/* =============================================
   KSAE ICC Homepage — style.css
   ============================================= */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary:   #003087;   /* KSAE deep blue */
  --color-secondary: #0057b8;
  --color-accent:    #e8001d;   /* KSAE red */
  --color-dark:      #0d1117;
  --color-gray-900:  #1a1f2e;
  --color-gray-700:  #374151;
  --color-gray-500:  #6b7280;
  --color-gray-300:  #d1d5db;
  --color-gray-100:  #f3f4f6;
  --color-white:     #ffffff;
  --color-bg-alt:    #f8f9fc;

  --font-main:  'Inter', 'Noto Sans KR', sans-serif;
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.14);
  --transition: 0.25s ease;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  color: var(--color-gray-700);
  background: var(--color-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul { list-style: none; }

/* ---------- Utilities ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-secondary);
  background: rgba(0, 87, 184, 0.08);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 16px;
  line-height: 1.25;
}
.section-desc {
  color: var(--color-gray-500);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-secondary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: white; }
.btn-full { width: 100%; justify-content: center; }

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 1px 20px rgba(0,0,0,0.10);
  backdrop-filter: blur(10px);
}
.nav-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
}
.nav-logo-img {
  height: 36px;
  width: auto;
  display: block;
  /* Dark logo → white on transparent dark hero */
  filter: brightness(0) invert(1);
  transition: filter var(--transition);
}
.navbar.scrolled .nav-logo-img {
  /* Restore original dark color when navbar is white */
  filter: none;
}
.nav-logo-text {
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-ksae { color: var(--color-white); }
.logo-divider { color: rgba(255,255,255,0.4); font-weight: 300; }
.logo-icc { color: var(--color-accent); }
.navbar.scrolled .logo-ksae { color: var(--color-primary); }
.navbar.scrolled .logo-divider { color: var(--color-gray-300); }

.nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255,255,255,0.88);
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}
.nav-links a:hover::after { width: 100%; }
.navbar.scrolled .nav-links a { color: var(--color-gray-700); }
.navbar.scrolled .nav-links a:hover { color: var(--color-primary); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: white;
  border-radius: 2px;
  transition: all var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--color-gray-700); }

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary) 0%, #001d5c 50%, #0a1628 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(0,87,184,0.35) 0%, transparent 60%),
    radial-gradient(circle at 80% 20%, rgba(232,0,29,0.12) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 120px 24px 80px;
  max-width: 860px;
}
/* Hero logo */
.hero-logo {
  height: 80px;
  width: auto;
  margin: 0 auto 28px;
  display: block;
  /* Dark logo → white */
  filter: brightness(0) invert(1);
  opacity: 0.92;
}

.hero-sub {
  font-size: 1.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.18;
  margin-bottom: 24px;
}
.hero-title-en {
  display: block;
  font-size: clamp(2rem, 4vw, 2.7rem);
  font-weight: 700;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em;
  margin-top: 10px;
}
.hero-desc {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: rgba(255,255,255,0.75);
  margin-bottom: 44px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-scroll {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.hero-scroll span {
  display: block;
  width: 24px; height: 40px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 12px;
  position: relative;
}
.hero-scroll span::after {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: rgba(255,255,255,0.6);
  border-radius: 2px;
  animation: scrollDown 1.8s infinite;
}
@keyframes scrollDown {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(16px); }
}

/* =============================================
   STATS BANNER
   ============================================= */
.stats-banner {
  background: var(--color-primary);
  padding: 52px 24px;
}
.stats-container {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {}
.stat-num {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}
.stat-unit { font-size: 1.4rem; font-weight: 700; color: var(--color-accent); }
.stat-label {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  margin-top: 6px;
  font-weight: 400;
}

/* =============================================
   ABOUT
   ============================================= */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.about-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: all var(--transition);
}
.about-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-secondary);
}
.about-icon {
  width: 52px; height: 52px;
  color: var(--color-secondary);
  margin-bottom: 20px;
}
.about-card h3 {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 12px;
}
.about-card p { font-size: 0.95rem; color: var(--color-gray-500); line-height: 1.75; }

/* =============================================
   RESEARCH
   ============================================= */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
/* Research grid — 3 per row */
.research-grid-7 {
  grid-template-columns: repeat(3, 1fr);
}
/* 7th card — first column */
.research-grid-7 .research-card:nth-child(7) {
  grid-column: 1;
}

.research-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
/* Left accent bar */
.research-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 0;
  background: var(--color-secondary);
  transition: height var(--transition);
}
/* Hover highlight — blue tint (같은 스타일, 파랑 계열) */
.research-card:hover::before { height: 100%; }
.research-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-secondary);
  background: linear-gradient(160deg, rgba(0,87,184,0.05) 0%, white 55%);
}
.research-card:hover .research-num {
  color: rgba(0, 87, 184, 0.25);
}

