@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Syne:wght@400;700;800&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #0a0a0f;
  --bg2:      #111118;
  --bg3:      #1a1a24;
  --border:   rgba(255,255,255,0.08);
  --border-hi:rgba(255,255,255,0.18);
  --accent:   #00e5ff;
  --accent2:  #7c4dff;
  --text:     #e8e8f0;
  --text-dim: #8888a0;
  --danger:   #ff3b3b;
  --success:  #00e676;
  --radius:   10px;
  --font-mono:'JetBrains Mono', monospace;
  --font-disp:'Syne', sans-serif;
}

html, body { height: 100%; background: var(--bg); color: var(--text); font-family: var(--font-mono); overflow: hidden; }

/* ── Header ── */
.header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; height: 56px;
  background: var(--bg2); border-bottom: 1px solid var(--border);
  position: relative; z-index: 10;
}
.header-left { display: flex; align-items: baseline; gap: 10px; }
.logo {
  font-family: var(--font-disp); font-size: 20px; font-weight: 800;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.version { font-size: 11px; color: var(--text-dim); border: 1px solid var(--border); padding: 2px 7px; border-radius: 100px; }
.header-right { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-dim); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-dim); transition: background 0.3s; }
.status-dot.ready { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.error { background: var(--danger); }

/* ── Layout ── */
.main { display: grid; grid-template-columns: 1fr 260px; height: calc(100vh - 56px); overflow: hidden; }

/* ── Canvas area ── */
.canvas-wrapper {
  position: relative; background: #000;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.canvas-wrapper video,
.canvas-wrapper canvas {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;
}

/* KEY: Mirror the video feed so it looks like a mirror to the user.
   Drawing canvases are NOT mirrored — coords are corrected in JS instead. */
#video        { z-index: 1; opacity: 0.82; transform: scaleX(-1); }
#drawCanvas   { z-index: 2; }
#overlayCanvas{ z-index: 3; pointer-events: none; }

/* ── Gesture hints ── */
.gesture-hints {
  position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%);
  z-index: 4; display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(8px);
  border: 1px solid var(--border-hi); border-radius: var(--radius); padding: 8px 14px;
  transition: opacity 0.3s; max-width: 90%;
}
.gesture-hints.hidden { opacity: 0; pointer-events: none; }
.hint-item { display: flex; align-items: center; gap: 5px; font-size: 11px; color: rgba(255,255,255,0.75); white-space: nowrap; }
.hint-item:not(:last-child) { padding-right: 10px; border-right: 1px solid var(--border); }

/* ── Sidebar ── */
.controls {
  background: var(--bg2); border-left: 1px solid var(--border);
  overflow-y: auto; padding: 16px;
  display: flex; flex-direction: column; gap: 20px;
  scrollbar-width: thin; scrollbar-color: var(--bg3) transparent;
}
.control-section { display: flex; flex-direction: column; gap: 10px; }
.section-title {
  font-size: 10px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-dim); padding-bottom: 6px; border-bottom: 1px solid var(--border);
}

/* ── Colors ── */
.color-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.color-btn {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  background: var(--bg3); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 4px; cursor: pointer; transition: border-color 0.2s, transform 0.1s;
}
.color-btn:hover { border-color: var(--border-hi); transform: scale(1.04); }
.color-btn.active { border-color: var(--c); box-shadow: 0 0 8px color-mix(in srgb, var(--c) 50%, transparent); }
.color-swatch { width: 26px; height: 26px; border-radius: 50%; background: var(--c); display: block; }
.color-label { font-size: 9px; color: var(--text-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }

/* ── Slider ── */
.slider-row { display: flex; align-items: center; gap: 10px; }
.slider { flex: 1; -webkit-appearance: none; height: 3px; border-radius: 2px; background: var(--bg3); outline: none; cursor: pointer; }
.slider::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); cursor: pointer; box-shadow: 0 0 6px var(--accent); }
.slider-value { font-size: 12px; color: var(--accent); min-width: 32px; text-align: right; }
.brush-preview-wrap { display: flex; justify-content: center; background: var(--bg3); border: 1px solid var(--border); border-radius: 8px; padding: 8px; }

/* ── Tool buttons ── */
.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tool-btn {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 8px; background: var(--bg3); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text-dim); font-family: var(--font-mono);
  font-size: 12px; cursor: pointer; transition: all 0.2s;
}
.tool-btn:hover { border-color: var(--border-hi); color: var(--text); }
.tool-btn.active { background: rgba(0,229,255,0.08); border-color: var(--accent); color: var(--accent); }
.tool-icon { font-size: 14px; }

/* ── Action buttons ── */
.action-btn {
  width: 100%; padding: 10px 14px; background: var(--bg3);
  border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-family: var(--font-mono); font-size: 12px;
  cursor: pointer; text-align: left; transition: all 0.15s;
}
.action-btn:hover { border-color: var(--border-hi); background: var(--bg); }
.action-btn.danger:hover { border-color: var(--danger); color: var(--danger); }

/* ── Keyboard shortcuts list ── */
.kbd-list { display: flex; flex-direction: column; gap: 6px; }
.kbd-row { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--text-dim); }
.kbd-row span { margin-left: auto; }
kbd {
  display: inline-block; padding: 2px 6px;
  background: var(--bg3); border: 1px solid var(--border-hi);
  border-radius: 4px; font-family: var(--font-mono);
  font-size: 10px; color: var(--text);
}

/* ── Stats ── */
.stats-section { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border); gap: 8px; }
.stat { display: flex; justify-content: space-between; align-items: center; font-size: 12px; }
.stat-label { color: var(--text-dim); }
.stat-val   { color: var(--accent); font-weight: 600; }

/* ── Flash ── */
.flash {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
  background: rgba(0,230,118,0.15); border: 1px solid var(--success);
  color: var(--success); padding: 10px 22px; border-radius: 8px;
  font-size: 13px; z-index: 99; opacity: 0; transition: opacity 0.3s; pointer-events: none;
}
.flash.show { opacity: 1; }

/* ── Scrollbar ── */
.controls::-webkit-scrollbar { width: 4px; }
.controls::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 2px; }