/*
 * Advanced Color Converter - Refactored Styles
 */

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

.color-converter-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
}

.color-controls-panel,
.color-info-panel {
    background-color: var(--color-background-secondary);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

/* --- Left Panel: Controls --- */
.color-picker-area {
    margin-bottom: 1.5rem;
}

.color-swatch {
    width: 100%;
    height: 200px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: box-shadow 0.2s;
}

.color-swatch:hover, .color-swatch:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.hex-group {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    gap: 0.75rem;
    align-items: center;
    margin-bottom: 1.5rem;
}
.hex-group label {
    font-weight: 600;
}
.hex-group input {
    font-family: var(--font-family-mono);
    font-size: 1rem;
}

.slider-group {
    display: grid;
    gap: 1rem;
    border-top: 1px solid var(--color-border);
    padding-top: 1.5rem;
    margin-top: 1.5rem;
}

.slider-control {
    display: grid;
    grid-template-columns: 20px 1fr 55px;
    align-items: center;
    gap: 0.75rem;
}

.slider-control label {
    font-size: 0.875rem;
    font-weight: 500;
}

.slider-control input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--color-background-tertiary);
    border-radius: 3px;
    outline: none;
}

.slider-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--color-primary);
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid var(--color-background-secondary);
}

.slider-control input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--color-primary);
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid var(--color-background-secondary);
}

.slider-input {
    width: 100%;
    padding: 0.3rem;
    text-align: center;
    border: 1px solid var(--color-border);
    background-color: var(--color-background-primary);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-primary);
    -moz-appearance: textfield;
}
.slider-input::-webkit-outer-spin-button,
.slider-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}


/* --- Right Panel: Info --- */
.info-section {
    margin-bottom: 1.5rem;
}
.info-section:last-child {
    margin-bottom: 0;
}
.info-header {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.output-group {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}
.output-group label {
    font-weight: 600;
}
.output-group input {
    background-color: var(--color-background-tertiary);
    font-family: var(--font-family-mono);
}

.contrast-results {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.contrast-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem;
    background-color: var(--color-background-tertiary);
    border-radius: var(--border-radius-md);
}
.contrast-item span {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}
.contrast-item strong {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0.25rem 0;
}
.rating-badge {
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: var(--border-radius-sm);
    color: #fff;
}
.rating-badge.fail { background-color: #e53e3e; }
.rating-badge.pass { background-color: #38a169; }

.palette-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.palette-container {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.5rem;
    margin-top: 1rem;
}
.palette-swatch {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: transform 0.2s;
}
.palette-swatch:hover {
    transform: scale(1.05);
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .color-converter-grid {
        grid-template-columns: 1fr;
    }
}