/* ============================================================
   Wall of Gratitude — AHS NU
   หน้าขอบคุณผู้บริจาค คณะสหเวชศาสตร์ มหาวิทยาลัยนเรศวร
   ============================================================ */

:root {
  --bg-0: #0a0617;
  --bg-1: #160a2e;
  --bg-2: #1f0d3d;
  --ink: #f6efe1;
  --ink-mute: rgba(246, 239, 225, 0.65);
  --ink-faint: rgba(246, 239, 225, 0.35);
  --gold: #f4d27a;
  --gold-deep: #c89b3c;
  --gold-soft: rgba(244, 210, 122, 0.18);
  --rose: #ffb3a7;
  --accent: #f4d27a;
  --card-bg: rgba(255, 255, 255, 0.04);
  --card-bd: rgba(244, 210, 122, 0.18);
  --card-bd-hi: rgba(244, 210, 122, 0.55);

  --r-lg: 22px;
  --r-md: 14px;
  --r-sm: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--ink);
  font-family: 'Prompt', 'Sarabun', system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body {
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(244, 210, 122, 0.10), transparent 60%),
    radial-gradient(900px 700px at -10% 30%, rgba(120, 70, 200, 0.18), transparent 60%),
    radial-gradient(1000px 800px at 50% 110%, rgba(199, 86, 86, 0.12), transparent 65%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 40%, var(--bg-2) 100%);
  min-height: 100vh;
  position: relative;
}

/* Background layers ----------------------------------------- */
#particles-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}
.bg-glow-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(244,210,122,0.45), transparent 70%);
  top: -120px; right: -100px;
  animation: drift1 18s ease-in-out infinite alternate;
}
.bg-glow-2 {
  width: 460px; height: 460px;
  background: radial-gradient(circle, rgba(167,99,255,0.45), transparent 70%);
  bottom: -120px; left: -80px;
  animation: drift2 22s ease-in-out infinite alternate;
}
@keyframes drift1 {
  to { transform: translate(-60px, 80px) scale(1.1); }
}
@keyframes drift2 {
  to { transform: translate(80px, -60px) scale(1.15); }
}
.bg-grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.06;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.6'/></svg>");
}

/* HERO ------------------------------------------------------ */
.hero {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 5rem 1.5rem 1rem;
}
.hero-inner {
  max-width: 880px;
  margin: 0 auto;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 1.6rem;
  opacity: 0; /* GSAP จะ fade-in */
}
.brand-line {
  width: 56px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.brand-text {
  font-family: 'Kanit', sans-serif;
  letter-spacing: 0.5em;
  font-size: 0.78rem;
  color: var(--gold);
  font-weight: 500;
}
.hero-title {
  margin: 0 0 1.4rem;
  font-weight: 600;
  line-height: 1.15;
}
.title-line {
  display: block;
  opacity: 0;
}
.title-th {
  font-family: 'Prompt', sans-serif;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 600;
  background: linear-gradient(180deg, #fff8e7 0%, var(--gold) 60%, var(--gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.01em;
  text-shadow: 0 0 60px rgba(244, 210, 122, 0.15);
}
.title-en {
  font-family: 'Kanit', sans-serif;
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1rem, 2vw, 1.5rem);
  color: var(--ink-mute);
  margin-top: 0.4rem;
  letter-spacing: 0.05em;
}
.hero-sub {
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  color: var(--ink-mute);
  font-weight: 300;
  max-width: 720px;
  margin: 0 auto 2.5rem;
  line-height: 1.85;
  opacity: 0;
}
.hero-meta {
  display: inline-flex;
  align-items: center;
  gap: 2.5rem;
  padding: 1.4rem 2.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-bd);
  border-radius: var(--r-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
}
.meta-item {
  text-align: center;
}
.meta-num {
  font-family: 'Kanit', sans-serif;
  font-weight: 600;
  font-size: clamp(2rem, 4vw, 2.8rem);
  background: linear-gradient(180deg, #fff5d6, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}
.meta-label {
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-top: 0.4rem;
  letter-spacing: 0.05em;
}
.meta-divider {
  width: 1px;
  height: 38px;
  background: linear-gradient(180deg, transparent, var(--card-bd), transparent);
}

.hero-scroll {
  display: none;
}
.scroll-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  animation: scrollPulse 1.8s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50%      { transform: translateY(8px); opacity: 1; }
}

