/* Pledge & Publish — web page. THE NAT × Patrick J. McGovern Foundation */

@font-face { font-family: 'ABC Diatype Extended'; src: url('./assets/fonts/ABCDiatypeExtended-Bold.woff2') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'ABC Diatype Extended'; src: url('./assets/fonts/ABCDiatypeExtended-Regular.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'ABC Diatype'; src: url('./assets/fonts/ABCDiatype-Bold.woff2') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'ABC Diatype'; src: url('./assets/fonts/ABCDiatype-Regular.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'ABC Diatype'; src: url('./assets/fonts/ABCDiatype-Light.woff2') format('woff2'); font-weight: 300; font-style: normal; font-display: swap; }

:root {
  --nat-deep: #0c2325;
  --nat-deep-2: #163a3c;
  --nat-mint: #cffbcb;
  --nat-cream: #f2efe6;
  --nat-surface: #e8e3d6;
  --nat-surface-2: #f7f4ec;
  --nat-border: #d8d2c2;
  --nat-text-muted: #2f4d4a;
  --nat-text-faint: #56716e;
  --font-display: 'ABC Diatype Extended', 'Arial Narrow', sans-serif;
  --font-body: 'ABC Diatype', 'Helvetica Neue', Arial, sans-serif;

  --wrap: min(920px, 100% - 3rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--nat-cream);
  color: var(--nat-deep);
  -webkit-font-smoothing: antialiased;
  line-height: 1.4;
  overflow-x: hidden;
}
a { color: inherit; }
.wrap { width: var(--wrap); margin-inline: auto; }

.grain-wrap { position: fixed; inset: 0; pointer-events: none; z-index: 50; opacity: 0.025; mix-blend-mode: multiply;
  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='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Header ---------- */
.head { position: sticky; top: 0; z-index: 40; background: rgba(242,239,230,0.88); backdrop-filter: blur(8px); border-bottom: 1px solid var(--nat-border); }
.head-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.9rem 0; }
.brand { display: flex; align-items: center; gap: 0.6rem; }
.nat-mark { height: 22px; width: auto; color: var(--nat-deep); }
.with { font-size: 0.68rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--nat-text-faint); }
.pjmf-mark { height: 28px; width: auto; display: block; }
.head-tag { font-weight: 700; font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--nat-text-faint); text-align: right; }

/* ---------- Hero ---------- */
.hero { padding: clamp(3.5rem, 8vw, 6.5rem) 0 clamp(2.5rem, 5vw, 3.5rem); }
.eyebrow { display: block; font-weight: 700; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--nat-text-faint); }
.title { margin-top: 0.7rem; font-family: var(--font-display); font-weight: 700; font-size: clamp(3rem, 11vw, 6.2rem); line-height: 0.98; letter-spacing: -0.01em; }
.subtitle { margin-top: 1rem; font-weight: 300; font-size: clamp(1.15rem, 2.4vw, 1.5rem); color: var(--nat-text-muted); max-width: 34ch; }
.intro { margin-top: 1.5rem; max-width: 62ch; font-size: clamp(1rem, 1.2vw, 1.1rem); line-height: 1.55; color: var(--nat-text-muted); }
.intro strong { color: var(--nat-deep); }

/* ---------- Pillars ---------- */
.pillars { padding-bottom: clamp(3rem, 6vw, 5rem); display: flex; flex-direction: column; gap: 1rem; }
.pillar { border-top: 1px solid var(--nat-border); padding: 1.75rem 0; display: flex; flex-direction: column; gap: 1.25rem; transition: background 0.2s ease; }
.pillar-focus { border-top: none; margin-inline: -1.25rem; padding-inline: 1.25rem; background: var(--nat-surface); border-radius: 14px; }
.pillar-head { display: flex; gap: 1rem; align-items: flex-start; }
.pillar-num { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; line-height: 1.15; color: var(--nat-text-faint); opacity: 0.5; flex-shrink: 0; }
.pillar-focus .pillar-num { color: var(--nat-deep); opacity: 0.85; }
.pillar-title-group h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.35rem, 2.6vw, 1.7rem); line-height: 1.12; }
.title-line { display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap; }
.focus-badge { display: inline-block; font-weight: 700; font-size: 0.62rem; letter-spacing: 0.07em; text-transform: uppercase; color: var(--nat-cream); background: var(--nat-deep); padding: 0.25rem 0.6rem; border-radius: 999px; white-space: nowrap; transform: translateY(-1px); }
.principle { margin-top: 0.4rem; font-size: 0.95rem; line-height: 1.4; color: var(--nat-text-muted); max-width: 46ch; }

.pillar-cols { display: grid; grid-template-columns: 1fr; gap: 1rem; padding-left: calc(1.6rem + 1rem); }
.col p { margin-top: 0.5rem; font-size: 0.95rem; line-height: 1.4; color: var(--nat-text-muted); max-width: 46ch; }
.tag { display: inline-block; font-weight: 700; font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.28rem 0.75rem; border-radius: 999px; }
.tag-pledge { background: var(--nat-deep); color: var(--nat-mint); }
.tag-publish { background: var(--nat-surface-2); color: var(--nat-deep); border: 1px solid var(--nat-border); }
.pillar-focus .tag-publish { background: var(--nat-cream); }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--nat-border); padding: 2.25rem 0 2.75rem; }
.waterline { width: 84px; height: 10px; color: var(--nat-text-faint); }
.foot-line { margin-top: 0.9rem; font-size: 0.85rem; letter-spacing: 0.01em; color: var(--nat-text-faint); }
.sources { margin-top: 0.7rem; font-size: 0.74rem; line-height: 1.55; color: var(--nat-text-faint); max-width: 68ch; }
.sources a { text-decoration: underline; text-decoration-color: var(--nat-border); text-underline-offset: 2px; }
.sources a:hover { text-decoration-color: var(--nat-text-faint); }

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Tablet / Desktop ---------- */
@media (min-width: 640px) {
  .pillar-cols { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 800px) {
  .pillar { flex-direction: row; align-items: flex-start; gap: 2.5rem; }
  .pillar-focus { padding-block: 2rem; }
  .pillar-head { flex: 0 0 42%; }
  .pillar-cols { flex: 1; padding-left: 0; align-self: center; }
}

@media (max-width: 480px) {
  .head-tag { font-size: 0.6rem; max-width: 40%; }
  .pillar-cols { padding-left: 0; }
}