.research-num {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-gray-300);   /* 이전 gray-100 대비 훨씬 진하게 */
  line-height: 1;
  margin-bottom: 12px;
  transition: color var(--transition);
}
.research-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 10px;
}
.research-card > p {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 16px;
}
.research-card ul { display: flex; flex-direction: column; gap: 6px; }
.research-card ul li {
  font-size: 0.82rem;
  color: var(--color-secondary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}
.research-card ul li::before {
  content: '→';
  font-size: 0.75rem;
}

/* 07 — 일반 카드와 동일 스타일 (accent 제거) */
.research-card-accent {
  border-color: var(--color-gray-100);
  background: var(--color-white);
}
.research-card-accent::before { background: var(--color-secondary); }
.research-card-accent .research-num { color: var(--color-gray-300); }
.research-card-accent ul li { color: var(--color-secondary); }
.research-card-accent:hover {
  border-color: var(--color-secondary);
  background: linear-gradient(160deg, rgba(0,87,184,0.05) 0%, white 55%);
}
.research-card-accent:hover .research-num { color: rgba(0,87,184,0.25); }

/* =============================================
   TECHNOLOGY ROADMAP
   ============================================= */
.roadmap-legend {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.roadmap-phase-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-white);
}
.roadmap-phase-badge span {
  font-size: 0.78rem;
  font-weight: 400;
  opacity: 0.85;
}
.roadmap-phase-badge.phase-1 { background: var(--color-primary); }
.roadmap-phase-badge.phase-2 { background: var(--color-secondary); }
.roadmap-phase-badge.phase-3 { background: #0a4a7a; }

/* Tabs */
.roadmap-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  border-bottom: 2px solid var(--color-gray-300);
  padding-bottom: 0;
}
.roadmap-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-500);
  transition: all var(--transition);
  white-space: nowrap;
}
.roadmap-tab:hover { color: var(--color-secondary); }
.roadmap-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 700;
}
.tab-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--color-gray-100);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-gray-500);
  flex-shrink: 0;
  transition: all var(--transition);
}
.roadmap-tab.active .tab-num {
  background: var(--color-primary);
  color: white;
}

/* Panels */
.roadmap-panel { display: none; }
.roadmap-panel.active { display: block; }

.roadmap-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-300);
}
.roadmap-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 700px;
}
.roadmap-table thead tr {
  background: var(--color-gray-900);
}
.roadmap-table thead th {
  padding: 14px 18px;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.85);
}
.roadmap-table thead th.col-tech { color: rgba(255,255,255,0.55); width: 18%; }
.roadmap-table thead th.col-p1 { color: #7eb8ff; }
.roadmap-table thead th.col-p2 { color: #50c8a8; }
.roadmap-table thead th.col-p3 { color: #f8a84b; }

.roadmap-table tbody tr {
  border-bottom: 1px solid var(--color-gray-100);
  transition: background var(--transition);
}
.roadmap-table tbody tr:last-child { border-bottom: none; }
.roadmap-table tbody tr:hover { background: var(--color-bg-alt); }

.tech-name {
  padding: 16px 18px;
  font-weight: 600;
  color: var(--color-gray-700);
  font-size: 0.85rem;
  vertical-align: middle;
  background: var(--color-bg-alt);
  border-right: 1px solid var(--color-gray-300);
}
.roadmap-table tbody td:not(.tech-name) {
  padding: 12px 16px;
  vertical-align: middle;
}

.rm-cell {
  display: inline-block;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 500;
  line-height: 1.4;
}
.rm-cell.p1 {
  background: rgba(0, 48, 135, 0.08);
  color: var(--color-primary);
}
.rm-cell.p2 {
  background: rgba(0, 87, 184, 0.08);
  color: var(--color-secondary);
}
.rm-cell.p3 {
  background: rgba(10, 74, 122, 0.08);
  color: #0a4a7a;
}

/* =============================================
   ACTIVITIES
   ============================================= */
.activities-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.activity-featured {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  color: white;
  position: relative;
  overflow: hidden;
}
.activity-featured::after {
  content: '';
  position: absolute;
  right: -40px; bottom: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
}
.activity-badge {
  display: inline-block;
  background: var(--color-accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.activity-featured h3 {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.activity-featured p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.75;
  margin-bottom: 28px;
}
.activity-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
}