/* SPOTLIGHT ------------------------------------------------- */
.spotlight-stage {
  position: relative;
  z-index: 2;
  padding: 1.5rem 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.spot-eyebrow {
  font-family: 'Kanit', sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0.85;
}
.spot-card {
  position: relative;
  max-width: 760px;
  width: 100%;
  padding: 3.2rem 2.4rem;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(244, 210, 122, 0.04));
  border: 1px solid var(--card-bd-hi);
  border-radius: var(--r-lg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow:
    0 40px 80px rgba(0, 0, 0, 0.5),
    0 0 60px rgba(244, 210, 122, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  overflow: hidden;
}
.spot-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, var(--gold), transparent 30%, transparent 70%, var(--gold));
  border-radius: var(--r-lg);
  opacity: 0.35;
  z-index: -1;
  filter: blur(12px);
}
.spot-quote-mark {
  font-family: 'Kanit', serif;
  font-size: 6rem;
  line-height: 0.6;
  color: var(--gold);
  opacity: 0.3;
  margin-bottom: -1rem;
  user-select: none;
}
.spot-name {
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
  background: linear-gradient(180deg, #fff8e7, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0.6rem 0 1.2rem;
  min-height: 1.3em;
  word-break: break-word;
  line-height: 1.3;
}
.spot-message {
  font-family: 'Sarabun', sans-serif;
  font-size: clamp(0.95rem, 1.4vw, 1.15rem);
  color: var(--ink-mute);
  font-weight: 400;
  font-style: italic;
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
}
.spot-decor {
  margin-top: 1.8rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.5;
}
.spot-progress {
  width: 200px;
  height: 2px;
  background: rgba(244, 210, 122, 0.15);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 1.6rem;
}
.spot-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  border-radius: 99px;
}

/* WALL ------------------------------------------------------ */
.wall-section {
  position: relative;
  z-index: 2;
  padding: 5rem 1.5rem 4rem;
  max-width: 1280px;
  margin: 0 auto;
}
.wall-heading {
  text-align: center;
  margin-bottom: 3rem;
}
.wall-heading h2 {
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 0.6rem;
  background: linear-gradient(180deg, #fff8e7, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.wall-heading p {
  color: var(--ink-mute);
  font-weight: 300;
  font-size: 0.95rem;
  margin: 0;
}
.wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  grid-auto-rows: 1fr;
  gap: 14px;
  align-items: stretch;
}
.wall-skeleton {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--ink-faint);
  padding: 4rem 2rem;
  font-style: italic;
}
.donor-card {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 86px;
  padding: 0.9rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-bd);
  border-radius: var(--r-md);
  font-family: 'Prompt', sans-serif;
  font-size: 0.92rem;
  font-weight: 400;
  color: var(--ink);
  text-align: center;
  line-height: 1.4;
  word-break: break-word;
  overflow-wrap: anywhere;
  hyphens: auto;
  cursor: default;
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1),
              border-color 0.45s,
              background 0.45s,
              box-shadow 0.45s;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  overflow: hidden;
  opacity: 0; /* GSAP จะค่อยๆ เด้งขึ้น */
}
.donor-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% -20%, rgba(244, 210, 122, 0.25), transparent 60%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.donor-card:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: var(--card-bd-hi);
  background: rgba(244, 210, 122, 0.08);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4),
              0 0 30px rgba(244, 210, 122, 0.18);
}
.donor-card:hover::before {
  opacity: 1;
}
.donor-card.is-featured {
  border-color: var(--gold);
  background: linear-gradient(135deg, rgba(244, 210, 122, 0.18), rgba(244, 210, 122, 0.04));
  box-shadow: 0 0 0 1px var(--gold-soft),
              0 0 50px rgba(244, 210, 122, 0.4),
              0 18px 40px rgba(0, 0, 0, 0.5);
  transform: translateY(-2px) scale(1.04);
}
.donor-card.is-featured::after {
  content: '★';
  position: absolute;
  top: 6px;
  right: 8px;
  color: var(--gold);
  font-size: 0.75rem;
  opacity: 0.7;
}

/* STATS (above footer) -------------------------------------- */
.stats-section {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  padding: 2rem 1.5rem 0;
}

/* FOOTER ---------------------------------------------------- */
.footer {
  position: relative;
  z-index: 2;
  padding: 4rem 1.5rem 3rem;
  text-align: center;
}
.footer-inner {
  max-width: 720px;
  margin: 0 auto;
}
.footer-line {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 0 auto 1.8rem;
}
.footer-th {
  font-family: 'Prompt', sans-serif;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 0.3rem;
}
.footer-en {
  font-family: 'Kanit', sans-serif;
  font-style: italic;
  font-weight: 300;
  color: var(--ink-mute);
  margin: 0 0 1.4rem;
  font-size: 0.9rem;
}
.footer-note {
  color: var(--ink-faint);
  font-size: 0.85rem;
  font-weight: 300;
  margin: 0 0 1.8rem;
  font-style: italic;
}
.footer-copy {
  font-family: 'Kanit', sans-serif;
  color: var(--ink-faint);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  margin: 0;
}

/* Responsive ------------------------------------------------ */
@media (max-width: 640px) {
  .hero-meta {
    flex-direction: column;
    gap: 1.2rem;
    padding: 1.2rem 1.6rem;
  }
  .meta-divider {
    width: 60px; height: 1px;
    background: linear-gradient(90deg, transparent, var(--card-bd), transparent);
  }
  .spot-card {
    padding: 2.4rem 1.4rem;
  }
  .wall {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 10px;
  }
  .donor-card {
    padding: 0.9rem 0.8rem;
    font-size: 0.86rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bg-glow-1, .bg-glow-2, .scroll-dot { animation: none; }
}