:root {
  --bg-dark: #0b0d12;
  --panel-bg: #131722;
  --panel-border: #1e2638;
  --neon-green: #00ff66;
  --neon-cyan: #00e5ff;
  --neon-magenta: #ff007f;
  --neon-gold: #ffd700;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --font-code: 'Fira Code', monospace, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

#particleCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
}

#app {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
  width: 100%;
}

.logo-badge {
  display: inline-block;
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.3);
  padding: 0.35rem 0.85rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.app-title {
  font-family: var(--font-code);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  color: var(--neon-green);
  text-shadow: 0 0 15px rgba(0, 255, 102, 0.4);
  letter-spacing: -1px;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.app-subtitle {
  font-family: var(--font-code);
  font-size: 1.1rem;
  color: var(--neon-cyan);
  opacity: 0.9;
}

.mode-toggle-bar {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 50;
}

.cyber-btn-sm {
  background: var(--panel-bg);
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  font-family: var(--font-code);
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.cyber-btn-sm:hover {
  background: var(--neon-cyan);
  color: var(--bg-dark);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.cyber-btn {
  background: rgba(19, 23, 34, 0.92);
  border: 2px solid var(--neon-green);
  color: var(--neon-green);
  font-family: var(--font-code);
  font-weight: 700;
  font-size: 1.1rem;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.15s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 4px 0 rgba(0, 255, 102, 0.35), 0 0 12px rgba(0, 255, 102, 0.15);
  animation: btnPulse 2.5s ease-in-out infinite;
}

.cyber-btn::after {
  margin-left: 0.5rem;
  transition: transform 0.2s ease;
  display: inline-block;
}

@keyframes btnPulse {
  0%, 100% { box-shadow: 0 4px 0 rgba(0, 255, 102, 0.35), 0 0 12px rgba(0, 255, 102, 0.2); }
  50% { box-shadow: 0 4px 0 rgba(0, 255, 102, 0.35), 0 0 20px rgba(0, 255, 102, 0.45); }
}

.cyber-btn:hover {
  background: var(--neon-green);
  color: var(--bg-dark);
  box-shadow: 0 6px 0 rgba(0, 255, 102, 0.45), 0 0 25px rgba(0, 255, 102, 0.5);
  transform: translateY(-2px) scale(1.05);
}

.cyber-btn:hover::after {
  transform: translateX(4px);
}

.cyber-btn:active {
  box-shadow: 0 1px 0 rgba(0, 255, 102, 0.35), 0 0 8px rgba(0, 255, 102, 0.3);
  transform: translateY(2px) scale(0.98);
}

.cyber-btn.cyan {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 4px 0 rgba(0, 229, 255, 0.35), 0 0 12px rgba(0, 229, 255, 0.15);
  animation-name: btnPulseCyan;
}

@keyframes btnPulseCyan {
  0%, 100% { box-shadow: 0 4px 0 rgba(0, 229, 255, 0.35), 0 0 12px rgba(0, 229, 255, 0.2); }
  50% { box-shadow: 0 4px 0 rgba(0, 229, 255, 0.35), 0 0 20px rgba(0, 229, 255, 0.45); }
}

.cyber-btn.cyan:hover {
  background: var(--neon-cyan);
  color: var(--bg-dark);
  box-shadow: 0 6px 0 rgba(0, 229, 255, 0.45), 0 0 25px rgba(0, 229, 255, 0.5);
  transform: translateY(-2px) scale(1.05);
}

.cyber-btn.cyan:active {
  box-shadow: 0 1px 0 rgba(0, 229, 255, 0.35), 0 0 8px rgba(0, 229, 255, 0.3);
  transform: translateY(2px) scale(0.98);
}

.cyber-btn.gold {
  border-color: var(--neon-gold);
  color: var(--neon-gold);
  box-shadow: 0 4px 0 rgba(255, 215, 0, 0.35), 0 0 12px rgba(255, 215, 0, 0.15);
  animation-name: btnPulseGold;
}

@keyframes btnPulseGold {
  0%, 100% { box-shadow: 0 4px 0 rgba(255, 215, 0, 0.35), 0 0 12px rgba(255, 215, 0, 0.2); }
  50% { box-shadow: 0 4px 0 rgba(255, 215, 0, 0.35), 0 0 20px rgba(255, 215, 0, 0.45); }
}

.cyber-btn.gold:hover {
  background: var(--neon-gold);
  color: var(--bg-dark);
  box-shadow: 0 6px 0 rgba(255, 215, 0, 0.45), 0 0 25px rgba(255, 215, 0, 0.5);
  transform: translateY(-2px) scale(1.05);
}

.cyber-btn.gold:active {
  box-shadow: 0 1px 0 rgba(255, 215, 0, 0.35), 0 0 8px rgba(255, 215, 0, 0.3);
  transform: translateY(2px) scale(0.98);
}

.button-group {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 1.5rem;
}

.landing-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1rem;
  width: 100%;
  max-width: 800px;
}

.cards-link-section {
  margin-top: 2rem;
}

.deck-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  width: 100%;
  margin: 2.5rem 0;
}

.stat-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-top: 3px solid var(--neon-cyan);
  padding: 1.2rem;
  border-radius: 6px;
  text-align: center;
}

.stat-card .num {
  font-family: var(--font-code);
  font-size: 2rem;
  font-weight: 700;
  color: var(--neon-green);
}

