/* The Office of Alvin Singh — base styles */

:root {
  /* Cinematic palette (default) */
  --c-ink: #0F1519;
  --c-gunmetal: #1B242A;
  --c-moonstone: #7EACB5;
  --c-champagne: #F5E4C8;
  --c-paper: #F7F4EE;
  --c-paper-2: #EFEBE2;
  --c-rule: rgba(27, 36, 42, 0.14);
  --c-rule-strong: rgba(27, 36, 42, 0.28);
  --c-muted: rgba(15, 21, 25, 0.58);

  --bg: var(--c-paper);
  --fg: var(--c-ink);
  --accent: var(--c-moonstone);
  --warm: var(--c-champagne);
  --mark: var(--c-gunmetal);

  --serif: "Instrument Serif", "Cormorant Garamond", "Times New Roman", serif;
  --sans: "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --pad: clamp(20px, 3vw, 40px);
  --maxw: 1440px;
}

[data-theme="dark"] {
  --bg: #0E1417;
  --fg: #ECE6D8;
  --c-rule: rgba(245, 228, 200, 0.14);
  --c-rule-strong: rgba(245, 228, 200, 0.32);
  --c-muted: rgba(236, 230, 216, 0.58);
  --mark: var(--c-champagne);
  --warm: rgba(245, 228, 200, 0.06);
}

[data-palette="earthy"] {
  --c-ink: #1A1F12;
  --c-gunmetal: #284139;
  --c-moonstone: #809076;
  --c-champagne: #F8D794;
  --c-paper: #F4EFDF;
  --c-rule: rgba(40, 65, 57, 0.16);
  --c-rule-strong: rgba(40, 65, 57, 0.32);
  --c-muted: rgba(26, 31, 18, 0.62);
}

[data-palette="classic"] {
  --c-ink: #0E141C;
  --c-gunmetal: #0E141C;
  --c-moonstone: #607EA2;
  --c-champagne: #BDB3A3;
  --c-paper: #F2EFEA;
  --c-rule: rgba(14, 20, 28, 0.14);
  --c-rule-strong: rgba(14, 20, 28, 0.30);
  --c-muted: rgba(14, 20, 28, 0.58);
}

[data-palette="sport"] {
  --c-ink: #001F27;
  --c-gunmetal: #003A35;
  --c-moonstone: #719A73;
  --c-champagne: #1F73C2;
  --c-paper: #F1EEE6;
  --c-rule: rgba(0, 31, 39, 0.16);
  --c-rule-strong: rgba(0, 31, 39, 0.34);
  --c-muted: rgba(0, 31, 39, 0.62);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--mark); }

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

::selection { background: var(--accent); color: var(--c-ink); }

/* ────────────────────────────────────────────────────────────── */
/* Type scale                                                     */

.display {
  font-family: var(--serif);
  font-weight: 400;
  font-style: normal;
  letter-spacing: -0.02em;
  line-height: 0.92;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
}

.body {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.5;
  letter-spacing: 0;
}

/* ────────────────────────────────────────────────────────────── */
/* Layout primitives                                              */

.shell {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.rule { border: 0; border-top: 1px solid var(--c-rule); margin: 0; }
.rule-strong { border: 0; border-top: 1px solid var(--c-rule-strong); margin: 0; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Bordered cell — the office grid */
.cell {
  padding: 28px var(--pad);
  border-right: 1px solid var(--c-rule);
  border-bottom: 1px solid var(--c-rule);
}
.cell:last-child { border-right: 0; }

/* ────────────────────────────────────────────────────────────── */
/* Buttons                                                        */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--mark);
  background: var(--mark);
  color: var(--bg);
  cursor: pointer;
  transition: all 160ms ease;
  border-radius: 0;
}
.btn:hover { background: transparent; color: var(--mark); }

.btn-ghost {
  background: transparent;
  color: var(--mark);
}
.btn-ghost:hover { background: var(--mark); color: var(--bg); }

