/* =============================================================
   Punjabia — style.css
   Design system: tokens, typography, layout, site chrome,
   home-page components, trust labels (src / confidence),
   term popovers, buttons, footer, reveal animation.
   Plain CSS, no build step.
   ============================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* Warm paper palette */
  --paper:   #fbf6ec;
  --paper-2: #f6eedd;
  --cream:   #f2e7cf;
  --sand:    #ece0c7;
  --card:    #fffdf8;

  --ink:    #2a211c;   /* primary text  */
  --ink-2:  #5b4f45;   /* secondary text */
  --ink-3:  #877a6c;   /* muted / meta   */
  --line:   #e5d9c2;   /* hairlines      */

  /* Deep warm surface for hero / panels / footer */
  --night:   #2c1a17;
  --night-2: #43261f;
  --night-3: #5a3527;

  /* Gold + accent */
  --gold-300:#e9cd88;
  --gold-400:#d3a850;
  --gold-500:#b6862f;
  --accent:  #a6432b;   /* terracotta / madder */
  --accent-2:#8a3722;

  /* Type families */
  --font-display:"Fraunces", Georgia, "Times New Roman", serif;
  --font-serif:  "Newsreader", Georgia, "Times New Roman", serif;
  --font-sans:   "Public Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-gur:    "Noto Serif Gurmukhi", "Noto Sans Gurmukhi", sans-serif;
  --font-shah:   "Noto Nastaliq Urdu", serif;

  /* Fluid type scale */
  --step--1: clamp(0.83rem, 0.80rem + 0.14vw, 0.92rem);
  --step-0:  clamp(1.00rem, 0.95rem + 0.24vw, 1.14rem);
  --step-1:  clamp(1.20rem, 1.10rem + 0.48vw, 1.44rem);
  --step-2:  clamp(1.44rem, 1.28rem + 0.85vw, 1.95rem);
  --step-3:  clamp(1.72rem, 1.48rem + 1.35vw, 2.55rem);
  --step-4:  clamp(2.05rem, 1.68rem + 2.10vw, 3.30rem);
  --step-5:  clamp(2.45rem, 1.90rem + 3.10vw, 4.35rem);

  --maxw: 1140px;
  --maxw-narrow: 720px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-1: 0 1px 2px rgba(43,26,15,.05), 0 8px 26px rgba(43,26,15,.07);
  --shadow-2: 0 16px 50px rgba(43,26,15,.16);
}

/* ---------- Reset-ish base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--step-0);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-2); }

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.12; color: var(--ink); font-weight: 560; }
h1 { font-size: var(--step-4); letter-spacing: -.01em; }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); }

/* Punjabi script helpers */
.gur  { font-family: var(--font-gur); }
.shah { font-family: var(--font-shah); }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.1rem, 4vw, 2.2rem); }
.container--narrow { max-width: var(--maxw-narrow); }

.section { padding-block: clamp(3rem, 7vw, 5.5rem); }
.section--tight { padding-block: clamp(2rem, 4.5vw, 3.25rem); }
.section-intro > * + * { margin-top: 1rem; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--ink); color: #fff; padding: .7rem 1.1rem; border-radius: 0 0 8px 0;
  font-family: var(--font-sans); font-size: .9rem;
}
.skip-link:focus { left: 0; }

/* ---------- Eyebrow / section headings ---------- */
.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--step--1);
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 650;
  color: var(--accent);
  margin: 0 0 .35rem;
}
.eyebrow.on-dark, .on-dark .eyebrow { color: var(--gold-300); }

.sirlekh h2 { margin: .1rem 0 0; }
.sirlekh.on-dark h2 { color: #fff; }

/* Decorative divider (sirlekh-mark) */
.sirlekh-mark {
  border: 0; height: 0; width: 74px; margin: 0 0 1.3rem;
  border-top: 2px solid var(--gold-400);
  position: relative;
}
.sirlekh-mark::after {
  content: ""; position: absolute; top: -5px; left: 22px;
  width: 8px; height: 8px; background: var(--gold-400);
  transform: rotate(45deg);
}
.sirlekh-mark.center { margin-inline: auto; width: 90px; }
.sirlekh-mark.center::after { left: 50%; margin-left: -4px; }

.lede {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--ink-2);
  font-weight: 400;
}
.on-dark .lede { color: var(--cream); }

/* ---------- Site header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 66px;
}
.brand {
  display: inline-flex; align-items: baseline; gap: .5rem;
  text-decoration: none; color: var(--ink);
}
.brand .gur { color: var(--accent); font-size: 1.15em; line-height: 1; }
.brand b {
  font-family: var(--font-display); font-weight: 600; font-size: 1.28rem;
  letter-spacing: -.01em; color: var(--ink);
}

.nav { display: flex; align-items: center; gap: clamp(.6rem, 2vw, 1.6rem); }
.nav a {
  font-family: var(--font-sans); font-size: .96rem; font-weight: 550;
  color: var(--ink-2); text-decoration: none; padding: .35rem .1rem;
  border-bottom: 2px solid transparent; transition: color .2s, border-color .2s;
}
.nav a:hover { color: var(--ink); }
.nav a.is-active { color: var(--ink); border-color: var(--gold-400); }