.stat-card .label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  font-family: var(--font-code);
}

.spread-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: fadeIn 0.4s ease forwards;
}

.cards-flex {
  display: flex;
  gap: 2.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: 2rem 0;
  width: 100%;
}

.card-wrapper {
  perspective: 1200px;
  width: 280px;
  height: 490px;
  cursor: pointer;
  position: relative;
}

.card-wrapper .pos-label {
  position: absolute;
  top: -38px;
  left: 0;
  width: 100%;
  text-align: center;
  font-family: var(--font-code);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--neon-cyan);
  background: rgba(19, 23, 34, 0.8);
  border: 1px solid var(--neon-cyan);
  padding: 0.3rem 0;
  border-radius: 4px;
  letter-spacing: 1px;
  z-index: 5;
}

.card-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
  border-radius: 12px;
}

.card-wrapper:hover .card-inner {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 10px 30px rgba(0, 229, 255, 0.3);
}

.card-wrapper.flipped .card-inner {
  transform: rotateY(180deg) translateY(-4px);
}

.card-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid var(--neon-green);
  box-shadow: 0 0 15px rgba(0, 255, 102, 0.2);
}

.card-face img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.card-face.back {
  background: #090b10;
  border-color: var(--neon-cyan);
}

.card-face.front {
  transform: rotateY(180deg);
  background: #0a0a0c;
}

.card-face.front.is-reversed img {
  transform: rotate(180deg);
}

.details-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-left: 4px solid var(--neon-green);
  padding: 1.75rem;
  border-radius: 8px;
  max-width: 800px;
  width: 100%;
  margin-top: 1.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  animation: slideUp 0.4s ease forwards;
}

.details-panel.reversed-style {
  border-left-color: var(--neon-magenta);
}

.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-name-text {
  font-family: var(--font-code);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--neon-green);
}

.orientation-badge {
  font-family: var(--font-code);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.orientation-badge.upright {
  background: rgba(0, 255, 102, 0.15);
  border: 1px solid var(--neon-green);
  color: var(--neon-green);
}

.orientation-badge.reversed {
  background: rgba(255, 0, 127, 0.15);
  border: 1px solid var(--neon-magenta);
  color: var(--neon-magenta);
}

.meaning-block {
  margin-bottom: 1rem;
}

.meaning-label {
  font-family: var(--font-code);
  font-size: 0.85rem;
  color: var(--neon-cyan);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.meaning-text {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-main);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 7, 12, 0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--panel-bg);
  border: 2px solid var(--neon-cyan);
  border-radius: 12px;
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 2rem;
  position: relative;
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.3);
}

@media (max-width: 768px) {
  header {
    padding-top: 3.5rem;
  }
  .mode-toggle-bar {
    top: 0.75rem;
    right: 0.75rem;
  }
  .cyber-btn-sm {
    font-size: 0.7rem;
    padding: 0.3rem 0.6rem;
  }
  .cyber-btn {
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
  }
  .modal-content {
    grid-template-columns: 1fr;
  }
  .modal-close {
    width: 44px;
    height: 44px;
    font-size: 1.6rem;
    top: 0.5rem;
    right: 0.5rem;
  }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(11, 13, 18, 0.9);
  border: 2px solid var(--neon-magenta);
  color: var(--neon-magenta);
  font-family: var(--font-code);
  font-size: 1.4rem;
  width: 40px;
  height: 40px;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(255, 0, 127, 0.4);
  z-index: 10;
}

.modal-card-img {
  width: 100%;
  border-radius: 8px;
  border: 2px solid var(--neon-green);
}

.modal-card-img.reversed {
  transform: rotate(180deg);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.codex-section {
  width: 100%;
  margin-top: 2rem;
}

.codex-title {
  font-family: var(--font-code);
  font-size: 1.3rem;
  color: var(--neon-cyan);
  margin-bottom: 1rem;
  text-align: center;
}

.search-input {
  width: 100%;
  max-width: 500px;
  margin: 0 auto 1.5rem auto;
  display: block;
  background: var(--panel-bg);
  border: 1px solid var(--neon-cyan);
  color: var(--text-main);
  font-family: var(--font-code);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  outline: none;
}

.codex-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  padding: 0.5rem;
}

.codex-thumb {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 0.5rem;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
}

.codex-thumb:hover {
  border-color: var(--neon-green);
  transform: scale(1.05);
}

.codex-thumb img {
  width: 100%;
  border-radius: 4px;
}

.codex-thumb .name {
  font-family: var(--font-code);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-family: var(--font-code);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--neon-cyan);
  text-decoration: none;
  background: rgba(19, 23, 34, 0.92);
  border: 2px solid var(--neon-cyan);
  border-radius: 6px;
  padding: 0.6rem 1.2rem;
  cursor: pointer;
  position: relative;
  transition: all 0.15s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 0 rgba(0, 229, 255, 0.35), 0 0 12px rgba(0, 229, 255, 0.15);
}

.back-link:hover {
  background: var(--neon-cyan);
  color: var(--bg-dark);
  box-shadow: 0 6px 0 rgba(0, 229, 255, 0.45), 0 0 25px rgba(0, 229, 255, 0.5);
  transform: translateY(-2px) scale(1.05);
}

.back-link:active {
  box-shadow: 0 1px 0 rgba(0, 229, 255, 0.35), 0 0 8px rgba(0, 229, 255, 0.3);
  transform: translateY(2px) scale(0.98);
}