:root {
  --bg: #0b0710;
  --panel: #16101f;
  --panel-border: #2a1f3d;
  --grad1: #ff5ecb;
  --grad2: #7c5cff;
  --grad3: #3ee6d4;
  --text: #f0e9ff;
  --text-dim: #a89bc4;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  inset: -20% -20% auto -20%;
  height: 60vh;
  background: radial-gradient(circle at 30% 20%, rgba(255,94,203,0.35), transparent 60%),
              radial-gradient(circle at 70% 10%, rgba(124,92,255,0.35), transparent 60%),
              radial-gradient(circle at 50% 40%, rgba(62,230,212,0.25), transparent 60%);
  filter: blur(40px);
  z-index: 0;
  pointer-events: none;
}

.hero {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 56px 20px 24px;
}

.hero h1 {
  font-size: clamp(2rem, 6vw, 3.2rem);
  margin: 0;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  font-weight: 700;
  margin: 6px 0 10px;
}

.grad-text {
  background: linear-gradient(90deg, var(--grad1), var(--grad2), var(--grad3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sub {
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.5;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.35);
}

.panel h2 {
  margin-top: 0;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--grad1), var(--grad2));
  font-size: 1rem;
  font-weight: 800;
  flex-shrink: 0;
}

.dropzone {
  position: relative;
  border: 2px dashed var(--panel-border);
  border-radius: 16px;
  padding: 30px 16px;
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
}

.dropzone.dragover {
  border-color: var(--grad2);
  background: rgba(124,92,255,0.08);
}

.dz-icon { font-size: 2.4rem; margin-bottom: 6px; }

.hint { color: var(--text-dim); font-size: 0.85rem; margin: 4px 0 0; }

.link-btn {
  background: none;
  border: none;
  color: var(--grad3);
  text-decoration: underline;
  cursor: pointer;
  font-size: 1em;
  padding: 0;
}

.mask-preview {
  max-width: 160px;
  max-height: 160px;
  margin: 14px auto 0;
  display: block;
  border-radius: 10px;
  border: 1px solid var(--panel-border);
  background:
    linear-gradient(45deg, #222 25%, transparent 25%) -8px 0/16px 16px,
    linear-gradient(-45deg, #222 25%, transparent 25%) -8px 0/16px 16px,
    linear-gradient(45deg, transparent 75%, #222 75%) -8px 0/16px 16px,
    linear-gradient(-45deg, transparent 75%, #222 75%) -8px 0/16px 16px,
    #333;
}

.sample-gallery {
  margin-top: 18px;
  text-align: center;
}

.sample-label {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0 0 10px;
}

.sample-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.sample-thumb {
  width: 56px;
  height: 56px;
  padding: 4px;
  border-radius: 12px;
  border: 2px solid var(--panel-border);
  background:
    linear-gradient(45deg, #221a30 25%, transparent 25%) -6px 0/12px 12px,
    linear-gradient(-45deg, #221a30 25%, transparent 25%) -6px 0/12px 12px,
    linear-gradient(45deg, transparent 75%, #221a30 75%) -6px 0/12px 12px,
    linear-gradient(-45deg, transparent 75%, #221a30 75%) -6px 0/12px 12px,
    #2a2038;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.sample-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
}

.sample-thumb:hover {
  border-color: var(--grad2);
  transform: translateY(-2px);
}

.sample-thumb.selected {
  border-color: var(--grad3);
  box-shadow: 0 0 0 3px rgba(62,230,212,0.25);
}

.mode-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.mode-tab {
  flex: 1 1 auto;
  border: 1px solid var(--panel-border);
  background: rgba(255,255,255,0.03);
  color: var(--text-dim);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s, color 0.15s, background 0.15s;
  white-space: nowrap;
}

.mode-tab:hover {
  border-color: var(--grad2);
  color: var(--text);
}

.mode-tab.selected {
  background: linear-gradient(135deg, rgba(255,94,203,0.18), rgba(124,92,255,0.18));
  border-color: var(--grad2);
  color: var(--text);
  box-shadow: 0 0 0 2px rgba(124,92,255,0.2);
}

.mode-panel[hidden] { display: none; }

.facecut-status {
  color: var(--text-dim);
  font-size: 0.85rem;
  text-align: center;
  margin: 14px 0 0;
  min-height: 1.2em;
}

.facecut-status.error { color: #ff8a8a; }
.facecut-status.ok { color: #8affc1; }
.facecut-status.busy { color: var(--grad3); }

.camera-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 12px 20px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn:not(:disabled):hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, var(--grad1), var(--grad2));
  color: white;
}

.btn-accent {
  background: linear-gradient(135deg, var(--grad3), var(--grad2));
  color: #0b0710;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: var(--text);
}

.stage {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #000;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--panel-border);
}

#video, #overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#video { transform: scaleX(-1); }
#overlay { transform: scaleX(-1); }

.status-msg {
  position: absolute;
  inset: auto 0 0 0;
  padding: 12px 16px;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  color: var(--text-dim);
  font-size: 0.9rem;
  text-align: center;
  z-index: 2;
  transition: opacity 0.3s;
}

.status-msg.hidden { display: none; }
.status-msg.error { color: #ff8a8a; background: rgba(60,0,0,0.6); }
.status-msg.ok { color: #8affc1; }

.privacy-note {
  color: var(--text-dim);
  font-size: 0.85rem;
  text-align: center;
  margin: 14px 0 0;
}

footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  padding: 30px 20px 50px;
  position: relative;
  z-index: 1;
}

@media (max-width: 600px) {
  .panel { padding: 16px; border-radius: 16px; }
  .camera-controls { justify-content: center; }
  .btn { flex: 1 1 auto; }
}