:root {
  /* Brand colors */
  --bd-primary: #2563eb;
  --bd-primary-hover: #1d4ed8;
  --bd-primary-light: #eff6ff;
  --bd-primary-text: #1e40af;

  /* Neutral */
  --bd-bg: #ffffff;
  --bd-bg-secondary: #f8fafc;
  --bd-bg-tertiary: #f1f5f9;
  --bd-border: #e2e8f0;
  --bd-border-strong: #cbd5e1;

  /* Text */
  --bd-text: #0f172a;
  --bd-text-secondary: #475569;
  --bd-text-tertiary: #94a3b8;

  /* Semantic */
  --bd-success: #16a34a;
  --bd-success-light: #f0fdf4;
  --bd-warning: #b45309;
  --bd-warning-light: #fffbeb;
  --bd-danger: #dc2626;
  --bd-danger-light: #fef2f2;

  /* Shape and shadow */
  --bd-radius-sm: 6px;
  --bd-radius-md: 8px;
  --bd-radius-lg: 12px;
  --bd-radius-xl: 16px;
  --bd-radius-full: 9999px;
  --bd-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --bd-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);

  /* Typography */
  --bd-font: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bd-font-mono: "JetBrains Mono", "Fira Code", "Courier New", monospace;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--bd-font);
  color: var(--bd-text);
  background: var(--bd-bg-secondary);
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

.bd-title {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--bd-text);
}

.bd-heading {
  font-size: 15px;
  font-weight: 600;
  color: var(--bd-text);
}

.bd-body {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--bd-text);
}

.bd-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--bd-text-secondary);
}

.bd-hint {
  font-size: 12px;
  font-weight: 400;
  color: var(--bd-text-tertiary);
}

.bd-mono {
  font-family: var(--bd-font-mono);
  font-size: 12px;
}

/* ===== Layout ===== */
.bd-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bd-bg);
  border-bottom: 1px solid var(--bd-border);
}

.bd-topbar-inner {
  max-width: 1100px;
  height: 52px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.bd-topbar-left,
.bd-topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bd-topbar-divider {
  width: 1px;
  height: 16px;
  background: var(--bd-border);
}

.bd-back {
  font-size: 13px;
  text-decoration: none;
  color: var(--bd-text-secondary);
}

.bd-back:hover {
  color: var(--bd-text);
}

.bd-main {
  flex: 1;
  padding: 24px;
}

.bd-container {
  max-width: 1100px;
  margin: 0 auto;
}

.bd-footer {
  padding: 16px;
  text-align: center;
  border-top: 1px solid var(--bd-border);
  background: var(--bd-bg);
}

.bd-link {
  color: var(--bd-primary);
  text-decoration: none;
}

.bd-link:hover {
  text-decoration: underline;
}

/* ===== Topbar Tabs ===== */
.bd-tabs {
  display: flex;
  gap: 2px;
}

.bd-tab {
  height: 52px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  border-bottom: 2px solid transparent;
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--bd-text-secondary);
  transition: color 0.15s, border-color 0.15s;
}

.bd-tab:hover {
  color: var(--bd-text);
}

.bd-tab.active {
  color: var(--bd-primary);
  border-bottom-color: var(--bd-primary);
}

/* ===== Reusable Components ===== */
.bd-btn {
  height: 36px;
  padding: 0 14px;
  border-radius: var(--bd-radius-md);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}

.bd-btn:active {
  transform: scale(0.97);
}

.bd-btn-primary {
  color: #fff;
  background: var(--bd-primary);
  border-color: var(--bd-primary);
}

.bd-btn-primary:hover {
  background: var(--bd-primary-hover);
  border-color: var(--bd-primary-hover);
}

.bd-btn-secondary {
  color: var(--bd-text);
  background: var(--bd-bg);
  border-color: var(--bd-border-strong);
}

.bd-btn-secondary:hover {
  background: var(--bd-bg-tertiary);
}

.bd-btn-ghost {
  color: var(--bd-text-secondary);
  background: transparent;
  border-color: var(--bd-border);
}

.bd-btn-ghost:hover {
  color: var(--bd-text);
  background: var(--bd-bg-tertiary);
}

.bd-btn-sm {
  height: 28px;
  padding: 0 10px;
  font-size: 12px;
}

.bd-input {
  width: 100%;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-md);
  background: var(--bd-bg);
  color: var(--bd-text);
  font-size: 14px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.bd-input::placeholder {
  color: var(--bd-text-tertiary);
}

.bd-input:focus {
  outline: none;
  border-color: var(--bd-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.bd-input-sm {
  height: 30px;
  font-size: 13px;
}

.bd-card {
  background: var(--bd-bg);
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-lg);
  overflow: hidden;
}

