/* ============================================================
   PINAK SAHA — brutalist mono system
   ============================================================ */

:root {
  --bg: #ffffff;
  --fg: #000000;
  --muted: #6b6b6b;
  --rule: #000000;
  --rule-soft: rgba(0, 0, 0, 0.18);
  --inv-bg: #000000;
  --inv-fg: #ffffff;
  --grain: 0.03;

  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --display: "Space Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --serif: "Newsreader", "Iowan Old Style", Georgia, serif;

  --gutter: clamp(16px, 4vw, 28px);
  --maxw: 1400px;
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --fg: #f5f5f5;
  --muted: #8a8a8a;
  --rule: #f5f5f5;
  --rule-soft: rgba(245, 245, 245, 0.22);
  --inv-bg: #f5f5f5;
  --inv-fg: #0a0a0a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* film-grain overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: var(--grain);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 1 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply;
}
[data-theme="dark"] body::before { mix-blend-mode: screen; }

a { color: inherit; text-decoration: none; }

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

/* ----------- typography ----------- */
.mono { font-family: var(--mono); }
.display { font-family: var(--display); letter-spacing: -0.02em; }
.serif { font-family: var(--serif); }

.h-display {
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 0.95;
  margin: 0;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg);
}

.muted { color: var(--muted); }

.upper { text-transform: uppercase; letter-spacing: 0.08em; }

/* ----------- layout primitives ----------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.rule { border-top: 1px solid var(--rule); }
.rule-b { border-bottom: 1px solid var(--rule); }
.rule-soft { border-top: 1px solid var(--rule-soft); }

/* ----------- top nav (static, not sticky) ----------- */
.nav {
  position: relative;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
}
.nav__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 14px var(--gutter);
}
.nav__logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}
.nav__logo b { font-weight: 700; }
.nav__logo .dot {
  width: 8px; height: 8px;
  background: var(--fg);
  display: inline-block;
  margin-right: 2px;
}
.nav__right {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav__right a.navlink { padding: 6px 0; border-bottom: 1px solid transparent; }
.nav__right a.navlink.active { border-bottom-color: var(--fg); }
.nav__right a.navlink:hover { border-bottom-color: var(--fg); }
.nav__right a.nav-subscribe {
  border: 1px solid #c0392b; color: #c0392b;
  padding: 5px 10px; border-bottom-color: #c0392b;
}
.nav__right a.nav-subscribe:hover, .nav__right a.nav-subscribe.active {
  background: #c0392b; color: #fff; border-bottom-color: #c0392b;
}

/* hamburger button */
.nav__burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 36px; height: 32px;
  border: 1px solid var(--rule);
  background: transparent;
  cursor: pointer;
  padding: 0 8px;
}
.nav__burger span {
  display: block; height: 1.5px; background: var(--fg);
  transition: transform 180ms ease, opacity 180ms ease;
}
body.menu-open .nav__burger span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
body.menu-open .nav__burger span:nth-child(2) { opacity: 0; }
body.menu-open .nav__burger span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

@media (max-width: 719px) {
  .nav__right .navlink { display: none; }
}
@media (min-width: 720px) {
  .nav__burger { display: none; }
}

/* mobile menu overlay */
.nav__menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 80;
  background: var(--bg);
  flex-direction: column;
  padding: 72px var(--gutter) var(--gutter);
  overflow-y: auto;
}
body.menu-open .nav__menu { display: flex; }
.nav__menu a {
  display: block;
  padding: 18px 0;
  border-top: 1px solid var(--rule);
  font-family: var(--display);
  font-weight: 500;
  font-size: 32px;
  letter-spacing: -0.025em;
}
.nav__menu a:last-of-type { border-bottom: 1px solid var(--rule); }
.nav__menu a.active { background: var(--fg); color: var(--bg); padding-left: 12px; padding-right: 12px; }
.nav__menu a.nav-subscribe { color: #c0392b; }
.nav__menu a.nav-subscribe.active { background: #c0392b; color: #fff; }
.nav__menu__close {
  position: absolute; top: 14px; right: var(--gutter);
  background: transparent; border: 1px solid var(--rule);
  padding: 6px 10px; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.16em; cursor: pointer; color: var(--fg);
}
.nav__menu__foot {
  margin-top: 24px;
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted);
}
.nav__menu__foot-label { margin-bottom: 8px; }
.nav__menu__foot a {
  display: inline-block; padding: 6px 10px 6px 0; border: 0;
  font-family: var(--mono); font-size: 11px; font-weight: 400;
  letter-spacing: 0.12em; color: var(--fg);
}
.nav__menu__theme {
  margin-top: 28px;
  display: flex; align-items: center; justify-content: center; gap: 12px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted);
}
.nav__menu__theme .theme-toggle { font-size: 11px; }

