.settings-layout {
    display: flex;
    flex-direction: column;
    gap: var(--sp-5);
    max-width: 640px;
    margin: 0 auto;
}

.settings-section {
    padding: var(--sp-6);
    background: var(--bg-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    transition: background var(--t-base), border-color var(--t-base), transform var(--t-base), box-shadow var(--t-base);
}

.settings-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-fill), transparent);
    opacity: 0.5;
}

.settings-section:hover {
    background: var(--bg-surface-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.settings-section.danger::before {
    background: linear-gradient(90deg, var(--danger), var(--danger-deep), transparent);
}

.settings-section-header {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    margin-bottom: var(--sp-4);
}

.settings-section-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-tint);
    color: var(--accent);
    font-size: 20px;
}

.settings-section.danger .settings-section-icon {
    background: var(--danger-light);
    color: var(--danger);
}

.settings-section-title {
    font-size: var(--fs-lg);
    font-weight: 700;
}

.settings-section-desc {
    font-size: var(--fs-sm);
    color: var(--text-muted);
    margin-top: 2px;
}

.settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-4);
    padding: var(--sp-3) 0;
    border-top: 1px solid var(--border);
}

.settings-row:first-of-type {
    border-top: none;
    padding-top: 0;
}

.settings-row-label {
    font-size: var(--fs-md);
    font-weight: 600;
}

.settings-row-desc {
    font-size: var(--fs-sm);
    color: var(--text-muted);
    margin-top: 2px;
}

.color-swatches {
    display: flex;
    gap: var(--sp-2);
}

.color-swatch {
    width: 28px;
    height: 28px;
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.color-swatch:hover {
    transform: scale(1.12);
}

.color-swatch.active {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--bg-base), 0 0 0 3px var(--text-primary);
}

.accent-custom {
    display: flex;
    gap: var(--sp-4);
    align-items: center;
}

.accent-wheel {
    width: 110px;
    height: 110px;
    flex-shrink: 0;
    border-radius: 50%;
    cursor: crosshair;
    background: conic-gradient(#ff0000, #ffff00, #00ff00, #00ffff, #0000ff, #ff00ff, #ff0000);
    mask: radial-gradient(circle, transparent 42%, #000000 43%);
    -webkit-mask: radial-gradient(circle, transparent 42%, #000000 43%);
    touch-action: none;
    transition: filter var(--t-fast);
}

.accent-wheel:hover {
    filter: brightness(1.1);
}

.accent-custom-side {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}

.accent-hex {
    width: 100px;
    font-family: var(--font-mono);
}

.segmented-control {
    display: inline-flex;
    padding: var(--sp-1);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.segmented-control button {
    padding: var(--sp-1) var(--sp-3);
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text-secondary);
    transition: background var(--t-fast), color var(--t-fast);
}

.segmented-control button:hover {
    color: var(--text-primary);
}

.segmented-control button.active {
    background: var(--accent);
    color: var(--text-on-accent);
}

body.density-compact .settings-row { padding: var(--sp-2) 0; }
body.density-compact .stat-card { padding: var(--sp-4); }
body.density-compact .dashboard-widget { padding: var(--sp-3); }