/* Landing, Showcase & 3-Category Leaderboard with Moving Graphic */

/* Hero Section */
.hero-section {
  text-align: center;
  padding: 4rem 1rem 3rem;
  position: relative;
  overflow: hidden;
}

.hero-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  max-width: 800px;
  margin: 0 auto 1.25rem;
}

.hero-title .highlight-gradient {
  background: linear-gradient(135deg, #111827 0%, #4B5563 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

/* Doodle Art Wrapper & Floating Card */
.hero-visual-wrapper {
  position: relative;
  max-width: 680px;
  margin: 0 auto 3rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.doodle-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
  opacity: 0.85;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-floating-card {
  position: relative;
  z-index: 2;
  background: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: var(--radius-xl);
  padding: 1.75rem 2rem;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 0, 0, 0.04);
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-floating-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 25px 50px -15px rgba(0, 0, 0, 0.15);
}

.floating-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.floating-card-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.quick-task-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quick-task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.quick-task-item:hover {
  background: #fff;
  border-color: #D1D5DB;
  box-shadow: var(--shadow-xs);
}

.quick-task-item.done {
  background: var(--color-emerald-light);
  border-color: #A7F3D0;
  color: #065F46;
  text-decoration: line-through;
  opacity: 0.85;
}

.quick-task-left {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.quick-task-icon {
  font-size: 1.1rem;
}

/* ============================================================
   3-CATEGORY TOP 20 LIVE LEADERBOARD WITH MOVING GRAPHIC
============================================================ */
.leaderboard-section {
  padding: 4rem 1rem 3rem;
  max-width: 1140px;
  margin: 0 auto;
}

.leaderboard-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.category-nav-pills {
  display: inline-flex;
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 0.3rem;
  border-radius: var(--radius-full);
  margin-top: 1.25rem;
  gap: 0.35rem;
}

.category-pill-btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.category-pill-btn:hover {
  color: var(--text-primary);
}

.category-pill-btn.active {
  background: var(--brand-black);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* 1st, 2nd, 3rd Place Podium Display */
.podium-container {
  display: grid;
  grid-template-columns: 1fr 1.15fr 1fr;
  gap: 1.5rem;
  align-items: end;
  max-width: 900px;
  margin: 0 auto 3rem;
}

.podium-card {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 2rem 1.5rem;
  text-align: center;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.podium-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.podium-rank-badge {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: -44px auto 1rem;
  box-shadow: var(--shadow-md);
  border: 3px solid #FFFFFF;
}

/* 1st Place Gold */
.podium-1st {
  background: linear-gradient(180deg, #FFFBEB 0%, #FFFFFF 100%);
  border-color: #FDE68A;
  box-shadow: 0 12px 30px rgba(245, 158, 11, 0.15);
  transform: translateY(-10px);
}
.podium-1st:hover {
  transform: translateY(-14px);
}
.podium-1st .podium-rank-badge {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  color: #FFF;
}

/* 2nd Place Silver */
.podium-2nd {
  background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
  border-color: #E2E8F0;
}
.podium-2nd .podium-rank-badge {
  background: linear-gradient(135deg, #94A3B8 0%, #64748B 100%);
  color: #FFF;
}

/* 3rd Place Bronze */
.podium-3rd {
  background: linear-gradient(180deg, #FFF7ED 0%, #FFFFFF 100%);
  border-color: #FED7AA;
}
.podium-3rd .podium-rank-badge {
  background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
  color: #FFF;
}

.podium-student-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.podium-student-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.podium-score-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1.15rem;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 1.05rem;
  font-family: var(--font-mono);
}

.podium-quote {
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin-top: 1rem;
  line-height: 1.5;
  background: rgba(0,0,0,0.02);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
}

/* 4th ~ 20th Place Moving Graphic Marquee / Ticker */
.ticker-card-container {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.ticker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.ticker-track-wrapper {
  overflow: hidden;
  position: relative;
  padding: 0.5rem 0;
}

.ticker-track-wrapper::before, .ticker-track-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50px;
  z-index: 2;
  pointer-events: none;
}
.ticker-track-wrapper::before {
  left: 0;
  background: linear-gradient(90deg, #FFFFFF 0%, transparent 100%);
}
.ticker-track-wrapper::after {
  right: 0;
  background: linear-gradient(-90deg, #FFFFFF 0%, transparent 100%);
}

.ticker-scroll-row {
  display: flex;
  gap: 1rem;
  animation: scrollTicker 35s linear infinite;
  width: max-content;
}

.ticker-scroll-row:hover {
  animation-play-state: paused;
}

@keyframes scrollTicker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ticker-student-chip {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.ticker-student-chip:hover {
  background: #FFFFFF;
  border-color: #94A3B8;
  transform: translateY(-2px);
  box-shadow: var(--shadow-xs);
}

.ticker-rank-pill {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand-black);
  color: #FFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.75rem;
}

.ticker-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.ticker-score {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--color-amber);
  font-family: var(--font-mono);
}

/* Full 4~20 Grid View */
.rank-grid-4to20 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.rank-row-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.rank-row-item:hover {
  background: #FFFFFF;
  border-color: var(--border-light);
  box-shadow: var(--shadow-xs);
}

/* Dark Contrast Feature Section ("Why Collect Insights?") */
.dark-feature-section {
  background: var(--bg-dark);
  color: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 4rem 2.5rem;
  margin: 3.5rem 0;
  box-shadow: var(--shadow-dark);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.dark-feature-header {
  max-width: 650px;
  margin: 0 auto 3rem;
}

.dark-feature-subtitle {
  color: var(--text-inverse-muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: block;
}

.dark-feature-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
  color: #FFFFFF;
}

.dark-feature-desc {
  color: var(--text-inverse-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.dark-grid-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  text-align: left;
}

.dark-grid-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform 0.25s ease, background 0.25s ease;
}

.dark-grid-card:hover {
  background: var(--bg-dark-card-hover);
  border-color: #434657;
  transform: translateY(-3px);
}

.dark-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
}

.icon-blue { background: rgba(59, 130, 246, 0.18); color: #60A5FA; }
.icon-coral { background: rgba(239, 68, 68, 0.18); color: #F87171; }
.icon-amber { background: rgba(245, 158, 11, 0.18); color: #FBBF24; }
.icon-emerald { background: rgba(16, 185, 129, 0.18); color: #34D399; }

.dark-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: #FFFFFF;
}

.dark-card-desc {
  font-size: 0.875rem;
  color: #9CA3AF;
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 860px) {
  .podium-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .dark-grid-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-visual-wrapper {
    margin-top: 2rem !important;
  }
}