/* ============================================================
   AKSHAT SINGH — PORTFOLIO
   Aesthetic: engineering spec-sheet / blueprint drafting table.
   Display: Fraunces (contrast serif) · Body: IBM Plex Sans
   Data/labels: IBM Plex Mono
   ============================================================ */

:root {
  --bg: #0b0d0e;
  --bg-alt: #131619;
  --card: #15181b;
  --line: rgba(238, 241, 238, 0.13);
  --line-strong: rgba(238, 241, 238, 0.28);
  --ink: #eef1ee;
  --ink-dim: #9aa39e;
  --ink-faint: #656e6a;
  --accent: #ff5a2b;
  --accent-dim: #7a3218;
  --accent-2: #cdfa4e;
  --serif: "Fraunces", "Iowan Old Style", serif;
  --sans: "IBM Plex Sans", -apple-system, sans-serif;
  --mono: "IBM Plex Mono", monospace;
  --maxw: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    linear-gradient(var(--bg), var(--bg)),
    repeating-linear-gradient(0deg, var(--line) 0px, var(--line) 1px, transparent 1px, transparent 96px),
    repeating-linear-gradient(90deg, var(--line) 0px, var(--line) 1px, transparent 1px, transparent 96px);
  background-blend-mode: normal;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------------- corner ticks (drafting-table framing) ---------------- */
.frame-tick {
  position: fixed;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line-strong);
  z-index: 40;
  pointer-events: none;
}
.frame-tick.tl { top: 18px; left: 18px; border-right: none; border-bottom: none; }
.frame-tick.tr { top: 18px; right: 18px; border-left: none; border-bottom: none; }
.frame-tick.bl { bottom: 18px; left: 18px; border-right: none; border-top: none; }
.frame-tick.br { bottom: 18px; right: 18px; border-left: none; border-top: none; }

/* ---------------- nav ---------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(11, 13, 14, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.nav-mark {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-mark .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px 2px var(--accent-dim);
}
.nav-links {
  display: flex;
  gap: 6px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
}
.nav-links a {
  text-decoration: none;
  color: var(--ink-dim);
  padding: 8px 14px;
  border: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--ink);
  border-color: var(--line-strong);
}
.nav-toggle { display: none; }

/* ---------------- hero ---------------- */
.hero {
  padding: 96px 0 70px;
  position: relative;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--accent);
}
h1.display {
  font-family: var(--serif);
  font-weight: 600;
  font-optical-sizing: auto;
  font-size: clamp(2.6rem, 6vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
  max-width: 15ch;
}
h1.display em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}
.lede {
  font-size: 1.18rem;
  color: var(--ink-dim);
  max-width: 56ch;
  margin: 0 0 40px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}
.hero-meta .item { font-family: var(--mono); font-size: 12.5px; color: var(--ink-faint); }
.hero-meta .item b { display: block; font-size: 14px; color: var(--ink); font-weight: 500; margin-top: 4px; }

.btn-row { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.btn {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  text-decoration: none;
  padding: 13px 22px;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.solid { background: var(--accent); border-color: var(--accent); color: #0b0d0e; font-weight: 600; }
.btn.solid:hover { background: var(--accent-2); border-color: var(--accent-2); color: #0b0d0e; }

/* ---------------- section headers ---------------- */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin: 0 0 40px;
  padding-top: 70px;
  border-top: 1px solid var(--line);
}
.section-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 600;
  margin: 0;
}
.section-head .tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  white-space: nowrap;
}
section { padding-bottom: 10px; }

/* ---------------- project grid / cards ---------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 90px;
}
.card {
  background: var(--bg);
  padding: 34px 34px 30px;
  text-decoration: none;
  color: var(--ink);
  position: relative;
  transition: background .18s ease;
  display: flex;
  flex-direction: column;
  min-height: 260px;
}
.card:hover { background: var(--bg-alt); }
.card .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  margin-bottom: 20px;
}
.card h3 {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 600;
  margin: 0 0 12px;
  line-height: 1.15;
}
.card p { color: var(--ink-dim); font-size: 14.5px; margin: 0 0 22px; flex-grow: 1; }
.card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tag-pill {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.03em;
  color: var(--ink-faint);
  border: 1px solid var(--line-strong);
  padding: 4px 9px;
}
.card .go {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.card .go .arrow { transition: transform .18s ease; }
.card:hover .go .arrow { transform: translateX(4px); }
.card.featured { grid-column: span 2; }
.card.featured h3 { font-size: 2.1rem; }

@media (max-width: 780px) {
  .grid { grid-template-columns: 1fr; }
  .card.featured { grid-column: span 1; }
}

