/* app.css — layout & components for the Face Animation tool. */

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
}

.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin: 0.5rem 0 0.75rem;
}

.lead {
  color: var(--color-muted);
  font-size: 1.05rem;
  max-width: 62ch;
}

.lead strong {
  color: var(--color-text);
}

/* Steps */
.step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 1.25rem 0;
  box-shadow: var(--shadow);
}

.step h2 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.9rem;
  font-size: 1.2rem;
}

.num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  font-size: 0.95rem;
  font-weight: 700;
  flex: none;
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover,
.dropzone:focus-visible,
.dropzone.drag {
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
  outline: none;
}

.dropzone p {
  margin: 0.25rem 0;
}

/* Photo strip */
.photo-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.thumb {
  position: relative;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg);
}

.thumb.active {
  border-color: var(--color-accent);
}

.thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  cursor: pointer;
}

.badge {
  position: absolute;
  top: 6px;
  left: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 999px;
  color: #fff;
}

.badge.ok {
  background: var(--color-ok);
}

.badge.todo {
  background: var(--color-todo);
}

.thumb-controls {
  display: flex;
  justify-content: flex-end;
  gap: 2px;
  padding: 4px;
}

.icon-btn {
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
}

.icon-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Marking */
.status {
  margin: 0 0 0.75rem;
  min-height: 1.4em;
}

.mark-wrap,
.preview-wrap {
  display: flex;
  justify-content: center;
  background: #0b1220;
  border-radius: var(--radius);
  padding: 0.5rem;
  overflow: auto;
}

.mark-canvas {
  cursor: crosshair;
  max-width: 100%;
  height: auto;
  touch-action: none;
}

.preview-canvas {
  max-width: 100%;
  height: auto;
  background:
    repeating-conic-gradient(#334155 0% 25%, #1e293b 0% 50%) 50% / 24px 24px;
  border-radius: 6px;
}

/* Loupe magnifier */
.loupe {
  position: fixed;
  z-index: 50;
  width: 120px;
  height: 120px;
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
  pointer-events: none;
}

/* Controls */
.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1rem;
}

.btn {
  font: inherit;
  font-weight: 600;
  padding: 0.5rem 0.95rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.btn:hover {
  border-color: var(--color-accent);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn.primary {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  border-color: var(--color-accent);
}

.btn.primary:hover {
  filter: brightness(1.05);
}

.btn.ghost {
  background: transparent;
}

.scrub {
  flex: 1 1 160px;
  min-width: 120px;
}

/* Settings */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
}

.settings-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.settings-grid select,
.settings-grid input[type="range"] {
  font: inherit;
  width: 100%;
}

.settings-grid select {
  padding: 0.4rem 0.5rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
}

.val {
  font-weight: 500;
  color: var(--color-muted);
}

/* Export */
.download-area {
  margin-top: 0.9rem;
}

.download-area .btn {
  display: inline-block;
}

/* About page */
.prose {
  max-width: 68ch;
}

.prose h2 {
  margin-top: 2rem;
}

.prose li {
  margin: 0.3rem 0;
}