/* 登录页面样式 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
    padding: 40px;
    animation: slideUp 0.5s ease-out;
}

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

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 48px;
    color: #667eea;
    margin-bottom: 15px;
    display: block;
}

.login-header h2 {
    color: #333;
    margin-bottom: 10px;
    font-size: 28px;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 25px;
}

.login-form .form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.login-form .form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #dee2e6;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
}

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

.login-form .form-text {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 12px;
}

.btn-block {
    display: block;
    width: 100%;
}

.login-footer {
    margin-top: 20px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #dee2e6;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: #5a6fd8;
    text-decoration: underline;
}

/* 错误提示 */
.error-message {
    color: #dc3545;
    font-size: 14px;
    margin-top: 8px;
    display: none;
    align-items: center;
    gap: 5px;
}

.error-message.show {
    display: flex;
}

/* 密码输入反馈 */
.password-input.wrong {
    border-color: #dc3545;
    animation: shake 0.5s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.password-input.correct {
    border-color: #28a745;
}

/* 登录成功动画 */
.login-success {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.login-success.show {
    opacity: 1;
    pointer-events: all;
}

.success-box {
    background: white;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    animation: scaleIn 0.5s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.success-box i {
    font-size: 60px;
    color: #28a745;
    margin-bottom: 20px;
}

.success-box h3 {
    color: #333;
    margin-bottom: 10px;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
    }
    
    .login-header h2 {
        font-size: 24px;
    }
    
    .login-header i {
        font-size: 40px;
    }
}