/* CSS Reset & Variables */
:root {
  --bg-main: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #1c2744;
  --border-subtle: #243256;
  --border-glow: #3b82f6;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --cyan: #06b6d4;
  --cyan-glow: rgba(6, 182, 212, 0.4);
  --rose: #f43f5e;
  --rose-glow: rgba(244, 63, 94, 0.4);
  --emerald: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.4);
  --amber: #f59e0b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 85% 20%, rgba(6, 182, 212, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(244, 63, 94, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* Header & Navigation */
header.sticky-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(11, 15, 25, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.025em;
}

.logo-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.6rem;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.5);
}

.logo-icon svg {
  width: 1.35rem;
  height: 1.35rem;
  fill: white;
}

.logo-text span {
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.925rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #38bdf8;
}

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

.btn-icon {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  color: var(--text-main);
  border-color: var(--border-glow);
}

/* Hero Section */
.hero-section {
  padding: 3.5rem 0 2rem;
  text-align: center;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.4);
  color: #818cf8;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  font-size: 0.825rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}

.badge-pill span.pulse-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: #22c55e;
  box-shadow: 0 0 8px #22c55e;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.text-gradient {
  background: linear-gradient(135deg, #f8fafc 20%, #38bdf8 60%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  max-width: 780px;
  margin: 0 auto 2.25rem;
  color: var(--text-muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.6;
}

/* Game Arena Wrapper */
.game-arena-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1.5rem;
  padding: 1.75rem;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6), 0 0 50px rgba(99, 102, 241, 0.1);
  margin-bottom: 3.5rem;
  position: relative;
}

.game-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 1.75rem;
}

.mode-tabs {
  display: flex;
  background: rgba(11, 15, 25, 0.6);
  padding: 0.35rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-subtle);
  gap: 0.25rem;
}

.mode-tab-btn {
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.mode-tab-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.4rem 0.85rem;
  border-radius: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn.active {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--cyan);
  color: #38bdf8;
}

.stats-tracker {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: rgba(11, 15, 25, 0.5);
  padding: 0.5rem 1.25rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-subtle);
}

.stat-box { text-align: center; }
.stat-label { font-size: 0.725rem; text-transform: uppercase; color: var(--text-dim); font-weight: 700; }
.stat-value { font-size: 1.35rem; font-weight: 800; color: #38bdf8; }
.stat-value.gold { color: #fbbf24; }

/* Arena Matchup Cards */
.arena-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: stretch;
  min-height: 440px;
}

.character-card {
  background: linear-gradient(180deg, rgba(28, 39, 68, 0.5) 0%, rgba(19, 27, 46, 0.8) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.character-card.base-card { border-color: rgba(99, 102, 241, 0.4); }
.character-card.challenger-card { border-color: rgba(6, 182, 212, 0.4); }

.card-glow {
  position: absolute;
  top: -50px;
  left: 50%;
  transform: translateX(-50%);
  width: 150px;
  height: 150px;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  opacity: 0.3;
}

.avatar-wrapper {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.75rem;
  font-weight: 900;
  color: white;
  margin-bottom: 1.25rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  position: relative;
  border: 3px solid rgba(255, 255, 255, 0.15);
}

.char-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.char-name { font-size: 1.6rem; font-weight: 800; line-height: 1.2; margin-bottom: 0.35rem; color: white; }
.char-franchise { font-size: 0.95rem; color: #38bdf8; font-weight: 600; margin-bottom: 1.25rem; }

.post-count-box {
  margin-top: auto;
  width: 100%;
  padding: 1.25rem;
  border-radius: 0.85rem;
  background: rgba(11, 15, 25, 0.7);
  border: 1px solid var(--border-subtle);
}

.post-count-label { font-size: 0.75rem; text-transform: uppercase; color: var(--text-dim); font-weight: 700; margin-bottom: 0.25rem; }
.post-count-number { font-size: 2.25rem; font-weight: 900; color: #38bdf8; }
.post-count-number.mystery { color: #a855f7; animation: bounce 1.5s infinite; }

