/* ==========================================================================
   All England 3D Badminton Court Simulator - Studio Design System
   Sleek CAD / Broadcast Architectural Interface, Mobile Bottom Sheet, Lucide Icons
   ========================================================================== */

:root {
  --bg-deep: #070B12;
  --bg-panel: rgba(15, 23, 42, 0.88);
  --bg-elevated: rgba(30, 41, 59, 0.7);
  --bg-hover: rgba(51, 65, 85, 0.8);
  
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(250, 204, 21, 0.5);

  --accent-gold: #FACC15;
  --accent-cyan: #38BDF8;
  --accent-emerald: #10B981;
  --accent-crimson: #EF4444;
  --court-allengland: #0D5C3A;

  --text-pure: #FFFFFF;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --drawer-width: 440px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-deep);
  font-family: var(--font-body);
  color: var(--text-pure);
  -webkit-font-smoothing: antialiased;
}

#app-viewport {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

#webgl-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  display: block;
  touch-action: none;
}

.hidden {
  display: none !important;
}

/* Lucide Icon Standard Size */
.lucide-icon, svg.lucide {
  width: 16px;
  height: 16px;
  stroke-width: 2;
  display: inline-block;
  vertical-align: middle;
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */
.app-toast {
  position: absolute;
  top: 76px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--accent-gold);
  color: #FFF;
  padding: 10px 20px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  animation: toast-fade 0.3s ease-out;
  pointer-events: none;
}

.toast-icon {
  color: var(--accent-gold);
  width: 18px;
  height: 18px;
}

@keyframes toast-fade {
  from { opacity: 0; transform: translate(-50%, -10px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* ==========================================================================
   APP HEADER
   ========================================================================== */
.app-header {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  pointer-events: none;
}

.header-brand {
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  padding: 8px 16px;
  border-radius: 10px;
  pointer-events: auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--accent-gold);
}

.badge-icon {
  width: 11px;
  height: 11px;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.brand-title .highlight {
  color: var(--accent-gold);
  margin-left: 4px;
}

/* Camera Presets Navigation Bar */
.camera-preset-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  padding: 4px;
  border-radius: 10px;
  pointer-events: auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.cam-preset-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease-out;
  white-space: nowrap;
}

.cam-preset-btn:hover {
  color: var(--text-pure);
  background: var(--bg-elevated);
}

.cam-preset-btn.active {
  background: var(--bg-elevated);
  color: var(--accent-gold);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Header Utilities */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: auto;
}

.action-icon-btn {
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  color: var(--text-pure);
  height: 38px;
  padding: 0 12px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease-out;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.action-icon-btn:hover {
  background: var(--bg-elevated);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.action-icon-btn.active {
  background: rgba(250, 204, 21, 0.15);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.snapshot-8k-btn {
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.2), rgba(56, 189, 248, 0.2));
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.snapshot-8k-btn:hover {
  background: var(--accent-gold);
  color: #000;
}

.drawer-toggle-btn {
  background: var(--accent-gold);
  color: #000;
  border-color: var(--accent-gold);
}

.drawer-toggle-btn:hover {
  background: #EAB308;
  color: #000;
}

/* ==========================================================================
   TOUCH VIEW CONTROLS (Mobile / Tablet Overlay)
   ========================================================================== */
.floating-view-controls {
  position: absolute;
  bottom: 24px;
  left: 20px;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: auto;
}

.touch-ctrl-btn {
  width: 40px;
  height: 40px;
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  color: var(--text-pure);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  transition: all 0.15s ease-out;
}

.touch-ctrl-btn:hover {
  background: var(--bg-elevated);
  transform: scale(1.05);
}

.touch-ctrl-btn.active {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

/* ==========================================================================
   ZONE INSPECTOR CARD
   ========================================================================== */
.zone-card {
  position: absolute;
  top: 80px;
  left: 20px;
  z-index: 25;
  width: 320px;
  background: var(--bg-panel);
  backdrop-filter: blur(20px);
  border: 1px solid var(--accent-cyan);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
  animation: zone-pop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes zone-pop {
  from { transform: translateY(10px) scale(0.96); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.zone-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-glass);
}

.zone-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.zone-icon {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.zone-title-wrap h3 {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  color: var(--text-pure);
  letter-spacing: 0.5px;
}

.zone-close-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 2px;
}

.zone-close-btn:hover {
  color: var(--text-pure);
}

.zone-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.zone-detail-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.zone-detail-row span {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.zone-detail-row b {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--accent-cyan);
}

.zone-detail-row p {
  font-size: 12px;
  line-height: 1.4;
  color: var(--text-muted);
}

/* ==========================================================================
   HAWK-EYE CHALLENGE OVERLAY BANNER
   ========================================================================== */
.hawkeye-overlay {
  position: absolute;
  top: 36%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 30;
  background: rgba(9, 13, 22, 0.96);
  border: 2px solid var(--accent-gold);
  border-radius: 12px;
  padding: 20px 36px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(250, 204, 21, 0.2);
  animation: hawkeye-enter 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes hawkeye-enter {
  from { transform: translate(-50%, -40%) scale(0.9); opacity: 0; }
  to { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

.hawkeye-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.hawkeye-result-box {
  margin-bottom: 16px;
}

.verdict-status {
  font-family: var(--font-display);
  font-size: 54px;
  font-weight: 900;
  letter-spacing: 4px;
  line-height: 1;
}

.verdict-status.in {
  color: var(--accent-emerald);
  text-shadow: 0 0 25px rgba(16, 185, 129, 0.5);
}

.verdict-status.out {
  color: var(--accent-crimson);
  text-shadow: 0 0 25px rgba(239, 68, 68, 0.5);
}

.verdict-distance {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-pure);
  margin-top: 6px;
}

