/**
 * HR Tools Frontend Styles - Modern & SEO Optimized
 * 人力资源工具箱前台样式 - 现代化SEO优化版本
 */

:root {
    --hr-primary: #2563eb;
    --hr-primary-dark: #1d4ed8;
    --hr-primary-light: #3b82f6;
    --hr-success: #10b981;
    --hr-warning: #f59e0b;
    --hr-danger: #ef4444;
    --hr-info: #3b82f6;
    --hr-purple: #8b5cf6;
    
    --hr-gray-50: #f9fafb;
    --hr-gray-100: #f3f4f6;
    --hr-gray-200: #e5e7eb;
    --hr-gray-300: #d1d5db;
    --hr-gray-400: #9ca3af;
    --hr-gray-500: #6b7280;
    --hr-gray-600: #4b5563;
    --hr-gray-700: #374151;
    --hr-gray-800: #1f2937;
    --hr-gray-900: #111827;
    
    --hr-border-radius: 12px;
    --hr-border-radius-lg: 16px;
    --hr-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --hr-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --hr-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --hr-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --hr-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --hr-font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
    --hr-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== Article Footer Tools Navigation ========== */
.hr-tools-nav-container {
    margin: 48px 0;
    padding: 32px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: var(--hr-border-radius-lg);
    border: 1px solid var(--hr-gray-200);
    font-family: var(--hr-font-sans);
    position: relative;
    overflow: hidden;
}

.hr-tools-nav-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--hr-primary) 0%, var(--hr-purple) 50%, var(--hr-info) 100%);
}

.hr-tools-nav-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--hr-gray-200);
}

.hr-tools-nav-header .hr-tools-nav-icon {
    font-size: 32px;
}

.hr-tools-nav-header h4 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    color: var(--hr-gray-900);
}

.hr-tools-nav-subtitle {
    font-size: 14px;
    color: var(--hr-gray-500);
    margin-top: 4px;
}

.hr-tools-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.hr-tools-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 12px;
    background: white;
    border: 1px solid var(--hr-gray-200);
    border-radius: var(--hr-border-radius);
    text-decoration: none;
    transition: var(--hr-transition);
    text-align: center;
}

.hr-tools-nav-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--hr-shadow-lg);
    border-color: var(--hr-primary);
    background: linear-gradient(135deg, var(--hr-primary) 0%, var(--hr-primary-dark) 100%);
    color: white;
    text-decoration: none;
}

.hr-tools-nav-item:hover .hr-tools-nav-icon-item,
.hr-tools-nav-item:hover .hr-tools-nav-label {
    color: white;
}

.hr-tools-nav-icon-item {
    font-size: 32px;
    margin-bottom: 10px;
    transition: var(--hr-transition);
}

.hr-tools-nav-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--hr-gray-700);
    transition: var(--hr-transition);
    line-height: 1.3;
}

.hr-tools-nav-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--hr-gray-200);
}

.hr-tools-nav-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--hr-primary) 0%, var(--hr-primary-dark) 100%);
    color: white;
    text-decoration: none;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--hr-transition);
}

.hr-tools-nav-more:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    color: white;
    text-decoration: none;
}

/* ========== Tool Container ========== */
.hr-tool-container {
    max-width: 850px;
    margin: 0 auto;
    padding: 32px;
    background: white;
    border-radius: var(--hr-border-radius-lg);
    box-shadow: var(--hr-shadow-md);
    font-family: var(--hr-font-sans);
    border: 1px solid var(--hr-gray-200);
}

.hr-tool-description {
    padding: 20px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-left: 4px solid var(--hr-info);
    border-radius: 8px;
    margin-bottom: 28px;
}

.hr-tool-description p {
    margin: 0;
    color: var(--hr-gray-700);
    font-size: 15px;
    line-height: 1.7;
}

/* ========== Form Styles ========== */
.hr-tool-form {
    margin-bottom: 28px;
}