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.vs-divider { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem; }
.vs-circle {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #f43f5e);
  color: white;
  font-size: 1.25rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 25px rgba(99, 102, 241, 0.6);
  position: relative;
}

.guess-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; width: 100%; margin-top: 1rem; }

.btn-guess {
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  border: none;
  font-weight: 800;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-higher {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-lower {
  background: linear-gradient(135deg, #f43f5e, #e11d48);
  color: white;
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.4);
}

.btn-guess:disabled { opacity: 0.6; cursor: not-allowed; }

.feedback-banner {
  margin-top: 1.5rem;
  padding: 1rem 1.5rem;
  border-radius: 0.85rem;
  text-align: center;
  font-weight: 700;
  font-size: 1.1rem;
  display: none;
}

.feedback-banner.correct {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--emerald);
  color: #34d399;
}

.feedback-banner.wrong {
  display: block;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid var(--rose);
  color: #fb7185;
}

/* Features Ribbon */
.features-ribbon {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 4rem;
}

.feature-card {
  background: rgba(19, 27, 46, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 1.5rem;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover { transform: translateY(-4px); border-color: var(--border-glow); }
.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1rem;
}

/* Comparison Tool */
.comparison-tool-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  padding: 2rem;
  margin-bottom: 3.5rem;
}

.comparison-selects {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 2rem;
}

.select-group label {
  display: block;
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.custom-select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  color: var(--text-main);
  font-size: 1rem;
  outline: none;
}

.comparison-result-card {
  background: rgba(11, 15, 25, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 1.75rem;
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}

.comp-badge-winner {
  display: inline-block;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid var(--emerald);
  color: #34d399;
  margin-bottom: 0.75rem;
}

.comp-diff-bar {
  height: 10px;
  width: 100%;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 9999px;
  overflow: hidden;
  display: flex;
}

.comp-bar-fill-left { height: 100%; background: linear-gradient(90deg, #6366f1, #38bdf8); }
.comp-bar-fill-right { height: 100%; background: linear-gradient(90deg, #f43f5e, #fbbf24); }

/* Database Table */
.database-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  padding: 1.75rem;
  margin-bottom: 4rem;
}

.database-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.search-input-wrap { position: relative; flex: 1; min-width: 260px; }
.search-input {
  width: 100%;
  padding: 0.8rem 1rem 0.8rem 2.75rem;
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  color: var(--text-main);
  outline: none;
}

.search-icon { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); color: var(--text-dim); }

.table-container { overflow-x: auto; }
table.character-table { width: 100%; border-collapse: collapse; text-align: left; }
table.character-table th {
  padding: 1rem 1.25rem;
  background: rgba(11, 15, 25, 0.6);
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
  border-bottom: 1px solid var(--border-subtle);
}

table.character-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(36, 50, 86, 0.4);
  font-size: 0.95rem;
}

.tier-badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 0.4rem; font-size: 0.75rem; font-weight: 800; }
.tier-s { background: rgba(236, 72, 153, 0.2); color: #f472b6; border: 1px solid #ec4899; }
.tier-a { background: rgba(139, 92, 246, 0.2); color: #c084fc; border: 1px solid #8b5cf6; }
.tier-b { background: rgba(6, 182, 212, 0.2); color: #67e8f9; border: 1px solid #06b6d4; }
.tier-c { background: rgba(245, 158, 11, 0.2); color: #fcd34d; border: 1px solid #f59e0b; }

/* Calculator Widget */
.calculator-widget {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(6, 182, 212, 0.1));
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  padding: 2.25rem;
  margin-bottom: 4rem;
}

