@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Exo+2:wght@300;400;600&display=swap');

:root {
  --bg-deep: #0a0a1a;
  --bg-mid: #0f0f2e;
  --bg-surface: #161640;
  --neon-cyan: #00f5ff;
  --neon-magenta: #ff00e4;
  --neon-yellow: #ffe600;
  --neon-green: #39ff14;
  --neon-orange: #ff6a00;
  --neon-purple: #b300ff;
  --text-primary: #e0e0ff;
  --text-dim: #5a5a8a;
  --slot-bg: rgba(255, 255, 255, 0.06);
  --slot-border: rgba(255, 255, 255, 0.12);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Exo 2', sans-serif;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  transition: opacity 0.5s ease;
}
.screen.hidden { display: none; }

.stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* ---- SETUP SCREEN ---- */
.setup-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  max-width: 480px;
  margin: 0 auto;
  width: 100%;
  overflow-y: auto;
  max-height: 100vh;
}

.title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 4px;
}

.subtitle {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 36px;
}

.glow-text {
  text-shadow:
    0 0 7px var(--neon-cyan),
    0 0 20px var(--neon-cyan),
    0 0 42px rgba(0, 245, 255, 0.3);
  color: var(--neon-cyan);
}

.selector-group {
  width: 100%;
  margin-bottom: 20px;
}

.selector-label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.translation-buttons {
  display: flex;
  gap: 8px;
}

.trans-btn {
  flex: 1;
  padding: 10px 0;
  border: 1px solid var(--slot-border);
  border-radius: 8px;
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.trans-btn:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.2);
}

.trans-btn.active {
  background: rgba(0, 245, 255, 0.12);
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 0 16px rgba(0, 245, 255, 0.25), inset 0 0 12px rgba(0, 245, 255, 0.08);
}

.selector-row {
  display: flex;
  gap: 12px;
  width: 100%;
}
.flex-1 { flex: 1; }

.dropdown-wrapper {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--slot-border);
  border-radius: 8px;
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.25s ease;
}
.search-input:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.15);
}
.search-input:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.dropdown-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 220px;
  overflow-y: auto;
  background: var(--bg-mid);
  border: 1px solid var(--slot-border);
  border-radius: 8px;
  z-index: 100;
  scrollbar-width: thin;
  scrollbar-color: var(--neon-cyan) transparent;
}
.dropdown-list.hidden { display: none; }

.dropdown-item {
  padding: 10px 16px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.15s;
}
.dropdown-item:hover, .dropdown-item.highlighted {
  background: rgba(0, 245, 255, 0.1);
  color: var(--neon-cyan);
}

.verse-nav-row {
  display: flex;
  align-items: stretch;
  width: 100%;
  gap: 8px;
  margin-bottom: 24px;
}

.verse-nav-row .verse-preview {
  flex: 1;
  min-width: 0;
  width: auto;
  margin-bottom: 0;
}

.nav-arrow-btn {
  width: 40px;
  min-height: 60px;
  flex-shrink: 0;
  border: 1px solid var(--slot-border);
  border-radius: 12px;
  background: var(--bg-surface);
  color: var(--text-dim);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.nav-arrow-btn:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.2);
}

.verse-preview {
  width: 100%;
  min-height: 60px;
  max-height: 400px;
  overflow-y: auto;
  padding: 16px;
  border: 1px dashed var(--slot-border);
  border-radius: 12px;
  background: var(--bg-surface);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-dim);
  text-align: center;
  font-style: italic;
  transition: all 0.3s ease;
}
.verse-preview.loaded {
  color: var(--text-primary);
  border-color: rgba(0, 245, 255, 0.2);
  font-style: normal;
}

.start-btn {
  padding: 14px 48px;
  border: 1px solid var(--neon-magenta);
  border-radius: 12px;
  background: rgba(255, 0, 228, 0.1);
  color: var(--neon-magenta);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
}
.start-btn:hover:not(:disabled) {
  background: rgba(255, 0, 228, 0.2);
  box-shadow: 0 0 24px rgba(255, 0, 228, 0.3);
  transform: translateY(-2px);
}
.start-btn:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.glow-btn {
  text-shadow: 0 0 8px var(--neon-magenta), 0 0 20px rgba(255, 0, 228, 0.3);
}

.spread-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.spread-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--slot-border);
  outline: none;
}
.spread-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
  cursor: pointer;
}
.spread-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
  cursor: pointer;
  border: none;
}

.spread-value {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--neon-cyan);
  min-width: 30px;
  text-align: right;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  cursor: pointer;
}

.toggle-switch input { display: none; }

.toggle-slider {
  position: absolute;
  inset: 0;
  background: rgba(90, 90, 138, 0.3);
  border-radius: 24px;
  transition: background 0.3s;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  background: #888;
  border-radius: 50%;
  transition: transform 0.3s, background 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
  background: rgba(0, 245, 255, 0.3);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: var(--neon-cyan);
}

/* ---- GAME SCREEN ---- */
.game-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  max-height: 33vh;
  overflow-y: auto;
  padding: 16px 20px;
  padding-right: 56px;
  background: linear-gradient(180deg, rgba(10, 10, 26, 0.95) 0%, rgba(10, 10, 26, 0.7) 80%, transparent 100%);
  transition: max-height 0.4s ease;
}