.hr-form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
}

.hr-form-group {
    flex: 1;
    min-width: 220px;
}

.hr-form-group-full {
    margin-bottom: 20px;
}

.hr-form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--hr-gray-700);
}

.hr-form-group input[type="number"],
.hr-form-group input[type="text"],
.hr-form-group input[type="date"],
.hr-form-group input[type="month"],
.hr-form-group select {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 2px solid var(--hr-gray-200);
    border-radius: 8px;
    transition: var(--hr-transition);
    background: white;
}

.hr-form-group input:focus,
.hr-form-group select:focus {
    outline: none;
    border-color: var(--hr-primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.hr-form-group input::placeholder {
    color: var(--hr-gray-400);
}

.hr-radio-group {
    display: flex;
    gap: 24px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.hr-radio-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    cursor: pointer;
    font-size: 14px;
    color: var(--hr-gray-700);
}

.hr-radio-group input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--hr-primary);
}

/* ========== Calculate Button ========== */
.hr-tool-calculate-btn {
    display: block;
    width: 100%;
    max-width: 320px;
    margin: 28px auto 0;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--hr-primary) 0%, var(--hr-primary-dark) 100%);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--hr-transition);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.hr-tool-calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.hr-tool-calculate-btn:active {
    transform: translateY(0);
}

/* ========== Results Section ========== */
.hr-tool-result {
    margin-top: 36px;
    padding: 28px;
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
    border-radius: var(--hr-border-radius);
    border: 1px solid var(--hr-gray-200);
}

.hr-tool-result h4 {
    margin: 0 0 24px;
    font-size: 20px;
    font-weight: 700;
    color: var(--hr-gray-900);
    padding-bottom: 16px;
    border-bottom: 2px solid var(--hr-gray-200);
    display: flex;
    align-items: center;
    gap: 8px;
}

.hr-result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
}

.hr-result-item {
    padding: 20px;
    background: white;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--hr-gray-200);
    transition: var(--hr-transition);
}

.hr-result-item:hover {
    border-color: var(--hr-primary);
    box-shadow: var(--hr-shadow-sm);
}

.hr-result-item.highlight {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border-color: var(--hr-success);
}

.hr-result-item.highlight:hover {
    border-color: var(--hr-success);
}

.hr-result-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--hr-gray-500);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hr-result-value {
    display: block;
    font-size: 22px;
    font-weight: 700;
    color: var(--hr-gray-900);
}

.hr-result-item.highlight .hr-result-value {
    color: var(--hr-success);
}

/* ========== Alert Boxes ========== */
.hr-alert-warning,
.hr-alert-info,
.hr-alert-success,
.hr-alert-danger {
    padding: 18px 20px;
    border-radius: 10px;
    margin-top: 24px;
    font-size: 15px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.hr-alert-warning {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border: 1px solid var(--hr-warning);
    color: #92400e;
}

.hr-alert-info {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border: 1px solid var(--hr-info);
    color: #1e40af;
}

.hr-alert-success {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border: 1px solid var(--hr-success);
    color: #065f46;
}

.hr-alert-danger {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 1px solid var(--hr-danger);
    color: #991b1b;
}

/* ========== Tips Sections ========== */
.hr-leave-tips,
.hr-tax-brackets,
.hr-comp-tips,
.hr-ot-tips,
.hr-sev-tips,
.hr-con-tips,
.hr-wy-tips,
.hr-ps-tips,
.hr-prob-tips {
    margin-top: 28px;
    padding: 24px;
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border-radius: var(--hr-border-radius);
    border: 1px solid #fcd34d;
}

