/* ==========================================================================
   AirPaint Design System & CSS Stylesheet
   ========================================================================== */

:root {
  --font-title: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Color Palette */
  --bg-dark: #070913;
  --bg-card: rgba(13, 17, 39, 0.6);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 242, 254, 0.6);
  
  --color-primary: #00f2fe;
  --color-secondary: #f35588;
  --color-accent: #fffc46;
  --color-text: #e2e8f0;
  --color-muted: #94a3b8;
  
  /* Status Colors */
  --color-online: #10ac84;
  --color-warning: #ff9f43;
  --color-danger: #ee5253;
}

/* Base Reset & Layout */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--color-text);
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  position: relative;
  user-select: none;
}

/* App Container */
#app-container {
  position: relative;
  width: 100%;
  height: 100%;
  z-index: 2;
}

/* --------------------------------------------------------------------------
   Webcam Modes Styling
   -------------------------------------------------------------------------- */
#webcam {
  position: fixed;
  z-index: 1;
  transform: scaleX(-1); /* Mirror camera feed */
  transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
  pointer-events: none;
}

/* Background Mode: Full-screen semi-transparent */
body.camera-bg-mode {
  background-color: #030408;
}
body.camera-bg-mode #webcam {
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  opacity: 0.65;
  filter: brightness(0.9);
}

/* PiP Mode: Small floating window */
body.camera-pip-mode {
  background: radial-gradient(circle at center, #131835 0%, #060814 100%);
}
body.camera-pip-mode #webcam {
  bottom: 24px;
  right: 24px;
  width: 320px;
  height: 240px;
  border-radius: 16px;
  object-fit: cover;
  opacity: 0.95;
  border: 2px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 242, 254, 0.15);
  pointer-events: auto;
}

/* Hidden Mode: No webcam displayed */
body.camera-hidden-mode {
  background: radial-gradient(circle at center, #101530 0%, #04060f 100%);
}
body.camera-hidden-mode #webcam {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  width: 10px;
  height: 10px;
  bottom: 0;
  right: 0;
}

/* --------------------------------------------------------------------------
   Canvas Layers
   -------------------------------------------------------------------------- */
#paint-canvas,
#skeleton-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: block;
}

#paint-canvas {
  z-index: 2;
  pointer-events: none;
}

#skeleton-canvas {
  z-index: 3;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Glassmorphism Styles
   -------------------------------------------------------------------------- */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.35);
}

/* --------------------------------------------------------------------------
   Floating Header
   -------------------------------------------------------------------------- */
.app-header {
  position: fixed;
  top: 20px;
  left: 20px;
  right: 20px;
  height: 64px;
  border-radius: 16px;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  pointer-events: auto;
}

.logo {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 28px;
  letter-spacing: -0.5px;
  color: #fff;
}

.logo-accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.status-indicators {
  display: flex;
  gap: 12px;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.03);
}

.status-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-pill.loading .dot {
  background-color: var(--color-warning);
  box-shadow: 0 0 10px var(--color-warning);
  animation: pulse-dot 1.5s infinite ease-in-out;
}

.status-pill.online .dot {
  background-color: var(--color-online);
  box-shadow: 0 0 10px var(--color-online);
}

.status-pill.offline .dot {
  background-color: var(--color-danger);
  box-shadow: 0 0 10px var(--color-danger);
}

/* --------------------------------------------------------------------------
   Buttons (Air UI & Standard)
   -------------------------------------------------------------------------- */
.air-btn {
  font-family: var(--font-body);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--color-text);
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  outline: none;
}

.air-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
}

.air-btn:active {
  transform: translateY(0);
}

.air-btn.active {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--color-primary);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.25);
  color: #fff;
}

/* --------------------------------------------------------------------------
   Control Panel
   -------------------------------------------------------------------------- */
.control-panel {
  position: fixed;
  left: 20px;
  top: 104px;
  bottom: 20px;
  width: 320px;
  border-radius: 20px;
  z-index: 10;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  overflow-y: auto;
  pointer-events: auto;
  transition: transform 0.4s cubic-bezier(0.19, 1, 0.22, 1), opacity 0.4s ease;
  transform: translateX(0);
  opacity: 1;
}

.control-panel.collapsed {
  transform: translateX(-120%);
  opacity: 0;
  pointer-events: none;
}

