/* e:\Antigravity\workspace\Cineaho\billiards-3d\styles.css */

/* --- Custom Variables & Theme --- */
:root {
  --bg-darker: #060913;
  --bg-panel: rgba(15, 23, 42, 0.55);
  --bg-panel-solid: #0d1527;
  --border-glass: rgba(255, 255, 255, 0.07);
  --border-focus: rgba(16, 185, 129, 0.5); /* green focus */
  
  --primary: #10b981; /* Emerald green */
  --primary-glow: rgba(16, 185, 129, 0.25);
  --primary-hover: #34d399;
  
  --secondary: #3b82f6; /* Blue */
  --secondary-glow: rgba(59, 130, 246, 0.2);
  --secondary-hover: #60a5fa;
  
  --danger: #ef4444; /* Red */
  --danger-glow: rgba(239, 68, 68, 0.2);
  --danger-hover: #f87171;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-inverse: #020617;
  
  --font-display: 'Outfit', 'Inter', 'Noto Sans KR', sans-serif;
  --font-body: 'Inter', 'Noto Sans KR', sans-serif;
  
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
}

/* --- Global Reset & Backgrounds --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-darker);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
  padding: 20px;
  position: relative;
  overflow-x: hidden;
}

/* Ambient glow blobs */
.bg-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(150px);
  opacity: 0.15;
  z-index: -1;
  pointer-events: none;
}
.bg-glow-green {
  background-color: var(--primary);
  top: 10%;
  left: -10%;
}
.bg-glow-blue {
  background-color: var(--secondary);
  bottom: 20%;
  right: -10%;
}

/* --- Glassmorphism Panel Helper --- */
.glass-panel {
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}
.glass-panel:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

/* --- Main Header Styling --- */
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 28px;
  margin-bottom: 24px;
  width: 100%;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}
.back-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateX(-3px);
  color: var(--primary);
  border-color: var(--primary-glow);
}

.app-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  font-size: 20px;
  color: var(--primary);
  filter: drop-shadow(0 0 8px var(--primary));
}
.logo-text {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.logo-text span {
  color: var(--primary);
  text-shadow: 0 0 10px var(--primary-glow);
}

.app-version {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(16, 185, 129, 0.1);
  padding: 2px 8px;
  border-radius: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Mode status capsule */
.mode-capsule {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--primary);
  box-shadow: 0 0 8px var(--primary);
  animation: pulse 1.8s infinite alternate;
}
@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  100% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 12px var(--primary); }
}

/* --- Layout Grid --- */
.game-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 60px;
}

/* --- Scoreboard Section --- */
.scoreboard-section {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  gap: 20px;
}

.player-card {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid transparent;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.player-card.active {
  background: rgba(16, 185, 129, 0.04);
  border-color: rgba(16, 185, 129, 0.2);
  box-shadow: 0 0 20px -5px rgba(16, 185, 129, 0.15);
}
.player-card.active#player2-card {
  background: rgba(59, 130, 246, 0.04);
  border-color: rgba(59, 130, 246, 0.2);
  box-shadow: 0 0 20px -5px rgba(59, 130, 246, 0.15);
}

.player-info {
  display: flex;
  align-items: center;
  gap: 16px;
}
.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-muted);
  border: 1px solid var(--border-glass);
}
.player-card.active .avatar {
  color: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}
.player-card.active#player2-card .avatar {
  color: var(--secondary);
  border-color: var(--secondary);
  box-shadow: 0 0 10px var(--secondary-glow);
}

.meta {
  display: flex;
  flex-direction: column;
}
.meta.align-right {
  text-align: right;
}
.player-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
}
.player-status {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}
.player-card.active .player-status {
  color: var(--primary);
}
.player-card.active#player2-card .player-status {
  color: var(--secondary);
}

.player-score {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}

/* Tray for pocketed balls */
.pocketed-tray {
  display: flex;
  gap: 4px;
  margin-top: 8px;
  min-height: 18px;
  flex-wrap: wrap;
  max-width: 180px;
}
.pocket-ball-icon {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  box-shadow: inset 0 2px 4px rgba(255,255,255,0.4), 0 1px 2px rgba(0,0,0,0.5);
  border: 1px solid rgba(0, 0, 0, 0.4);
}

