@import url('../assets/tokens.css');

/* ===== 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);
}

img,
video {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

h1.bd-title {
  margin: 0;
  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);
  padding-top: env(safe-area-inset-top);
}

.bd-topbar-inner {
  max-width: 1100px;
  height: 52px;
  margin: 0 auto;
  padding: 0 max(24px, env(safe-area-inset-right)) 0 max(24px, env(safe-area-inset-left));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.bd-topbar-left,
.bd-topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.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;
  padding-left: max(24px, env(safe-area-inset-left));
  padding-right: max(24px, env(safe-area-inset-right));
  padding-bottom: max(24px, env(safe-area-inset-bottom));
}

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

.bd-footer {
  padding: 16px max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  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;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.bd-tab {
  flex-shrink: 0;
  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;
  overflow-wrap: break-word;
}

.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: max(20px, env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(60px);
  opacity: 0;
  z-index: 1000;
  pointer-events: none;
  box-sizing: border-box;
  max-width: calc(100vw - 24px - env(safe-area-inset-left) - env(safe-area-inset-right));
  white-space: normal;
  text-align: center;
  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 ===== */
.tool-page-intro {
  margin: 8px 0 20px;
}

.tool-page-intro h2 {
  margin: 5px 0 6px;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.tool-page-intro .bd-body {
  max-width: 680px;
  color: var(--bd-text-secondary);
}

.palette-intro {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin: 8px 0 20px;
}

.palette-intro h2 {
  margin: 5px 0 6px;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.palette-intro .bd-body {
  max-width: 620px;
  color: var(--bd-text-secondary);
}

.palette-section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin: 18px 0 10px;
}

.palette-section-heading h3 {
  margin-top: 4px;
  font-size: 15px;
  font-weight: 600;
}

.palette-section-heading .bd-hint {
  margin-bottom: 2px;
}

.control-field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.generator-controls {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  margin-bottom: 16px;
  align-items: end;
}

.harmony-modes {
  display: inline-flex;
  align-items: center;
  align-self: end;
  height: 36px;
  gap: 8px;
  flex-wrap: wrap;
}

#generateBtn {
  align-self: end;
}

.harmony-mode {
  border: 1px solid var(--bd-border);
  border-radius: var(--bd-radius-md);
  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: min(52vh, 520px);
  min-height: 340px;
  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);
}

@media (hover: hover) and (pointer: fine) {
  .swatch:hover {
    flex: 1.65;
  }
}

@media (hover: none) {
  .swatch .swatch-overlay {
    opacity: 1;
  }
}

.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;
}

.swatch-icon-btn svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.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;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.palette-actions .bd-btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.preview-shell {
  margin-top: 40px;
  background: #eef4ff;
  border: 1px solid #cbd9ee;
  border-radius: var(--bd-radius-lg);
  box-shadow: 0 10px 26px rgba(37, 99, 235, .08);
  overflow: hidden;
}

.image-empty-state {
  display: flex;
  min-height: 132px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 24px;
  text-align: center;
  border: 1px dashed var(--bd-border-strong);
  border-radius: var(--bd-radius-lg);
  background: var(--bd-bg);
  color: var(--bd-text-secondary);
}

.image-empty-state strong {
  font-size: 14px;
  color: var(--bd-text);
}

.image-empty-state span {
  max-width: 420px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--bd-text-tertiary);
}

.image-error-state {
  display: flex;
  min-height: 96px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 12px;
  padding: 18px 24px;
  text-align: center;
  border: 1px solid rgba(220, 38, 38, 0.24);
  border-radius: var(--bd-radius-lg);
  background: var(--bd-danger-light);
  color: var(--bd-danger);
}

.image-error-state strong {
  font-size: 13px;
}

.image-error-state span {
  max-width: 420px;
  font-size: 12px;
  line-height: 1.5;
  color: #991B1B;
}

.preview-top {
  padding: 18px 20px;
  background: rgba(255, 255, 255, .86);
  border-bottom: 1px solid #d7e2f1;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.preview-top-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.preview-top-copy .bd-heading {
  font-size: 16px;
  line-height: 1.35;
}

.preview-note {
  margin: 0;
  color: var(--bd-text-secondary);
  font-size: 12px;
  line-height: 1.45;
}

.preview-top > div:last-child {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}

.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);
}

#dashboardPreview {
  padding: 20px;
  background: #e7effd;
}

.preview-navbar {
  height: 42px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--pv-c1, #2563eb);
  color: var(--pv-c1-ink, #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: var(--pv-c1-ink, #ffffff);
  opacity: .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-sm);
  background: var(--pv-track, #f1f5f9);
  overflow: hidden;
}

