/* ==========================================================================
   AI Image Prompt Builder (aipb-*) — dlsome-top
   Self-contained vanilla CSS. No CDN, no global pollution.
   PaperMod .dark class compatible. Hugo 0.158+ verified.
   ========================================================================== */

/* --- CSS variables (light theme) --- */
.aipb-tool {
  --aipb-bg: #ffffff;
  --aipb-bg-elev: #f8fafc;
  --aipb-bg-elev-2: #f1f5f9;
  --aipb-border: #e2e8f0;
  --aipb-fg: #0f172a;
  --aipb-fg-muted: #64748b;
  --aipb-fg-dim: #94a3b8;
  --aipb-primary: #6366f1;
  --aipb-primary-hover: #4f46e5;
  --aipb-accent: #ec4899;
  --aipb-success: #10b981;
  --aipb-warn: #f59e0b;
  --aipb-err: #ef4444;
  --aipb-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --aipb-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --aipb-shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);
  --aipb-radius: 8px;
  --aipb-radius-sm: 4px;
  --aipb-radius-lg: 12px;
  --aipb-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --aipb-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  display: block;
  margin: 1.5rem 0;
  padding: 0;
  font-family: var(--aipb-sans);
  color: var(--aipb-fg);
  background: var(--aipb-bg);
  border: 1px solid var(--aipb-border);
  border-radius: var(--aipb-radius-lg);
  overflow: hidden;
}

/* --- Dark theme (PaperMod .dark) --- */
.dark .aipb-tool {
  --aipb-bg: #1e1e24;
  --aipb-bg-elev: #2a2a32;
  --aipb-bg-elev-2: #34343c;
  --aipb-border: #3a3a44;
  --aipb-fg: #e2e8f0;
  --aipb-fg-muted: #94a3b8;
  --aipb-fg-dim: #64748b;
  --aipb-primary: #818cf8;
  --aipb-primary-hover: #6366f1;
  --aipb-accent: #f472b6;
  --aipb-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --aipb-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --aipb-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* --- Disclaimer (top) --- */
.aipb-disclaimer {
  padding: 0.875rem 1.25rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(236, 72, 153, 0.08));
  border-bottom: 1px solid var(--aipb-border);
  font-size: 0.825rem;
  line-height: 1.5;
  color: var(--aipb-fg-muted);
}
.aipb-disclaimer strong {
  color: var(--aipb-fg);
}
.aipb-disclaimer .aipb-warn-icon {
  display: inline-block;
  margin-right: 0.375rem;
  font-size: 1rem;
}

/* --- Model tabs (top) --- */
.aipb-model-tabs {
  display: flex;
  gap: 0;
  padding: 0;
  background: var(--aipb-bg-elev);
  border-bottom: 1px solid var(--aipb-border);
  overflow-x: auto;
}
.aipb-model-tab {
  flex: 1;
  min-width: 110px;
  padding: 0.75rem 1rem;
  border: 0;
  background: transparent;
  color: var(--aipb-fg-muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.aipb-model-tab:hover {
  color: var(--aipb-fg);
  background: var(--aipb-bg-elev-2);
}
.aipb-model-tab.active {
  color: var(--aipb-primary);
  border-bottom-color: var(--aipb-primary);
  background: var(--aipb-bg);
}

/* --- Main layout (2 columns) --- */
.aipb-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  min-height: 600px;
}
@media (max-width: 900px) {
  .aipb-main {
    grid-template-columns: 1fr;
  }
}

/* --- Left: Compose panel --- */
.aipb-compose {
  padding: 1.25rem;
  border-right: 1px solid var(--aipb-border);
  overflow-y: auto;
  max-height: 800px;
}
@media (max-width: 900px) {
  .aipb-compose {
    border-right: 0;
    border-bottom: 1px solid var(--aipb-border);
    max-height: none;
  }
}

/* --- Right: Output panel --- */
.aipb-output {
  display: flex;
  flex-direction: column;
  background: var(--aipb-bg-elev);
  overflow: hidden;
}
.aipb-output-header {
  padding: 0.75rem 1.25rem;
  background: var(--aipb-bg);
  border-bottom: 1px solid var(--aipb-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.825rem;
}
.aipb-token-count {
  font-family: var(--aipb-mono);
  color: var(--aipb-fg-muted);
  font-size: 0.8rem;
}
.aipb-token-count strong {
  color: var(--aipb-primary);
  font-weight: 700;
}
.aipb-output-text {
  flex: 1;
  margin: 0;
  padding: 1.25rem;
  font-family: var(--aipb-mono);
  font-size: 0.825rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--aipb-fg);
  background: var(--aipb-bg);
  overflow-y: auto;
  min-height: 250px;
  max-height: 500px;
}
.aipb-output-text .aipb-token-highlight {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(236, 72, 153, 0.18));
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  font-weight: 600;
}
.aipb-output-actions {
  display: flex;
  gap: 0.5rem;
  padding: 0.875rem 1.25rem;
  background: var(--aipb-bg);
  border-top: 1px solid var(--aipb-border);
  flex-wrap: wrap;
}