.game-status-center {
  flex: 0.8;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}
.round-indicator {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
  text-shadow: 0 0 8px var(--primary-glow);
}

.game-options-compact {
  display: flex;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  padding: 4px;
  border-radius: 30px;
}
.mode-select-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.mode-select-btn:hover {
  color: var(--text-main);
}
.mode-select-btn.active {
  background: var(--primary);
  color: var(--text-inverse);
  box-shadow: 0 4px 12px var(--primary-glow);
}
.mode-select-btn.active#btn-mode-8ball {
  background: var(--primary);
}
.mode-select-btn.active#btn-mode-3cushion {
  background: var(--secondary);
  color: white;
  box-shadow: 0 4px 12px var(--secondary-glow);
}

/* --- 3D Viewport Section --- */
.viewport-section {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 580px;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

#three-canvas-container {
  width: 100%;
  height: 100%;
  position: relative;
}
#three-canvas-container canvas {
  display: block;
}

#loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #060913;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  transition: opacity 0.5s ease;
}
.loader {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-glass);
  border-bottom-color: var(--primary);
  border-radius: 50%;
  animation: rotation 1s linear infinite;
}
@keyframes rotation {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Cushion Bounce Counter HUD Overlay */
.cushion-bounce-counter {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-glass);
  border-left: 4px solid var(--secondary);
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  display: flex;
  flex-direction: column;
  z-index: 5;
  pointer-events: none;
  animation: slide-in 0.3s ease;
}
@keyframes slide-in {
  from { transform: translateX(-20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
.cushion-count-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}
.cushion-count-val {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 900;
  color: var(--secondary-hover);
  line-height: 1.1;
}

.viewport-overlay-controls {
  position: absolute;
  bottom: 20px;
  right: 20px;
  display: flex;
  gap: 8px;
  z-index: 5;
}
.overlay-btn {
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 30px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.overlay-btn:hover {
  background: var(--text-main);
  color: var(--bg-darker);
  border-color: white;
}
.overlay-btn.active {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

/* --- Controls Section --- */
.controls-section {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Big shoot / actions row */
.action-buttons-group {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 16px;
}

.control-action-btn {
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: var(--transition);
  text-transform: uppercase;
}
.control-action-btn.primary {
  background: var(--primary);
  color: var(--text-inverse);
  box-shadow: 0 4px 20px var(--primary-glow);
}
.control-action-btn.primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
}
.control-action-btn.secondary {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
}
.control-action-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-muted);
}
.control-action-btn.danger {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.15);
  color: var(--danger-hover);
}
.control-action-btn.danger:hover {
  background: var(--danger);
  color: var(--text-main);
  box-shadow: 0 4px 15px var(--danger-glow);
}

/* Slider Controls Grid */
.fine-tuning-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 24px;
}

.control-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.control-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.control-label-row .label {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.control-label-row .value {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--primary);
}

.slider-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  height: 48px;
}

/* Sleek Sliders */
.slider-wrapper input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  background: transparent;
  cursor: pointer;
}
.slider-wrapper input[type="range"]:focus {
  outline: none;
}

/* Chrome/Safari track & thumb */
.slider-wrapper input[type="range"]::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}
.slider-wrapper input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
  margin-top: -6px;
  transition: transform 0.15s ease;
}
.slider-wrapper input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Mozilla track & thumb */
.slider-wrapper input[type="range"]::-moz-range-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}
.slider-wrapper input[type="range"]::-moz-range-thumb {
  height: 18px;
  width: 18px;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
  transition: transform 0.15s ease;
}
.slider-wrapper input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.2);
}

/* Adjust Step Buttons */
.adjust-step-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.adjust-step-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

.control-desc {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* --- Spin / English Control Pad Styling --- */
.spin-control-item {
  grid-column: span 1;
}
.spin-selector-container {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  padding: 16px;
  border-radius: var(--radius-md);
}