.bd-card-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--bd-border);
  background: var(--bd-bg-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.bd-card-body {
  padding: 16px;
}

.bd-badge {
  height: 20px;
  padding: 0 8px;
  border-radius: var(--bd-radius-full);
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 500;
}

.bd-badge-blue {
  color: var(--bd-primary-text);
  background: var(--bd-primary-light);
}

.bd-badge-orange {
  color: #b45309;
  background: #fff7ed;
}

.bd-badge-green {
  color: var(--bd-success);
  background: var(--bd-success-light);
}

.bd-badge-gray {
  color: var(--bd-text-secondary);
  background: var(--bd-bg-tertiary);
}

.bd-toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%) translateY(60px);
  opacity: 0;
  z-index: 1000;
  pointer-events: none;
  white-space: nowrap;
  background: var(--bd-text);
  color: var(--bd-bg);
  border-radius: var(--bd-radius-md);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--bd-shadow-md);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.bd-section-label {
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--bd-text-tertiary);
}

.bd-divider {
  height: 1px;
  margin: 20px 0;
  background: var(--bd-border);
}

.bd-kbd-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--bd-text-tertiary);
}

.bd-kbd {
  display: inline-block;
  padding: 2px 6px;
  border-radius: var(--bd-radius-sm);
  border: 1px solid var(--bd-border-strong);
  background: var(--bd-bg-secondary);
  color: var(--bd-text-secondary);
  font-size: 11px;
}

/* ===== Generator Page Modules ===== */
.generator-controls {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  margin-bottom: 16px;
}

.harmony-modes {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}

.harmony-mode {
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-full);
  background: var(--bd-bg);
  color: var(--bd-text-secondary);
  height: 30px;
  padding: 0 12px;
  font-size: 12px;
  cursor: pointer;
}

.harmony-mode.is-active {
  color: var(--bd-primary-text);
  border-color: var(--bd-primary);
  background: var(--bd-primary-light);
}

.palette-stage {
  height: 65vh;
  min-height: 420px;
  display: flex;
  gap: 8px;
}

.swatch {
  position: relative;
  flex: 1;
  border-radius: var(--bd-radius-xl);
  overflow: hidden;
  transition: flex 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.swatch:hover {
  flex: 1.65;
}

.swatch-overlay {
  position: absolute;
  inset: 0;
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 0;
  transition: opacity 0.15s;
}

.swatch:hover .swatch-overlay,
.swatch.is-locked .swatch-overlay {
  opacity: 1;
}

.swatch-top,
.swatch-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.swatch-icon-btn {
  width: 32px;
  height: 32px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: var(--bd-radius-full);
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.hex-chip-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0;
}

.hex-chip {
  height: 32px;
  border-radius: var(--bd-radius-md);
  border: 1px solid var(--bd-border);
  border-left-width: 4px;
  background: var(--bd-bg);
  color: var(--bd-text-secondary);
  font-family: var(--bd-font-mono);
  font-size: 12px;
  cursor: pointer;
}

.palette-actions {
  margin-top: 12px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.export-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.preview-shell {
  margin-top: 16px;
  background: var(--bd-bg);
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-lg);
  box-shadow: var(--bd-shadow-sm);
  overflow: hidden;
}

.preview-top {
  padding: 12px 16px;
  border-bottom: 1px solid var(--bd-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.preview-dashboard {
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-lg);
  overflow: hidden;
  background: var(--pv-bg, #ffffff);
  color: var(--pv-text, #0f172a);
}

.preview-navbar {
  height: 42px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--pv-c1, #2563eb);
  color: #ffffff;
}

.preview-brand {
  font-size: 12px;
  font-weight: 600;
}

.preview-navdots {
  display: inline-flex;
  gap: 6px;
}

.preview-navdots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.65);
}

.preview-body {
  padding: 12px;
  display: grid;
  gap: 10px;
}

.preview-kpis {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.preview-kpi {
  padding: 10px;
  border: 1px solid var(--pv-border, #e2e8f0);
  border-left: 4px solid var(--accent, #0ea5e9);
  border-radius: var(--bd-radius-md);
  background: var(--pv-card, #ffffff);
}

.preview-kpi-label {
  font-size: 11px;
  color: var(--pv-muted, #64748b);
}

.preview-kpi-value {
  margin-top: 4px;
  font-size: 15px;
  font-weight: 600;
}

.preview-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 8px;
}

.preview-panel {
  padding: 10px;
  border-radius: var(--bd-radius-md);
  border: 1px solid var(--pv-border, #e2e8f0);
  background: var(--pv-card, #ffffff);
  min-height: 140px;
}

.preview-panel-title {
  font-size: 11px;
  margin-bottom: 8px;
  color: var(--pv-muted, #64748b);
}

