/* 现代化合同签署系统样式 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
    line-height: 1.6;
}

/* 合同说明部分 */
.contract-intro {
    background: white;
    border-radius: 20px;
    padding: 50px 40px;
    margin-bottom: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    animation: slideUp 0.6s ease-out;
}

.intro-header {
    text-align: center;
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 2px solid #f0f0f0;
}

.shield-icon {
    font-size: 80px;
    margin-bottom: 20px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.intro-header h1 {
    font-size: 36px;
    color: #1a1a1a;
    margin-bottom: 10px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.intro-subtitle {
    font-size: 18px;
    color: #666;
    font-weight: 400;
}

.intro-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.intro-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
    border-radius: 16px;
    border: 1px solid #e8ebff;
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out backwards;
}

.intro-item:nth-child(1) { animation-delay: 0.1s; }
.intro-item:nth-child(2) { animation-delay: 0.2s; }
.intro-item:nth-child(3) { animation-delay: 0.3s; }
.intro-item:nth-child(4) { animation-delay: 0.4s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.intro-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
    border-color: #667eea;
}

.item-icon {
    font-size: 40px;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.item-content h3 {
    font-size: 18px;
    color: #1a1a1a;
    margin-bottom: 10px;
    font-weight: 600;
}

.item-content p {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
    margin: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* 表单卡片 */
.form-card {
    background: white;
    border-radius: 20px;
    padding: 50px 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    max-width: 700px;
    margin: 0 auto;
    animation: slideUp 0.7s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1,
.header h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
    font-weight: 700;
}

.header h2 {
    font-size: 28px;
}

.header p {
    color: #666;
    font-size: 16px;
}

/* 表单样式 */
.contract-form {
    margin-top: 30px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

.label-icon {
    margin-right: 8px;
    font-size: 16px;
}

.required {
    color: #ef4444;
    margin-left: 4px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: #f9fafb;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #6366f1;
    background: white;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: #d1d5db;
    background: white;
}

/* 提交按钮 */
.submit-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 提示信息 */
.alert {
    padding: 14px 18px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: slideDown 0.3s ease-out;
}

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

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* 页脚信息 */
.footer-info {
    margin-top: 30px;
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #e5e7eb;
}

.footer-info p {
    color: #6b7280;
    font-size: 13px;
    margin: 5px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .form-card {
        padding: 30px 20px;
        border-radius: 12px;
    }
    
    .contract-intro {
        padding: 30px 20px;
    }
    
    .intro-header h1 {
        font-size: 28px;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .intro-item {
        padding: 20px;
    }
    
    .header h1 {
        font-size: 24px;
    }
    
    .header h2 {
        font-size: 22px;
    }
    
    .header p {
        font-size: 14px;
    }
    
    .form-group input,
    .form-group textarea {
        padding: 12px 14px;
        font-size: 14px;
    }
    
    .submit-btn {
        padding: 14px;
        font-size: 15px;
    }
    
    .contracts-grid {
        grid-template-columns: 1fr;
    }
}

/* 表格响应式 */
@media (max-width: 1024px) {
    .table-container {
        overflow-x: auto;
    }
    
    table {
        min-width: 800px;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 10px;
    background: #333;
    color: white;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    margin-bottom: 5px;
    z-index: 1000;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}