:root {
  --bg: #fdfbf7;
  --bg-dark: #f6f3ed;
  --ink-black: #2d1e18;
  --ink-muted: #5c4d44;
  --ink-light: #8b796d;
  --border-width: 2.5px;

  /* Pastels & Accent */
  --accent: #7c3aed;
  --accent-light: #e9e3ff;
  --danger: #fca5a5;
  --success: #a7f3d0;
  --warning: #fef3c7;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink-black);
  font-family: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.stage {
  position: relative;
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
}

#video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
  background: #000;
  will-change: transform;
}

#board,
#overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  will-change: transform;
  transform: translateZ(0);
  /* Force GPU compositing layer */
}

/* ---------- Top-Left Controls Container ---------- */
.top-left-controls {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  z-index: 6;
}

/* ---------- Top-Right Controls Container ---------- */
.top-right-controls {
  position: absolute;
  top: 20px;
  right: 40px;
  display: flex;
  flex-direction: row;
  gap: 30px;
  z-index: 5;
}

.zoom-btn-container {
  position: relative;
  width: 80px;
  height: 80px;
}

.zoom-btn {
  width: 80px;
  height: 80px;
  border-radius: 16px;
  background: var(--bg);
  border: var(--border-width) solid var(--ink-black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 4px 4px 0px var(--ink-black);
  transition: all 0.15s cubic-bezier(0.25, 0.8, 0.25, 1);
  padding: 0;
  position: relative;
  color: var(--ink-black);
}

.zoom-btn:hover {
  background: var(--bg-dark);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0px var(--ink-black);
}

.zoom-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0px var(--ink-black);
}

.progress-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.progress-ring__circle {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  transition: stroke-dashoffset 0.1s linear;
  stroke-linecap: round;
}

/* ---------- Collapsible Gesture Guide & Settings ---------- */
.legend,
.settings-panel {
  background: var(--bg);
  border: var(--border-width) solid var(--ink-black);
  border-radius: 16px;
  padding: 16px;
  font-size: 13px;
  line-height: 1.5;
  width: 250px;
  box-shadow: 5px 5px 0px var(--ink-black);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  color: var(--ink-black);
  z-index: 6;
}

.legend-header,
.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.legend-header {
  margin-bottom: 12px;
}

.settings-header {
  margin-bottom: 0;
}

.settings-panel:not(.collapsed) .settings-header {
  margin-bottom: 12px;
}

.legend.collapsed,
.settings-panel.collapsed {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.legend.collapsed .legend-header,
.settings-panel.collapsed .settings-header {
  margin-bottom: 0;
  width: 100%;
  height: 100%;
  justify-content: center;
}

.legend.collapsed .legend-title,
.legend.collapsed #legendList,
.settings-panel.collapsed .settings-title,
.settings-panel.collapsed #settingsContent {
  display: none;
}

.legend-toggle,
.settings-toggle {
  background: none;
  border: none;
  color: var(--ink-muted);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.legend-toggle:hover,
.settings-toggle:hover {
  background: var(--bg-dark);
  color: var(--ink-black);
}

.legend.collapsed .legend-toggle,
.settings-panel.collapsed .settings-toggle {
  padding: 0;
  width: 100%;
  height: 100%;
  font-size: 18px;
  color: var(--ink-black);
}

.legend.collapsed .legend-toggle:hover,
.settings-panel.collapsed .settings-toggle:hover {
  background: var(--bg-dark);
}

.legend-title,
.settings-title {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.legend ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-black);
  font-weight: 600;
}

.legend .ic {
  width: 24px;
  height: 24px;
  background: var(--bg-dark);
  border: 1.5px solid var(--ink-black);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  box-shadow: 1px 1px 0px var(--ink-black);
}

/* ---------- Settings Panel Details ---------- */
.setting-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.setting-label {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 13px;
  color: var(--ink-black);
}

.setting-val {
  font-family: monospace;
  font-size: 13px;
  background: var(--bg-dark);
  border: 1.5px solid var(--ink-black);
  padding: 1px 6px;
  border-radius: 4px;
}

.setting-slider {
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-dark);
  border: 1.5px solid var(--ink-black);
  height: 8px;
  border-radius: 4px;
  outline: none;
  width: 100%;
  margin: 8px 0;
}

.setting-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 1.5px solid var(--ink-black);
  cursor: pointer;
  box-shadow: 1px 1px 0px var(--ink-black);
  transition: transform 0.1s;
}

