:root {
  --swatch-accent: #d2a14b;
  --swatch-accent-strong: #f0c46a;
  --swatch-surface: linear-gradient(180deg, rgba(18, 18, 18, 0.96), rgba(9, 9, 9, 0.99));
  --swatch-border: rgba(255, 255, 255, 0.08);
  --swatch-border-strong: rgba(255, 255, 255, 0.16);
  --swatch-text: #f4f4f4;
  --swatch-muted: rgba(255, 255, 255, 0.66);
  --swatch-muted-soft: rgba(255, 255, 255, 0.42);
  --swatch-shadow: 0 26px 70px rgba(0, 0, 0, 0.34);
  --swatch-radius: 24px;
}

.swatch-page {
  padding-top: 28px;
  padding-bottom: 42px;
}

.swatch-hero {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 0 24px;
}

.swatch-hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 4.3rem);
  line-height: 0.94;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.swatch-intro {
  max-width: 720px;
  margin: 16px 0 0;
  color: var(--swatch-muted);
  font-size: 1rem;
}

.workspace-grid,
.workspace-main,
.workspace-side {
  display: grid;
  gap: 18px;
}

.workspace-grid {
  grid-template-columns: 1fr;
  align-items: start;
}

.app-panel {
  border: 1px solid var(--swatch-border);
  border-radius: var(--swatch-radius);
  background: var(--swatch-surface);
  box-shadow: var(--swatch-shadow);
  padding: 24px;
}

.panel-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.panel-heading-row-tight {
  margin-bottom: 12px;
}

.panel-heading-row h2,
.panel-heading-row h3,
.mini-heading {
  margin: 0;
  color: var(--swatch-text);
  line-height: 1.08;
}

.panel-heading-row h2 {
  font-size: 1.45rem;
}

.panel-heading-row h3,
.mini-heading {
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-note {
  max-width: 360px;
  margin: 0;
  color: var(--swatch-muted);
  font-size: 0.92rem;
}

.controls,
.custom-inputs {
  display: grid;
  gap: 14px;
}

.controls {
  grid-template-columns: minmax(0, 1.4fr) minmax(220px, 1fr) minmax(160px, auto);
}

.control-group,
.custom-input-group {
  display: grid;
  gap: 8px;
}

.control-group label,
.custom-input-group label {
  color: var(--swatch-muted);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.color-input-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

#baseColor {
  width: 64px;
  height: 48px;
  padding: 0;
  border: 1px solid var(--swatch-border);
  border-radius: 14px;
  background: #101010;
  cursor: pointer;
}

.hex-input,
select,
.custom-input,
input[type="text"],
input[type="number"],
textarea {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--swatch-border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--swatch-text);
  font: inherit;
}

input::placeholder,
textarea::placeholder {
  color: var(--swatch-muted-soft);
}

select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 42px;
  background-image: linear-gradient(45deg, transparent 50%, rgba(255, 255, 255, 0.62) 50%), linear-gradient(135deg, rgba(255, 255, 255, 0.62) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 2px), calc(100% - 12px) calc(50% - 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  color-scheme: dark;
}

select option,
select optgroup {
  background: #0b0b0b;
  color: #f4f4f4;
}

select,
button,
#baseColor,
.swatch,
.extracted-color {
  transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.hex-input:focus,
select:focus,
.custom-input:focus,
input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus {
  outline: none;
  border-color: rgba(210, 161, 75, 0.48);
  box-shadow: 0 0 0 3px rgba(210, 161, 75, 0.12);
}

.tool-button,
.export-btn,
.extraction-btn,
.upload-btn,
.tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid var(--swatch-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--swatch-text);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
}

.tool-button:hover,
.export-btn:hover,
.extraction-btn:hover,
.upload-btn:hover,
.tab:hover {
  transform: translateY(-1px);
  border-color: var(--swatch-border-strong);
}

.tool-button-primary {
  background: #ffffff;
  color: #090909;
  border-color: #ffffff;
}

.control-group-action {
  align-self: end;
}

.custom-controls {
  display: none;
  margin-top: 18px;
  padding: 16px;
  border: 1px solid var(--swatch-border);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
}

