/* CiteYourSource — Dark mode styles */
:root {
  --bg: #080d1a;
  --bg-2: #0d1424;
  --bg-card: #111827;
  --bg-card-hover: #1a2235;
  --border: #1e2d45;
  --border-bright: #2d4060;
  --cyan: #06b6d4;
  --cyan-dim: #0891b2;
  --purple: #8b5cf6;
  --gold: #f59e0b;
  --green: #10b981;
  --red: #ef4444;
  --text: #f1f5f9;
  --text-2: #94a3b8;
  --text-3: #475569;
  --rank-gold: #f59e0b;
  --rank-silver: #94a3b8;
  --rank-bronze: #b45309;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  font-size: 18px;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: #67e8f9; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 13, 26, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 64px;
}

.nav-logo {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
}

.nav-logo span { color: var(--cyan); }

.nav-links {
  display: flex;
  gap: 0.25rem;
  flex: 1;
}

.nav-link {
  padding: 0.375rem 0.875rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all 0.15s;
}

.nav-link:hover, .nav-link.active {
  color: var(--text);
  background: var(--bg-card);
}

.nav-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-left: auto;
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-2);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-size: 0.925rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--cyan);
  color: #000;
}
.btn-primary:hover { background: #22d3ee; color: #000; }

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-bright);
  color: var(--text-2);
}
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
}
.btn-ghost:hover { color: var(--text); background: var(--bg-card); }

.btn-sm { padding: 0.375rem 0.875rem; font-size: 0.825rem; }
.btn-lg { padding: 0.75rem 2rem; font-size: 1rem; }
.btn-xl { padding: 0.875rem 2.5rem; font-size: 1.05rem; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-sm {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.card-hover:hover {
  border-color: var(--border-bright);
  background: var(--bg-card-hover);
  transition: all 0.15s;
}

/* Score Badge */
.score-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 54px;
  height: 54px;
  border-radius: 10px;
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -1px;
}

.score-badge-sm {
  min-width: 40px;
  height: 40px;
  font-size: 1rem;
  border-radius: 8px;
}

.score-high { background: rgba(16, 185, 129, 0.15); color: #10b981; border: 1.5px solid rgba(16, 185, 129, 0.3); }
.score-mid { background: rgba(245, 158, 11, 0.15); color: #f59e0b; border: 1.5px solid rgba(245, 158, 11, 0.3); }
.score-low { background: rgba(239, 68, 68, 0.15); color: #ef4444; border: 1.5px solid rgba(239, 68, 68, 0.3); }
.score-pending { background: rgba(148, 163, 184, 0.1); color: #94a3b8; border: 1.5px solid rgba(148, 163, 184, 0.2); font-size: 0.75rem !important; }

/* Avatar */
.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.avatar-lg {
  width: 56px;
  height: 56px;
  font-size: 1.2rem;
}

/* Status indicator */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-pending { background: var(--gold); animation: pulse 2s infinite; }
.status-scored { background: var(--green); }
.status-error { background: var(--red); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Rank badges */
.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 800;
}

.rank-1 { background: rgba(245, 158, 11, 0.2); color: #f59e0b; border: 1.5px solid rgba(245, 158, 11, 0.4); }
.rank-2 { background: rgba(148, 163, 184, 0.15); color: #94a3b8; border: 1.5px solid rgba(148, 163, 184, 0.3); }
.rank-3 { background: rgba(180, 83, 9, 0.2); color: #b45309; border: 1.5px solid rgba(180, 83, 9, 0.3); }
.rank-other { background: rgba(71, 85, 105, 0.2); color: #64748b; border: 1.5px solid rgba(71, 85, 105, 0.2); }

/* Form elements */
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-label { font-size: 0.875rem; font-weight: 600; color: var(--text-2); }

.form-input, .form-textarea {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.15s;
  width: 100%;
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.form-textarea { resize: vertical; min-height: 120px; }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-3); }

.char-counter { font-size: 0.8rem; color: var(--text-3); text-align: right; }
.char-counter.warn { color: var(--gold); }
.char-counter.danger { color: var(--red); }

/* Source inputs */
.source-input-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.source-domain-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--cyan);
  font-weight: 500;
}

/* Claim card */
.claim-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  transition: all 0.15s;
}

.claim-card:hover {
  border-color: var(--border-bright);
  background: var(--bg-card-hover);
}

.claim-content {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  margin: 0.75rem 0;
}

.claim-feedback {
  font-size: 0.875rem;
  color: var(--text-2);
  padding: 0.75rem 1rem;
  background: var(--bg-2);
  border-radius: 8px;
  border-left: 3px solid var(--cyan);
  margin-top: 0.75rem;
}

.source-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 0.75rem;
}

.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.6rem;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--cyan);
}

.source-chip:hover { background: rgba(6, 182, 212, 0.15); }

/* Sort tabs */
.sort-tabs {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.25rem;
}

.sort-tab {
  padding: 0.4rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  background: none;
}

.sort-tab:hover { color: var(--text); }
.sort-tab.active { background: var(--bg-card); color: var(--text); }

/* Hero */
.hero {
  padding: 5rem 1.5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(6, 182, 212, 0.12) 0%, transparent 60%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: 100px;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 1.25rem;
}

.hero-title .highlight { color: var(--cyan); }
.hero-title .highlight-2 { color: var(--purple); }

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-2);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

/* Stats bar */
.stats-bar {
  display: flex;
  gap: 3rem;
  justify-content: center;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: -1px;
  color: var(--text);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* Section */
.section { padding: 4rem 0; }
.section-title { font-size: 1.75rem; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 0.5rem; }
.section-subtitle { color: var(--text-2); font-size: 1rem; margin-bottom: 2rem; }

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.feature-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem; }
.feature-desc { color: var(--text-2); font-size: 0.9rem; line-height: 1.6; }

/* Arena header */
.arena-header {
  background: linear-gradient(135deg, var(--bg-2) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  padding: 2rem 1.5rem;
}

.arena-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.75rem;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.75rem;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 5rem 1rem 1rem;
  overflow-y: auto;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-bright);
  border-radius: 16px;
  padding: 2rem;
  width: 100%;
  max-width: 560px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
  animation: modal-in 0.2s ease;
}

@keyframes modal-in {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Alert */
.alert {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}
.alert-error { background: rgba(239, 68, 68, 0.1); border: 1px solid rgba(239, 68, 68, 0.3); color: #fca5a5; }
.alert-success { background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.3); color: #6ee7b7; }
.alert-info { background: rgba(6, 182, 212, 0.1); border: 1px solid rgba(6, 182, 212, 0.25); color: #67e8f9; }

/* Divider */
.divider {
  height: 1px;
  background: var(--border);
  margin: 1.5rem 0;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-3);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state h3 { font-size: 1.1rem; color: var(--text-2); margin-bottom: 0.5rem; }
.empty-state p { font-size: 0.9rem; }

/* Loading spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255,255,255,0.2);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 768px) {
  body { font-size: 16px; }
  .nav-links { display: none; }
  .hero { padding: 3rem 1rem 2.5rem; }
  .stats-bar { gap: 2rem; }
  .modal-overlay { padding: 1rem; align-items: flex-end; }
  .modal { max-width: 100%; border-radius: 16px 16px 0 0; }
}