/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --glass-bg: rgba(10, 10, 12, 0.82);
  --glass-surface: rgba(22, 22, 28, 0.72);
  --glass-hover: rgba(36, 36, 46, 0.80);
  --glass-border: rgba(255, 255, 255, 0.07);
  --glass-border-bright: rgba(255, 255, 255, 0.14);
  --accent: #00d4ff;
  --accent-dim: rgba(0, 212, 255, 0.18);
  --accent-glow: rgba(0, 212, 255, 0.35);
  --danger: #ff4757;
  --danger-dim: rgba(255, 71, 87, 0.18);
  --text-primary: rgba(255,255,255,0.92);
  --text-secondary: rgba(255,255,255,0.48);
  --text-muted: rgba(255,255,255,0.28);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-ui: 'Syne', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --backdrop: blur(20px) saturate(180%);
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-ui);
  background: #07070a;
  color: var(--text-primary);
  line-height: 1.5;
}

/* ===== NOISE TEXTURE OVERLAY ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* ===== APP LAYOUT ===== */
.app {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ===== HEADER ===== */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 52px;
  background: rgba(8, 8, 10, 0.90);
  border-bottom: 0.5px solid var(--glass-border-bright);
  backdrop-filter: var(--backdrop);
  flex-shrink: 0;
  z-index: 10;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

.brand-name {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--text-primary);
}

.header-status {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.status-dot.idle { background: var(--text-muted); }
.status-dot.active { background: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }
.status-dot.recording { background: var(--danger); box-shadow: 0 0 8px rgba(255,71,87,0.5); animation: blink 1s infinite; }

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

/* ===== MAIN LAYOUT ===== */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  flex: 1;
  overflow: hidden;
  gap: 0;
}

/* ===== PREVIEW PANEL ===== */
.preview-panel {
  display: flex;
  flex-direction: column;
  padding: 20px;
  gap: 14px;
  overflow: hidden;
  background: #09090c;
}

.preview-wrapper {
  position: relative;
  flex: 1;
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 0.5px solid var(--glass-border-bright);
  min-height: 0;
}

#sharedScreen {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ===== PREVIEW OVERLAY (empty state) ===== */
.preview-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.75);
  gap: 12px;
  transition: opacity 0.4s;
}
.preview-overlay.hidden { opacity: 0; pointer-events: none; }

.overlay-icon {
  font-size: 40px;
  opacity: 0.2;
  filter: grayscale(1);
}

.overlay-hint {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* ===== INTERACTION CANVAS ===== */
#interactCanvas {
  position: absolute;
  top: 0;
  left: 0;
  cursor: crosshair;
  z-index: 5;
  /* サイズは JS の syncCanvasSize() で動的にセット */
}

/* ===== HUD ===== */
.preview-hud {
  position: absolute;
  top: 10px;
  left: 10px;
  display: flex;
  gap: 6px;
  z-index: 6;
}

.hud-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(0,0,0,0.65);
  border: 0.5px solid var(--glass-border-bright);
  color: var(--accent);
  letter-spacing: 0.05em;
}

.record-badge { color: var(--danger); }

/* ===== INTERACT OVERLAY ===== */
.interact-overlay {
  position: absolute;
  bottom: 10px;
  right: 10px;
  z-index: 6;
}

.interact-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(0,212,255,0.12);
  border: 0.5px solid var(--accent);
  color: var(--accent);
}

/* ===== PREVIEW CONTROLS ===== */
.preview-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border: 0.5px solid var(--glass-border-bright);
  border-radius: var(--radius-sm);
  background: var(--glass-surface);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.1s, opacity 0.2s;
  backdrop-filter: var(--backdrop);
  white-space: nowrap;
}
.btn:hover:not(:disabled) {
  background: var(--glass-hover);
  border-color: var(--glass-border-bright);
}
.btn:active:not(:disabled) { transform: scale(0.97); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }

.btn-primary {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-primary:hover:not(:disabled) {
  background: rgba(0,212,255,0.25);
  box-shadow: 0 0 16px var(--accent-glow);
}

.btn-danger {
  background: var(--danger-dim);
  border-color: var(--danger);
  color: var(--danger);
}
.btn-danger:hover:not(:disabled) {
  background: rgba(255,71,87,0.28);
  box-shadow: 0 0 16px rgba(255,71,87,0.3);
}

.btn-ghost {
  background: transparent;
}

/* ===== SIDE PANEL ===== */
.side-panel {
  display: flex;
  flex-direction: column;
  border-left: 0.5px solid var(--glass-border-bright);
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop);
  overflow: hidden;
}

