:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --ink: #24211d;
  --muted: #746e64;
  --line: #d8d0c3;
  --panel: #fffdf8;
  --panel-alt: #fbf8f1;
  --accent: #176b63;
  --accent-ink: #ffffff;
  --danger: #a23624;
  --shadow: 0 14px 40px rgba(40, 33, 24, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  padding: 24px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(320px, 440px) minmax(420px, 1fr);
  gap: 24px;
  max-width: 1320px;
  margin: 0 auto;
}

.editor,
.preview-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.editor {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px;
}

.panel-heading h1,
.preview-toolbar h2 {
  margin: 4px 0 0;
  font-size: 24px;
  line-height: 1.2;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.field-group {
  display: grid;
  gap: 12px;
  min-width: 0;
  margin: 0;
  padding: 16px;
  background: var(--panel-alt);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.field-group legend {
  padding: 0 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

label {
  display: grid;
  gap: 6px;
}

label span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(23, 107, 99, 0.14);
}

.custom-fields {
  display: grid;
  gap: 10px;
}

.custom-field-row {
  display: grid;
  grid-template-columns: minmax(92px, 0.8fr) minmax(140px, 1.2fr) 42px;
  gap: 8px;
  align-items: end;
}

.icon-button {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--danger);
  background: #fff7f4;
  border: 1px solid #e8b9ad;
  border-radius: 8px;
}

.secondary-button,
.primary-button {
  min-height: 42px;
  padding: 9px 14px;
  border-radius: 8px;
  font-weight: 700;
}

.secondary-button {
  color: var(--accent);
  background: #fff;
  border: 1px solid var(--accent);
}

.primary-button {
  color: var(--accent-ink);
  background: var(--accent);
  border: 1px solid var(--accent);
}

.avatar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(58px, 1fr));
  gap: 10px;
}

.avatar-option {
  position: relative;
  aspect-ratio: 1 / 1;
  padding: 0;
  overflow: hidden;
  background: #fff;
  border: 2px solid transparent;
  border-radius: 8px;
}

.avatar-option img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.avatar-option.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(23, 107, 99, 0.16);
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(42px, 1fr));
  gap: 10px;
}

.color-option {
  height: 42px;
  border: 2px solid transparent;
  border-radius: 8px;
}

.color-option.is-selected {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(36, 33, 29, 0.12);
}

.preview-panel {
  position: sticky;
  top: 24px;
  align-self: start;
  padding: 22px;
}

.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.share-message {
  min-height: 22px;
  margin: -8px 0 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.share-message a {
  color: var(--accent);
  font-weight: 700;
}

.share-message.is-error {
  color: var(--danger);
}

.canvas-wrap {
  width: 100%;
  padding: 18px;
  background: #e5ded2;
  border: 1px solid var(--line);
  border-radius: 8px;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  background: #fff;
  border-radius: 8px;
}

@media (max-width: 960px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    position: static;
  }
}

@media (max-width: 560px) {
  .app-shell {
    padding: 14px;
  }

  .editor,
  .preview-panel {
    padding: 16px;
  }

  .preview-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .custom-field-row {
    grid-template-columns: 1fr;
  }

  .icon-button {
    width: 100%;
  }
}