.setting-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.setting-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--ink-black);
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 1px 1px 0px var(--ink-black);
  transition: transform 0.1s;
}

.setting-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
}

.setting-hint {
  font-size: 11px;
  color: var(--ink-muted);
  line-height: 1.4;
}

/* ---------- Top-Center Controls (Status Badge + Undo/Redo) ---------- */
.top-center-controls {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 5;
}

.gesture-badge {
  position: static;
  transform: none;
  background: var(--bg);
  border: var(--border-width) solid var(--ink-black);
  border-radius: 999px;
  padding: 8px 18px;
  font-family: 'Fraunces', Georgia, serif;
  font-size: 14px;
  font-weight: 800;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: 4px 4px 0px var(--ink-black);
  color: var(--ink-black);
  white-space: nowrap;
}

.undo-redo-btn-container {
  position: relative;
  width: 48px;
  height: 48px;
}

.undo-redo-btn {
  width: 48px;
  height: 48px;
  border-radius: 9px;
  background: var(--bg);
  border: var(--border-width) solid var(--ink-black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 3px 3px 0px var(--ink-black);
  transition: all 0.15s cubic-bezier(0.25, 0.8, 0.25, 1);
  padding: 0;
  position: relative;
  color: var(--ink-black);
}

.undo-redo-btn:hover {
  background: var(--bg-dark);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0px var(--ink-black);
}

.undo-redo-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0px var(--ink-black);
}

.gesture-badge.draw {
  background: var(--accent-light);
}

.gesture-badge.erase {
  background: var(--warning);
}

.gesture-badge.clear {
  background: var(--danger);
}

.gesture-badge.pan {
  background: #f5d0fe;
  /* pastel magenta */
}

.gesture-badge.zoom {
  background: #cffafe;
  /* pastel cyan */
}

/* ---------- Floating Centered Toolbar Dock ---------- */
.toolbar {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 30px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  background: var(--bg);
  border: var(--border-width) solid var(--ink-black);
  border-radius: 24px;
  box-shadow: 6px 6px 0px var(--ink-black);
  z-index: 5;
  flex-wrap: nowrap;
  max-width: 95%;
  transition: all 0.3s ease;
}

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

.divider {
  width: var(--border-width);
  height: 28px;
  background: var(--ink-black);
}

.brush {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  user-select: none;
}

.brush input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-dark);
  border: 1.5px solid var(--ink-black);
  height: 8px;
  border-radius: 4px;
  outline: none;
  width: 90px;
  transition: background 0.3s;
}

.brush input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 1.5px solid var(--ink-black);
  cursor: pointer;
  box-shadow: 1px 1px 0px var(--ink-black);
  transition: transform 0.1s, background-color 0.2s;
}

.brush input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.25);
  background: #8b5cf6;
}

.brush input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--ink-black);
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 1px 1px 0px var(--ink-black);
  transition: transform 0.1s, background-color 0.2s;
}

.brush input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.25);
  background: #8b5cf6;
}

/* ---------- Buttons ---------- */
.btn {
  pointer-events: auto;
  border: var(--border-width) solid var(--ink-black);
  background: #fff;
  color: var(--ink-black);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.15s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: 3px 3px 0px var(--ink-black);
}

.btn:hover {
  background: var(--bg-dark);
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px var(--ink-black);
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0px var(--ink-black);
}

.btn.ghost {
  background: var(--bg-dark);
}

.btn.ghost:hover {
  background: #e8e3da;
}

.btn.small {
  padding: 6px 12px;
  font-size: 11.5px;
  border-radius: 8px;
}

.btn.big {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: 16px;
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 800;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: 1px 1px 0px var(--ink-black) !important;
  transform: translate(1px, 1px) !important;
}

.btn.danger {
  background: var(--danger);
}

.btn.danger:hover {
  background: #f87171;
}

.btn.success {
  background: var(--success);
}

.btn.success:hover {
  background: #34d399;
}

.btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 1px 1px 0px var(--ink-black) !important;
  transform: translate(1px, 1px) !important;
}

.btn.active:hover {
  background: #6d28d9;
}

/* ---------- Toast ---------- */
.toast {
  position: absolute;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg);
  border: var(--border-width) solid var(--ink-black);
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 700;
  z-index: 8;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 4px 4px 0px var(--ink-black);
  transition: all 0.3s ease;
  color: var(--ink-black);
}

.toast.error {
  background: var(--danger);
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2.5px solid rgba(45, 30, 24, 0.2);
  border-top-color: var(--ink-black);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

