/* ============================================================
   International Shufa Association — stylesheet
   Aesthetic: ink black on rice-paper cream, vermilion seal red,
   restrained gold. Serif typography. Generous whitespace.
   ============================================================ */

:root {
  --ink:        #14110f;
  --ink-soft:   #2a2622;
  --paper:      #f6efe1;
  --paper-2:    #fbf6ea;
  --paper-3:    #ece2cb;
  --vermilion:  #b73a2e;
  --vermilion-2:#8e2a20;
  --gold:       #a87d28;
  --rule:       #d8cdb3;
  --muted:      #6b6256;

  --font-display: "Cormorant Garamond", "Noto Serif SC", Georgia, serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-zh:      "Ma Shan Zheng", "Noto Serif SC", "STKaiti", "KaiTi", serif;

  --max:        1200px;
  --pad-x:      clamp(20px, 5vw, 56px);
  --radius:     2px;

  --ease: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    radial-gradient(circle at 12% 18%, rgba(0,0,0,.025) 0%, transparent 40%),
    radial-gradient(circle at 88% 84%, rgba(183,58,46,.04) 0%, transparent 50%);
}

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

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--vermilion); }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

/* ---------- Typography ---------- */

.display, .title, h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.display {
  font-size: clamp(36px, 6vw, 76px);
  line-height: 1.08;
  font-weight: 500;
  word-wrap: break-word;
  overflow-wrap: break-word;
}
.display em {
  font-style: italic;
  color: var(--vermilion);
  font-weight: 500;
}

.title {
  font-size: clamp(26px, 4vw, 48px);
  line-height: 1.12;
}

h3 {
  font-size: 22px;
  line-height: 1.3;
  font-weight: 600;
}

.eyebrow,
.kicker {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--vermilion);
  margin: 0 0 18px;
}

.lede {
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 56ch;
}
.lede-narrow { max-width: 60ch; color: var(--muted); }

.zh { font-family: var(--font-zh); margin-left: 8px; color: var(--vermilion); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  transition: all .25s var(--ease);
  cursor: pointer;
}
.btn:hover { background: var(--vermilion); border-color: var(--vermilion); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.btn-block { width: 100%; margin-top: 24px; }

.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin: 36px 0 44px; }

/* ---------- Header / Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 239, 225, .82);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--rule); }

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand { display: inline-flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 44px; height: 44px;
  display: inline-grid; place-items: center;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 26px;
  border-radius: var(--radius);
  box-shadow: 0 0 0 4px var(--paper), 0 0 0 5px var(--vermilion);
  transform: rotate(-1deg);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-line-1 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -.005em;
}
.brand-line-2 {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
}

.primary-nav { display: flex; align-items: center; gap: 34px; }
.primary-nav a {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .04em;
  position: relative;
}
.primary-nav a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; bottom: -6px;
  height: 1px; width: 0; background: var(--vermilion);
  transition: width .25s var(--ease);
}
.primary-nav a:not(.nav-cta):hover::after { width: 100%; }

.nav-cta {
  padding: 10px 20px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: 12px;
  transition: all .25s var(--ease);
}
.nav-cta:hover { background: var(--ink); color: var(--paper); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--ink);
  margin: 5px auto;
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: clamp(60px, 9vw, 130px) 0 clamp(60px, 9vw, 110px);
  overflow: hidden;
}
.hero-ink {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(60% 50% at 75% 30%, rgba(20,17,15,.06), transparent 70%),
    radial-gradient(40% 35% at 15% 80%, rgba(183,58,46,.05), transparent 70%);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: clamp(36px, 5vw, 80px);
  align-items: center;
}
.hero-grid > * { min-width: 0; }

.hero-meta {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  border-top: 1px solid var(--rule);
  padding-top: 28px;
}
.hero-meta li { display: flex; flex-direction: column; }
.hero-meta span {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
}
.hero-meta small {
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}