/* ---------------- about / skills ---------------- */
.two-col {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 70px;
  margin-bottom: 90px;
}
@media (max-width: 820px) { .two-col { grid-template-columns: 1fr; gap: 40px; } }

.spec-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 13px; }
.spec-table tr { border-top: 1px solid var(--line); }
.spec-table td { padding: 14px 0; vertical-align: top; }
.spec-table td:first-child { color: var(--ink-faint); width: 40%; padding-right: 20px; }
.spec-table td:last-child { color: var(--ink); }

.skill-block { margin-bottom: 26px; }
.skill-block .cat {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 10px; display: block;
}
.skill-row { display: flex; flex-wrap: wrap; gap: 8px; }

.prose { color: var(--ink-dim); font-size: 15.5px; }
.prose p { margin: 0 0 18px; }
.prose strong { color: var(--ink); font-weight: 600; }

/* ---------------- project detail page ---------------- */
.proj-hero {
  padding: 54px 0 40px;
  border-bottom: 1px solid var(--line);
}
.crumb {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  text-decoration: none; display: inline-flex; align-items: center; gap: 8px; margin-bottom: 30px;
}
.crumb:hover { color: var(--accent); }
.proj-hero h1 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.04; margin: 0 0 20px; max-width: 20ch;
}
.proj-sub { color: var(--ink-dim); font-size: 1.1rem; max-width: 62ch; margin: 0 0 36px; }

.meta-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.meta-strip .m { background: var(--bg); padding: 18px 20px; }
.meta-strip .m .k { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 8px; }
.meta-strip .m .v { font-family: var(--mono); font-size: 13.5px; color: var(--ink); }
@media (max-width: 700px) { .meta-strip { grid-template-columns: repeat(2, 1fr); } }

.figure {
  margin: 56px 0;
  border: 1px solid var(--line);
  background: var(--card);
}
.figure img { width: 100%; }
.figure .cap {
  padding: 16px 20px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 20px;
}
.figure .cap span:first-child { color: var(--ink-dim); }
.figure-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin: 56px 0; }
.figure-pair .figure { margin: 0; }
@media (max-width: 780px) { .figure-pair { grid-template-columns: 1fr; } }

.body-block { max-width: 74ch; margin-bottom: 8px; }
.body-block h2 {
  font-family: var(--serif); font-size: 1.7rem; font-weight: 600;
  margin: 64px 0 22px; padding-top: 40px; border-top: 1px solid var(--line);
}
.body-block h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.body-block p { color: var(--ink-dim); font-size: 15.5px; margin: 0 0 18px; }
.body-block strong { color: var(--ink); }
.body-block ul { color: var(--ink-dim); font-size: 15.5px; padding-left: 20px; margin: 0 0 18px; }
.body-block li { margin-bottom: 8px; }
.body-block li::marker { color: var(--accent); }

.callout {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 22px;
  margin: 30px 0;
  color: var(--ink);
  font-size: 15px;
}
.callout .lbl { font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; display: block; margin-bottom: 6px; }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin: 46px 0; }
.stat { background: var(--bg); padding: 26px 22px; }
.stat .n { font-family: var(--serif); font-size: 2.1rem; color: var(--accent-2); font-weight: 600; line-height: 1; margin-bottom: 8px; }
.stat .l { font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint); }
@media (max-width: 700px) { .stat-row { grid-template-columns: 1fr; } }

.proj-nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 40px 0 100px; margin-top: 40px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 13px;
}
.proj-nav a { text-decoration: none; color: var(--ink-dim); }
.proj-nav a:hover { color: var(--accent); }

/* ---------------- footer ---------------- */
footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 64px;
  margin-top: 60px;
}
.footer-grid { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; }
.footer-cta h2 { font-family: var(--serif); font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 600; margin: 0 0 22px; max-width: 16ch; }
.footer-links { display: flex; flex-direction: column; gap: 10px; font-family: var(--mono); font-size: 13px; }
.footer-links a { text-decoration: none; color: var(--ink-dim); }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  display: flex; justify-content: space-between; margin-top: 60px; padding-top: 24px;
  border-top: 1px solid var(--line); font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint);
  flex-wrap: wrap; gap: 10px;
}

/* ---------------- misc ---------------- */
.reveal { opacity: 0; transform: translateY(14px); animation: reveal .7s ease forwards; }
@keyframes reveal { to { opacity: 1; transform: translateY(0); } }

@media (max-width: 640px) {
  .nav-links { display: none; }
  .wrap { padding: 0 20px; }
  .hero { padding: 70px 0 50px; }
}