:root {
  --bg: #f4f2ef;
  --panel: #ffffff;
  --text: #222222;
  --muted: #5e5e5e;
  --line: #d9d6d2;
  --accent: #1e5aa8;
  --accent-soft: #e6eef9;
  --danger: #b42318;
  font-family: "Avenir Next", "Avenir", "Futura", "Trebuchet MS", sans-serif;
}

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

body {
  margin: 0;
  background: radial-gradient(circle at top left, rgba(30, 90, 168, 0.08), transparent 45%),
    linear-gradient(180deg, #f7f5f2, #efedea);
  color: var(--text);
  min-height: 100vh;
}

h1 {
  margin: 8px 0 10px;
  font-size: 26px;
}

p {
  margin: 0 0 8px;
}

.topbar {
  padding: 28px 32px 10px;
}

.eyebrow {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--accent);
}

.subtitle {
  color: var(--muted);
  max-width: 640px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(360px, 1.5fr) minmax(220px, 1fr);
  gap: 24px;
  padding: 16px 32px 40px;
  max-width: 1360px;
  margin: 0 auto;
}

.panel-column {
  display: grid;
  gap: 18px;
}

.preview-panel {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.preview-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 20px;
  border-radius: 14px;
  width: 100%;
}

#canvasPreview {
  width: 100%;
  border-radius: 10px;
  background: #dcdcdc;
  display: block;
  border: 1px dashed #c7c2bd;
  touch-action: none;
}

.preview-note {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}

.card-title {
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 8px;
}

.required {
  color: var(--danger);
  margin-right: 6px;
}

.muted {
  color: var(--muted);
}

label {
  display: block;
  font-size: 13px;
  margin: 12px 0 6px;
  color: var(--muted);
}

input,
select,
textarea,
button {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #cfcac4;
  padding: 10px 12px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}

input[type="range"] {
  padding: 0;
  accent-color: var(--accent);
}

button {
  cursor: pointer;
  font-weight: 600;
  border: 1px solid transparent;
}

.primary {
  background: var(--accent);
  color: #fff;
}

.ghost {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text);
}

.ghost.danger {
  color: var(--danger);
  border-color: #f0c0b7;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 10px 0 8px;
}

.seg-btn {
  border: 1px solid #9aa7b7;
  background: #fff;
  font-weight: 600;
  padding: 8px 10px;
  border-radius: 10px;
  color: #222;
}

.seg-btn.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
  background: #f3f7ff;
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}

.control {
  background: #f7f6f3;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #e2ded9;
}

.stepper {
  display: grid;
  grid-template-columns: 42px 1fr 42px;
  gap: 8px;
  align-items: center;
}

.stepper input[type="number"] {
  text-align: center;
  padding: 8px 6px;
}

.step-btn {
  height: 38px;
  border-radius: 10px;
  border: 1px solid #cfcac4;
  background: #fff;
  font-size: 18px;
  line-height: 1;
}

.edit-panel {
  margin-top: 16px;
  background: #f8f6f3;
  border-radius: 12px;
  border: 1px solid #e5e1dc;
  padding: 12px;
}

.upload-grid {
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: 10px;
  align-items: center;
}

.upload-drop {
  border: 2px dashed #d6d1cb;
  border-radius: 12px;
  padding: 26px 16px;
  text-align: center;
  color: var(--muted);
  background: #faf8f6;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.upload-drop.dragging {
  border-color: var(--accent);
  background: #f0f4fb;
}

.upload-icon {
  font-size: 28px;
  color: #b8b3ad;
  margin-bottom: 6px;
}

.upload-text {
  font-size: 14px;
}

.progress-bar {
  height: 6px;
  background: #efece8;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 10px;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.15s ease;
}

.upload-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 10px;
}

.status {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text);
}

.status.error {
  color: var(--danger);
}

.status.hint {
  color: var(--muted);
}

.preview-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: #f3f1ee;
  border: 1px solid #e2ded9;
  aspect-ratio: 4 / 5;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.preview-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
}

.preview-card.has-image img {
  display: block;
}

.preview-zoom {
  position: absolute;
  right: 10px;
  bottom: 10px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 18px;
  display: none;
}

.preview-card.has-image .preview-zoom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.modal.open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
}

.modal-content {
  position: relative;
  max-width: min(90vw, 900px);
  max-height: 90vh;
  background: #fff;
  border-radius: 16px;
  padding: 12px;
  z-index: 1;
}

.modal-content img {
  width: 100%;
  height: auto;
  display: block;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  font-size: 14px;
  color: var(--text);
}

.toggle input {
  width: 18px;
  height: 18px;
}
.template-meta {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

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

  .preview-wrap {
    padding: 16px;
  }

  .edit-panel {
    margin-top: 12px;
  }
}