:root {
  --bg: #0B0F1A;
  --bg-soft: #12182B;
  --panel: rgba(18, 24, 43, 0.6);
  --text: #EAF2FF;
  --text-secondary: #A8B2D1;
  --muted: #6B7897;
  --accent: #00F0FF;
  --accent-gradient: linear-gradient(90deg, #00F0FF, #6EFFFF);
  --danger: #FF3D5A;
  --line: rgba(0, 240, 255, 0.2);
  --glow: 0 0 15px rgba(0, 240, 255, 0.4), 0 0 30px rgba(0, 240, 255, 0.2);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

.loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg);
  display: grid;
  place-items: center;
  gap: 0.8rem;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loader p {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.talisman {
  width: 64px;
  height: 64px;
  border: 2px solid transparent;
  border-image: var(--accent-gradient) 1;
  border-radius: 50%;
  position: relative;
  animation: spin 1.8s linear infinite;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.5), 0 0 40px rgba(0, 240, 255, 0.2);
}

.talisman::before,
.talisman::after {
  content: "";
  position: absolute;
  background: var(--accent-gradient);
}

.talisman::before {
  width: 2px;
  height: 100%;
  left: 50%;
  transform: translateX(-50%);
}

.talisman::after {
  height: 2px;
  width: 100%;
  top: 50%;
  transform: translateY(-50%);
}

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

.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  background: rgba(18, 24, 43, 0.5);
}

.brand {
  font-family: "Orbitron", sans-serif;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 10px;
  padding: 0.35rem 0.6rem;
}

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

.nav-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.3s ease-in-out;
}

.nav-menu a:hover {
  color: var(--accent);
}

.section {
  width: min(1100px, 92%);
  margin: 0 auto;
  padding: 4.8rem 0;
}

.hero {
  position: relative;
  min-height: calc(100vh - 70px);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: -12%;
  background: radial-gradient(circle at 20% 30%, rgba(0, 240, 255, 0.12), transparent 44%), radial-gradient(circle at 80% 60%, rgba(0, 240, 255, 0.08), transparent 44%);
  transform: translateY(0);
  will-change: transform;
}

.smoke {
  position: absolute;
  inset: auto 0 0;
  height: 140px;
  background: radial-gradient(circle at 30% 20%, rgba(0, 240, 255, 0.08), transparent 50%), radial-gradient(circle at 70% 40%, rgba(0, 240, 255, 0.06), transparent 50%);
  opacity: 0.35;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.insignia {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(2rem, 6.5vw, 4.5rem);
  margin: 0.4rem 0;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 18px rgba(0, 240, 255, 0.45));
}

.subtitle {
  max-width: 650px;
  margin: 0 auto 1.6rem;
  color: var(--text-secondary);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem auto;
}

.stat-card,
.glass-panel,
.event-card,
.modal-card,
.qr-placeholder {
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  transition: transform 0.3s ease-in-out, border-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.stat-card {
  padding: 1rem;
}

.stat-card h3 {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 600;
}

.stat-card p {
  margin: 0.35rem 0 0;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.stat-card:hover {
  border-color: var(--accent);
  box-shadow: var(--glow);
  transform: translateY(-5px);
}

/* Prize Pool card highlight */
.stat-card:nth-child(2) p {
  color: var(--danger);
}

/* Countdown */
.countdown {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin: 1.5rem 0;
}

.cd-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 60px;
}

.cd-num {
  font-family: "Orbitron", sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.cd-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-top: 0.3rem;
}

.cd-sep {
  font-family: "Orbitron", sans-serif;
  font-size: 1.5rem;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.72rem 1.2rem;
  cursor: pointer;
  font: inherit;
  transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out, border-color 0.3s ease-in-out, background 0.3s ease-in-out, color 0.3s ease-in-out;
}

.btn-outline {
  border: 2px solid var(--accent);
  color: var(--accent);
  background: transparent;
}

.btn-outline:hover {
  background: var(--accent);
  color: var(--bg);
  box-shadow: var(--glow);
  transform: translateY(-5px);
}

.combat-btn {
  border: none;
  background: var(--accent-gradient);
  color: var(--bg);
  font-weight: 600;
}

.combat-btn:hover {
  transform: translateY(-5px);
  box-shadow: var(--glow);
}

.combat-btn:active {
  transform: translateY(-2px);
}

/* Register button danger hover accent */
.register-section .combat-btn:hover {
  background: var(--danger);
  box-shadow: 0 0 15px rgba(255, 61, 90, 0.4), 0 0 30px rgba(255, 61, 90, 0.2);
}

.dojo-divider {
  width: min(1100px, 92%);
  margin: 0 auto;
  height: 1px;
  background: var(--accent);
  opacity: 0.3;
  border: none;
  position: relative;
}

.dojo-divider::after {
  content: "✦";
  position: absolute;
  top: -0.78rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--accent);
  opacity: 1;
}

h2 {
  font-family: "Orbitron", sans-serif;
  margin: 0 0 0.85rem;
  letter-spacing: 0.06em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.section-subtitle {
  color: var(--text-secondary);
  margin-top: 0;
}

.card-grid,
.coord-grid,
.register-grid {
  display: grid;
  gap: 1rem;
}

.card-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* --- Event Groups --- */
.event-group {
  display: block;
}

.event-group.hidden-group {
  display: none;
}

.group-heading {
  font-family: "Orbitron", sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
  /* reset h2 gradient inheritance */
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: var(--accent);
  background-clip: unset;
}