.preview-bar-fill {
  height: 100%;
  border-radius: var(--bd-radius-sm);
}

.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-md);
  height: 20px;
  padding: 0 8px;
  font-size: 10px;
  color: var(--pv-c4-ink, #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: var(--pv-c5-ink, #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);
}

.upload-dropzone:focus-within {
  border-color: var(--bd-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .14);
}

.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-md);
  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 (min-width: 901px) and (max-width: 1200px) {
  .generator-controls {
    grid-template-columns: 1fr auto;
    row-gap: 10px;
  }

  .generator-controls .control-field {
    grid-column: 1 / -1;
  }

  .generator-controls .harmony-modes {
    justify-self: start;
  }

  .generator-controls #generateBtn {
    justify-self: end;
  }
}

@media (max-width: 900px) {
  .bd-main {
    padding-top: 16px;
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
    padding-bottom: max(16px, env(safe-area-inset-bottom));
  }

  .bd-topbar-inner {
    height: auto;
    min-height: 52px;
    flex-wrap: wrap;
    align-content: center;
    gap: 8px 12px;
    row-gap: 0;
    padding-left: max(58px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }

  .bd-tabs {
    width: 100%;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    padding-bottom: 2px;
    scrollbar-width: none;
  }

  .bd-tabs::-webkit-scrollbar {
    display: none;
  }

  .bd-tab {
    height: 48px;
    padding: 0 12px;
    font-size: 12px;
  }

  h1.bd-title {
    font-size: clamp(15px, 4.5vw, 18px);
    word-wrap: break-word;
  }

  .generator-controls,
  .explore-toolbar {
    grid-template-columns: 1fr;
    min-width: 0;
  }

  .generator-controls {
    align-items: stretch;
  }

  .harmony-modes {
    height: auto;
  }

  #generateBtn {
    width: 100%;
    justify-content: center;
  }

  .palette-intro h2 {
    font-size: 21px;
  }

  .palette-section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .tool-page-intro h2 {
    font-size: 21px;
  }

  .harmony-modes {
    justify-content: flex-start;
    width: 100%;
    min-width: 0;
  }

  .palette-stage {
    flex-direction: column;
    height: auto;
    min-height: 0;
    gap: 10px;
  }

  .swatch {
    flex: 0 0 auto;
    min-height: 68px;
    width: 100%;
  }

  .hex-chip-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .hex-chip {
    height: auto;
    min-height: 40px;
    padding: 6px 8px;
    font-size: 11px;
    word-break: break-all;
  }

  .palette-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .export-actions {
    width: 100%;
    gap: 8px;
  }

  .export-actions .bd-btn {
    flex: 1 1 calc(50% - 4px);
    min-height: 40px;
    justify-content: center;
  }

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

  .preview-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .preview-top > div:last-child {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

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

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

  .preview-bar-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-auto-flow: dense;
    row-gap: 4px;
    column-gap: 8px;
  }

  .preview-bar-row label {
    grid-column: 1 / -1;
  }

  .preview-bar-track {
    grid-column: 1;
  }

  .preview-bar-row span {
    grid-column: 2;
    align-self: center;
    white-space: nowrap;
  }

  .preview-navbar .preview-brand {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 70vw;
  }

  .bd-kbd-hint {
    flex-wrap: wrap;
  }

  #dashboardPreview {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 480px) {
  #dashboardPreview .preview-dashboard {
    font-size: 11px;
  }

  .export-actions .bd-btn {
    flex: 1 1 100%;
  }

  .upload-dropzone {
    min-height: 140px;
    padding: 16px;
    font-size: 13px;
  }
}

.generator-controls,
.explore-toolbar,
.palette-section-heading,
.palette-actions,
.preview-shell,
.preview-top,
.preview-dashboard {
  min-width: 0;
}

@media (max-width: 600px) {
  .palette-intro,
  .tool-page-intro {
    margin-bottom: 20px;
  }

  .palette-intro h2,
  .tool-page-intro h2 {
    overflow-wrap: anywhere;
  }

  .palette-stage {
    gap: 8px;
  }

  .swatch {
    min-height: 88px;
    border-radius: var(--bd-radius-lg);
  }

  .swatch-overlay {
    padding: 8px 10px;
  }

  .swatch-icon-btn {
    width: 30px;
    height: 30px;
  }

  .preview-shell {
    margin-top: 28px;
  }

  #dashboardPreview {
    padding: 12px;
  }

  .preview-body {
    padding: 10px;
  }
}