/**
 * Color Converter Page Styles
 * 색상 변환기 도구 전용 스타일 - Modern Color Picker UI
 */

/* ========================================
   메인 레이아웃
   ======================================== */

.color-picker-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

@media (max-width: 768px) {
    .color-picker-main {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   SV 피커 (채도-명도)
   ======================================== */

.sv-picker-container {
    position: relative;
}

.sv-picker {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    cursor: crosshair;
    overflow: hidden;
    border: 1px solid var(--border);
}

.sv-picker-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, #fff, hsl(var(--picker-hue), 100%, 50%));
}

.sv-picker-gradient::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, #000, transparent);
}

.sv-picker-cursor {
    position: absolute;
    width: 18px;
    height: 18px;
    border: 2px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 0 1px rgba(0,0,0,0.3), inset 0 0 0 1px rgba(0,0,0,0.2);
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 2;
}

/* ========================================
   Hue 슬라이더
   ======================================== */

.hue-slider-container {
    margin-top: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.hue-slider {
    flex: 1;
    height: 16px;
    border-radius: 8px;
    background: linear-gradient(to right, 
        hsl(0, 100%, 50%), 
        hsl(60, 100%, 50%), 
        hsl(120, 100%, 50%), 
        hsl(180, 100%, 50%), 
        hsl(240, 100%, 50%), 
        hsl(300, 100%, 50%), 
        hsl(360, 100%, 50%)
    );
    position: relative;
    cursor: pointer;
    border: 1px solid var(--border);
}

.hue-slider-thumb {
    position: absolute;
    top: 50%;
    width: 10px;
    height: 20px;
    background: #fff;
    border: 1px solid rgba(0,0,0,0.2);
    border-radius: 3px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.color-preview-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--border);
    flex-shrink: 0;
    box-shadow: inset 0 0 0 2px #fff;
}

/* ========================================
   RGB 슬라이더
   ======================================== */

.rgb-sliders {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.rgb-slider-group {
    flex: 1;
    text-align: center;
}

.rgb-slider-input {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    border: 1px solid var(--border);
}

.rgb-slider-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid currentColor;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    cursor: pointer;
}

.rgb-slider-input.r-slider {
    background: linear-gradient(to right, rgb(0, var(--g), var(--b)), rgb(255, var(--g), var(--b)));
    color: #ef4444;
}

.rgb-slider-input.g-slider {
    background: linear-gradient(to right, rgb(var(--r), 0, var(--b)), rgb(var(--r), 255, var(--b)));
    color: #22c55e;
}

.rgb-slider-input.b-slider {
    background: linear-gradient(to right, rgb(var(--r), var(--g), 0), rgb(var(--r), var(--g), 255));
    color: #3b82f6;
}

.rgb-value-input {
    width: 100%;
    padding: 6px;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    margin-top: 4px;
}

.rgb-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ========================================
   값 출력 영역
   ======================================== */

.color-values {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.color-value-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.color-value-label {
    width: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
}

.color-value-input {
    flex: 1;
    padding: 10px 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.color-value-input:focus {
    outline: none;
    border-color: var(--accent);
}

/* ========================================
   퀵 팔레트 (바둑판 그리드)
   ======================================== */

.quick-palette {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border);
}

.quick-palette-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    gap: 6px;
}

.quick-palette-grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 4px;
}

.quick-palette-swatch {
    aspect-ratio: 1;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
}

.quick-palette-swatch:hover {
    transform: scale(1.15);
    z-index: 1;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.quick-palette-swatch.active {
    border: 2px solid var(--text-primary);
}

/* ========================================
   섹션 구분
   ======================================== */

.palette-section {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border);
}

.palette-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
    display: flex;
    align-items: center;
    gap: 8px;
}

.palette-title-badge {
    font-size: 11px;
    font-weight: 400;
    color: var(--text-muted);
}

/* ========================================
   명도 변화 행
   ======================================== */

.shade-row {
    display: flex;
    gap: 4px;
}

.shade-swatch {
    flex: 1;
    height: 36px;
    cursor: pointer;
    transition: all 0.15s ease;
    border: 1px solid transparent;
}

.shade-swatch:first-child {
    border-radius: var(--radius) 0 0 var(--radius);
}

.shade-swatch:last-child {
    border-radius: 0 var(--radius) var(--radius) 0;
}

.shade-swatch:hover {
    transform: scaleY(1.15);
    z-index: 1;
}

.shade-swatch.active {
    border: 2px solid var(--text-primary);
}

/* ========================================
   색상 조화 그리드
   ======================================== */

.harmony-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

@media (max-width: 640px) {
    .harmony-grid {
        grid-template-columns: 1fr;
    }
}

.harmony-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
}

.harmony-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.palette-row {
    display: flex;
    gap: 8px;
}

.palette-swatch {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
    border: 1px solid var(--border);
}

.palette-swatch:hover {
    transform: scale(1.1);
    z-index: 1;
    box-shadow: var(--shadow-lg);
}

.palette-swatch.active {
    border: 2px solid var(--accent);
}

/* ========================================
   Tailwind 결과
   ======================================== */

.tailwind-result {
    background: var(--accent-light);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-top: var(--space-4);
}

.tailwind-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: var(--space-2);
}

.tailwind-palette {
    display: flex;
    gap: 4px;
}

.tailwind-swatch {
    flex: 1;
    height: 28px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.tailwind-swatch:first-child {
    border-radius: var(--radius) 0 0 var(--radius);
}

.tailwind-swatch:last-child {
    border-radius: 0 var(--radius) var(--radius) 0;
}

.tailwind-swatch:hover {
    transform: scaleY(1.3);
}

.tailwind-swatch.active {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

/* ========================================
   Eyedropper 버튼
   ======================================== */

.eyedropper-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.15s ease;
}

.eyedropper-btn:hover {
    background: var(--bg-tertiary);
    color: var(--accent);
}