.custom-controls.show {
  display: block;
}

.custom-controls .panel-heading-row {
  margin-bottom: 12px;
}

.custom-controls .panel-note {
  max-width: 280px;
  font-size: 0.84rem;
}

.custom-inputs {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.custom-swatch-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  align-items: end;
  padding: 10px;
  border: 1px solid var(--swatch-border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.custom-swatch-group h4 {
  grid-column: 1 / -1;
  margin: 0 0 2px;
  color: var(--swatch-text);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.custom-input-group label {
  color: var(--swatch-muted);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.custom-input {
  min-height: 34px;
  padding: 0 8px;
  font-size: 0.82rem;
}

.tabs {
  display: inline-flex;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--swatch-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
}

.tab {
  min-width: 132px;
  background: transparent;
  color: var(--swatch-muted);
}

.tab.active {
  background: #ffffff;
  color: #090909;
  border-color: #ffffff;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.swatches-grid {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(130px, 1fr);
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.swatches-grid::-webkit-scrollbar {
  height: 8px;
}

.swatches-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.16);
  border-radius: 999px;
}

.swatch {
  position: relative;
  min-height: 156px;
  border-radius: 20px;
  overflow: hidden;
  cursor: pointer;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.swatch:hover {
  transform: translateY(-3px);
}

.swatch-info {
  position: absolute;
  inset: auto 0 0 0;
  padding: 22px 12px 12px;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.84));
  color: #ffffff;
}

.swatch-label {
  margin-bottom: 6px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.swatch-hex {
  font-family: Consolas, monospace;
  font-size: 0.86rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.swatch-details {
  font-size: 0.68rem;
  line-height: 1.45;
  opacity: 0.88;
}

.color-info,
.extracted-wrap {
  border: 1px solid var(--swatch-border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.color-info {
  margin-top: 18px;
  padding: 16px;
}

.color-info strong {
  color: var(--swatch-text);
}

.harmony-info {
  margin-top: 10px;
  color: var(--swatch-muted);
}

.export-buttons,
.extraction-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.image-upload-area {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 28px 20px;
  border: 1px dashed rgba(210, 161, 75, 0.42);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
  text-align: center;
  cursor: pointer;
}

.image-upload-area:hover,
.image-upload-area.dragover {
  border-color: rgba(210, 161, 75, 0.72);
  background: rgba(255, 255, 255, 0.04);
}

.upload-icon {
  color: var(--swatch-accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.upload-text {
  color: var(--swatch-muted);
}

.file-input,
.canvas-hidden {
  display: none;
}

.image-preview-wrap {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.image-preview {
  width: min(100%, 240px);
  max-height: 240px;
  margin: 0 auto;
  border-radius: 18px;
  border: 1px solid var(--swatch-border);
  object-fit: cover;
}

.processing-indicator {
  display: none;
  margin-top: 14px;
  padding: 14px 16px;
  border: 1px solid rgba(210, 161, 75, 0.18);
  border-radius: 16px;
  background: rgba(210, 161, 75, 0.08);
  color: var(--swatch-accent-strong);
  font-weight: 700;
}

.processing-indicator.show {
  display: block;
}

.extracted-wrap {
  margin-top: 18px;
  padding: 16px;
}

.extracted-colors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
  gap: 10px;
}

.extracted-color {
  position: relative;
  min-height: 72px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
}

.extracted-color:hover {
  transform: translateY(-2px);
}

.extracted-color-label {
  position: absolute;
  inset: auto 0 0 0;
  padding: 6px 4px;
  background: rgba(0, 0, 0, 0.72);
  color: #ffffff;
  text-align: center;
  font-size: 0.66rem;
  font-family: Consolas, monospace;
}

.notification {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  padding: 12px 16px;
  border: 1px solid var(--swatch-border-strong);
  border-radius: 14px;
  background: rgba(12, 12, 12, 0.96);
  color: var(--swatch-text);
  box-shadow: var(--swatch-shadow);
  transform: translateY(16px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.notification.show {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 980px) {
  .controls,
  .custom-inputs,
  .swatch-hero,
  .panel-heading-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .swatch-hero {
    align-items: start;
  }

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

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

@media (max-width: 720px) {
  .swatch-page {
    padding-top: 18px;
  }

  .swatch-hero {
    gap: 14px;
    padding-bottom: 18px;
  }

  .app-panel {
    padding: 18px;
  }

  .swatches-grid {
    grid-auto-columns: minmax(112px, 1fr);
  }

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

  .export-buttons,
  .extraction-controls {
    flex-direction: column;
  }

  .tool-button,
  .export-btn,
  .extraction-btn,
  .upload-btn,
  .tab {
    width: 100%;
  }
}