/* --- Buttons --- */
.aipb-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--aipb-border);
  background: var(--aipb-bg);
  color: var(--aipb-fg);
  border-radius: var(--aipb-radius-sm);
  font-family: inherit;
  font-size: 0.825rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.aipb-btn:hover {
  background: var(--aipb-bg-elev);
  border-color: var(--aipb-primary);
}
.aipb-btn-primary {
  background: var(--aipb-primary);
  color: #ffffff;
  border-color: var(--aipb-primary);
}
.aipb-btn-primary:hover {
  background: var(--aipb-primary-hover);
  border-color: var(--aipb-primary-hover);
}
.aipb-btn-small {
  padding: 0.375rem 0.625rem;
  font-size: 0.75rem;
}
.aipb-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* --- Templates section --- */
.aipb-templates {
  margin-bottom: 1.25rem;
}
.aipb-templates-title {
  margin: 0 0 0.625rem 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--aipb-fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.aipb-cat-bar {
  display: flex;
  gap: 0.375rem;
  margin-bottom: 0.625rem;
  flex-wrap: wrap;
}
.aipb-cat {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.375rem 0.625rem;
  border: 1px solid var(--aipb-border);
  background: var(--aipb-bg);
  color: var(--aipb-fg-muted);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}
.aipb-cat:hover {
  border-color: var(--aipb-primary);
  color: var(--aipb-fg);
}
.aipb-cat.active {
  background: var(--aipb-primary);
  color: #ffffff;
  border-color: var(--aipb-primary);
}
.aipb-cat-count {
  font-size: 0.7rem;
  opacity: 0.85;
}
.aipb-template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.5rem;
  max-height: 280px;
  overflow-y: auto;
  padding-right: 0.25rem;
}
.aipb-template-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 0.625rem;
  background: var(--aipb-bg);
  border: 1px solid var(--aipb-border);
  border-radius: var(--aipb-radius);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: left;
  font-family: inherit;
  color: var(--aipb-fg);
}
.aipb-template-card:hover {
  border-color: var(--aipb-primary);
  box-shadow: var(--aipb-shadow-sm);
  transform: translateY(-1px);
}
.aipb-template-card.active {
  border-color: var(--aipb-primary);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(236, 72, 153, 0.05));
  box-shadow: var(--aipb-shadow-sm);
}
.aipb-card-emoji {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}
.aipb-card-title {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.3;
}
.aipb-card-cat {
  display: inline-block;
  margin-top: 0.375rem;
  padding: 0.1rem 0.375rem;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* --- Form fields --- */
.aipb-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.aipb-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.aipb-field-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--aipb-fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.aipb-field-hint {
  font-size: 0.7rem;
  color: var(--aipb-fg-dim);
  margin-top: 0.25rem;
}
.aipb-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--aipb-border);
  background: var(--aipb-bg);
  color: var(--aipb-fg);
  border-radius: var(--aipb-radius-sm);
  font-family: inherit;
  font-size: 0.85rem;
  transition: border-color 0.15s ease;
}
.aipb-input:focus {
  outline: 0;
  border-color: var(--aipb-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
.aipb-textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--aipb-border);
  background: var(--aipb-bg);
  color: var(--aipb-fg);
  border-radius: var(--aipb-radius-sm);
  font-family: var(--aipb-mono);
  font-size: 0.825rem;
  resize: vertical;
  min-height: 60px;
  transition: border-color 0.15s ease;
}
.aipb-textarea:focus {
  outline: 0;
  border-color: var(--aipb-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* --- Chips (multiselect) --- */
.aipb-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}
.aipb-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.375rem 0.625rem;
  border: 1px solid var(--aipb-border);
  background: var(--aipb-bg);
  color: var(--aipb-fg-muted);
  border-radius: 999px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}
.aipb-chip:hover {
  border-color: var(--aipb-primary);
  color: var(--aipb-fg);
}
.aipb-chip.active {
  background: var(--aipb-primary);
  color: #ffffff;
  border-color: var(--aipb-primary);
}
.aipb-chip-weight {
  font-family: var(--aipb-mono);
  font-size: 0.65rem;
  opacity: 0.85;
  margin-left: 0.25rem;
  padding: 0.1rem 0.25rem;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 3px;
}
.aipb-chip.active .aipb-chip-weight {
  background: rgba(255, 255, 255, 0.25);
}

/* --- Ratio buttons --- */
.aipb-ratio-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.375rem;
}
.aipb-ratio {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem;
  border: 1px solid var(--aipb-border);
  background: var(--aipb-bg);
  color: var(--aipb-fg-muted);
  border-radius: var(--aipb-radius-sm);
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s ease;
}
.aipb-ratio:hover {
  border-color: var(--aipb-primary);
  color: var(--aipb-fg);
}
.aipb-ratio.active {
  background: var(--aipb-primary);
  color: #ffffff;
  border-color: var(--aipb-primary);
}
.aipb-ratio-icon {
  font-family: var(--aipb-mono);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.125rem;
}
.aipb-ratio-label {
  font-size: 0.65rem;
  opacity: 0.85;
}

