/* ===========================================================
   Hana Tech International Foundation — stylesheet
   =========================================================== */

:root {
  --bg: #0c0f16;
  --bg-alt: #12151f;
  --panel: #161a25;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f4f2f7;
  --text-dim: #a8a6b3;
  --text-faint: #6f7180;
  --purple: #9a77b5;
  --purple-light: #c9a7e0;
  --magenta: #c0388a;
  --teal: #3fd8c8;
  --navy: #16345c;
  --gradient-hero: radial-gradient(120% 140% at 12% 15%, rgba(192, 56, 138, 0.55) 0%, rgba(107, 63, 160, 0.35) 30%, rgba(12, 15, 22, 0.05) 55%),
                   radial-gradient(120% 140% at 90% 85%, rgba(63, 216, 200, 0.28) 0%, rgba(22, 52, 92, 0.25) 35%, rgba(12, 15, 22, 0) 60%),
                   var(--bg);
  --gradient-accent: linear-gradient(120deg, var(--magenta) 0%, var(--purple) 45%, var(--teal) 100%);
  --radius: 14px;
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
section { position: relative; padding: 96px 0; }
.section-alt { background: var(--bg-alt); }

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 14px;
}
h1, h2, h3, h4 { font-weight: 700; line-height: 1.15; margin: 0 0 16px; }
h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.8rem, 3.2vw, 2.5rem); }
h3 { font-size: 1.25rem; }
p { color: var(--text-dim); margin: 0 0 16px; }
.lede { font-size: 1.15rem; color: var(--text-dim); max-width: 640px; }
.center { text-align: center; margin-left: auto; margin-right: auto; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient-accent);
  color: #0c0f16;
  box-shadow: 0 8px 24px rgba(154, 119, 181, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(154, 119, 181, 0.45); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--purple-light); color: var(--purple-light); }
.btn-row { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- header / nav ---------- */
header.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(12, 15, 22, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand svg { width: 32px; height: 32px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong { font-size: 15px; font-weight: 700; letter-spacing: 0.01em; }
.brand-text span { font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--purple-light); }

nav.main-nav { display: flex; align-items: center; gap: 30px; }
nav.main-nav a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-dim);
  transition: color 0.2s;
}
nav.main-nav a:hover { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 24px; cursor: pointer; }

@media (max-width: 900px) {
  nav.main-nav {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--bg-alt);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-130%);
    transition: transform 0.25s ease;
    gap: 18px;
  }
  nav.main-nav.open { transform: translateY(0); }
  .nav-toggle { display: block; }
  .nav-cta .btn-ghost { display: none; }
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: 168px 0 110px;
  overflow: hidden;
  background: var(--gradient-hero);
}
.hero canvas#network {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: 0.55;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 760px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--purple-light);
  border: 1px solid rgba(201, 167, 224, 0.35);
  background: rgba(154, 119, 181, 0.1);
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); }
.hero h1 { margin-bottom: 20px; }
.hero .lede { font-size: 1.2rem; margin-bottom: 36px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 40px;
  margin-top: 64px;
  max-width: 560px;
}
.hero-stats div strong { display: block; font-size: 1.7rem; font-weight: 800; color: var(--text); }
.hero-stats div span { font-size: 12.5px; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.08em; }

/* ---------- cards / grids ---------- */
.grid { display: grid; gap: 28px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(201, 167, 224, 0.35); }
.card .icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gradient-accent);
  margin-bottom: 20px;
  color: #0c0f16;
}
.card .icon svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 10px; }
.card p { margin-bottom: 0; font-size: 0.95rem; }

.section-head { max-width: 640px; margin: 0 0 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- mission split ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 36px; } }
.mission-quote {
  border-left: 3px solid transparent;
  border-image: var(--gradient-accent) 1;
  padding-left: 24px;
  font-size: 1.05rem;
  color: var(--text);
  font-style: italic;
}
.pillar-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.pillar-list li {
  display: flex; gap: 14px; align-items: flex-start;
  font-size: 0.95rem; color: var(--text-dim);
}
.pillar-list svg { flex-shrink: 0; width: 20px; height: 20px; margin-top: 2px; color: var(--teal); }

/* ---------- board ---------- */
.board-card { text-align: center; padding: 28px 22px; }
.avatar {
  width: 76px; height: 76px;
  border-radius: 50%;
  margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gradient-accent);
  font-weight: 700; font-size: 1.3rem; color: #0c0f16;
}
.board-card h3 { margin-bottom: 4px; font-size: 1.05rem; }
.board-card .role { color: var(--purple-light); font-size: 0.85rem; font-weight: 600; margin-bottom: 10px; display: block; }
.board-card p { font-size: 0.85rem; margin: 0; }

/* ---------- get involved ---------- */
.involve-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 860px) { .involve-grid { grid-template-columns: 1fr; } }
.involve-card {
  background: linear-gradient(160deg, rgba(154,119,181,0.12), rgba(63,216,200,0.05));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.involve-card h3 { margin-bottom: 8px; }
.involve-card p { font-size: 0.92rem; }
.note-box {
  margin-top: 40px;
  border: 1px dashed rgba(201,167,224,0.35);
  border-radius: var(--radius);
  padding: 20px 24px;
  font-size: 0.88rem;
  color: var(--text-faint);
  background: rgba(154,119,181,0.05);
}

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-item { display: flex; gap: 16px; margin-bottom: 26px; }
.contact-item .icon-sm {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  color: var(--teal);
}
.contact-item strong { display: block; margin-bottom: 2px; font-size: 0.95rem; }
.contact-item span, .contact-item a { font-size: 0.9rem; color: var(--text-dim); }

form.contact-form { display: grid; gap: 16px; }
.contact-form label { font-size: 0.82rem; color: var(--text-faint); margin-bottom: 6px; display: block; }
.contact-form input, .contact-form textarea {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 16px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.92rem;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--purple-light);
}
.contact-form textarea { min-height: 120px; resize: vertical; }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
  background: var(--bg-alt);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 860px) { .footer-top { grid-template-columns: 1fr; } }
.footer-top h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-faint); margin-bottom: 18px; }
.footer-top ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-top ul a { font-size: 0.9rem; color: var(--text-dim); }
.footer-top ul a:hover { color: var(--purple-light); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  padding-top: 24px; border-top: 1px solid var(--border);
  font-size: 0.8rem; color: var(--text-faint);
}
.social-row { display: flex; gap: 14px; }
.social-row a {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim);
  transition: border-color .2s, color .2s;
}
.social-row a:hover { border-color: var(--purple-light); color: var(--purple-light); }

/* misc */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }