:root {
  --b-bg: #f4f5f9;
  --b-panel: #ffffff;
  --b-ink: #1f2233;
  --b-ink-soft: #6b7085;
  --b-line: #e4e6ef;
  --b-accent: #ff5fa2;
  --b-accent-2: #7c5cff;
  --b-radius: 14px;
  --b-shadow: 0 12px 34px rgba(31, 34, 51, 0.08);
}

body {
  background: var(--b-bg);
  color: var(--b-ink);
  font-family: 'Poppins', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

.builder-header {
  padding: 2rem 1.5rem 1rem;
  text-align: center;
}

.builder-header h1 {
  font-family: 'Fredoka', sans-serif;
  margin: 0 0 0.4rem;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
}

.builder-header p {
  margin: 0;
  color: var(--b-ink-soft);
}

.builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.5rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.5rem 4rem;
  align-items: start;
}

.panel {
  background: var(--b-panel);
  border: 1px solid var(--b-line);
  border-radius: var(--b-radius);
  padding: 1.3rem;
  box-shadow: var(--b-shadow);
}

.panel + .panel {
  margin-top: 1.2rem;
}

.panel h2 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.panel h2 .step {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--b-accent);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
}

.field {
  margin-bottom: 0.9rem;
}

.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--b-ink-soft);
}

.field input[type="text"],
.field input[type="number"],
.field input[type="date"],
.field input[type="url"],
.field select,
.field textarea {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--b-line);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.92rem;
  color: var(--b-ink);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--b-accent);
  box-shadow: 0 0 0 3px rgba(255, 95, 162, 0.15);
}

.field textarea {
  resize: vertical;
  min-height: 130px;
  line-height: 1.6;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.template-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.template-card {
  position: relative;
  border: 2px solid var(--b-line);
  border-radius: 12px;
  padding: 0.6rem 0.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
  background: #fff;
}

.template-card:hover {
  transform: translateY(-2px);
}

.template-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.template-card.selected {
  border-color: var(--b-accent);
  box-shadow: 0 0 0 3px rgba(255, 95, 162, 0.15);
}

.template-swatch {
  height: 44px;
  border-radius: 8px;
  margin-bottom: 0.4rem;
}

.template-swatch.pink { background: linear-gradient(135deg, #ffb6c1, #ff69b4, #ffd700); }
.template-swatch.bunny { background: linear-gradient(135deg, #f7a8b8, #c9a7eb, #b7e4c7); }
.template-swatch.duck { background: linear-gradient(135deg, #ffd966, #f28c28, #7fb069); }
.template-swatch.elegant { background: linear-gradient(135deg, #f3ecdd, #c6a15b, #3b3b3b); }

.template-card span {
  font-size: 0.76rem;
  font-weight: 600;
}

.photo-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 0.6rem;
  margin-top: 0.7rem;
}

.photo-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--b-line);
  background: #f7f7fb;
}

.photo-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.photo-item input {
  width: 100%;
  border: none;
  border-top: 1px solid var(--b-line);
  padding: 0.35rem 0.4rem;
  font-size: 0.72rem;
  font-family: inherit;
}

.photo-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 0.8rem;
  line-height: 1;
  display: grid;
  place-items: center;
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.segmented label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--b-line);
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--b-ink-soft);
}

.segmented input {
  accent-color: var(--b-accent);
}

.segmented label:has(input:checked) {
  border-color: var(--b-accent);
  color: var(--b-ink);
  background: rgba(255, 95, 162, 0.06);
}

.switches {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.switch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--b-line);
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.switch input {
  accent-color: var(--b-accent);
  width: 18px;
  height: 18px;
}

.preview-wrap {
  position: sticky;
  top: 1rem;
}

.preview-frame {
  width: 100%;
  height: 78vh;
  border: 1px solid var(--b-line);
  border-radius: var(--b-radius);
  background: #fff;
  box-shadow: var(--b-shadow);
}

.preview-note {
  font-size: 0.78rem;
  color: var(--b-ink-soft);
  margin: 0.6rem 0 0;
  text-align: center;
}

.actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 12px;
  border: none;
  font-weight: 700;
  font-size: 0.92rem;
  font-family: inherit;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--b-accent), var(--b-accent-2));
  color: #fff;
  flex: 1;
}

.btn-ghost {
  background: #eef0f7;
  color: var(--b-ink);
}

.result {
  margin-top: 1.2rem;
  border-top: 1px dashed var(--b-line);
  padding-top: 1.2rem;
}

.result.hidden {
  display: none;
}

.result h3 {
  margin: 0 0 0.8rem;
  font-size: 1rem;
}

.share-row {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
}

.share-row input {
  flex: 1;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--b-line);
  border-radius: 10px;
  font-size: 0.82rem;
  background: #f7f7fb;
}

.qr-box {
  display: flex;
  justify-content: center;
  margin-top: 1rem;
  padding: 0.8rem;
  background: #fff;
  border: 1px solid var(--b-line);
  border-radius: 12px;
  width: fit-content;
}

.edit-note {
  font-size: 0.78rem;
  color: var(--b-ink-soft);
  margin-top: 0.7rem;
  word-break: break-all;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%) translateY(20px);
  background: #1f2233;
  color: #fff;
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  font-size: 0.85rem;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 100;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.hint {
  font-size: 0.75rem;
  color: var(--b-ink-soft);
  margin-top: 0.35rem;
}

@media (max-width: 900px) {
  .builder-layout {
    grid-template-columns: 1fr;
  }

  .preview-wrap {
    position: static;
    order: -1;
  }

  .preview-frame {
    height: 62vh;
  }

  .template-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}