/* ---------- Premium Start Screen (Eggshell Outline Theme) ---------- */
.splash {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--bg);
  z-index: 10;
}

.splash-card {
  background: #fff;
  border: var(--border-width) solid var(--ink-black);
  text-align: center;
  max-width: 440px;
  padding: 40px;
  border-radius: 24px;
  box-shadow: 8px 8px 0px var(--ink-black);
}

.splash-card h1 {
  font-family: 'Fraunces', Georgia, serif;
  margin: 0 0 12px;
  font-size: 32px;
  font-weight: 900;
  color: var(--ink-black);
}

.splash-card p {
  color: var(--ink-muted);
  margin: 0 0 28px;
  line-height: 1.6;
  font-size: 15px;
  font-weight: 500;
}

.splash-card small {
  display: block;
  margin-top: 18px;
  color: var(--ink-light);
  font-size: 12px;
  font-weight: 700;
}

.hidden {
  display: none !important;
}

/* ---------- Recording Widget ---------- */
.recording-section {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-dark);
  border: 1.5px solid var(--ink-black);
  padding: 4px 10px 4px 12px;
  border-radius: 16px;
  pointer-events: auto;
  box-shadow: 2px 2px 0px var(--ink-black);
}

.rec-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
}

.rec-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-light);
  border: 1px solid var(--ink-black);
  transition: background-color 0.2s;
}

.rec-status.recording .rec-dot {
  background: #ef4444;
  animation: pulse 1.2s infinite alternate;
}

.rec-status.paused .rec-dot {
  background: var(--warning);
}

.rec-timer {
  font-family: monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-black);
  background: #fff;
  border: 1.5px solid var(--ink-black);
  padding: 3px 8px;
  border-radius: 6px;
}

.rec-buttons {
  display: flex;
  align-items: center;
  gap: 6px;
}

@keyframes pulse {
  from {
    transform: scale(0.9);
    opacity: 0.6;
  }

  to {
    transform: scale(1.25);
    opacity: 1;
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.6);
  }
}

/* ---------- Centered Loader Component ---------- */
.loader-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  text-align: center;
}

.loader-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-black);
  letter-spacing: 0.02em;
  margin-top: 10px;
}

.loader__balls {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 15px;
}

.loader__balls__group {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  position: relative;
  height: 100px;
  width: 40px;
}

.ball {
  height: 30px;
  width: 30px;
  border-radius: 15px;
  border: 2px solid var(--ink-black);
  box-shadow: 2px 2px 0px var(--ink-black);
  position: absolute;
  transform-origin: bottom;
}

/* ANIMATION BALL 1*/
.loader__balls__group :nth-child(1) {
  background-color: #99e2d0;
  animation-name: jumpinBallAnimation1;
  animation-duration: 1000ms;
  animation-iteration-count: infinite;
}

@keyframes jumpinBallAnimation1 {
  0% {
    transform: translateY(0) scale(1, 1);
  }

  10% {
    transform: translateY(0) scale(1.3, 0.8);
  }

  11% {
    transform: translateY(0) scale(0.7, 1.2);
    animation-timing-function: cubic-bezier(0, 0, 0.5, 1);
  }

  39% {
    transform: translateY(-75px) scale(1);
    animation-timing-function: cubic-bezier(0, 0, 0.5, 1);
  }

  40% {
    transform: translateY(-75px) scale(1);
  }

  41% {
    transform: translateY(-75px) scale(1);
    animation-timing-function: cubic-bezier(1, 0, 1, 0);
  }

  69% {
    transform: translateY(0px) scale(1, 1);
    animation-timing-function: cubic-bezier(1, 0, 1, 0);
  }

  70% {
    transform: translateY(0) scale(1.5, 0.4);
  }

  80% {
    transform: translateY(0) scale(0.8, 1.2);
  }

  90% {
    transform: translateY(0) scale(1.1, 0.8);
  }

  100% {
    transform: translateY(0) scale(1, 1);
  }
}

/* ANIMATION BALL 2*/
.loader__balls__group :nth-child(2) {
  background-color: #ff79da;
  animation-name: jumpinBallAnimation2;
  animation-duration: 1000ms;
  animation-iteration-count: infinite;
}

@keyframes jumpinBallAnimation2 {
  0% {
    transform: translateY(0) scale(1, 1);
  }

  10% {
    transform: translateY(0) scale(1.3, 0.8);
  }

  11% {
    transform: translateY(0) scale(0.7, 1.2);
    animation-timing-function: cubic-bezier(0, 0.5, 0.5, 1);
  }

