/* 色彩工具專用樣式 */

/* 工具導航 */
.tool-nav {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0;
    padding: 0.5rem;
    background: #f8f9fa;
    border-radius: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: #666;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-btn:hover {
    background: rgba(247, 147, 26, 0.1);
    color: #F7931A;
    transform: translateY(-1px);
}

.nav-btn.active {
    background: linear-gradient(135deg, #F7931A, #627EEA);
    color: white;
    box-shadow: 0 4px 15px rgba(247, 147, 26, 0.3);
    transform: translateY(-2px);
}

.nav-btn.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    pointer-events: none;
}

/* 工具容器佈局 */
.tool-container {
    margin: 2rem 0;
}

/* 工具面板樣式 */
.tool-panel {
    background: #ffffff;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

.tool-panel.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.tool-panel:hover {
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
}

.tool-panel h3 {
    color: #F7931A;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tool-panel h3::before {
    content: '';
    width: 4px;
    height: 20px;
    background: linear-gradient(135deg, #F7931A, #627EEA);
    border-radius: 2px;
}

/* 現代化輸入組樣式 */
.input-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: #333;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: #F7931A;
    box-shadow: 0 0 0 4px rgba(247, 147, 26, 0.1), 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

/* 格式化輸入框特殊樣式 */
.format-input {
    font-family: 'Courier New', monospace;
    font-weight: 500;
    background: linear-gradient(135deg, #fafafa, #ffffff);
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.format-input:focus {
    border-color: #F7931A;
    box-shadow: 0 0 0 4px rgba(247, 147, 26, 0.1), 0 4px 12px rgba(0, 0, 0, 0.1);
    background: #ffffff;
    transform: translateY(-1px);
}

.format-input::placeholder {
    color: #999;
    font-style: italic;
}

/* 色彩選擇器組合樣式 */
.color-input {
    display: flex;
    gap: 1rem;
    align-items: center;
    background: #ffffff;
    padding: 0.75rem;
    border-radius: 12px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.color-input:hover {
    border-color: #F7931A;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.color-input input[type="color"] {
    width: 60px;
    height: 60px;
    border: 3px solid #ffffff;
    border-radius: 50%;
    cursor: pointer;
    padding: 0;
    background: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.color-input input[type="color"]:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.color-input input[type="text"] {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    padding: 0.5rem;
}

.color-input input[type="text"]:focus {
    outline: none;
    background: rgba(247, 147, 26, 0.05);
    border-radius: 8px;
}

/* 色彩選擇器容器 */
.color-picker-container {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-radius: 16px;
    border: 1px solid #e9ecef;
}

.color-picker {
    width: 80px;
    height: 80px;
    border: 4px solid #ffffff;
    border-radius: 50%;
    cursor: pointer;
    padding: 0;
    background: none;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.color-picker:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.2);
}

/* 現代化按鈕樣式 */
.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #F7931A, #627EEA);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(247, 147, 26, 0.4);
    background: linear-gradient(135deg, #ff9f1a, #7b8eef);
}

.btn-secondary {
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    color: #333;
    border: 2px solid #e9ecef;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #e9ecef, #f1f3f4);
    border-color: #F7931A;
    color: #F7931A;
    transform: translateY(-2px);
}

/* 複製按鈕特殊樣式 */
.copy-btn {
    padding: 0.5rem;
    min-width: 40px;
    border-radius: 8px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: #F7931A;
    color: white;
    transform: scale(1.1);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-full {
    width: 100%;
}

/* 格式組樣式 */
.format-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: #ffffff;
    border-radius: 12px;
    border: 2px solid #f1f3f4;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.format-group:hover {
    border-color: #F7931A;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.format-group label {
    font-weight: 700;
    color: #333;
    min-width: 60px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.format-display {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: #627EEA;
    background: #f8f9fa;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    min-width: 150px;
    text-align: center;
}

/* RGB, HSL, HSV, CMYK 輸入組 */
.rgb-inputs, .hsl-inputs, .hsv-inputs, .cmyk-inputs {
    display: flex;
    gap: 0.5rem;
    flex: 1;
}

.rgb-input, .hsl-input, .hsv-input, .cmyk-input {
    width: 70px !important;
    text-align: center;
    font-weight: 600;
    padding: 0.75rem 0.5rem !important;
}