/* --- Negative prompts --- */
.aipb-negative {
  padding: 1rem;
  background: var(--aipb-bg-elev);
  border: 1px solid var(--aipb-border);
  border-radius: var(--aipb-radius);
  margin-bottom: 1.25rem;
}
.aipb-negative-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.625rem;
}
.aipb-negative-title {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--aipb-fg);
}
.aipb-negative-count {
  font-family: var(--aipb-mono);
  font-size: 0.75rem;
  color: var(--aipb-fg-muted);
}
.aipb-neg-categories {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.aipb-neg-cat {
  padding: 0.5rem;
  background: var(--aipb-bg);
  border: 1px solid var(--aipb-border);
  border-radius: var(--aipb-radius-sm);
}
.aipb-neg-cat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.375rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--aipb-fg);
}
.aipb-neg-cat-label {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}
.aipb-neg-cat-count {
  font-family: var(--aipb-mono);
  font-size: 0.7rem;
  color: var(--aipb-fg-muted);
}
.aipb-neg-cat-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.aipb-neg-item {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--aipb-bg-elev);
  border: 1px solid var(--aipb-border);
  border-radius: 999px;
  color: var(--aipb-fg-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}
.aipb-neg-item:hover {
  border-color: var(--aipb-warn);
  color: var(--aipb-fg);
}
.aipb-neg-item.active {
  background: var(--aipb-warn);
  color: #ffffff;
  border-color: var(--aipb-warn);
}
.aipb-neg-custom {
  margin-top: 0.625rem;
  display: flex;
  gap: 0.375rem;
  align-items: center;
}
.aipb-neg-custom-input {
  flex: 1;
}
.aipb-neg-disabled-msg {
  margin-top: 0.625rem;
  padding: 0.5rem;
  background: rgba(245, 158, 11, 0.1);
  border-left: 3px solid var(--aipb-warn);
  border-radius: var(--aipb-radius-sm);
  font-size: 0.75rem;
  color: var(--aipb-fg-muted);
}

/* --- Quality gate / warnings --- */
.aipb-warn {
  padding: 0.625rem 0.875rem;
  background: rgba(245, 158, 11, 0.1);
  border-left: 3px solid var(--aipb-warn);
  border-radius: var(--aipb-radius-sm);
  font-size: 0.8rem;
  color: var(--aipb-fg);
  margin: 0.5rem 0;
}
.aipb-warn-icon {
  display: inline-block;
  margin-right: 0.375rem;
}
.aipb-error {
  padding: 0.625rem 0.875rem;
  background: rgba(239, 68, 68, 0.1);
  border-left: 3px solid var(--aipb-err);
  border-radius: var(--aipb-radius-sm);
  font-size: 0.8rem;
  color: var(--aipb-fg);
  margin: 0.5rem 0;
}
.aipb-success {
  padding: 0.625rem 0.875rem;
  background: rgba(16, 185, 129, 0.1);
  border-left: 3px solid var(--aipb-success);
  border-radius: var(--aipb-radius-sm);
  font-size: 0.8rem;
  color: var(--aipb-fg);
  margin: 0.5rem 0;
}

/* --- Toast --- */
.aipb-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 0.625rem 1rem;
  background: var(--aipb-fg);
  color: var(--aipb-bg);
  border-radius: var(--aipb-radius);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--aipb-shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s ease;
  z-index: 9999;
}
.aipb-toast-show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* --- Search box --- */
.aipb-search {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--aipb-border);
  background: var(--aipb-bg);
  color: var(--aipb-fg);
  border-radius: var(--aipb-radius-sm);
  font-family: inherit;
  font-size: 0.825rem;
  margin-bottom: 0.5rem;
}
.aipb-search:focus {
  outline: 0;
  border-color: var(--aipb-primary);
}

/* --- Empty state --- */
.aipb-empty {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--aipb-fg-dim);
  font-size: 0.85rem;
}

/* --- Responsive tweaks --- */
@media (max-width: 600px) {
  .aipb-tool {
    border-radius: var(--aipb-radius);
  }
  .aipb-model-tab {
    min-width: 90px;
    padding: 0.625rem 0.75rem;
    font-size: 0.8rem;
  }
  .aipb-ratio-buttons {
    grid-template-columns: repeat(2, 1fr);
  }
  .aipb-output-text {
    font-size: 0.75rem;
  }
}

/* --- Print --- */
@media print {
  .aipb-model-tabs,
  .aipb-output-actions,
  .aipb-templates,
  .aipb-negative,
  .aipb-disclaimer {
    display: none !important;
  }
  .aipb-tool {
    border: 1px solid #000;
  }
}