.accuracy-slider { width: 100%; height: 8px; border-radius: 4px; background: #243256; outline: none; cursor: pointer; }
.prob-cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1rem; text-align: center; margin-top: 1.5rem; }
.prob-card { background: rgba(11, 15, 25, 0.7); border: 1px solid var(--border-subtle); border-radius: 0.85rem; padding: 1.25rem 1rem; }
.prob-label { font-size: 0.8rem; font-weight: 700; color: var(--text-dim); margin-bottom: 0.35rem; }
.prob-val { font-size: 1.5rem; font-weight: 900; color: #38bdf8; }

/* SEO Article */
.seo-article {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1.5rem;
  padding: 3.5rem 2.5rem;
  margin-bottom: 4rem;
}

.seo-article h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 800;
  color: white;
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.seo-article h3 { font-size: 1.35rem; font-weight: 700; color: #38bdf8; margin-top: 2rem; margin-bottom: 0.85rem; }
.seo-article p { color: #cbd5e1; font-size: 1.05rem; margin-bottom: 1.35rem; line-height: 1.8; }
.seo-article ul, .seo-article ol { margin-left: 1.5rem; margin-bottom: 1.5rem; color: #cbd5e1; }
.seo-article li { margin-bottom: 0.75rem; line-height: 1.7; }

.callout-box {
  background: rgba(99, 102, 241, 0.1);
  border-left: 4px solid var(--primary);
  padding: 1.5rem 1.75rem;
  border-radius: 0 0.85rem 0.85rem 0;
  margin: 2rem 0;
}

.callout-box h4 { font-size: 1.1rem; color: white; margin-bottom: 0.5rem; }
.callout-box p { margin-bottom: 0; color: #cbd5e1; }

.matrix-table-wrap { overflow-x: auto; margin: 2rem 0; }
table.matrix-table { width: 100%; border-collapse: collapse; border-radius: 0.75rem; overflow: hidden; }
table.matrix-table th, table.matrix-table td { padding: 1rem 1.25rem; border: 1px solid var(--border-subtle); text-align: left; }
table.matrix-table th { background: rgba(11, 15, 25, 0.8); color: #38bdf8; font-weight: 700; }
table.matrix-table tr:nth-child(even) { background: rgba(11, 15, 25, 0.3); }

/* FAQ Accordion */
.faq-container { max-width: 900px; margin: 0 auto; }
.faq-item {
  background: rgba(11, 15, 25, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 0.85rem;
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.35rem 1.5rem;
  background: transparent;
  border: none;
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon { font-size: 1.25rem; transition: transform 0.3s ease; color: #38bdf8; }
.faq-item.active .faq-icon { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease-out; padding: 0 1.5rem; color: #cbd5e1; }
.faq-item.active .faq-answer { max-height: 350px; padding-bottom: 1.5rem; }

/* Modal & Toast */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.modal-backdrop.show { display: flex; }
.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 1.5rem;
  max-width: 500px;
  width: 100%;
  padding: 2.25rem;
  text-align: center;
}

.modal-grid-preview {
  background: rgba(11, 15, 25, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.25rem;
  font-family: monospace;
  font-size: 1.15rem;
  margin: 1.5rem 0;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: white;
  border: none;
  padding: 0.9rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  width: 100%;
  margin-bottom: 0.5rem;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 0.85rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
}

.toast-msg {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #10b981;
  color: white;
  padding: 0.85rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 700;
  z-index: 150;
  display: none;
}

/* Footer */
footer.site-footer {
  background: #070a12;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 3rem; }
.footer-col h5 { font-size: 0.9rem; font-weight: 800; text-transform: uppercase; color: white; margin-bottom: 1.25rem; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.65rem; }
.footer-col a { color: var(--text-dim); text-decoration: none; font-size: 0.875rem; }
.footer-col a:hover { color: #38bdf8; }

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(36, 50, 86, 0.4);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .arena-grid { grid-template-columns: 1fr; }
  .vs-divider { flex-direction: row; }
  .comparison-selects, .comparison-result-card { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .guess-buttons { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}