/* ============================================================
   ADITYA NAAG — "Signal"
   An editorial, dark-mode-first personal site.
   Fraunces (display) · Hanken Grotesk (body) · JetBrains Mono (signal)
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..900;1,9..144,300..700&family=Hanken+Grotesk:wght@300..800&family=JetBrains+Mono:wght@400;500;700&display=swap");

/* ---------- Tokens ---------- */
:root {
  --ink: #0c0a09;
  --ink-2: #161311;
  --ink-3: #221d1a;
  --line: #322a26;
  --paper: #f4ede4;
  --paper-dim: #b9aea3;
  --paper-faint: #82766b;
  --amber: #ff8a3d;
  --amber-soft: #ffb27a;
  --amber-deep: #d8642a;
  --good: #7fd1a6;

  --bg: var(--ink);
  --surface: var(--ink-2);
  --surface-2: var(--ink-3);
  --border: var(--line);
  --text: var(--paper);
  --text-dim: var(--paper-dim);
  --text-faint: var(--paper-faint);
  --accent: var(--amber);
  --accent-deep: var(--amber-deep);

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Hanken Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --maxw: 1180px;
  --gap: clamp(1rem, 2.5vw, 2rem);
  --radius: 18px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Light theme */
[data-theme="light"] {
  --bg: #f4ede4;
  --surface: #fffaf3;
  --surface-2: #fbf3e8;
  --border: #e4d8c8;
  --text: #1b1714;
  --text-dim: #5c5249;
  --text-faint: #8a7d70;
  --accent: #c5571d;
  --accent-deep: #a8460f;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.075rem);
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.5s var(--ease), color 0.5s var(--ease);
}
img,
svg {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
  text-decoration: none;
}
ul {
  list-style: none;
  padding: 0;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: none;
}

/* ---------- Grain + atmosphere ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

section {
  position: relative;
  padding-block: clamp(4rem, 9vw, 8rem);
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.site-header.scrolled {
  border-bottom-color: var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-brand {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.nav-brand .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 3s var(--ease) infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.55;
    transform: scale(0.82);
  }
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.2rem);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}
.nav-links a {
  color: var(--text-dim);
  transition: color 0.25s var(--ease);
  position: relative;
}
.nav-links a:hover {
  color: var(--text);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover::after {
  width: 100%;
}
.nav-cta {
  display: none;
}
@media (max-width: 640px) {
  .nav-links .hide-sm {
    display: none;
  }
}

.theme-toggle {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--text-dim);
  transition: all 0.3s var(--ease);
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: rotate(15deg);
}
.theme-toggle svg {
  width: 17px;
  height: 17px;
}
.theme-toggle .moon {
  display: none;
}
[data-theme="light"] .theme-toggle .sun {
  display: none;
}
[data-theme="light"] .theme-toggle .moon {
  display: block;
}

/* ---------- Section heading ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}
.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 1.3rem + 3vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  font-optical-sizing: auto;
}
.section-title em {
  font-style: italic;
  color: var(--accent);
}
.section-lead {
  color: var(--text-dim);
  max-width: 56ch;
  margin-top: 1.25rem;
  font-size: 1.05rem;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding-top: clamp(3rem, 7vw, 6rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 60vw;
  height: 60vw;
  max-width: 760px;
  max-height: 760px;
  background: radial-gradient(
    circle at center,
    color-mix(in srgb, var(--accent) 28%, transparent),
    transparent 62%
  );
  filter: blur(40px);
  z-index: 0;
  pointer-events: none;
  animation: float 14s ease-in-out infinite;
}
@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-3%, 4%) scale(1.08);
  }
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}
.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  margin-bottom: 1.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.hero-kicker .ping {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--good);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--good) 70%, transparent);
  animation: ping 2.5s var(--ease) infinite;
}
@keyframes ping {
  0% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--good) 70%, transparent);
  }
  70%,
  100% {
    box-shadow: 0 0 0 10px transparent;
  }
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 350;
  font-size: clamp(2.6rem, 1.2rem + 6.5vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-optical-sizing: auto;
}
.hero-title .line {
  display: block;
  overflow: hidden;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
}
.hero-sub {
  margin-top: 1.75rem;
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.3rem);
  color: var(--text-dim);
  max-width: 48ch;
  line-height: 1.6;
}
.hero-role {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-faint);
  border-left: 2px solid var(--accent);
  padding-left: 0.9rem;
}
.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