.hero-art {
  margin: 0;
  position: relative;
  text-align: center;
}
.hero-character {
  position: relative;
  display: inline-block;
  font-family: var(--font-zh);
  color: var(--ink);
  filter: drop-shadow(0 12px 22px rgba(20,17,15,.18));
}
.hero-character .ch-1,
.hero-character .ch-2 {
  display: inline-block;
  font-size: clamp(120px, 22vw, 320px);
  line-height: .85;
}
.hero-character .ch-1 { transform: translateY(-14px) rotate(-2deg); }
.hero-character .ch-2 { transform: translateY(28px) rotate(2deg); color: var(--vermilion); margin-left: -.05em; }
.hero-character::after {
  content: "";
  position: absolute;
  right: -10px; top: -16px;
  width: 70px; height: 70px;
  background: var(--vermilion);
  border-radius: var(--radius);
  z-index: -1;
  opacity: .9;
  box-shadow: inset 0 0 0 3px rgba(255,255,255,.18);
}
.hero-art figcaption {
  margin-top: 36px;
  color: var(--muted);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 18px;
  letter-spacing: .02em;
}

.scroll-cue {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1px solid var(--rule);
  border-radius: 50%;
  color: var(--muted);
  font-size: 18px;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob { 0%,100%{ transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* ---------- Section base ---------- */

.section {
  padding: clamp(70px, 9vw, 130px) 0;
  position: relative;
}
.section + .section { border-top: 1px solid var(--rule); }

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto clamp(40px, 5vw, 70px);
}
.section-head .lede-narrow { margin: 22px auto 0; }

.two-col {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}

.prose p + p { margin-top: 18px; }

.kv {
  margin: 36px 0 0; padding: 0;
  display: grid;
  gap: 14px;
  border-top: 1px solid var(--rule);
  padding-top: 24px;
}
.kv > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  font-size: 15px;
}
.kv dt { color: var(--muted); text-transform: uppercase; letter-spacing: .12em; font-size: 12px; }
.kv dd { margin: 0; color: var(--ink); }

/* ---------- Founder ---------- */

.section-founder { background: var(--paper-2); }

.founder-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.portrait-frame {
  position: relative;
  aspect-ratio: 4 / 5;
  width: 100%;
  background:
    linear-gradient(135deg, #2c2520 0%, #1a1612 100%);
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: 0 30px 60px -30px rgba(20,17,15,.4);
}
.portrait-frame::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(255, 245, 220, .15);
  pointer-events: none;
}
.portrait-frame::after {
  content: "陶 · TAO";
  position: absolute;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-body);
  letter-spacing: .35em;
  font-size: 11px;
  color: rgba(246, 239, 225, .55);
}

.portrait-seal {
  font-family: var(--font-zh);
  font-size: clamp(110px, 16vw, 180px);
  color: var(--paper);
  text-shadow: 0 4px 20px rgba(0,0,0,.4);
  background: var(--vermilion);
  width: clamp(140px, 22vw, 220px);
  height: clamp(140px, 22vw, 220px);
  display: grid;
  place-items: center;
  border-radius: 6px;
  box-shadow: 0 0 0 3px rgba(246, 239, 225, .85), 0 24px 40px -16px rgba(0,0,0,.5);
  transform: rotate(-3deg);
}

.founder-portrait figcaption {
  margin-top: 18px;
  text-align: center;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--muted);
}

.role {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--vermilion);
  font-size: 18px;
  margin: 4px 0 24px;
}

.leadership-list {
  list-style: none;
  margin: 28px 0 0; padding: 0;
  border-top: 1px solid var(--rule);
  padding-top: 20px;
}
.leadership-list li {
  padding: 10px 0;
  font-size: 15px;
  color: var(--ink-soft);
}
.leadership-list strong { color: var(--ink); }

/* ---------- Programs ---------- */

.program-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
}
.program-card {
  background: var(--paper);
  padding: clamp(28px, 3vw, 44px);
  position: relative;
  transition: background .25s var(--ease);
}
.program-card:hover { background: var(--paper-2); }
.card-num {
  display: block;
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--vermilion);
  letter-spacing: .15em;
  margin-bottom: 22px;
}
.program-card h3 { margin-bottom: 12px; }
.program-card p { color: var(--muted); font-size: 15.5px; line-height: 1.7; margin: 0; }

/* ---------- Gallery ---------- */

.section-gallery { background: var(--paper-2); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}
.g-item {
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.g-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 40px -22px rgba(20,17,15,.25);
}
.g-item img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--paper-3);
}
.g-item figcaption {
  padding: 18px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.g-item figcaption strong {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
}
.g-item figcaption span {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .04em;
}