.hawkeye-close-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  color: var(--text-pure);
  padding: 8px 18px;
  border-radius: 6px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
}

.hawkeye-close-btn:hover {
  background: var(--accent-gold);
  color: #000;
}

/* ==========================================================================
   SIMULATOR STUDIO DRAWER
   ========================================================================== */
.studio-drawer {
  position: absolute;
  top: 76px;
  right: 14px;
  bottom: 14px;
  width: var(--drawer-width);
  background: var(--bg-panel);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-glass);
  border-radius: 14px;
  z-index: 25;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
}

.studio-drawer.collapsed {
  transform: translateX(calc(100% + 20px));
  opacity: 0;
  pointer-events: none;
}

.drawer-drag-handle {
  display: none;
  width: 100%;
  padding: 10px 0 4px;
  justify-content: center;
  cursor: grab;
}

.handle-bar {
  width: 44px;
  height: 4px;
  background: var(--border-glass);
  border-radius: 2px;
}

.drawer-tabs {
  display: flex;
  padding: 8px 12px;
  gap: 4px;
  border-bottom: 1px solid var(--border-glass);
  background: rgba(0, 0, 0, 0.2);
  border-radius: 14px 14px 0 0;
}

.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 8px 4px;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: all 0.15s ease-out;
}

.tab-btn:hover {
  color: var(--text-pure);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  background: var(--bg-elevated);
  color: var(--accent-gold);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 18px 20px;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.section-title-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-glass);
}

.section-title-wrap h4 {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text-pure);
}

.unit-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.unit-label {
  font-size: 10px;
  color: var(--text-dim);
  font-weight: 700;
}

.unit-switch {
  display: flex;
  background: rgba(0, 0, 0, 0.4);
  padding: 2px;
  border-radius: 6px;
  border: 1px solid var(--border-glass);
}

.unit-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 3px 8px;
  font-size: 10px;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
}

.unit-btn.active {
  background: var(--bg-elevated);
  color: var(--accent-gold);
}

.spec-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  padding: 10px 14px;
  transition: border-color 0.15s;
}

.spec-item:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.spec-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.spec-name {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
}

.spec-val {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  color: var(--accent-gold);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-glass);
  transition: 0.2s;
  border-radius: 20px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 2px;
  bottom: 2px;
  background-color: var(--text-muted);
  transition: 0.2s;
  border-radius: 50%;
}

input:checked + .toggle-slider {
  background-color: var(--accent-gold);
}

input:checked + .toggle-slider:before {
  transform: translateX(16px);
  background-color: #000;
}

.custom-group {
  margin-bottom: 20px;
}

.custom-label {
  display: block;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.custom-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 10px;
}

.color-swatch-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 8px;
}

.color-swatch-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  padding: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.15s;
  text-align: left;
}

.color-swatch-btn:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.color-swatch-btn.active {
  border-color: var(--accent-gold);
  background: rgba(250, 204, 21, 0.1);
}

.swatch-color {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}

.swatch-name {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-pure);
}

.line-color-row {
  display: flex;
  gap: 8px;
}

.line-color-btn {
  flex: 1;
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  color: var(--text-pure);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.15s;
}

.line-color-btn.active {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.line-color-btn .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.lighting-presets {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.preset-pill {
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  padding: 10px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
}

.preset-pill:hover {
  color: var(--text-pure);
  background: var(--bg-hover);
}

.preset-pill.active {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  background: rgba(250, 204, 21, 0.1);
}

.visibility-toggles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-pure);
  cursor: pointer;
}

.check-item input {
  accent-color: var(--accent-gold);
  cursor: pointer;
}

.shot-selector-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.shot-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  padding: 10px 14px;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease-out;
}

.shot-card:hover {
  background: var(--bg-hover);
}

.shot-card.active {
  border-color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
}

.shot-title {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-pure);
}

.shot-meta {
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 2px;
}

.primary-launch-btn {
  width: 100%;
  background: var(--accent-cyan);
  color: #000;
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.15s, transform 0.15s;
}

.primary-launch-btn:hover {
  background: #0284C7;
  color: #FFF;
  transform: translateY(-1px);
}

.hawkeye-trigger-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hawkeye-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  color: var(--text-pure);
  padding: 10px 14px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s;
}

.hawkeye-btn.btn-in:hover {
  border-color: var(--accent-emerald);
  color: var(--accent-emerald);
}

.hawkeye-btn.btn-out:hover {
  border-color: var(--accent-crimson);
  color: var(--accent-crimson);
}

.rule-accordion {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rule-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  padding: 12px 14px;
}

.rule-card-title {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 6px;
}

.rule-card-text {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.5;
}

.snapshot-flash {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #FFF;
  opacity: 0.8;
  pointer-events: none;
  z-index: 100;
  transition: opacity 0.4s ease-out;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS (Mobile Bottom Sheet & Ergonomics)
   ========================================================================== */
@media (max-width: 992px) {
  .camera-preset-bar {
    display: none;
  }
}

@media (max-width: 768px) {
  .app-header {
    top: 8px;
    left: 8px;
    right: 8px;
  }

  .brand-title {
    font-size: 12px;
  }

  .header-actions .btn-label {
    display: none;
  }

  .studio-drawer {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-height: 62vh;
    border-radius: 20px 20px 0 0;
    border-bottom: none;
  }

  .studio-drawer.collapsed {
    transform: translateY(calc(100% - 44px));
    opacity: 1;
    pointer-events: auto;
  }

  .drawer-drag-handle {
    display: flex;
  }

  .floating-view-controls {
    bottom: 60px;
    left: 12px;
  }

  .zone-card {
    top: 64px;
    left: 8px;
    right: 8px;
    width: auto;
  }
}