/* Portrait */
.hero-portrait {
  position: relative;
  justify-self: center;
  width: min(330px, 78vw);
  aspect-ratio: 4 / 5;
}
.hero-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  filter: grayscale(0.15) contrast(1.02);
}
.hero-portrait::after {
  content: "";
  position: absolute;
  inset: 14px -14px -14px 14px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  z-index: -1;
  opacity: 0.5;
}
.hero-portrait .badge {
  position: absolute;
  bottom: -16px;
  left: -16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.6rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  box-shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.6);
}
.hero-portrait .badge b {
  color: var(--accent);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  border: 1px solid var(--border);
  transition: all 0.3s var(--ease);
}
.btn svg {
  width: 15px;
  height: 15px;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a0e06;
  font-weight: 500;
}
.btn-primary:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -12px color-mix(in srgb, var(--accent) 70%, transparent);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- Stats strip ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: clamp(3rem, 6vw, 4.5rem);
}
.stat {
  background: var(--surface);
  padding: clamp(1.4rem, 3vw, 2.2rem);
  transition: background 0.3s var(--ease);
}
.stat:hover {
  background: var(--surface-2);
}
.stat .num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 1.4rem + 2vw, 3rem);
  line-height: 1;
  font-weight: 400;
  color: var(--accent);
}
.stat .lbl {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}
@media (max-width: 560px) {
  .stats {
    grid-template-columns: 1fr;
  }
}

/* ---------- Social row (inline, under stats) ---------- */
.social-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
}
.social-row-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.social-row-label::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--text-faint);
}
.social-row ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
}
.social-row li a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  position: relative;
  padding-bottom: 2px;
}
.social-row .s-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  transition: color 0.25s var(--ease);
}
.social-row .s-handle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  transition: color 0.25s var(--ease);
}
.social-row li a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease);
}
.social-row li a:hover::after {
  width: 100%;
}
.social-row li a:hover .s-name {
  color: var(--accent);
}
.social-row li a:hover .s-handle {
  color: var(--text-dim);
}

/* ---------- Certifications marquee ---------- */
.certs {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
  justify-content: center;
}
.cert {
  width: clamp(74px, 11vw, 104px);
  filter: grayscale(0.35);
  opacity: 0.85;
  transition: all 0.35s var(--ease);
}
.cert:hover {
  filter: grayscale(0);
  opacity: 1;
  transform: translateY(-6px) scale(1.05);
}

/* ============================================================
   BENTO GRID  (videos / talks)
   ============================================================ */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gap);
}
.tile {
  grid-column: span 4;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}
.tile:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
}
.tile.wide {
  grid-column: span 8;
}
.tile.half {
  grid-column: span 6;
}
@media (max-width: 880px) {
  .tile,
  .tile.wide,
  .tile.half {
    grid-column: span 6;
  }
}
@media (max-width: 560px) {
  .tile,
  .tile.wide,
  .tile.half {
    grid-column: span 12;
  }
}