.activity-list { display: flex; flex-direction: column; gap: 24px; }
.activity-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-300);
  transition: all var(--transition);
}
.activity-item:hover {
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}
.activity-icon { font-size: 1.6rem; flex-shrink: 0; }
.activity-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 6px;
}
.activity-info p { font-size: 0.875rem; color: var(--color-gray-500); }

/* =============================================
   ACTIVITIES — type grid
   ============================================= */
.activity-type-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 64px;
}
.activity-type-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  transition: all var(--transition);
}
.activity-type-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-secondary);
}
.atc-icon {
  width: 44px; height: 44px;
  color: var(--color-secondary);
  margin-bottom: 14px;
}
.atc-icon svg { width: 100%; height: 100%; }
.activity-type-card h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 8px;
}
.activity-type-card p {
  font-size: 0.85rem;
  color: var(--color-gray-500);
  line-height: 1.65;
  margin-bottom: 14px;
}
.atc-freq {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-secondary);
  background: rgba(0,87,184,0.08);
  padding: 3px 10px;
  border-radius: 20px;
}

/* =============================================
   ACTIVITIES — Workshop History
   ============================================= */
.ws-history {
  border-top: 2px solid var(--color-gray-300);
  padding-top: 48px;
}
.ws-history-header {
  margin-bottom: 36px;
}
.ws-history-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 8px;
}
.ws-history-header p {
  font-size: 0.9rem;
  color: var(--color-gray-500);
}

/* Year group */
.ws-year-group {
  display: flex;
  gap: 32px;
  margin-bottom: 40px;
}
.ws-year-label {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-gray-300);
  writing-mode: horizontal-tb;
  min-width: 56px;
  padding-top: 18px;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.ws-cards {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Workshop card */
.ws-card {
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.ws-card-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition);
}
.ws-card-header:hover { background: var(--color-bg-alt); }
.ws-left {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  flex: 1;
}
.ws-season-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  margin-top: 2px;
}
.ws-season-badge.spring  { background: rgba(0,87,184,0.10); color: var(--color-secondary); }
.ws-season-badge.fall    { background: rgba(232,0,29,0.10);  color: var(--color-accent); }
.ws-season-badge.summer  { background: rgba(22,163,74,0.10); color: #16a34a; }
.ws-season-badge.winter  { background: rgba(100,116,139,0.10); color: #475569; }
.ws-card-title {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 4px;
  line-height: 1.4;
}
.ws-card-sub {
  font-size: 0.82rem;
  color: var(--color-gray-500);
}
.ws-chevron {
  width: 20px; height: 20px;
  flex-shrink: 0;
  color: var(--color-gray-500);
  transition: transform var(--transition);
}
.ws-chevron.open { transform: rotate(180deg); }

/* Card body */
.ws-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.ws-card-body.open { max-height: 2000px; }

.ws-card-desc {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--color-gray-500);
  line-height: 1.7;
  border-bottom: 1px solid var(--color-gray-100);
}

/* Program table */
.ws-program { padding: 8px 0; }
.ws-program-header {
  display: grid;
  grid-template-columns: 120px 1fr 200px;
  gap: 16px;
  padding: 10px 24px;
  background: var(--color-gray-900);
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.ws-program-row {
  display: grid;
  grid-template-columns: 120px 1fr 200px;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-gray-100);
  align-items: start;
  transition: background var(--transition);
}
.ws-program-row:last-child { border-bottom: none; }
.ws-program-row:hover { background: var(--color-bg-alt); }
.ws-program-row.intro { background: rgba(0,48,135,0.025); }
.ws-program-row.panel { background: rgba(232,0,29,0.025); }

.prog-order { padding-top: 2px; }
.prog-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(0,87,184,0.1);
  color: var(--color-secondary);
}
.prog-badge.intro { background: rgba(0,48,135,0.12); color: var(--color-primary); }
.prog-badge.panel-badge { background: rgba(232,0,29,0.10); color: var(--color-accent); }

.prog-content strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 8px;
  line-height: 1.4;
}
.prog-content ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.prog-content ul li {
  font-size: 0.82rem;
  color: var(--color-gray-500);
  padding-left: 12px;
  position: relative;
}
.prog-content ul li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--color-gray-300);
}

.prog-speaker { text-align: right; }
.spk-name {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 3px;
}
.spk-org {
  display: block;
  font-size: 0.78rem;
  color: var(--color-gray-500);
}

/* Upcoming notice */
.ws-upcoming {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: rgba(0,87,184,0.05);
  border: 1px dashed rgba(0,87,184,0.25);
  border-radius: var(--radius-md);
  margin-top: 8px;
}
.ws-upcoming-icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  color: var(--color-secondary);
}
.ws-upcoming-icon svg { width: 100%; height: 100%; }
.ws-upcoming strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 4px;
}
.ws-upcoming p {
  font-size: 0.84rem;
  color: var(--color-gray-500);
}