.panel-toggle-btn {
  position: fixed;
  left: 20px;
  bottom: 24px;
  z-index: 9;
  padding: 12px 20px;
  font-weight: bold;
  border-radius: 12px;
  transition: opacity 0.3s ease;
}

.panel-toggle-btn.hidden {
  opacity: 0;
  pointer-events: none;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: -10px;
}

.panel-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  color: #fff;
}

.icon-btn {
  padding: 8px !important;
  font-size: 12px !important;
  border-radius: 8px !important;
}

/* Custom Scrollbar for Control Panel */
.control-panel::-webkit-scrollbar {
  width: 6px;
}
.control-panel::-webkit-scrollbar-track {
  background: transparent;
}
.control-panel::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 99px;
}
.control-panel::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

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

.section-label {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-muted);
}

.section-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-group {
  display: flex;
  gap: 8px;
}

.btn-group.flex-row {
  flex-wrap: wrap;
}

.btn-group.flex-row .air-btn {
  flex: 1 1 calc(50% - 4px); /* Two buttons per row by default */
  min-width: 80px;
}

/* Grid of Preset Colors */
.grid-colors {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.color-preset {
  height: 48px;
  width: 100%;
  border-radius: 50%;
  border: 2px solid transparent;
  background-color: var(--color-theme);
  position: relative;
  transition: all 0.25s ease;
  box-shadow: inset 0 4px 6px rgba(0,0,0,0.25);
  padding: 0;
}

.color-preset::before {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  right: -6px;
  bottom: -6px;
  border-radius: 50%;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}

.color-preset:hover {
  transform: scale(1.1);
}

.color-preset.active {
  border-color: #fff;
  transform: scale(1.05);
}

.color-preset.active::before {
  border-color: var(--color-theme);
  box-shadow: 0 0 15px var(--color-theme);
}

/* Rainbow Color Preset */
.rainbow-preset {
  background: linear-gradient(45deg, #f35588, #ff9f43, #fffc46, #10ac84, #00f2fe, #9b5de5) !important;
  font-size: 18px;
}

.rainbow-preset.active::before {
  background: transparent;
  border-color: #fff;
  box-shadow: 0 0 15px rgba(255,255,255,0.4);
}

/* Brush Size & Camera View Presets */
.size-preset, .cam-view-btn {
  font-size: 13px !important;
  padding: 8px 10px !important;
}

/* Action Grid (Undo, Redo, Clear, Save) */
.grid-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.action-btn {
  font-size: 13px !important;
  padding: 12px 8px !important;
}

.air-btn.danger:hover {
  background: rgba(238, 82, 83, 0.15);
  border-color: var(--color-danger);
  box-shadow: 0 0 15px rgba(238, 82, 83, 0.2);
}

.air-btn.danger.active {
  background: rgba(238, 82, 83, 0.2);
  border-color: var(--color-danger);
  box-shadow: 0 0 20px rgba(238, 82, 83, 0.4);
}

.air-btn.success:hover {
  background: rgba(16, 172, 132, 0.15);
  border-color: var(--color-online);
  box-shadow: 0 0 15px rgba(16, 172, 132, 0.2);
}

.air-btn.success.active {
  background: rgba(16, 172, 132, 0.2);
  border-color: var(--color-online);
  box-shadow: 0 0 20px rgba(16, 172, 132, 0.4);
}

/* --------------------------------------------------------------------------
   Hands State Pills
   -------------------------------------------------------------------------- */
.hands-state-container {
  position: fixed;
  top: 96px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 10;
  pointer-events: none;
}

.hand-state-pill {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.19, 1, 0.22, 1);
  transform: translateX(20px);
  animation: slide-in-pill 0.4s forwards cubic-bezier(0.19, 1, 0.22, 1);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.hand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.hand-dot.left {
  background-color: var(--color-secondary);
  box-shadow: 0 0 8px var(--color-secondary);
}
.hand-dot.right {
  background-color: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
}

.hand-name {
  color: #fff;
}

.hand-brush-preview {
  margin-left:auto;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.4);
}

/* --------------------------------------------------------------------------
   Tutorial Overlay Card
   -------------------------------------------------------------------------- */
#tutorial-overlay, #game-tutorial-overlay {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 440px;
  padding: 32px;
  border-radius: 24px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 242, 254, 0.1);
  pointer-events: auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