/* Lazy YouTube facade */
.yt {
  display: block;
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--ink);
  cursor: pointer;
  overflow: hidden;
}
.yt img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.78;
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease);
}
.yt:hover img {
  opacity: 1;
  transform: scale(1.04);
}
.yt .play {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 92%, transparent);
  display: grid;
  place-items: center;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}
.yt:hover .play {
  transform: scale(1.12);
}
.yt .play svg {
  width: 22px;
  height: 22px;
  fill: #1a0e06;
  margin-left: 3px;
}
.tile-cap {
  padding: 1rem 1.15rem 1.2rem;
  font-size: 0.95rem;
  line-height: 1.45;
}
.tile-cap .tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.4rem;
}
.tile-cap .tile-desc {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ---------- Sub-tabs for video categories ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.filter {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-dim);
  transition: all 0.25s var(--ease);
}
.filter:hover {
  color: var(--text);
}
.filter.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* ---------- Pull quote ---------- */
.pull-quote {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  max-width: 60ch;
  position: relative;
  padding-left: clamp(1.5rem, 4vw, 3rem);
}
.pull-quote::before {
  content: "\201C";
  position: absolute;
  left: -0.1rem;
  top: -0.5rem;
  font-family: var(--font-display);
  font-size: clamp(4rem, 8vw, 6rem);
  line-height: 1;
  color: var(--accent);
  opacity: 0.55;
}
.pull-quote blockquote {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1.2rem, 0.95rem + 1.2vw, 1.8rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ---------- Speaking mosaic ---------- */
.mosaic {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 200px;
  grid-auto-flow: dense;
  gap: 14px;
}
.mosaic-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, var(--surface), var(--surface-2));
  grid-column: span 2;
  grid-row: span 1;
}
/* Varied sizes for an editorial mosaic rhythm */
.mosaic-item.m-0 {
  grid-column: span 4;
  grid-row: span 2;
}
.mosaic-item.m-1 {
  grid-column: span 2;
  grid-row: span 1;
}
.mosaic-item.m-2 {
  grid-column: span 2;
  grid-row: span 1;
}
.mosaic-item.m-3 {
  grid-column: span 3;
  grid-row: span 1;
}
.mosaic-item.m-4 {
  grid-column: span 3;
  grid-row: span 1;
}
.mosaic-item.m-5 {
  grid-column: span 2;
  grid-row: span 2;
}
/* Explicit overrides (set "size" in speaking.json) */
.mosaic-item.m-wide {
  grid-column: span 4;
  grid-row: span 1;
}
.mosaic-item.m-tall {
  grid-column: span 2;
  grid-row: span 2;
}
.mosaic-item.m-big {
  grid-column: span 4;
  grid-row: span 2;
}
.mosaic-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.mosaic-item:hover img {
  transform: scale(1.06);
}
.mosaic-item .meta {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.6rem 1.1rem 1rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.82));
  color: #f4ede4;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}
.mosaic-item:hover .meta,
.mosaic-item:focus-within .meta {
  opacity: 1;
  transform: none;
}
.mosaic-item .meta .ev {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber-soft);
}
.mosaic-item .meta .cap {
  font-size: 0.92rem;
  margin-top: 0.25rem;
}
.mosaic-item.placeholder {
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1.25rem;
}
.mosaic-item.placeholder .ph-inner {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  line-height: 1.6;
}
.mosaic-item.placeholder svg {
  width: 28px;
  height: 28px;
  margin: 0 auto 0.7rem;
  stroke: var(--text-faint);
  fill: none;
  stroke-width: 1.4;
}
@media (max-width: 720px) {
  .mosaic {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 160px;
  }
  .mosaic-item[class] {
    grid-column: span 2;
    grid-row: span 1;
  }
  .mosaic-item .meta {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Project cards (passion projects) ---------- */
.proj-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap);
}
.proj-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}
.proj-card:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
}
.proj-shot {
  aspect-ratio: 16 / 10;
  background: var(--ink);
  overflow: hidden;
}
.proj-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.6s var(--ease);
}
.proj-card:hover .proj-shot img {
  transform: scale(1.05);
}
.proj-body {
  padding: 1.25rem 1.3rem 1.5rem;
}
.proj-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.6rem;
}
.proj-card-head h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.4rem;
}
.proj-card-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  white-space: nowrap;
}
.proj-body p {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ---------- College websites grid ---------- */
.web-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--gap);
}
.web-thumb {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}
.web-thumb:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
.web-thumb img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: top center;
  filter: grayscale(0.4);
  opacity: 0.9;
  transition: filter 0.35s var(--ease), opacity 0.35s var(--ease);
}
.web-thumb:hover img {
  filter: grayscale(0);
  opacity: 1;
}
.web-thumb figcaption {
  padding: 0.7rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--text-dim);
}

