:root {
  --bg: #f5f5f7;
  --card-bg: #ffffff;
  --text: #1c1c1e;
  --muted: #6e6e73;
  --accent: #0a7cff;
  --accent-text: #ffffff;
  --danger: #ff3b30;
  --border: #e2e2e6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: 96px;
}

.app-header {
  padding: 20px 16px 12px;
  text-align: center;
}
.app-header h1 { margin: 0 0 4px; font-size: 1.3rem; }
.subtitle { margin: 0; color: var(--muted); font-size: 0.9rem; }

.step { padding: 0 16px 24px; max-width: 720px; margin: 0 auto; }
.hidden { display: none !important; }

.upload-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 48px 16px;
  border: 2px dashed var(--border);
  border-radius: 16px;
  background: var(--card-bg);
  cursor: pointer;
  color: var(--muted);
}
.upload-icon { font-size: 2.2rem; color: var(--accent); }
.upload-box input[type="file"] { display: none; }

.card-list { display: flex; flex-direction: column; gap: 20px; margin-bottom: 16px; }

.photo-card {
  background: var(--card-bg);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.crop-viewport {
  width: 100%;
  aspect-ratio: 1000 / 1600;
  max-height: 70vh;
  background: #111;
  overflow: hidden;
}
.crop-viewport img { display: block; max-width: 100%; }
.bg-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 10px 14px 0;
  font-size: 0.8rem;
  color: var(--muted);
}
.bg-label { flex-basis: 100%; font-size: 0.75rem; }
.bg-swatches { display: flex; gap: 6px; }
.bg-swatch {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border);
  padding: 0;
  cursor: pointer;
}
.bg-swatch.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent) inset; }
.bg-color-input {
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}
.dup-toggle {
  flex-basis: 100%;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text);
  margin-top: 4px;
}

.fit-mode-row {
  display: flex;
  gap: 14px;
  padding: 8px 14px 0;
  font-size: 0.85rem;
  color: var(--text);
}
.fit-mode-row label { display: flex; align-items: center; gap: 4px; cursor: pointer; }

.card-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--muted);
}
.card-controls button {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.85rem;
  padding: 4px 8px;
  cursor: pointer;
  white-space: nowrap;
}
.card-controls button.remove { color: var(--danger); }
.card-status { flex-basis: 100%; }

.add-more {
  display: block;
  text-align: center;
  padding: 12px;
  color: var(--accent);
  cursor: pointer;
  margin-bottom: 16px;
}
.add-more input { display: none; }

.primary-btn, .secondary-btn {
  display: block;
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
}
.primary-btn { background: var(--accent); color: var(--accent-text); }
.primary-btn:disabled { background: var(--border); color: var(--muted); cursor: not-allowed; }
.secondary-btn { background: var(--card-bg); color: var(--text); border: 1px solid var(--border); margin-bottom: 10px; }

.review-summary { color: var(--muted); font-size: 0.9rem; text-align: center; }
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}
.review-grid img {
  width: 100%;
  aspect-ratio: 1000 / 1600;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  cursor: zoom-in;
}
.review-actions { display: flex; flex-direction: column; }

#done-message { text-align: center; padding: 40px 0; font-size: 1.05rem; }

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 100;
  padding: 24px;
}
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  min-height: 0;
  flex: 1 1 auto;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
}
.lightbox-close {
  position: fixed;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
}
.lightbox-edit {
  flex: 0 0 auto;
  padding: 12px 28px;
  border-radius: 10px;
  border: none;
  background: var(--accent);
  color: var(--accent-text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--text);
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.9rem;
  max-width: 90vw;
  z-index: 50;
}