/* ===== TAB BAR ===== */
.tab-bar {
  display: flex;
  border-bottom: 0.5px solid var(--glass-border-bright);
  flex-shrink: 0;
}

.tab {
  flex: 1;
  padding: 13px 8px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.tab:hover { color: var(--text-primary); }
.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ===== TAB CONTENT ===== */
.tab-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 20px 18px;
}
.tab-content.active { display: block; }

.tab-content::-webkit-scrollbar { width: 3px; }
.tab-content::-webkit-scrollbar-track { background: transparent; }
.tab-content::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 2px; }

/* ===== SECTION LABELS ===== */
.section-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 0.5px solid var(--glass-border);
}

/* ===== SETTING ROWS ===== */
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.setting-row label:first-child {
  font-size: 12px;
  color: var(--text-secondary);
  flex: 1;
  display: flex;
  align-items: center;
  gap: 7px;
}

/* ===== SELECT ===== */
select {
  background: rgba(255,255,255,0.04);
  border: 0.5px solid var(--glass-border-bright);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 10px;
  cursor: pointer;
  outline: none;
  flex-shrink: 0;
  max-width: 160px;
  transition: border-color 0.2s;
}
select:hover { border-color: rgba(255,255,255,0.22); }
select option { background: #141418; }

/* ===== SLIDER ===== */
.slider-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  justify-content: flex-end;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100px;
  height: 3px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  flex-shrink: 0;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  cursor: pointer;
}

.slider-val {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  min-width: 52px;
  text-align: right;
}

/* ===== TOGGLE SWITCH ===== */
.toggle {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  cursor: pointer;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-track {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  border: 0.5px solid var(--glass-border-bright);
  border-radius: 20px;
  transition: background 0.2s, border-color 0.2s;
}
.toggle-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}
.toggle input:checked + .toggle-track {
  background: var(--accent-dim);
  border-color: var(--accent);
}
.toggle input:checked + .toggle-track::after {
  transform: translateX(16px);
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
}

/* ===== BADGE ===== */
.badge-info {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--accent-dim);
  border: 0.5px solid var(--accent);
  color: var(--accent);
  letter-spacing: 0.06em;
}

/* ===== VU METER ===== */
.vu-meter {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 4px;
}
.vu-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #00d4ff, #00ffb3);
  border-radius: 3px;
  transition: width 0.05s;
}

/* ===== REC CONTROLS ===== */
.rec-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.rec-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
  animation: blink 1s infinite;
  flex-shrink: 0;
}

.rec-timer {
  text-align: center;
  padding: 10px;
  background: rgba(255,71,87,0.07);
  border: 0.5px solid rgba(255,71,87,0.25);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--danger);
  letter-spacing: 0.12em;
}

.btn-warning {
  background: rgba(255, 200, 0, 0.12);
  border-color: rgba(255, 200, 0, 0.7);
  color: rgba(255, 200, 0, 0.95);
}
.btn-warning:hover:not(:disabled) {
  background: rgba(255, 200, 0, 0.22);
  box-shadow: 0 0 14px rgba(255, 200, 0, 0.25);
}

/* ===== DOWNLOAD LINK ===== */
#downloadLinkContainer a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(0,212,255,0.06);
  border: 0.5px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--accent);
  text-decoration: none;
  font-size: 12px;
  font-family: var(--font-mono);
  transition: background 0.2s;
}
#downloadLinkContainer a:hover {
  background: rgba(0,212,255,0.14);
}

/* ===== FULLSCREEN (previewWrapper が全画面コンテナ) ===== */
#previewWrapper:fullscreen,
#previewWrapper:-webkit-full-screen {
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
}

#previewWrapper:fullscreen #sharedScreen,
#previewWrapper:-webkit-full-screen #sharedScreen {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* canvas・HUD・interactOverlay は全画面内でも表示 */
#previewWrapper:fullscreen #interactCanvas,
#previewWrapper:-webkit-full-screen #interactCanvas {
  position: absolute;
  z-index: 5;
}

#previewWrapper:fullscreen .preview-hud,
#previewWrapper:-webkit-full-screen .preview-hud {
  z-index: 10;
}

#previewWrapper:fullscreen .interact-overlay,
#previewWrapper:-webkit-full-screen .interact-overlay {
  z-index: 10;
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  .main-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
    overflow-y: auto;
  }
  .preview-panel { min-height: 50vw; }
  .side-panel { border-left: none; border-top: 0.5px solid var(--glass-border-bright); }
  html, body { height: auto; overflow: auto; }
}