/* ---------- Blog list ---------- */
.posts {
  border-top: 1px solid var(--border);
}
.post-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1.5rem;
  padding: 2rem 0.5rem;
  border-bottom: 1px solid var(--border);
  transition: padding 0.35s var(--ease), background 0.35s var(--ease);
}
.post-row:hover {
  padding-inline: 1.25rem;
  background: var(--surface);
}
.post-row .when {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  padding-top: 0.4rem;
}
.post-row h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.3rem, 1rem + 1.1vw, 1.85rem);
  line-height: 1.15;
  transition: color 0.3s var(--ease);
}
.post-row:hover h3 {
  color: var(--accent);
}
.post-row .excerpt {
  margin-top: 0.7rem;
  color: var(--text-dim);
  font-size: 0.98rem;
  max-width: 68ch;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1rem;
}
.tag-pill {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
}
@media (max-width: 620px) {
  .post-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

.source-note {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 2.5rem 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.source-note::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ============================================================
   ARTICLE (blog post)
   ============================================================ */
.article {
  max-width: 720px;
  margin-inline: auto;
}
.article-head {
  padding-block: clamp(3rem, 7vw, 5rem) 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}
.article h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.1rem, 1.4rem + 3vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-top: 1.25rem;
}
.article-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: 1.5rem;
}
.prose {
  font-size: 1.075rem;
  line-height: 1.75;
}
.prose p {
  margin-block: 1.4rem;
}
.prose h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.9rem;
  margin-top: 3rem;
  margin-bottom: 1rem;
}
.prose h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.45rem;
  margin-top: 2.2rem;
  margin-bottom: 0.8rem;
}
.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.prose a:hover {
  text-decoration-thickness: 2px;
}
.prose img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-block: 2rem;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-2);
  padding: 0.15em 0.4em;
  border-radius: 6px;
}
.prose pre {
  background: var(--ink-2) !important;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  overflow-x: auto;
  margin-block: 1.8rem;
  font-size: 0.88rem;
}
.prose pre code {
  background: none;
  padding: 0;
}
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1.25rem;
  margin-block: 1.8rem;
  color: var(--text-dim);
  font-style: italic;
}
.prose ul,
.prose ol {
  margin-block: 1.4rem;
  padding-left: 1.4rem;
}
.prose ul {
  list-style: disc;
}
.prose ol {
  list-style: decimal;
}
.prose li {
  margin-block: 0.5rem;
}

.back-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap 0.3s var(--ease), color 0.3s var(--ease);
}
.back-link:hover {
  color: var(--accent);
  gap: 0.8rem;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: clamp(3rem, 6vw, 5rem);
  margin-top: 4rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2.5rem;
  align-items: end;
}
@media (max-width: 700px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}
.footer-name {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 1.2rem + 2.5vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}
.footer-tag {
  color: var(--text-faint);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}
.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.footer-social a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  transition: all 0.3s var(--ease);
}
.footer-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}
.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}
.footer-bottom a {
  color: var(--text-faint);
  transition: color 0.3s var(--ease);
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* ---------- Scroll reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
[data-reveal].in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 404 ---------- */
.center-stage {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
}
.center-stage .big {
  font-family: var(--font-display);
  font-size: clamp(5rem, 18vw, 12rem);
  line-height: 0.9;
  color: var(--accent);
}

/* ---------- Skip link (a11y) ---------- */
.skip {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 1000;
  background: var(--accent);
  color: #1a0e06;
  padding: 0.6rem 1rem;
  border-radius: 0 0 8px 0;
}
.skip:focus {
  left: 0;
}