.group-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

/* --- Filter Tabs --- */
.filter-tabs {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.filter-tab {
  font-family: "Orbitron", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.55rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease-in-out;
}

.filter-tab:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.filter-tab.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

/* --- Event Card (reference layout) --- */
.event-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  text-align: left;
  color: var(--text);
  cursor: default;
  overflow: hidden;
  position: relative;
}

.event-card::after {
  display: none;
}

.event-card:hover {
  transform: translateY(-10px) scale(1.03);
  border-color: var(--accent);
  box-shadow: var(--glow);
  z-index: 10;
}

.event-poster {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.08) 0%, rgba(18, 24, 43, 0.9) 60%), var(--bg-soft);
  display: grid;
  place-items: center;
  border-radius: var(--radius) var(--radius) 0 0;
  position: relative;
  overflow: hidden;
}

.event-poster::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 3px, rgba(0, 240, 255, 0.03) 3px, rgba(0, 240, 255, 0.03) 4px),
    repeating-linear-gradient(90deg, transparent, transparent 3px, rgba(0, 240, 255, 0.03) 3px, rgba(0, 240, 255, 0.03) 4px);
  pointer-events: none;
}

.poster-label {
  font-family: "Orbitron", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
  text-align: center;
  text-shadow: 0 0 12px rgba(0, 240, 255, 0.35);
  z-index: 1;
}

.event-info {
  padding: 1rem 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.event-name {
  font-family: "Orbitron", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 0.3rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text);
  /* Reset h2-gradient */
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: unset;
  background-clip: unset;
}

.event-tag {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.event-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0 0 auto;
  padding-bottom: 1rem;
}

.event-explore {
  font-family: "Orbitron", sans-serif;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  width: 100%;
  padding: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease-in-out;
}

.event-explore:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  box-shadow: var(--glow);
}

.event-card.hidden-card {
  display: none;
}

.coord-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.glass-panel {
  padding: 1rem;
}

.glass-panel:hover {
  border-color: var(--accent);
  box-shadow: var(--glow);
  transform: translateY(-5px);
}

.glass-panel h3 {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-size: 0.95rem;
}

.glass-panel p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

.register-grid {
  grid-template-columns: 1.2fr auto;
  align-items: center;
}

.qr-placeholder {
  min-height: 180px;
  display: grid;
  place-items: center;
  text-align: center;
  border-style: dashed;
}

.qr-placeholder:hover {
  border-color: var(--accent);
  box-shadow: var(--glow);
  transform: translateY(-5px);
}

.qr-placeholder span {
  font-family: "Orbitron", sans-serif;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.qr-placeholder small {
  color: var(--muted);
}

/* ═══════ Full-Page Event Detail ═══════ */
.event-detail {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: var(--bg);
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease-in-out;
}

.event-detail.open {
  opacity: 1;
  pointer-events: auto;
}

.detail-inner {
  width: min(1100px, 92%);
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.detail-back {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  margin-bottom: 1.5rem;
  transition: color 0.3s ease-in-out;
}

.detail-back:hover {
  color: var(--accent);
}

.detail-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 2.5rem;
  align-items: start;
}

.detail-poster {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.08) 0%, rgba(18, 24, 43, 0.9) 60%), var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.detail-poster::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 3px, rgba(0, 240, 255, 0.03) 3px, rgba(0, 240, 255, 0.03) 4px),
    repeating-linear-gradient(90deg, transparent, transparent 3px, rgba(0, 240, 255, 0.03) 3px, rgba(0, 240, 255, 0.03) 4px);
  pointer-events: none;
}

.detail-poster-label {
  font-family: "Orbitron", sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--text);
  text-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
  z-index: 1;
  padding: 1rem;
  line-height: 1.4;
}

.detail-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--bg);
  background: var(--accent);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  margin-bottom: 0.4rem;
}

.detail-title {
  font-family: "Orbitron", sans-serif;
  font-size: 1.8rem;
  margin: 0.3rem 0 1.2rem;
  color: var(--text);
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: var(--text);
  background-clip: unset;
  display: block;
}

.detail-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.meta-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  background: var(--panel);
}

.meta-card .meta-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.meta-card .meta-value {
  font-size: 0.92rem;
  color: var(--text);
  font-weight: 600;
}

.detail-section {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.2rem 1.3rem;
  background: var(--panel);
  backdrop-filter: blur(10px);
  margin-bottom: 1rem;
}

.detail-section h3 {
  font-family: "Orbitron", sans-serif;
  font-size: 0.95rem;
  margin: 0 0 0.7rem;
  color: var(--text);
  letter-spacing: 0.04em;
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: var(--text);
  background-clip: unset;
}

.detail-section p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
  white-space: pre-line;
}

.detail-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.detail-section ul li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.45rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.detail-section ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.detail-register {
  margin-top: 1.2rem;
}

@media (max-width: 760px) {
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .detail-poster {
    aspect-ratio: 4 / 3;
  }

  .detail-title {
    font-size: 1.3rem;
  }

  .detail-meta {
    grid-template-columns: 1fr;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (max-width: 900px) {
  .group-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter-tabs {
    flex-wrap: wrap;
  }

  .register-grid {
    grid-template-columns: 1fr;
    justify-items: start;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1rem;
    left: 1rem;
    background: rgba(18, 24, 43, 0.92);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.8rem;
    display: none;
    flex-direction: column;
  }

  .nav-menu.open {
    display: flex;
  }

  .stat-grid,
  .group-grid,
  .coord-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3.7rem 0;
  }
}