.nav-toggle {
  display: none; align-items: center; justify-content: center;
  width: 42px; height: 42px; padding: 0; border: 1px solid var(--line);
  background: var(--card); border-radius: 10px; color: var(--ink); cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  /* Only collapse when JS is available to reopen it */
  html.js .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: .3rem clamp(1.1rem, 4vw, 2.2rem);
    max-height: 0; overflow: hidden; transition: max-height .32s ease;
  }
  html.js .nav.open { max-height: 70vh; padding-block: .6rem 1rem; }
  html.js .nav a { width: 100%; padding: .7rem 0; border-bottom: 1px solid var(--line); }
  html.js .nav a:last-child { border-bottom: 0; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-sans); font-weight: 600; font-size: .98rem;
  padding: .8rem 1.35rem; border-radius: 999px; cursor: pointer;
  text-decoration: none; border: 1.5px solid transparent; transition: transform .15s, background .2s, color .2s, border-color .2s;
}
.btn:active { transform: translateY(1px); }
.btn--gold { background: var(--gold-400); color: #33210b; }
.btn--gold:hover { background: var(--gold-300); color: #33210b; }
.btn--ghost { background: transparent; color: var(--cream); border-color: rgba(242,231,207,.5); }
.btn--ghost:hover { border-color: var(--gold-300); color: #fff; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(120% 140% at 85% -10%, rgba(211,168,80,.22), transparent 55%),
    linear-gradient(160deg, var(--night) 0%, var(--night-2) 78%, var(--night-3) 100%);
  color: var(--cream);
}
.hero__inner { padding-block: clamp(3.2rem, 8vw, 6rem); }
.hero .eyebrow { color: var(--gold-300); }
.hero h1 { color: #fff; font-size: var(--step-5); margin: .2rem 0 .6rem; }
.hero h1 .gur, .hero .gur {
  display: block; color: var(--gold-300); font-size: .46em; font-weight: 500;
  letter-spacing: .01em; margin-bottom: .15em;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.7rem; }

/* ---------- Grids & cards ---------- */
.grid { display: grid; gap: 1.3rem; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 820px) { .grid--3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.card {
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  text-decoration: none; color: inherit; box-shadow: var(--shadow-1);
  transition: transform .18s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: var(--sand); }
.card__media {
  aspect-ratio: 16 / 9; width: 100%;
  background:
    radial-gradient(80% 120% at 20% 0%, rgba(211,168,80,.35), transparent 60%),
    linear-gradient(135deg, var(--night-2), var(--night));
  border-bottom: 1px solid var(--line);
}
.card__body { padding: 1.15rem 1.25rem 1.35rem; display: flex; flex-direction: column; gap: .5rem; flex: 1; }
.card__kicker {
  font-family: var(--font-sans); font-size: .74rem; letter-spacing: .13em; text-transform: uppercase;
  font-weight: 650; color: var(--accent);
}
.card__title { font-size: var(--step-1); margin: 0; }
.card__excerpt { margin: 0; color: var(--ink-2); font-size: .98rem; line-height: 1.55; }
.card__meta { margin-top: auto; }

.link-arrow {
  font-family: var(--font-sans); font-weight: 600; font-size: .92rem; color: var(--accent);
  display: inline-flex; align-items: center; gap: .4rem; text-decoration: none;
}
.link-arrow span { transition: transform .2s ease; }
.card:hover .link-arrow span, .link-arrow:hover span { transform: translateX(4px); }

/* ---------- Panel (dark feature block) ---------- */
.panel {
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(211,168,80,.18), transparent 55%),
    linear-gradient(155deg, var(--night), var(--night-2));
  color: var(--cream); border-radius: var(--radius);
  padding: clamp(1.6rem, 4vw, 2.8rem); box-shadow: var(--shadow-2);
}
.panel h2, .panel h3 { color: #fff; }
.panel h3 { font-size: var(--step-2); margin: 0 0 .6rem; }

/* ---------- Trust labels: src pills ---------- */
.src {
  --c: var(--ink-2);
  display: inline-flex; align-items: center; gap: .4em;
  font-family: var(--font-sans); font-size: .74rem; font-weight: 650;
  letter-spacing: .04em; line-height: 1; padding: .42em .7em; border-radius: 999px;
  color: var(--c); background: color-mix(in srgb, var(--c) 12%, #fff);
  border: 1px solid color-mix(in srgb, var(--c) 30%, transparent); white-space: nowrap;
}
.src::before { content: ""; width: .5em; height: .5em; border-radius: 50%; background: var(--c); }
.src--consensus { --c: #2f6b4f; }
.src--competing { --c: #9a6a1c; }
.src--folklore  { --c: #7c4a86; }
.src--mythology { --c: #3f57a6; }
.src--religious { --c: #1f7c86; }
.src--oral      { --c: #a75d4e; }
.src--political { --c: #5a6472; }
.on-dark .src, .panel .src { background: rgba(255,255,255,.10); color: #fff; border-color: rgba(255,255,255,.28); }
.on-dark .src::before, .panel .src::before { background: var(--gold-300); }