.preview-bars {
  display: grid;
  gap: 7px;
}

.preview-bar-row {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  align-items: center;
  gap: 7px;
}

.preview-bar-row label {
  font-size: 11px;
  color: var(--pv-muted, #64748b);
}

.preview-bar-track {
  height: 8px;
  border-radius: var(--bd-radius-full);
  background: var(--pv-track, #f1f5f9);
  overflow: hidden;
}

.preview-bar-fill {
  height: 100%;
  border-radius: inherit;
}

.preview-bar-row span {
  font-size: 11px;
}

.preview-donut {
  width: 92px;
  height: 92px;
  margin: 2px auto 8px;
  border-radius: 50%;
  background: conic-gradient(var(--pv-c2) 0 38%, var(--pv-c3) 38% 66%, var(--pv-c4) 66% 84%, var(--pv-c5) 84% 100%);
  position: relative;
}

.preview-donut::after {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 50%;
  background: var(--pv-bg, #ffffff);
}

.preview-donut-legend {
  display: grid;
  gap: 4px;
}

.preview-legend-item {
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--pv-muted, #64748b);
}

.preview-legend-item i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 6px;
  display: inline-block;
}

.preview-bottom {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 8px;
  align-items: stretch;
}

.preview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}

.preview-table th,
.preview-table td {
  text-align: left;
  padding: 6px 4px;
  border-bottom: 1px dashed var(--pv-border, #e2e8f0);
}

.preview-table th {
  color: var(--pv-muted, #64748b);
  font-weight: 500;
}

.preview-chip {
  display: inline-flex;
  align-items: center;
  border-radius: var(--bd-radius-full);
  height: 20px;
  padding: 0 8px;
  font-size: 10px;
  color: #ffffff;
  background: var(--pv-c4, #84cc16);
}

.preview-action {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 10px;
}

.preview-action-list {
  display: grid;
  gap: 7px;
}

.preview-action-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 11px;
  color: var(--pv-muted, #64748b);
}

.preview-action-item strong {
  font-size: 12px;
  color: var(--pv-text, #0f172a);
}

.preview-cta {
  height: 30px;
  width: 100%;
  border: none;
  border-radius: var(--bd-radius-md);
  padding: 0 12px;
  color: #ffffff;
  background: var(--pv-c5, #f59e0b);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
}

/* ===== Image Page Modules ===== */
.upload-dropzone {
  border: 1.5px dashed var(--bd-border-strong);
  border-radius: var(--bd-radius-lg);
  background: var(--bd-bg);
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  color: var(--bd-text-secondary);
  transition: border-color 0.15s, background 0.15s;
}

.upload-dropzone.is-dragover {
  border-color: var(--bd-primary);
  background: var(--bd-primary-light);
}

.image-preview {
  margin-top: 12px;
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  border-radius: var(--bd-radius-md);
  border: 1px solid var(--bd-border);
  background: var(--bd-bg);
}

.analysis-loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--bd-text-secondary);
  font-size: 13px;
}

.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--bd-bg-tertiary);
}

.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  animation: shimmer 1.1s infinite;
}

@keyframes shimmer {
  100% {
    transform: translateX(100%);
  }
}

/* ===== Explore Page Modules ===== */
.explore-toolbar {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  margin-bottom: 16px;
}

.filter-group {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-pill {
  height: 30px;
  padding: 0 12px;
  border-radius: var(--bd-radius-full);
  border: 1px solid var(--bd-border);
  background: var(--bd-bg);
  color: var(--bd-text-secondary);
  font-size: 12px;
  cursor: pointer;
}

.filter-pill.is-active {
  border-color: var(--bd-primary);
  background: var(--bd-primary-light);
  color: var(--bd-primary-text);
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.palette-card {
  background: var(--bd-bg);
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-lg);
  overflow: hidden;
}

.palette-strip {
  height: 54px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}

.palette-meta {
  padding: 12px;
  display: grid;
  gap: 10px;
}

.palette-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ===== Utilities ===== */
.u-hidden {
  display: none !important;
}

.u-visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .bd-topbar-inner,
  .bd-container {
    max-width: 100%;
  }

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

@media (max-width: 768px) {
  .bd-main {
    padding: 16px;
  }

  .bd-topbar-inner {
    padding: 0 16px;
    height: auto;
    min-height: 52px;
    flex-wrap: wrap;
    align-content: center;
    gap: 8px 12px;
  }

  .bd-tabs {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .generator-controls,
  .explore-toolbar {
    grid-template-columns: 1fr;
  }

  .palette-stage {
    min-height: 360px;
  }

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

  .palette-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .palette-grid {
    grid-template-columns: 1fr;
  }

  .preview-kpis {
    grid-template-columns: 1fr;
  }

  .preview-grid,
  .preview-bottom {
    grid-template-columns: 1fr;
  }
}