.hr-leave-tips h5,
.hr-tax-brackets h5,
.hr-comp-tips h5,
.hr-ot-tips h5,
.hr-sev-tips h5,
.hr-con-tips h5,
.hr-wy-tips h5,
.hr-ps-tips h5,
.hr-prob-tips h5 {
    margin: 0 0 14px;
    font-size: 15px;
    font-weight: 700;
    color: #92400e;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hr-leave-tips ul,
.hr-comp-tips ul,
.hr-ot-tips ul,
.hr-sev-tips ul,
.hr-con-tips ul,
.hr-wy-tips ul,
.hr-ps-tips ul,
.hr-prob-tips ul {
    margin: 0;
    padding-left: 24px;
    font-size: 14px;
    color: #78350f;
    line-height: 1.9;
}

.hr-tax-brackets table,
.hr-wy-tips table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin-top: 12px;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.hr-tax-brackets th,
.hr-tax-brackets td,
.hr-wy-tips th,
.hr-wy-tips td {
    padding: 12px 16px;
    border-bottom: 1px solid #fcd34d;
    text-align: left;
}

.hr-tax-brackets th,
.hr-wy-tips th {
    background: #fef3c7;
    font-weight: 700;
    color: #92400e;
}

.hr-tax-brackets td,
.hr-wy-tips td {
    color: #78350f;
}

.hr-tax-brackets tr:last-child td,
.hr-wy-tips tr:last-child td {
    border-bottom: none;
}

/* ========== Recommendation Box ========== */
.hr-recommendation {
    margin-top: 28px;
    padding: 24px;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: var(--hr-border-radius);
    border: 2px solid var(--hr-success);
}

.hr-recommendation h5 {
    margin: 0 0 14px;
    font-size: 16px;
    font-weight: 700;
    color: #166534;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hr-recommendation p {
    margin: 0;
    font-size: 15px;
    color: #15803d;
    line-height: 1.7;
}

.hr-recommendation strong {
    color: #166534;
}

/* ========== Responsive Design ========== */
@media (max-width: 768px) {
    .hr-tools-nav-container {
        padding: 20px;
        margin: 32px 0;
    }
    
    .hr-tools-nav-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    
    .hr-tools-nav-item {
        padding: 14px 8px;
    }
    
    .hr-tools-nav-icon-item {
        font-size: 26px;
    }
    
    .hr-tools-nav-label {
        font-size: 11px;
    }
    
    .hr-tool-container {
        padding: 20px;
    }
    
    .hr-form-row {
        flex-direction: column;
        gap: 16px;
    }
    
    .hr-form-group {
        min-width: 100%;
    }
    
    .hr-result-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hr-tool-calculate-btn {
        max-width: 100%;
    }
    
    .hr-tools-nav-header h4 {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .hr-tools-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hr-result-grid {
        grid-template-columns: 1fr;
    }
    
    .hr-radio-group {
        flex-direction: column;
        gap: 12px;
    }
}

/* ========== Accessibility ========== */
@media (prefers-reduced-motion: reduce) {
    .hr-tools-nav-item,
    .hr-tool-calculate-btn,
    .hr-result-item,
    .hr-form-group input,
    .hr-form-group select {
        transition: none;
    }
}

/* Focus States */
.hr-form-group input:focus-visible,
.hr-form-group select:focus-visible,
.hr-tool-calculate-btn:focus-visible {
    outline: 2px solid var(--hr-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .hr-tools-nav-container {
        box-shadow: none;
        border: 2px solid #000;
    }
    
    .hr-tools-nav-more {
        display: none;
    }
    
    .hr-tool-container {
        box-shadow: none;
        border: 2px solid #000;
    }
    
    .hr-tool-calculate-btn {
        display: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .hr-tools-nav-container {
        background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
        border-color: #374151;
    }
    
    .hr-tools-nav-header {
        border-bottom-color: #374151;
    }
    
    .hr-tools-nav-header h4 {
        color: #f9fafb;
    }
    
    .hr-tools-nav-label {
        color: #d1d5db;
    }
    
    .hr-tools-nav-item {
        background: #1f2937;
        border-color: #374151;
    }
    
    .hr-tools-nav-item:hover {
        background: var(--hr-primary);
        border-color: var(--hr-primary);
    }
}