#tutorial-overlay.hidden, #game-tutorial-overlay.hidden {
  opacity: 0;
  transform: translate(-50%, -45%);
  pointer-events: none;
}

#tutorial-overlay h3, #game-tutorial-overlay h3 {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.2px;
  background: linear-gradient(135deg, #fff, var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

#tutorial-overlay ul, #game-tutorial-overlay ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

#tutorial-overlay li, #game-tutorial-overlay li {
  font-size: 14px;
  line-height: 1.6;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: #cbd5e1;
}

.gesture-icon {
  font-size: 20px;
  line-height: 1;
}

#tutorial-overlay button, #game-tutorial-overlay button {
  margin-top: 8px;
  width: 100%;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  border-color: rgba(255, 255, 255, 0.15);
}

#tutorial-overlay button:hover, #game-tutorial-overlay button:hover {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(243, 85, 136, 0.15));
  border-color: var(--color-primary);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

/* --------------------------------------------------------------------------
   Toast / Notification UI
   -------------------------------------------------------------------------- */
#toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
  pointer-events: none;
}

.toast {
  background: rgba(13, 17, 39, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 12px 24px;
  border-radius: 12px;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slide-up-toast 0.3s forwards cubic-bezier(0.19, 1, 0.22, 1);
  transition: opacity 0.3s ease;
}

.toast.info { border-left: 3px solid var(--color-primary); }
.toast.success { border-left: 3px solid var(--color-online); }
.toast.warning { border-left: 3px solid var(--color-warning); }
.toast.error { border-left: 3px solid var(--color-danger); }

/* --------------------------------------------------------------------------
   Keyframe Animations
   -------------------------------------------------------------------------- */
@keyframes pulse-dot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.3);
    opacity: 0.6;
  }
}

@keyframes slide-in-pill {
  to {
    transform: translateX(0);
  }
}

@keyframes slide-up-toast {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .control-panel {
    width: calc(100% - 40px);
    height: auto;
    bottom: 20px;
    top: auto;
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: 16px;
    gap: 16px;
    border-radius: 16px;
  }

  .control-section {
    flex: 0 0 240px;
  }

  body.camera-pip-mode #webcam {
    width: 160px;
    height: 120px;
    bottom: 160px;
    right: 20px;
  }

  .hands-state-container {
    top: auto;
    bottom: 160px;
    right: 20px;
  }

  #tutorial-overlay, #game-tutorial-overlay {
    width: 90%;
    max-width: 380px;
    padding: 20px;
  }
}

/* ==========================================================================
   Kinetic Rigging Game UI & Styling Extensions
   ========================================================================== */

/* Mode Selector styles */
.mode-selector-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.mode-selector {
  display: flex;
  background: rgba(13, 17, 39, 0.5) !important;
  border-radius: 30px;
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.mode-btn {
  background: transparent;
  border: none;
  color: var(--color-muted);
  padding: 6px 18px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  outline: none;
}

.mode-btn:hover {
  color: #fff;
}

.mode-btn.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.35);
  transform: scale(1.02);
}

/* Game Status Floating Panel */
#game-status-panel {
  position: fixed;
  top: 104px;
  right: 20px;
  width: 240px;
  border-radius: 16px;
  z-index: 10;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: auto;
  animation: slide-in-pill 0.4s forwards cubic-bezier(0.19, 1, 0.22, 1);
}

#game-status-panel h4 {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.game-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.game-stat {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.02);
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.game-stat .label {
  font-size: 10px;
  color: var(--color-muted);
  text-transform: uppercase;
  font-weight: 500;
}

.game-stat .value {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 10px rgba(255,255,255,0.1);
}

.game-actions {
  margin-top: 4px;
}

.mini-btn {
  width: 100%;
  padding: 8px !important;
  font-size: 12px !important;
  font-weight: 600;
  border-radius: 8px !important;
}

/* Touch feedback for Air UI */
.active-air-click {
  animation: air-click-flash 0.4s ease-out;
}

@keyframes air-click-flash {
  0% {
    transform: scale(1.05);
    background: rgba(0, 242, 254, 0.4);
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.6);
  }
  100% {
    transform: scale(1);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: none;
  }
}