.game-header.expanded {
  max-height: 100vh;
  overflow: visible;
}

.verse-ref {
  font-family: var(--font-display);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--neon-cyan);
  margin-bottom: 8px;
  text-shadow: 0 0 6px var(--neon-cyan);
}

.verse-slots {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  min-height: 40px;
}

.word-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 10px;
  border: 1px dashed var(--slot-border);
  border-radius: 6px;
  background: var(--slot-bg);
  font-family: var(--font-body);
  font-size: clamp(1.2rem, 4.5vw, 2.8rem);
  font-weight: 400;
  color: rgba(220, 220, 240, 0.85);
  transition: all 0.4s ease;
  white-space: nowrap;
  overflow: hidden;
  user-select: none;
}

.hints-hidden .word-slot {
  color: transparent;
  text-shadow: none;
}

.word-slot.filled,
.hints-hidden .word-slot.filled {
  border-style: solid;
  border-width: 2px;
  color: var(--text-primary);
  font-size: clamp(1.3rem, 4.8vw, 3rem);
  font-weight: 700;
  background: rgba(0, 245, 255, 0.08);
  border-color: rgba(0, 245, 255, 0.3);
  text-shadow: 0 0 4px var(--neon-cyan);
  animation: slotReveal 0.5s ease-out;
}

@keyframes slotReveal {
  0% { transform: scale(1.15); filter: brightness(2); }
  100% { transform: scale(1); filter: brightness(1); }
}

.word-slot.next-target {
  border-color: var(--neon-yellow);
  box-shadow: 0 0 10px rgba(255, 230, 0, 0.2);
}

.auto-btn {
  position: absolute;
  top: 16px;
  right: 60px;
  height: 36px;
  padding: 0 14px;
  border: 1px solid var(--slot-border);
  border-radius: 18px;
  background: var(--bg-surface);
  color: var(--neon-green);
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  z-index: 30;
}
.auto-btn:hover {
  border-color: var(--neon-green);
  color: var(--neon-green);
  box-shadow: 0 0 14px rgba(57, 255, 20, 0.3);
}

.back-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--slot-border);
  border-radius: 50%;
  background: var(--bg-surface);
  color: var(--text-dim);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  z-index: 30;
}
.back-btn:hover {
  border-color: var(--neon-magenta);
  color: var(--neon-magenta);
}

#game-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  cursor: grab;
  touch-action: none;
}

#particle-canvas {
  position: fixed;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  width: 100%;
  height: 100%;
}

/* ---- CELEBRATION ---- */
.celebration-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 40px;
  background: linear-gradient(to bottom, transparent 0%, rgba(10, 10, 26, 0.95) 40%);
  pointer-events: none;
}
.celebration-overlay.hidden { display: none; }

.celebration-overlay > * {
  pointer-events: auto;
}

.celebration-text {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 12px;
  animation: celebPulse 1.5s ease-in-out infinite;
}

.celebration-verse {
  display: none;
}

@keyframes celebPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.85; transform: scale(1.04); }
}

/* ---- WORD TILE (in canvas overlay via DOM) ---- */
.word-tile {
  position: absolute;
  z-index: 10;
  padding: 8px 16px;
  border-radius: 8px;
  background: rgba(15, 15, 46, 0.9);
  border: 1px solid rgba(0, 245, 255, 0.35);
  color: var(--neon-cyan);
  font-family: var(--font-body);
  font-size: clamp(1rem, 3.5vw, 1.6rem);
  font-weight: 600;
  cursor: grab;
  text-shadow: 0 0 6px var(--neon-cyan);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.15);
  transition: transform 0.1s, box-shadow 0.2s;
  white-space: nowrap;
  touch-action: none;
}

.word-tile:hover {
  box-shadow: 0 0 24px rgba(0, 245, 255, 0.35);
}

.word-tile.selected {
  border-color: var(--neon-yellow);
  color: var(--neon-yellow);
  text-shadow: 0 0 8px var(--neon-yellow);
  box-shadow: 0 0 28px rgba(255, 230, 0, 0.4);
  animation: wobble 0.6s ease-in-out infinite;
  z-index: 15;
}

.word-tile.dragging {
  border-color: var(--neon-yellow);
  color: var(--neon-yellow);
  text-shadow: 0 0 10px var(--neon-yellow);
  box-shadow: 0 0 32px rgba(255, 230, 0, 0.5);
  z-index: 20;
  cursor: grabbing;
  transition: none;
}

.word-slot.drop-hover {
  border-style: solid;
  border-color: var(--neon-yellow);
  box-shadow: 0 0 16px rgba(255, 230, 0, 0.4);
  background: rgba(255, 230, 0, 0.08);
  color: var(--neon-yellow);
  text-shadow: 0 0 6px var(--neon-yellow);
}

.word-tile.correct {
  animation: popIn 0.4s ease-out;
}

@keyframes wobble {
  0%, 100% { transform: rotate(-2deg) scale(1.05); }
  25% { transform: rotate(2deg) scale(1.08); }
  50% { transform: rotate(-1.5deg) scale(1.05); }
  75% { transform: rotate(1.5deg) scale(1.07); }
}

@keyframes popIn {
  0% { transform: scale(1.3); opacity: 0.5; }
  60% { transform: scale(0.95); }
  100% { transform: scale(1); opacity: 1; }
}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0, 245, 255, 0.3); border-radius: 4px; }