/* 认证页面样式 */

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

/* 导航栏 */
.navbar {
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 20px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: #1e40af;
}

.nav-buttons {
    display: flex;
    gap: 12px;
}

.btn {
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 14px;
    border: none;
    cursor: pointer;
    display: inline-block;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
}

.btn-primary {
    background-color: #2c5aa0;
    color: white;
}

.btn-primary:hover {
    background-color: #254d87;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.16), 0 2px 5px rgba(0, 0, 0, 0.23);
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
    border: none;
}

.btn-secondary:hover {
    background-color: #5a6268;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.16), 0 2px 5px rgba(0, 0, 0, 0.23);
}

/* 登录容器 */
.login-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 70px);
}

.login-box {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    padding: 40px;
    width: 100%;
    max-width: 450px;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #1e293b;
    font-size: 28px;
    font-weight: 700;
}

.error-message {
    background-color: #fee2e2;
    color: #dc2626;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    border: 1px solid #fecaca;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #334155;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group .btn-primary {
    width: 100%;
    padding: 12px;
    font-size: 16px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    color: #64748b;
    font-size: 14px;
}

.login-footer a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.login-footer a:hover {
    color: #1d4ed8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-buttons {
        gap: 8px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .login-box {
        padding: 30px 20px;
    }
    
    .login-box h2 {
        font-size: 24px;
    }
}

/* 验证码样式 */
.captcha-group {
    margin-bottom: 24px;
}

.captcha-container {
    display: flex;
    gap: 12px;
    align-items: center;
}

.captcha-container input {
    flex: 1;
    min-width: 0;
}

.captcha-image {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: #f9fafb;
}

.captcha-image:hover {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.captcha-image img {
    width: 120px;
    height: 40px;
    display: block;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-buttons {
        gap: 8px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .login-box {
        padding: 30px 20px;
    }
    
    .login-box h2 {
        font-size: 24px;
    }
    
    .captcha-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .captcha-image {
        align-self: center;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 15px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .login-box {
        padding: 24px 16px;
    }
    
    .form-group input {
        padding: 10px 14px;
        font-size: 15px;
    }
    
    .form-group .btn-primary {
        padding: 10px;
        font-size: 15px;
    }
}