted); text-align: right; }
.info-card b { font-weight: 600; color: var(--ink); }
@media (max-width: 820px) { .course-info { grid-template-columns: 1fr; } }

/* ── BLOG / CHAPTERS ── */
.series-card-note { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); }
.chapter-grid {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem 3.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  grid-template-areas: "body side";
  gap: 3.2rem;
  align-items: start;
}
.chap-side { grid-area: side; position: sticky; top: 92px; padding-top: 1.8rem; }
.chap-side .panel {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.2rem;
}
.chap-side .series-name {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.7rem;
  display: block;
}
.chap-side ol { list-style: none; margin: 0; counter-reset: ch; }
.chap-side li { counter-increment: ch; margin: 0; }
.chap-side a {
  display: flex;
  gap: 0.55rem;
  padding: 0.32rem 0.4rem;
  border-radius: 7px;
  font-size: 0.86rem;
  line-height: 1.35;
  color: var(--body);
}
.chap-side a::before {
  content: counter(ch, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  padding-top: 0.12rem;
}
.chap-side a:hover { background: var(--bg-soft); color: var(--ink); }
.chap-side li.current a { background: var(--accent-soft); color: var(--ink); font-weight: 600; }
.chap-side li.current a::before { color: var(--accent); }
.chapter-scope { grid-area: body; max-width: 780px; padding-top: 1.8rem; min-width: 0; }
.chapter-nav {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}
.chapter-nav a {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  color: var(--body);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.chapter-nav a:hover { transform: translateY(-3px); border-color: var(--accent); }
.chapter-nav .dir { font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); display: block; margin-bottom: 0.25rem; }
.chapter-nav .name { font-family: var(--display); font-weight: 700; font-size: 0.98rem; color: var(--ink); }
.chapter-nav a.next { text-align: right; grid-column: 2; }
.chapter-nav a.prev { grid-column: 1; }

/* compat vars for migrated chapter styles (old dark theme names) */
.chapter-scope {
  --bg: #fdf9f3;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --accent-dim: rgba(181, 84, 28, 0.1);
  --blue: #2e5a7d;
  --blue-dim: rgba(46, 90, 125, 0.1);
  --green: #0a7d52;
  --green-dim: rgba(10, 125, 82, 0.1);
  --red: #a83c2c;
  --red-dim: rgba(168, 60, 44, 0.1);
  --border-hover: var(--border-strong);
  --hand: 'Caveat', cursive;
  --radius: 14px;
}
.chapter-scope .codeblock {
  background: #241f18 !important;
  color: #e8e2d2 !important;
  border: 0 !important;
  border-radius: 10px;
  padding: 1.1rem 1.3rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.65;
  white-space: pre;
  margin: 1.2rem 0;
}
.chapter-scope .codeblock .kw { color: #3fae7d !important; }
.chapter-scope .codeblock .tp { color: #e07856 !important; }
.chapter-scope .codeblock .st { color: #7fc79a !important; }
.chapter-scope .codeblock .vl { color: #7fc79a !important; }
.chapter-scope .codeblock .nm { color: #e0c06a !important; }
.chapter-scope .codeblock .op { color: #8fb8d8 !important; }
.chapter-scope .codeblock .cm { color: #9a8f7a !important; font-style: italic; }
.chapter-scope .codeblock .out { color: #e0c06a !important; }
.chapter-scope .codeblock .cmt { color: #9a8f7a !important; }
.chapter-scope .codeblock .err { color: #e07856 !important; background: rgba(224, 120, 86, 0.16) !important; }
.chapter-scope .codeblock .got { color: #7fc79a !important; }
.chapter-scope .codeblock .ask { color: #8fb8d8 !important; }
@media (max-width: 1080px) {
  .chapter-grid { grid-template-columns: 1fr; grid-template-areas: "side" "body"; gap: 0; }
  .chap-side { position: static; }
  .chapter-nav { grid-template-columns: 1fr; }
  .chapter-nav a.next { grid-column: 1; text-align: left; }
}

/* ── FOOTER ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}
.footer-tagline {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--body);
  margin-bottom: 0.25rem;
}
.footer-copy {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
}

/* ── HAMBURGER & MOBILE ── */
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; z-index: 310; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: all 0.3s ease; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(253, 249, 243, 0.97);
  backdrop-filter: blur(16px);
  z-index: 300;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
}
.mobile-overlay.active { display: flex; }
.mobile-overlay a {
  font-family: var(--mono);
  font-size: 1.1rem;
  text-transform: lowercase;
  color: var(--body);
  padding: 0.6rem 1.5rem;
}
.mobile-overlay a:hover { color: var(--accent); }

@media (max-width: 700px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .hero { padding: 2rem 1.25rem 0.5rem; }
  .hero h1 { font-size: 1.7rem; }
  .interests, .latest { padding-left: 1.25rem; padding-right: 1.25rem; }
}