/* second row — social */
.nav__social {
  display: flex;
  align-items: center;
  gap: 0;
  border-top: 1px solid var(--rule);
  overflow-x: auto;
  scrollbar-width: none;
}
.nav__social::-webkit-scrollbar { display: none; }
.nav__social a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  border-right: 1px solid var(--rule);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav__social a:first-child { padding-left: var(--gutter); }
.nav__social a:hover { background: var(--fg); color: var(--bg); }
.nav__social a svg { width: 12px; height: 12px; flex-shrink: 0; }
.nav__social .nav__handle { color: var(--fg); }
.nav__social .nav__sp { flex: 1; border-right: 0; padding: 0; min-width: 0; }
.nav__social .nav__loc {
  border-right: 0;
  color: var(--muted);
  padding-right: var(--gutter);
}
@media (max-width: 719px) {
  .nav__social { display: none; }
  .nav__right .theme-toggle { display: none; }
  .nav__inner { padding: 10px var(--gutter); }
  .nav__logo .muted { display: none; }
}

.theme-toggle {
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.theme-toggle .sw {
  width: 22px; height: 10px;
  border: 1px solid var(--rule);
  position: relative;
}
.theme-toggle .sw::after {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 10px; height: 10px;
  background: var(--fg);
  transition: transform 180ms ease;
}
[data-theme="dark"] .theme-toggle .sw::after { transform: translateX(12px); }

/* ----------- footer ----------- */
.foot {
  border-top: 1px solid var(--rule);
  padding: 28px var(--gutter) 40px;
  font-size: 11px;
  letter-spacing: 0.06em;
}
.foot__bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.foot__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}
@media (min-width: 720px) {
  .foot__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}
.foot__col h6 {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.foot__col a { display: block; padding: 4px 0; }

/* ----------- crosshair coord tags ----------- */
.coord {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ----------- buttons ----------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--rule);
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}
.btn:hover { background: var(--fg); color: var(--bg); }
.btn--inv { background: var(--fg); color: var(--bg); }
.btn--inv:hover { background: transparent; color: var(--fg); }

/* ----------- chips / categories ----------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--rule);
  padding: 6px 10px;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  white-space: nowrap;
}
.chip[aria-pressed="true"] { background: var(--fg); color: var(--bg); }

/* ----------- placeholders for imagery ----------- */
.ph {
  position: relative;
  background:
    repeating-linear-gradient(
      135deg,
      var(--rule-soft) 0 1px,
      transparent 1px 14px
    ),
    var(--bg);
  border: 1px solid var(--rule);
  overflow: hidden;
}
.ph::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}
.ph--dark {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(255,255,255,0.18) 0 1px,
      transparent 1px 14px
    ),
    #111;
  color: #eee;
  border-color: #222;
}
.ph--dark::after { color: #aaa; }

/* ----------- reveal animation ----------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ----------- utility ----------- */
.hide-mobile { display: none; }
@media (min-width: 720px) { .hide-mobile { display: initial; } .hide-desktop { display: none; } }

.stack-8 > * + * { margin-top: 8px; }
.stack-12 > * + * { margin-top: 12px; }
.stack-16 > * + * { margin-top: 16px; }
.stack-24 > * + * { margin-top: 24px; }

/* selection */
::selection { background: var(--fg); color: var(--bg); }

/* ============================================================
   AD SLOTS — Google AdSense-ready containers
   Mobile-first; uses standard Google sizes:
   - Mobile banner       320 x 50
   - Large mobile banner 320 x 100
   - Medium rectangle    300 x 250  (best CTR, AdSense recommended)
   - In-article fluid    responsive
   ============================================================ */
.ad-slot {
  display: block;
  margin: 28px auto;
  text-align: center;
  position: relative;
}
.ad-slot__label {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.ad-slot__frame {
  display: inline-block;
  border: 1px dashed var(--rule-soft);
  background:
    repeating-linear-gradient(
      135deg,
      var(--rule-soft) 0 1px,
      transparent 1px 12px
    );
  position: relative;
  max-width: 100%;
}
.ad-slot__frame--center { margin: 0 auto; }
.ad-slot__frame::after {
  content: attr(data-size);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--muted);
}
/* Standard sizes */
.ad-300x250 { width: 300px; height: 250px; }
.ad-320x100 { width: 320px; height: 100px; max-width: 100%; }
.ad-320x50  { width: 320px; height: 50px;  max-width: 100%; }
.ad-728x90  { width: 320px; height: 100px; max-width: 100%; }
@media (min-width: 768px) {
  .ad-728x90 { width: 728px; height: 90px; }
}
/* In-article fluid */
.ad-fluid {
  width: 100%;
  min-height: 120px;
  max-width: 640px;
}
/* Sticky bottom anchor (mobile) */
.ad-anchor {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 70;
  background: var(--bg);
  border-top: 1px solid var(--rule);
  padding: 6px 8px;
  text-align: center;
  display: none;
}
.ad-anchor.show { display: block; }
.ad-anchor__close {
  position: absolute;
  top: 4px; right: 6px;
  background: var(--bg);
  border: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  padding: 2px 6px;
  cursor: pointer;
  color: var(--fg);
}