:root {
  --bg: #ffffff;
  --fg: #1f2937;
  --accent: #3b82f6;
  --accent-fg: #ffffff;

  --ui-bg: #f4f5f7;
  --ui-panel: #ffffff;
  --ui-border: #e2e5ea;
  --ui-text: #1f2937;
  --ui-muted: #6b7280;
}

* {
  box-sizing: border-box;
}

* a {
  text-decoration: none;
}

body {
  margin: 0;
  font-family: Helvetica, Verdana, Arial, sans-serif;
  background: var(--ui-bg);
  color: var(--ui-text);
  line-height: 1.5;
}

.app-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem clamp(1rem, 4vw, 1.5rem) 0;
}

.app-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
}

.app-header p {
  margin: 0;
  color: var(--ui-muted);
}

.layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 1.5rem);
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: clamp(1rem, 3vw, 1.5rem);
  align-items: start;
}

.panel {
  background: var(--ui-panel);
  border: 1px solid var(--ui-border);
  border-radius: 12px;
  padding: 1.25rem;
}

.panel h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
}

.heart {
  color: red;
}

/* Controls */
.color-field {
  padding: 0.85rem 0;
  border-top: 1px solid var(--ui-border);
}

.color-field:first-of-type {
  border-top: none;
  padding-top: 0;
}

.color-field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.color-field-header label {
  font-weight: 600;
}

.color-field-header input[type="color"] {
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: none;
  cursor: pointer;
  box-shadow: 0 0 0 1px var(--ui-border);
}

.color-field-header input[type="color"]::-webkit-color-swatch-wrapper,
.color-field-header input[type="color"]::-webkit-color-swatch-wrapper:focus {
  padding: 0;
  border-radius: 0;
  border: none;
  border-color: transparent;
  outline: none;
  box-shadow: none;
}

.color-field-header input[type="color"]::-webkit-color-swatch,
.color-field-header input[type="color"]::-moz-color-swatch {
  border: none;
  border-radius: 50%;
}

.color-field p {
  margin: 0.25rem 0 0.6rem;
  font-size: 0.8rem;
  color: var(--ui-muted);
}

.rgb-inputs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.rgb-inputs label {
  display: flex;
  flex-direction: column;
  min-width: 0;
  font-size: 0.75rem;
  color: var(--ui-muted);
  gap: 0.2rem;
}

.rgb-inputs input {
  width: 100%;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--ui-border);
  border-radius: 6px;
  font-size: 0.9rem;
}

.contrast-summary {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--ui-border);
  display: grid;
  gap: 0.4rem;
}

.contrast-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.contrast-label {
  font-size: 0.8rem;
  color: var(--ui-muted);
}

.contrast-value {
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.contrast-summary p {
  font-size: 0.75rem;
  color: var(--ui-muted);
}

.image-field {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--ui-border);
}

.image-field label {
  font-weight: 600;
}

.image-field p {
  margin: 0.25rem 0 0.6rem;
  font-size: 0.8rem;
  color: var(--ui-muted);
}

.image-dropzone {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
  text-align: center;
  border: 2px dashed var(--ui-border);
  border-radius: 10px;
  color: var(--ui-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.image-dropzone:hover,
.image-dropzone:focus-visible {
  border-color: var(--accent, #3b82f6);
  outline: none;
}

.image-dropzone.is-dragover {
  border-color: var(--accent, #3b82f6);
  background: color-mix(in srgb, #3b82f6 8%, transparent);
}

.image-remove-btn {
  margin-top: 0.6rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--ui-border);
  border-radius: 6px;
  background: none;
  color: var(--ui-muted);
  font-size: 0.8rem;
  cursor: pointer;
}

.image-remove-btn:hover {
  color: var(--fg);
}

.pub-card-photo {
  display: block;
  width: 100%;
  height: auto;
}

/* Preview column */
.preview-stage {
  display: flex;
  justify-content: center;
  padding: clamp(0.75rem, 4vw, 1.5rem);
  background: repeating-conic-gradient(#eef0f3 0% 25%, #f7f8fa 0% 50%) 50% / 24px
    24px;
  border-radius: 10px;
}

/* Publication card */
.pub-card {
  position: relative;
  width: 100%;
  max-width: 540px;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  padding: 1.1rem 1.25rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.pub-card-close {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 50%;
  background: color-mix(in srgb, var(--fg) 8%, transparent);
  color: var(--fg);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}

.pub-card-image {
  margin: -1.1rem -1.25rem 1rem;
  border-radius: 14px 14px 0 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--fg);
}

.pub-card-image svg {
  display: block;
  width: 100%;
  height: auto;
}

.pub-card h3 {
  margin: 0 1.5rem 0.4rem 0;
  font-size: 1.2rem;
}

.pub-card-desc {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--fg) 80%, transparent);
}

.pub-card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  font-size: 0.8rem;
  color: color-mix(in srgb, var(--fg) 60%, transparent);
}

.pub-card-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: currentColor;
}

.pub-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-top: 1px solid color-mix(in srgb, var(--fg) 10%, transparent);
  padding-top: 0.85rem;
}

.pub-card-author {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.pub-card-avatar {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  overflow: hidden;
}

.pub-card-avatar svg {
  display: block;
  width: 100%;
  height: 100%;
}

.pub-card-author-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.pub-card-author-name {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pub-card-author-sub {
  font-size: 0.75rem;
  color: color-mix(in srgb, var(--fg) 55%, transparent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pub-card-view-button {
  flex: none;
  border: none;
  border-radius: 999px;
  padding: 0.55rem 1rem;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

/* JSON output */
.json-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.5rem !important;
}

.copy-btn {
  border: 1px solid var(--ui-border);
  background: var(--ui-bg);
  color: var(--ui-text);
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
  font-size: 0.8rem;
  cursor: pointer;
}

.copy-btn.is-copied {
  background: #def7e5;
  border-color: #9ae0b1;
  color: #1f7a3d;
}

.json-output {
  margin: 0;
  padding: 1rem;
  background: #1e1e2e;
  color: #e6e6f0;
  border-radius: 10px;
  font-size: 0.8rem;
  overflow: auto;
}

.json-output .tok-key {
  color: #89ddff;
}

.json-output .tok-str {
  color: #c3e88d;
}

.json-output .tok-num {
  color: #f78c6c;
}

.json-output .tok-bool {
  color: #c792ea;
}

.json-output .tok-null {
  color: #ff5370;
}

.app-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.5rem clamp(1rem, 4vw, 1.5rem) 2.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ui-muted);
}

.app-footer a {
  color: var(--ui-text);
}

/* Responsiveness */
@media (max-width: 720px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .app-header h1 {
    font-size: 1.3rem;
  }
}

@media (max-width: 420px) {
  .pub-card-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
  }

  .pub-card-view-button {
    width: 100%;
    text-align: center;
  }
}