/* =============================================
   COMMITTEE
   ============================================= */
.committee-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.committee-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--color-gray-300);
  transition: all var(--transition);
}
.committee-card.featured {
  border-color: var(--color-secondary);
  background: linear-gradient(180deg, rgba(0,87,184,0.04) 0%, white 100%);
}
.committee-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.committee-role {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 16px;
}
.committee-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.avatar-placeholder {
  font-size: 1.3rem;
  font-weight: 700;
  color: white;
}
.committee-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 4px;
}
.committee-affil {
  font-size: 0.84rem;
  color: var(--color-gray-500);
  margin-bottom: 8px;
}
.committee-card .committee-note {
  font-size: 0.8rem;
  color: var(--color-secondary);
  font-weight: 500;
}
.committee-note-bottom {
  text-align: center;
  margin-top: 32px;
  font-size: 0.82rem;
  color: var(--color-gray-500);
}

/* =============================================
   CONTACT
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-icon {
  width: 44px; height: 44px;
  background: rgba(0,87,184,0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-secondary);
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-item h4 {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-500);
  margin-bottom: 4px;
}
.contact-item p { font-size: 0.95rem; color: var(--color-gray-700); }

.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray-700);
}
.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 0.95rem;
  color: var(--color-gray-700);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(0,87,184,0.12);
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--color-dark);
  padding: 60px 24px 40px;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}
.footer-logo {
  margin-bottom: 16px;
}
.footer-logo-img {
  height: 48px;
  width: auto;
  display: block;
  /* White version for dark footer */
  filter: brightness(0) invert(1);
  opacity: 0.85;
}
.footer .logo-ksae { color: var(--color-white); }
.footer .logo-divider { color: rgba(255,255,255,0.3); }
.footer-brand p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  margin-bottom: 20px;
}
.footer-copy {
  font-size: 0.78rem !important;
  color: rgba(255,255,255,0.3) !important;
}
.footer-links h4 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.45);
  margin-bottom: 16px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-white); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .research-grid { grid-template-columns: repeat(2, 1fr); }
  .research-grid-7 { grid-template-columns: repeat(2, 1fr); }
  .research-grid-7 .research-card:nth-child(7) { grid-column: auto; }
  .roadmap-tabs { gap: 4px; }
  .roadmap-tab { padding: 10px 12px; font-size: 0.82rem; }
  .activities-layout { grid-template-columns: 1fr; }
  .activity-featured { padding: 36px 28px; }
  .activity-type-grid { grid-template-columns: repeat(2, 1fr); }
  .ws-program-header,
  .ws-program-row { grid-template-columns: 100px 1fr 160px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-header { margin-bottom: 44px; }

  /* Nav */
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--color-primary);
    flex-direction: column;
    gap: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .nav-links.open { max-height: 320px; }
  .nav-links li { border-bottom: 1px solid rgba(255,255,255,0.1); }
  .nav-links a {
    display: block;
    padding: 16px 24px;
    color: rgba(255,255,255,0.88);
  }
  .nav-links a::after { display: none; }

  /* Stats */
  .stats-container { grid-template-columns: repeat(2, 1fr); }

  /* About */
  .about-grid { grid-template-columns: 1fr; }

  /* Research */
  .research-grid { grid-template-columns: 1fr; }
  .research-grid-7 { grid-template-columns: 1fr; }
  .research-grid-7 .research-card:nth-child(7) { grid-column: auto; }

  /* Roadmap */
  .roadmap-tabs { border-bottom: none; flex-direction: column; gap: 6px; }
  .roadmap-tab { border-bottom: none; border-left: 3px solid transparent; padding: 10px 14px; margin-bottom: 0; }
  .roadmap-tab.active { border-bottom-color: transparent; border-left-color: var(--color-primary); background: rgba(0,48,135,0.05); }

  /* Activities */
  .activity-type-grid { grid-template-columns: 1fr; }
  .ws-year-group { flex-direction: column; gap: 12px; }
  .ws-year-label { writing-mode: horizontal-tb; font-size: 1.1rem; padding-top: 0; min-width: auto; }
  .ws-program-header { display: none; }
  .ws-program-row {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .prog-speaker { text-align: left; }
  .ws-card-header { padding: 16px; }
  .ws-card-desc { padding: 0 16px 16px; }
  .ws-program-row { padding: 14px 16px; }

  /* Committee */
  .committee-grid { grid-template-columns: repeat(2, 1fr); }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }

  /* Footer */
  .footer-container { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .stats-container { grid-template-columns: repeat(2, 1fr); }
  .committee-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: center; }
}