.spin-pad-back {
  position: relative;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: #111827;
  border: 2px solid rgba(255, 255, 255, 0.15);
  box-shadow: inset 0 4px 10px rgba(0,0,0,0.6);
  cursor: crosshair;
  overflow: hidden;
  flex-shrink: 0;
}
.spin-circle-boundary {
  position: absolute;
  top: 5px;
  left: 5px;
  right: 5px;
  bottom: 5px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.08);
  pointer-events: none;
}
.spin-grid-line {
  position: absolute;
  background: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}
.spin-grid-line.hor {
  width: 100%;
  height: 1px;
  top: 50%;
}
.spin-grid-line.ver {
  height: 100%;
  width: 1px;
  left: 50%;
}
.spin-cursor {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--danger);
  border: 2px solid white;
  box-shadow: 0 0 8px var(--danger);
  transform: translate(-50%, -50%);
  top: 50%;
  left: 50%;
  pointer-events: none;
}

.spin-hints {
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
  flex: 1;
}
.hint-lbl {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}
.btn-spin-reset {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
  cursor: pointer;
  margin-top: 6px;
  align-self: flex-start;
  transition: var(--transition);
}
.btn-spin-reset:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-main);
}

/* --- Comprehensive Guide Section --- */
.guide-section {
  padding: 36px;
}

.guide-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.guide-header i {
  font-size: 24px;
  color: var(--primary);
}
.guide-header h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
}

.guide-toc {
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 36px;
}
.guide-toc h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.guide-toc ol {
  padding-left: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.guide-toc li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: var(--transition);
}
.guide-toc li a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.guide-content-wrapper {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.guide-article {
  border-top: 1px solid var(--border-glass);
  padding-top: 24px;
}
.guide-article h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-hover);
  margin-bottom: 12px;
}
.guide-article p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-align: justify;
}
.guide-article ul {
  padding-left: 20px;
  margin-bottom: 16px;
  font-size: 13.5px;
  color: var(--text-muted);
}
.guide-article li {
  margin-bottom: 6px;
}

.mode-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 16px;
}
.mode-card-info {
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 18px;
}
.mode-card-info h4 {
  font-size: 14.5px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}
.mode-card-info p {
  margin-bottom: 0;
  font-size: 13px;
  line-height: 1.5;
}

.controls-list-box {
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px;
}
.controls-list-box ul {
  margin-bottom: 0;
}

.formula-box {
  background: #090d16;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 16px;
  font-family: monospace;
}
.formula-box code {
  display: block;
  color: var(--secondary-hover);
  word-break: break-all;
  padding: 8px 0;
  font-size: 13px;
}

.spin-strategies {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.strategy-row {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.01);
  border-left: 3px solid var(--primary);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.strategy-row strong {
  font-size: 13.5px;
  margin-bottom: 4px;
  color: var(--text-main);
}
.strategy-row span {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.4;
}

.faq-item {
  margin-bottom: 16px;
}
.faq-item strong {
  display: block;
  font-size: 14px;
  color: var(--text-main);
  margin-bottom: 4px;
}
.faq-item p {
  margin-bottom: 0;
}

/* --- Responsive Adjustments --- */
@media (max-width: 1024px) {
  .fine-tuning-grid {
    grid-template-columns: 1fr 1fr;
  }
  .spin-control-item {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .main-header {
    flex-direction: column;
    gap: 12px;
    padding: 14px;
  }
  .scoreboard-section {
    flex-direction: column;
  }
  .player-card {
    width: 100%;
  }
  .viewport-section {
    aspect-ratio: 4 / 3;
  }
  .action-buttons-group {
    grid-template-columns: 1fr;
  }
  .fine-tuning-grid {
    grid-template-columns: 1fr;
  }
  .spin-control-item {
    grid-column: span 1;
  }
  .guide-toc ol {
    grid-template-columns: 1fr;
  }
  .mode-info-grid {
    grid-template-columns: 1fr;
  }
}