/* ============================================================
   Mix and Match — project page
   Palette (as specified):
   Navy #0b1b3d | Periwinkle #b4c5f5 | Indigo-tint #e0e7ff
   Blue-tint #dbeafe | Slate #e2e8f0 | Gray #e5e7eb
   Page bg #f8f9fa | Card bg #f8f6f6
   KKU: #a73b23 (rust) / #c56006 (ochre)
   UCL: #361a54 (deep violet) / #993aff (violet)
   ============================================================ */

:root {
  --navy: #0b1b3d;
  --periwinkle: #b4c5f5;
  --indigo-tint: #e0e7ff;
  --blue-tint: #dbeafe;
  --slate: #e2e8f0;
  --gray: #e5e7eb;
  --page-bg: #ebf1f9;
  --card-bg: #ffffff;

  --kku-rust: #c56006;
  --kku-ochre: #a73b23 ;
  --ucl-violet-dark:#993aff ;
  --ucl-violet: #361a54 ;

  --text-body: #2c3550;
  --text-muted: #5b6785;

  --font-display: 'Source Serif 4', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --max-width: min(1200px, 90vw);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  width: 100%;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-size: clamp(14px, 4.2vw, 22px);
  width: 100%;
  overflow-x: hidden;
  background: linear-gradient(180deg, #dce6f5 0%, var(--page-bg) 40%, #f8fafd 100%);
  color: var(--text-body);
  font-family: var(--font-body);
  line-height: 1.65;
}

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

a { color: inherit; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(16px, 5vw, 28px);
}

/* ---------- Section scaffolding ---------- */
section {
  padding: clamp(40px, 8vw, 64px) 0;
  border-bottom: none;
  position: relative;
}

section:not(:last-of-type)::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--periwinkle), transparent);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--periwinkle);
  display: inline-block;
}

h2.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 5vw, 2rem);
  color: var(--navy);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

/* ---------- Hero ---------- */
header.hero {
  padding: clamp(56px, 12vw, 88px) 0 clamp(40px, 8vw, 56px);
  background: radial-gradient(ellipse at top, #16265a 0%, var(--navy) 55%);
  color: var(--indigo-tint);
  position: relative;
  overflow: hidden;
}

header.hero::after {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 280px; height: 280px;
  background: radial-gradient(circle, rgba(153,58,255,0.15), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

header.hero .wrap { position: relative; z-index: 2; text-align: center; }

header.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(180,197,245,0.08), transparent 40%),
              radial-gradient(circle at 80% 60%, rgba(153,58,255,0.06), transparent 40%);
  pointer-events: none;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--periwinkle);
  margin-bottom: 22px;
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid rgba(180, 197, 245, 0.4);
  border-radius: 999px;
  background: rgba(180, 197, 245, 0.08);
}

h1.title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.8rem, 6vw, 3rem);
  line-height: 1.28;
  color: #ffffff;
  max-width: 760px;
  margin: 0 auto 28px;
  letter-spacing: -0.01em;
}

/* Signature motif: two overlapping "context" panels merging — the
   pairwise mix-and-match idea, rendered as a quiet geometric device */
.pair-motif {
  display: none;
  width: 156px;
  height: 64px;
  margin: 0 auto 34px;
  position: relative;
}

.pair-motif span {
  position: absolute;
  top: 6px;
  width: 96px;
  height: 52px;
  border-radius: 6px;
  border: 1.5px solid var(--periwinkle);
}

.pair-motif span.a { left: 0; background: rgba(180, 197, 245, 0.10); }
.pair-motif span.b { right: 0; background: rgba(180, 197, 245, 0.18); }

.pair-motif::after {
  content: '×';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: #ffffff;
}

/* ---------- Institution pills ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 500;
}

.pill.kku { background: rgba(197, 96, 6, 0.12); color: var(--kku-ochre); border: 1px solid rgba(167, 59, 35, 0.35); }
.pill.ucl { background: rgba(153, 58, 255, 0.12); color: var(--ucl-violet); border: 1px solid rgba(54, 26, 84, 0.35); }