/* src-note: block callout */
.src-note {
  --c: var(--ink-2);
  border-left: 4px solid var(--c);
  background: color-mix(in srgb, var(--c) 8%, var(--paper-2));
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.2rem; margin: 1.6rem 0;
}
.src-note > .src { margin-bottom: .6rem; }
.src-note p { margin: 0; color: var(--ink); }
.src-note.src--consensus { --c: #2f6b4f; }
.src-note.src--competing { --c: #9a6a1c; }
.src-note.src--folklore  { --c: #7c4a86; }
.src-note.src--mythology { --c: #3f57a6; }
.src-note.src--religious { --c: #1f7c86; }
.src-note.src--oral      { --c: #a75d4e; }
.src-note.src--political { --c: #5a6472; }

/* ---------- Confidence indicator ---------- */
.confidence {
  display: inline-flex; align-items: center; gap: .5em;
  font-family: var(--font-sans); font-size: .8rem; font-weight: 600; color: var(--ink-2);
  vertical-align: baseline;
}
.confidence__bars { display: inline-flex; align-items: flex-end; gap: 2px; }
.confidence__bars .bar {
  width: 5px; height: 9px; border-radius: 1.5px;
  background: color-mix(in srgb, var(--ink-3) 35%, transparent);
}
.confidence__bars .bar:nth-child(2) { height: 12px; }
.confidence__bars .bar:nth-child(3) { height: 15px; }
.confidence[data-level="1"] .bar.is-on { background: #b4552f; }
.confidence[data-level="2"] .bar.is-on { background: #c08a24; }
.confidence[data-level="3"] .bar.is-on { background: #2f6b4f; }

/* ---------- Term popover (inline glossary) ---------- */
.term {
  border-bottom: 1.5px dotted var(--gold-500);
  cursor: help; color: inherit; font-style: inherit;
}
.term:focus-visible { outline: 2px solid var(--gold-400); outline-offset: 2px; border-radius: 3px; }
.term-pop {
  position: absolute; z-index: 80; max-width: 300px;
  background: var(--night); color: var(--cream);
  border: 1px solid var(--night-3); border-radius: 12px;
  box-shadow: var(--shadow-2); padding: .85rem 1rem;
  font-family: var(--font-sans); font-size: .9rem; line-height: 1.45;
  opacity: 0; transform: translateY(4px); transition: opacity .15s ease, transform .15s ease;
  pointer-events: none;
}
.term-pop.is-open { opacity: 1; transform: none; }
.term-pop__scripts { display: flex; align-items: baseline; gap: .7rem; margin-bottom: .35rem; }
.term-pop__scripts .gur  { font-size: 1.5rem; color: #fff; line-height: 1; }
.term-pop__scripts .shah { font-size: 1.35rem; color: var(--gold-300); line-height: 1; }
.term-pop__translit { color: var(--gold-300); font-style: italic; margin: 0 0 .3rem; }
.term-pop__meaning { margin: 0; color: var(--cream); }

/* ---------- Footer ---------- */
.site-footer {
  background: linear-gradient(180deg, var(--night), #211311);
  color: var(--cream); margin-top: 2rem;
  padding-block: clamp(2.6rem, 6vw, 4rem);
}
.footer-grid {
  display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 2rem 1.4rem;
}
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand .brand { color: #fff; }
.footer-brand .brand b { color: #fff; }
.footer-brand .brand .gur { color: var(--gold-300); }
.footer-brand p { color: rgba(242,231,207,.72); max-width: 34ch; margin: .8rem 0 0; font-size: .95rem; }
.footer-col h5 {
  font-family: var(--font-sans); font-size: .75rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--gold-300); margin: 0 0 .8rem; font-weight: 650;
}
.footer-col a {
  display: block; color: rgba(242,231,207,.82); text-decoration: none;
  font-size: .96rem; padding: .28rem 0;
}
.footer-col a:hover { color: #fff; }
.footer-base {
  display: flex; flex-wrap: wrap; gap: .6rem 1.5rem; justify-content: space-between;
  align-items: center; margin-top: 2.4rem; padding-top: 1.3rem;
  border-top: 1px solid rgba(242,231,207,.16);
  font-family: var(--font-sans); font-size: .84rem; color: rgba(242,231,207,.6);
}
.footer-tagline { font-family: var(--font-serif); font-style: italic; color: var(--gold-300); }

/* ---------- Reveal on scroll (JS-gated so no-JS still shows content) ---------- */
.reveal { opacity: 1; }
html.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
html.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Placeholder card (entry not yet published) ---------- */
.card--soon { opacity: .8; box-shadow: none; cursor: default; }
.card--soon:hover { transform: none; box-shadow: none; border-color: var(--line); }
.card--soon .card__media { filter: grayscale(.35) brightness(.96); }
.card--soon .card__kicker { color: var(--ink-3); }

/* ---------- Utilities ---------- */
.on-dark, .on-dark h1, .on-dark h2, .on-dark h3 { color: #fff; }