/* 登录页面专用样式 */
.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.login-page .navbar {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.login-page .navbar .nav-brand a {
    color: white;
}

.login-page .navbar .nav-link {
    color: white;
}

.login-page .navbar .nav-link:hover {
    color: var(--accent-color);
}

/* 登录容器 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
    padding: 2rem 1rem;
}

.login-box {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 3rem;
    width: 100%;
    max-width: 450px;
    position: relative;
    overflow: hidden;
}

.login-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

/* 登录头部 */
.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-header h1 {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-light);
    font-size: 1rem;
}

/* 登录表单 */
.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
}

.login-form input[type="text"],
.login-form input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background: white;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* 密码输入框 */
.password-input {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input input {
    padding-right: 50px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
}

.password-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

.eye-icon {
    font-size: 1.2rem;
    opacity: 0.6;
}

/* 错误消息 */
.error-message {
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: 0.25rem;
    min-height: 1rem;
    transition: var(--transition);
}

/* 复选框样式 */
.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-light);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    margin-right: 0.5rem;
    position: relative;
    transition: var(--transition);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

/* 登录按钮 */
.btn-login {
    width: 100%;
    padding: 14px;
    font-size: 1.1rem;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.loading-text {
    margin-left: 0.5rem;
}

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 网络状态指示器 */
.network-status {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--background-light);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.status-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    opacity: 0.5;
    transition: var(--transition);
}

.status-item.active {
    opacity: 1;
    color: var(--primary-color);
}

.status-item.completed {
    opacity: 0.8;
    color: #10b981;
}

.status-item.completed .status-icon::after {
    content: '✓';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    color: #10b981;
    font-weight: bold;
    font-size: 0.8rem;
}

.status-item {
    position: relative;
}

.status-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.status-text {
    font-size: 0.9rem;
    font-weight: 500;
}

/* 表单链接 */
.form-links {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.form-links a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.form-links a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* 登录页脚 */
.login-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-light);
}

.login-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.login-footer a:hover {
    color: var(--accent-color);
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: white;
    margin: 20px;
    padding: 0;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
    padding: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-color);
}

.modal-body {
    padding: 2rem 1.5rem;
    text-align: center;
}

.error-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.modal-body p {
    margin: 0;
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.5;
}

.modal-footer {
    padding: 1rem 1.5rem 1.5rem;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .login-box {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }
    
    .login-header h1 {
        font-size: 1.75rem;
    }
    
    .form-links {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .login-box {
        padding: 1.5rem 1rem;
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }
    
    .modal-content {
        margin: 10px;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* 输入验证状态 */
.form-group.error input {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group.success input {
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* 按钮状态 */
.btn-login.loading .btn-text {
    display: none;
}

.btn-login.loading .btn-loading {
    display: flex !important;
}

/* 动画效果 */
.login-box {
    animation: slideUp 0.6s ease;
}

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

/* 输入框聚焦动画 */
.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label {
    transform: translateY(-20px) scale(0.8);
    color: var(--primary-color);
}