/* 結果顯示區域 */
.result-container, .conversion-results {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-radius: 16px;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    background: white;
    border-radius: 6px;
    border: 1px solid #e9ecef;
}

.result-item:last-child {
    margin-bottom: 0;
}

.result-label {
    font-weight: 600;
    color: #333;
}

.result-value {
    font-family: 'Courier New', monospace;
    color: #627EEA;
    font-weight: 500;
}

/* 色彩預覽 */
.color-preview {
    width: 100%;
    height: 120px;
    border-radius: 16px;
    border: 4px solid #ffffff;
    margin: 1.5rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.color-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.color-preview:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.color-preview:hover::before {
    opacity: 1;
}

/* 色彩顯示容器 */
.color-display {
    text-align: center;
    margin: 2rem 0;
}

.color-info {
    margin-top: 1rem;
}

.color-info h4 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.color-info p {
    color: #666;
    font-size: 1rem;
}

/* 色彩輸入區塊 */
.color-input-section {
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    padding: 2rem;
    border-radius: 16px;
    margin: 2rem 0;
    border: 1px solid #e9ecef;
}

/* 調色盤網格 */
.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
    gap: 0.5rem;
    margin: 1rem 0;
}

.palette-color {
    aspect-ratio: 1;
    border-radius: 8px;
    border: 2px solid #e9ecef;
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.palette-color:hover {
    transform: scale(1.1);
    z-index: 1;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.palette-color::after {
    content: attr(data-color);
    position: absolute;
    bottom: -25px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
    white-space: nowrap;
}

.palette-color:hover::after {
    opacity: 1;
}

/* 對比度檢查結果 */
.contrast-result {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.contrast-sample {
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    border: 2px solid #e9ecef;
}

.contrast-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.contrast-metric {
    text-align: center;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.contrast-metric .metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #F7931A;
    display: block;
}

.contrast-metric .metric-label {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.5rem;
}

.contrast-status {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

.contrast-status.pass {
    background: #d4edda;
    color: #155724;
}

.contrast-status.fail {
    background: #f8d7da;
    color: #721c24;
}

/* 色彩和諧建議 */
.harmony-suggestions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.harmony-type {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    text-align: center;
}

.harmony-type h4 {
    color: #F7931A;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.harmony-colors {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.5rem;
    justify-content: center;
}

.harmony-colors .color-sample {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid #e9ecef;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.harmony-colors .color-sample:hover {
    transform: scale(1.2);
}

/* 響應式設計 */
@media (max-width: 768px) {
    .tool-nav {
        flex-wrap: wrap;
        gap: 0.25rem;
        padding: 0.75rem;
    }
    
    .nav-btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
        flex: 1;
        min-width: calc(50% - 0.125rem);
    }
    
    .tool-panel {
        padding: 1.5rem;
        margin: 1rem 0;
    }
    
    .color-picker-container {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    .color-input {
        flex-direction: column;
        align-items: center;
        padding: 1rem;
    }
    
    .color-input input[type="color"] {
        width: 80px;
        height: 80px;
    }
    
    .palette-grid {
        grid-template-columns: repeat(auto-fit, minmax(50px, 1fr));
    }
    
    .contrast-info {
        grid-template-columns: 1fr;
    }
    
    .harmony-suggestions {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .format-input {
        font-size: 0.9rem;
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 480px) {
    .tool-panel h3 {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
    
    .palette-grid {
        grid-template-columns: repeat(auto-fit, minmax(40px, 1fr));
    }
    
    .harmony-colors .color-sample {
        width: 25px;
        height: 25px;
    }
}

/* 載入動畫 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #F7931A;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 工具提示 */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: 5px;
}

.tooltip:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
}

/* 複製成功提示 */
.copy-success {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #28a745;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    z-index: 10000;
    animation: copySuccess 2s ease forwards;
}

@keyframes copySuccess {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
    20% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    80% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
}

/* 錯誤提示 */
.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid #f5c6cb;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.error-message::before {
    content: '⚠️ ';
    margin-right: 0.5rem;
}

/* 成功提示 */
.success-message {
    background: #d4edda;
    color: #155724;
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid #c3e6cb;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.success-message::before {
    content: '✅ ';
    margin-right: 0.5rem;
}

/* 隱藏類別 */
.hidden {
    display: none !important;
}

/* 淡入動畫 */
.fade-in {
    animation: fadeIn 0.3s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}