  39% {
    transform: translateY(-75px) scale(1);
    animation-timing-function: cubic-bezier(0, 0.5, 0.5, 1);
  }

  40% {
    transform: translateY(-75px) scale(1);
  }

  41% {
    transform: translateY(-75px) scale(1);
    animation-timing-function: cubic-bezier(1, 0, 1, 0.5);
  }

  69% {
    transform: translateY(0px) scale(1, 1);
    animation-timing-function: cubic-bezier(1, 0, 1, 0.5);
  }

  70% {
    transform: translateY(0) scale(1.5, 0.4);
  }

  80% {
    transform: translateY(0) scale(0.8, 1.2);
  }

  90% {
    transform: translateY(0) scale(1.1, 0.8);
  }

  100% {
    transform: translateY(0) scale(1, 1);
  }
}

/* ANIMATION BALL 3*/
.loader__balls__group :nth-child(3) {
  background-color: #9356dc;
  animation-name: jumpinBallAnimation3;
  animation-duration: 1000ms;
  animation-iteration-count: infinite;
}

@keyframes jumpinBallAnimation3 {
  0% {
    transform: translateY(0) scale(1, 1);
  }

  10% {
    transform: translateY(0) scale(1.3, 0.8);
  }

  11% {
    transform: translateY(0) scale(0.7, 1.2);
    animation-timing-function: cubic-bezier(0, 1, 0.5, 1);
  }

  39% {
    transform: translateY(-75px) scale(1);
    animation-timing-function: cubic-bezier(0, 1, 0.5, 1);
  }

  40% {
    transform: translateY(-75px) scale(1);
  }

  41% {
    transform: translateY(-75px) scale(1);
    animation-timing-function: cubic-bezier(1, 0, 1, 1);
  }

  69% {
    transform: translateY(0px) scale(1, 1);
    animation-timing-function: cubic-bezier(1, 0, 1, 1);
  }

  70% {
    transform: translateY(0) scale(1.5, 0.4);
  }

  80% {
    transform: translateY(0) scale(0.8, 1.2);
  }

  90% {
    transform: translateY(0) scale(1.1, 0.8);
  }

  100% {
    transform: translateY(0) scale(1, 1);
  }
}

.loader__balls__group .item1 {
  animation-delay: 0ms;
}

.loader__balls__group .item2 {
  animation-delay: 100ms;
}

.loader__balls__group .item3 {
  animation-delay: 200ms;
}

/* ---------- Disable Text Selection on UI Controls ---------- */
.zoom-btn,
.undo-redo-btn,
.btn,
.gesture-badge,
.legend,
.settings-panel {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* ---------- Responsive Layout ---------- */
@media (max-width: 768px) {
  .top-left-controls {
    flex-direction: column;
    gap: 10px;
    top: 15px;
    left: 15px;
  }

  .legend,
  .settings-panel {
    width: 200px;
  }

  .top-right-controls {
    top: 15px;
    right: 15px;
    gap: 10px;
  }

  .zoom-btn-container,
  .zoom-btn,
  .undo-redo-btn-container,
  .undo-redo-btn {
    width: 40px;
    height: 40px;
  }

  .zoom-btn,
  .undo-redo-btn {
    font-size: 14px;
    box-shadow: 2px 2px 0px var(--ink-black);
  }

  .toolbar {
    flex-direction: column;
    padding: 16px;
    border-radius: 20px;
    gap: 12px;
    width: 90%;
    bottom: 60px;
  }

  .divider {
    width: 80%;
    height: var(--border-width);
  }

  .gesture-badge {
    top: 15px;
    font-size: 12px;
    padding: 6px 14px;
  }
}

@media (max-width: 440px) {
  .badge-text {
    display: none;
  }

  .top-center-controls {
    gap: 16px;
    top: 10px;
    left: 150px;
  }

  .top-right-controls {
    gap: 16px;
    top: 10px;
    right: 20px;
  }

  .top-left-controls {
    gap: 8px;
    top: 10px;
    left: 10px;
  }

  .undo-redo-btn-container,
  .undo-redo-btn,
  .zoom-btn-container,
  .zoom-btn {
    width: 38px;
    height: 38px;
  }

  .zoom-btn,
  .undo-redo-btn {
    font-size: 13px;
    box-shadow: 2px 2px 0px var(--ink-black);
  }

  .gesture-badge {
    padding: 6px 10px;
  }
}