/* ---------- Events ---------- */

.event-list {
  list-style: none;
  margin: 0; padding: 0;
  max-width: 880px;
  margin-inline: auto;
  border-top: 1px solid var(--rule);
}
.event {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 28px 4px;
  border-bottom: 1px solid var(--rule);
}
.event-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 90px; height: 90px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  text-align: center;
  position: relative;
}
.event-date::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(246, 239, 225, .18);
}
.event-date span {
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--vermilion);
  font-weight: 600;
}
.event-date strong {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 500;
  line-height: 1;
  margin-top: 2px;
}
.event-body h3 { margin: 0 0 6px; font-size: 20px; }
.event-body p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.6; }
.event-body p + p { margin-top: 8px; }
.event-meta {
  font-size: 13px !important;
  color: var(--ink-soft) !important;
  letter-spacing: .04em;
  font-weight: 500;
}
.event-cta {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--vermilion);
  white-space: nowrap;
}
.event-cta:hover { color: var(--vermilion-2); }

/* ---------- Contact ---------- */

.section-contact { background: var(--ink); color: var(--paper); }
.section-contact .title,
.section-contact .kicker { color: var(--paper); }
.section-contact .kicker { color: var(--vermilion); }
.section-contact p { color: rgba(246, 239, 225, .76); }

.contact-card {
  background: var(--paper);
  color: var(--ink);
  padding: clamp(28px, 4vw, 44px);
  border-radius: var(--radius);
  box-shadow: 0 30px 60px -28px rgba(0,0,0,.55);
}
.contact-card .btn-primary { background: var(--vermilion); border-color: var(--vermilion); color: #fff; }
.contact-card .btn-primary:hover { background: var(--vermilion-2); border-color: var(--vermilion-2); }

.contact-info {
  margin: 0; padding: 0;
  display: grid;
  gap: 22px;
}
.contact-info > div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  align-items: start;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}
.contact-info > div:last-of-type { border-bottom: 0; padding-bottom: 0; }
.contact-info dt {
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--vermilion);
  font-weight: 600;
  padding-top: 4px;
}
.contact-info dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--ink);
  line-height: 1.4;
}
.contact-info a { color: var(--ink); border-bottom: 1px solid var(--rule); }
.contact-info a:hover { color: var(--vermilion); border-bottom-color: var(--vermilion); }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--paper-2);
  border-top: 1px solid var(--rule);
  padding: 60px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr;
  gap: 36px;
  align-items: start;
}
.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}
.footer-brand p { margin: 0; font-size: 14px; line-height: 1.7; color: var(--ink-soft); }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-self: center;
}
.footer-nav a {
  font-size: 14px;
  color: var(--muted);
  letter-spacing: .04em;
}
.footer-nav a:hover { color: var(--vermilion); }
.footer-fine {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  text-align: right;
  line-height: 1.7;
  margin: 0;
  align-self: center;
}

/* ---------- Reveal animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .scroll-cue { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .hero-grid,
  .two-col,
  .founder-grid { grid-template-columns: 1fr; }
  .hero-meta { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-fine { text-align: left; }

  .nav-toggle { display: block; }
  .primary-nav {
    position: fixed;
    inset: 76px 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    background: var(--paper);
    padding: 26px var(--pad-x) 32px;
    border-bottom: 1px solid var(--rule);
    gap: 18px;
    transform: translateY(-110%);
    transition: transform .35s var(--ease);
    box-shadow: 0 16px 32px -20px rgba(0,0,0,.25);
  }
  .primary-nav.is-open { transform: none; }
  .primary-nav a { font-size: 18px; }
  .nav-cta { align-self: flex-start; }
}

@media (max-width: 640px) {
  .hero { padding-top: 56px; }
  .hero-meta { grid-template-columns: 1fr; gap: 16px; }
  .event { grid-template-columns: 80px 1fr; }
  .event-date { width: 76px; height: 76px; }
  .event-cta { grid-column: 2; justify-self: start; padding-top: 4px; }
  .kv > div, .contact-info > div { grid-template-columns: 1fr; gap: 4px; }
  .brand-text { display: none; }
}