.tool-main-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  box-shadow: var(--shadow-base);

  --color-white: #fff;
  --visualizer-wrist-fill: rgba(255, 255, 255, 0.05);
  --visualizer-wrist-stroke: rgba(255, 255, 255, 0.15);
  --visualizer-outer-circle: rgba(255, 255, 255, 0.03);
  --visualizer-outer-stroke: rgba(255, 255, 255, 0.08);
  --visualizer-watch-face: rgba(25, 25, 35, 0.95);
  --visualizer-watch-inner: rgba(255, 255, 255, 0.08);
  --visualizer-watch-hands: rgba(255, 255, 255, 0.35);
  --visualizer-dim-line: rgba(255, 255, 255, 0.2);
  --visualizer-dim-text: rgba(255, 255, 255, 0.6);
  --color-fit-golden: #10b981;
  --color-fit-golden-bg: rgba(16, 185, 129, 0.1);
  --color-fit-golden-border: rgba(16, 185, 129, 0.25);
  --color-fit-bold: #3b82f6;
  --color-fit-bold-bg: rgba(59, 130, 246, 0.1);
  --color-fit-bold-border: rgba(59, 130, 246, 0.25);
  --color-fit-oversized: #ef4444;
  --color-fit-oversized-bg: rgba(239, 68, 68, 0.1);
  --color-fit-oversized-border: rgba(239, 68, 68, 0.25);
  --color-fit-vintage: #f59e0b;
  --color-fit-vintage-bg: rgba(245, 158, 11, 0.1);
  --color-fit-vintage-border: rgba(245, 158, 11, 0.25);
}

.theme-light .tool-main-card {
  --visualizer-wrist-fill: rgba(0, 0, 0, 0.04);
  --visualizer-wrist-stroke: rgba(0, 0, 0, 0.12);
  --visualizer-outer-circle: rgba(0, 0, 0, 0.02);
  --visualizer-outer-stroke: rgba(0, 0, 0, 0.06);
  --visualizer-watch-face: rgba(255, 255, 255, 0.95);
  --visualizer-watch-inner: rgba(0, 0, 0, 0.04);
  --visualizer-watch-hands: rgba(0, 0, 0, 0.6);
  --visualizer-dim-line: rgba(0, 0, 0, 0.25);
  --visualizer-dim-text: rgba(0, 0, 0, 0.75);
  --color-fit-golden: #047857;
  --color-fit-golden-bg: rgba(16, 185, 129, 0.08);
  --color-fit-golden-border: rgba(16, 185, 129, 0.2);
  --color-fit-bold: #1d4ed8;
  --color-fit-bold-bg: rgba(59, 130, 246, 0.08);
  --color-fit-bold-border: rgba(59, 130, 246, 0.2);
  --color-fit-oversized: #b91c1c;
  --color-fit-oversized-bg: rgba(239, 68, 68, 0.08);
  --color-fit-oversized-border: rgba(239, 68, 68, 0.2);
  --color-fit-vintage: #b45309;
  --color-fit-vintage-bg: rgba(245, 158, 11, 0.08);
  --color-fit-vintage-border: rgba(245, 158, 11, 0.2);
}

.wrist-calculator-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
}

@media (max-width: 992px) {
  .wrist-calculator-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.calc-panel {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.inputs-section,
.visualizer-section,
.results-section,
.recommendations-section {
  display: flex;
  flex-direction: column;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  margin-bottom: 0;
}

.results-wrapper {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-bottom: 1.25rem;
}

.section-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  color: var(--text-base);
}

.input-group {
  margin-bottom: 1.25rem;
}

.input-group:last-child {
  margin-bottom: 0;
}

.input-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.input-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.value-display {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(244, 63, 94, 0.08);
  padding: 0.15rem 0.45rem;
  border-radius: 0.3rem;
}

.slider-control {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border-color);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.slider-control::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: transform 0.1s ease;
}

.slider-control::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.toggle-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-control {
  width: 15px;
  height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
}

.toggle-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.unit-selector {
  display: flex;
  background: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-radius: 0.4rem;
  padding: 0.1rem;
}

.unit-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 0.25rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.unit-btn.active {
  background: var(--accent);
  color: var(--color-white);
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-muted);
  border-radius: 0.5rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.fit-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.metrics-summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 576px) {
  .metrics-summary-grid {
    grid-template-columns: 1fr;
  }
}

.metric-box {
  background: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.metric-val {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-base);
  margin-bottom: 0.2rem;
  letter-spacing: -0.010em;
}

.metric-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.verdict-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 99px;
  display: inline-block;
}

.verdict-golden {
  color: var(--color-fit-golden);
  background: var(--color-fit-golden-bg);
  border: 1px solid var(--color-fit-golden-border);
}

.verdict-bold {
  color: var(--color-fit-bold);
  background: var(--color-fit-bold-bg);
  border: 1px solid var(--color-fit-bold-border);
}

.verdict-oversized {
  color: var(--color-fit-oversized);
  background: var(--color-fit-oversized-bg);
  border: 1px solid var(--color-fit-oversized-border);
}

.verdict-vintage {
  color: var(--color-fit-vintage);
  background: var(--color-fit-vintage-bg);
  border: 1px solid var(--color-fit-vintage-border);
}

.coverage-safe {
  color: var(--color-fit-golden);
  background: var(--color-fit-golden-bg);
  border: 1px solid var(--color-fit-golden-border);
}

.coverage-bold {
  color: var(--color-fit-vintage);
  background: var(--color-fit-vintage-bg);
  border: 1px solid var(--color-fit-vintage-border);
}

.coverage-overhang {
  color: var(--color-fit-oversized);
  background: var(--color-fit-oversized-bg);
  border: 1px solid var(--color-fit-oversized-border);
}

.verdict-box {
  margin-top: 1rem;
  padding: 0.85rem;
  border-radius: 0.5rem;
  background: var(--bg-muted);
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--text-muted);
}

.verdict-box strong {
  color: var(--text-base);
}

.recommendations-table-wrapper {
  overflow-x: auto;
}

.recommendations-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.recommendations-table th {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.5rem 0.75rem;
  background: var(--bg-muted);
  border-bottom: 1px solid var(--border-color);
}

.recommendations-table td {
  font-size: 0.85rem;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.recommendations-table tr:last-child td {
  border-bottom: none;
}

.rec-value {
  font-weight: 700;
  color: var(--accent);
}

.rec-target {
  font-weight: 600;
  color: var(--text-base);
}