.btn-arrow::after {
  content: "→";
  font-family: var(--sans);
  letter-spacing: 0;
}

/* ────────────────────────────────────────────────────────────── */
/* Wordmark                                                       */

.wordmark {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1;
}
.wordmark .of { font-style: italic; opacity: 0.6; }

/* ────────────────────────────────────────────────────────────── */
/* Nav                                                            */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--c-rule);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--pad);
  max-width: var(--maxw);
  margin: 0 auto;
}
.nav-mark {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1;
}
.nav-mark .of { font-style: italic; opacity: 0.55; font-size: 14px; vertical-align: 2px; padding-right: 4px;}
.nav-links {
  display: flex; gap: 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
}
.nav-links a { position: relative; }
.nav-links a.active::before {
  content: "●";
  margin-right: 6px;
  color: var(--accent);
  font-size: 8px;
  vertical-align: 2px;
}

/* ────────────────────────────────────────────────────────────── */
/* Footer                                                         */

.footer {
  margin-top: 80px;
  background: var(--mark);
  color: var(--bg);
  padding: 60px 0 30px;
}
.footer .shell { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer h4 {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; opacity: 0.55; margin: 0 0 16px;
  font-weight: 500;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; font-size: 14px;}
.footer .footer-mark { font-family: var(--serif); font-size: 36px; line-height: 1; margin-bottom: 16px; }
.footer .footer-mark .of { font-style: italic; opacity: 0.5; font-size: 22px; }
.footer-tag { font-family: var(--serif); font-size: 17px; opacity: 0.7; max-width: 320px; }
.socials { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.socials a {
  width: 36px; height: 36px;
  border: 1px solid rgba(255,255,255,0.18);
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  transition: all 160ms ease;
}
.socials a:hover { background: var(--bg); color: var(--mark); border-color: var(--bg); }
.socials a svg { width: 14px; height: 14px; }

.footer-bottom {
  margin-top: 50px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.12em; text-transform: uppercase;
  opacity: 0.55;
}

@media (max-width: 900px) {
  .footer .shell { grid-template-columns: 1fr 1fr; }
}

/* ────────────────────────────────────────────────────────────── */
/* Section heading                                                */

.section-head {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: end;
  gap: 24px;
  padding: 60px var(--pad) 28px;
  border-bottom: 1px solid var(--c-rule);
}
.section-head .num { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; color: var(--c-muted); }
.section-head .ttl { font-family: var(--serif); font-size: clamp(36px, 5vw, 64px); line-height: 0.95; letter-spacing: -0.02em; }
.section-head .meta { font-family: var(--mono); font-size: 11px; letter-spacing: 0.10em; color: var(--c-muted); text-transform: uppercase; }

@media (max-width: 700px) {
  .section-head { grid-template-columns: 1fr; gap: 8px; }
}

/* Image placeholder */
.placeholder {
  background:
    repeating-linear-gradient(
      135deg,
      var(--c-paper-2) 0 14px,
      var(--bg) 14px 28px
    );
  border: 1px solid var(--c-rule);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--c-muted); text-align: center;
  aspect-ratio: 4/5;
  padding: 20px;
}

/* Marquee */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--c-rule);
  border-bottom: 1px solid var(--c-rule);
  background: var(--warm);
  padding: 16px 0;
}
.marquee-track {
  display: flex; gap: 60px;
  white-space: nowrap;
  animation: marquee 60s linear infinite;
  font-family: var(--serif);
  font-size: 26px;
  letter-spacing: -0.01em;
}
.marquee-track .star { font-family: var(--sans); opacity: 0.4; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Tag chip */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--c-rule-strong);
  border-radius: 999px;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.10em; text-transform: uppercase;
}

/* utility */
.muted { color: var(--c-muted); }
.italic { font-style: italic; }
.serif { font-family: var(--serif); }
.mono { font-family: var(--mono); }
.center { text-align: center; }