/* ---------- Motivation ---------- */
#Problem p { max-width: 100%; color: var(--text-body); text-align: justify; }
#Problem p + p { margin-top: 16px; }

/* ---------- Team ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.team-card {
  background: var(--card-bg);
  border: 1px solid var(--gray);
  border-top: 3px solid var(--gray);
  border-radius: 12px;
  padding: 50px 20px;
  text-align: center;
  box-shadow: 0 8px 24px -4px rgba(11, 27, 61, 0.10);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.team-card.kku { border-top-color: var(--kku-ochre); }
.team-card.ucl { border-top-color: var(--ucl-violet-dark); }

.member-photo {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  display: block;
  border: 2px solid var(--gray);
}

.team-card .name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(16px, 3vw, 22px); 
  color: var(--navy);
  margin-bottom: 8px;
}

.team-card .role {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

/* ---------- Abstract ---------- */
.abstract-card {
  hyphens: auto;
  background: var(--card-bg);
  border-left: 3px solid var(--navy);
  border-radius: 12px;
  padding: clamp(18px, 4vw, 28px) clamp(18px, 5vw, 32px);
  text-align: justify;
  font-size: clamp(14px, 4.2vw, 22px); 
  color: var(--text-body);
  box-shadow: 0 8px 24px -4px rgba(11, 27, 61, 0.10);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

/* ---------- Workflow swiper ---------- */
.workflow-swiper {
  position: relative;
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  padding-bottom: 40px;
}
.workflow-swiper .swiper-slide {
  display: flex;
  align-items: center;
  justify-content: center;
  height: auto;
  background: var(--card-bg);
  border-radius: 20px;
  padding: 16px;
}
.workflow-swiper img {
  width: 100%;
  max-height: min(420px, 60vw);
  object-fit: contain;
  border-radius: 20px;
  display: block;
}
.swiper-pagination-bullet-active {
  background: var(--navy);
}

.workflow-placeholder .label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.workflow-placeholder .hint {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ---------- Resources (main content / publication) ---------- */
.resource-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.resource-card {
  background: var(--card-bg);
  border: 1px solid var(--gray);
  border-radius: 12px;
  padding: clamp(20px, 4vw, 28px) clamp(18px, 4vw, 26px);
  min-height: 160px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 24px -4px rgba(11, 27, 61, 0.10);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.resource-card .tag {
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.resource-card h3 {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--navy);
  margin-bottom: 10px;
}

.resource-card p { font-size: 18px; color: var(--text-muted); flex: 1; }

.resource-card .coming-soon {
  display: inline-block;
  margin-top: 14px;
  background: var(--slate);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 999px;
  width: fit-content;
}

.resource-card a.ext-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  color: var(--navy);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--periwinkle);
  width: fit-content;
}

.resource-card a.ext-link:hover { border-color: var(--navy); }

/* ---------- Data availability ---------- */
.data-card {
  background: var(--blue-tint);
  border-radius: 12px;
  padding: clamp(18px, 4vw, 26px) clamp(18px, 4vw, 28px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  box-shadow: 0 8px 24px -4px rgba(11, 27, 61, 0.10);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.data-card .meta p { font-size: clamp(14px, 3vw, 22px);  color: var(--text-muted); margin-top: 4px; }

.data-card a.ext-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--navy);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--navy);
  white-space: nowrap;
}

/* ---------- Footer ---------- */
footer {
  padding: 40px 0;
  text-align: center;
  font-size: 13px;
  background: var(--navy);
  color: var(--indigo-tint);
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .team-grid { grid-template-columns: 1fr; }
  .resource-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .pair-motif {
    width: 132px;
    height: 54px;
  }
  .pair-motif span {
    width: 80px;
    height: 44px;
  }
  .team-card { padding: 20px 16px; }
  .data-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .eyebrow { font-size: 11px; }
}