/**
 * 认证页面样式
 * 个人名片系统 v3.0
 * 
 * @author 开发团队
 * @version 3.0
 * @date 2024-12-19
 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    line-height: 1.6;
}

/* 认证容器 */
.auth-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

/* 认证卡片 */
.auth-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: slideUp 0.6s ease-out;
}

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

/* 认证头部 */
.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 8px;
}

.auth-header p {
    color: #718096;
    font-size: 16px;
}

/* 表单样式 */
.auth-form {
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2d3748;
    font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fff;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder {
    color: #a0aec0;
}

.form-hint {
    font-size: 12px;
    color: #718096;
    margin-top: 4px;
}

/* 输入组 */
.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 1;
}

.input-group .btn {
    white-space: nowrap;
    padding: 12px 16px;
}

/* 复选框样式 */
.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #667eea;
}

.form-check label {
    margin-bottom: 0;
    font-size: 14px;
    color: #4a5568;
    cursor: pointer;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-outline {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-outline:hover:not(:disabled) {
    background: #667eea;
    color: white;
}

.btn-full {
    width: 100%;
    padding: 14px 24px;
    font-size: 16px;
}

/* 加载动画 */
.spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 提示框样式 */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    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-error {
    background: #fed7d7;
    color: #c53030;
    border: 1px solid #feb2b2;
}

.alert-success {
    background: #c6f6d5;
    color: #2f855a;
    border: 1px solid #9ae6b4;
}

.alert svg {
    flex-shrink: 0;
}

/* 认证页脚 */
.auth-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
}

.auth-footer p {
    margin-bottom: 8px;
    color: #718096;
    font-size: 14px;
}

.auth-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.auth-footer a:hover {
    color: #5a67d8;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .auth-container {
        padding: 0 10px;
    }
    
    .auth-card {
        padding: 30px 20px;
        border-radius: 15px;
    }
    
    .auth-header h1 {
        font-size: 24px;
    }
    
    .auth-header p {
        font-size: 14px;
    }
    
    .form-group input {
        padding: 10px 14px;
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 16px;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .auth-card {
        background: rgba(26, 32, 44, 0.95);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .auth-header h1 {
        color: #f7fafc;
    }
    
    .auth-header p {
        color: #a0aec0;
    }
    
    .form-group label {
        color: #e2e8f0;
    }
    
    .form-group input {
        background: #2d3748;
        border-color: #4a5568;
        color: #f7fafc;
    }
    
    .form-group input:focus {
        border-color: #667eea;
        background: #2d3748;
    }
    
    .form-hint {
        color: #a0aec0;
    }
    
    .form-check label {
        color: #e2e8f0;
    }
    
    .auth-footer {
        border-color: #4a5568;
    }
    
    .auth-footer p {
        color: #a0aec0;
    }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .auth-card {
        border: 2px solid #000;
    }
    
    .btn-primary {
        background: #000;
        border: 2px solid #000;
    }
    
    .btn-outline {
        border: 2px solid #000;
        color: #000;
    }
}