/* ==========================================================================
   Hand Frame FX — Minimal Monochrome Stylesheet
   ========================================================================== */

:root {
  --bg: #000000;
  --bg-glass: rgba(0, 0, 0, 0.55);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.2);
  --border-active: rgba(255, 255, 255, 0.5);

  --text: #e8e8e8;
  --text-muted: #777777;
  --text-dim: #555555;

  --white: #ffffff;
  --accent: #ffffff;
  --rec: #cc3333;

  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition: 0.2s ease;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  overflow: hidden;
  width: 100vw;
  height: 100vh;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
.loading-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-content { text-align: center; }

.loader-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-top: 24px;
  margin-bottom: 8px;
  color: var(--white);
}

.loader-content p {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.spinner {
  width: 50px;
  height: 50px;
  position: relative;
  margin: 0 auto;
}

.double-bounce1, .double-bounce2 {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--white);
  opacity: 0.4;
  position: absolute;
  top: 0;
  left: 0;
  animation: sk-bounce 2s infinite ease-in-out;
}
.double-bounce2 {
  opacity: 0.2;
  animation-delay: -1s;
}

@keyframes sk-bounce {
  0%, 100% { transform: scale(0); }
  50% { transform: scale(1); }
}

/* Hidden video source */
#webcam-video { display: none; }

/* Fullscreen canvas */
.fullscreen-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

#app-canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* Gesture hint */
.gesture-hint {
  position: absolute;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.85);
  border: 1px solid var(--border-hover);
  border-radius: 24px;
  padding: 6px 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 100;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.gesture-hint.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(-14px);
}

.hint-icon { font-size: 0.9rem; }
.hint-text {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.3px;
}

/* ============================
   Floating Header
   ============================ */
.floating-header {
  position: absolute;
  top: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
  pointer-events: none;
}
.floating-header > * { pointer-events: auto; }

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 10px;
}

.logo-emoji { font-size: 1.3rem; }

.logo-text h1 {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--white);
}

.version-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-dim);
}

/* Glass Widget */
.glass-widget {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 10px;
}

/* Action Buttons */
.action-buttons {
  height: 40px;
  padding: 4px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 2px;
}

.btn-action {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition), background var(--transition);
}
.btn-action svg { vertical-align: middle; }

.btn-action:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.btn-action.active {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.divider {
  width: 1px;
  height: 16px;
  background: var(--border);
  margin: 0 2px;
}

/* Record Button */
.btn-record {
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.btn-record:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}
.btn-record.recording {
  background: var(--rec);
  color: var(--white);
  border-color: transparent;
  animation: pulse-rec 1.5s infinite;
}
.btn-record.recording:hover { background: #dd4444; }

.record-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--rec);
}
.btn-record.recording .record-dot { background: var(--white); }

@keyframes pulse-rec {
  0% { box-shadow: 0 0 0 0 rgba(204, 51, 51, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(204, 51, 51, 0); }
  100% { box-shadow: 0 0 0 0 rgba(204, 51, 51, 0); }
}

/* ============================
   Bottom Filter Dock
   ============================ */
.floating-footer {
  position: absolute;
  bottom: 20px;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  z-index: 10;
  pointer-events: none;
}

.filter-dock-container {
  pointer-events: auto;
  width: 88%;
  max-width: 860px;
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 10px 16px;
  overflow: hidden;
}

.filter-dock {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}
.filter-dock::-webkit-scrollbar { display: none; }
.filter-dock {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Filter Circular Item */
.filter-item {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  background: transparent;
  border: none;
  outline: none;
  width: 72px;
  transition: var(--transition);
}

.filter-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  border: 1.5px solid rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  transition: all var(--transition);
}

.filter-name {
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--text-dim);
  text-align: center;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition);
}

/* Hover */
.filter-item:hover .filter-circle {
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--text);
  transform: translateY(-2px);
}

/* Active */
.filter-item.active .filter-circle {
  background: var(--white);
  border-color: var(--white);
  color: #000000;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.2);
  transform: scale(1.08);
}
.filter-item.active .filter-name {
  color: var(--white);
  font-weight: 600;
}

/* ============================
   Toast Notifications
   ============================ */
.toast-container {
  position: fixed;
  top: 76px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.78rem;
  pointer-events: auto;
  min-width: 200px;
  transform: translateX(120%);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.toast.show { transform: translateX(0); }
.toast-record { border-left: 3px solid var(--rec); }

/* ============================
   Responsive
   ============================ */
@media (max-width: 700px) {
  .floating-header {
    flex-direction: column;
    gap: 10px;
    align-items: center;
    top: 12px;
    left: 12px;
    right: 12px;
  }
  .toast-container { top: 140px; }
}

@media (max-width: 480px) {
  .btn-action span { display: none; }
  .btn-action { padding: 8px; }
  .filter-dock-container { padding: 8px; }
  .filter-circle {
    width: 38px;
    height: 38px;
    font-size: 0.7rem;
  }
  .filter-item { width: 60px; }
}