/* 登录页面样式 - 时光哨兵 */

/* CSS变量 */
:root {
    --login-primary: #4e73df;
    --login-primary-dark: #2e59d9;
    --login-primary-light: #a0c0ff;
    --login-success: #1cc88a;
    --login-danger: #e74a3b;
    --login-gray-100: #f8f9fc;
    --login-gray-200: #eaecf4;
    --login-gray-300: #dddfeb;
    --login-gray-600: #858796;
    --login-gray-800: #5a5c69;
}

/* 页面布局 */
.login-page {
    min-height: 100vh;
    background: var(--login-gray-100);
    overflow: hidden;
}

.login-container {
    display: flex;
    min-height: 100vh;
}

/* 左侧品牌区域 */
.login-brand {
    flex: 1;
    background: linear-gradient(135deg, var(--login-primary) 0%, var(--login-primary-dark) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.login-brand::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.3; }
}

.brand-content {
    text-align: center;
    z-index: 1;
    color: white;
}

.brand-logo {
    width: 100px;
    height: 100px;
    background: rgba(255,255,255,0.2);
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    backdrop-filter: blur(10px);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.brand-logo i {
    font-size: 3rem;
    color: white;
}

.brand-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
}

.brand-slogan {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 3rem;
}

.brand-features {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: rgba(255,255,255,0.15);
    border-radius: 50px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-2px);
}

.feature-item i {
    font-size: 1rem;
}

.feature-item span {
    font-size: 0.9rem;
}

.brand-footer {
    position: absolute;
    bottom: 2rem;
    color: rgba(255,255,255,0.7);
    font-size: 0.85rem;
    z-index: 1;
}

/* 右侧登录表单区域 */
.login-form-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: var(--login-gray-100);
}

.login-form-container {
    width: 100%;
    max-width: 420px;
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
}

.form-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.form-header h2 {
    font-size: 1.8rem;
    color: var(--login-gray-800);
    margin-bottom: 0.5rem;
}

.form-header p {
    color: var(--login-gray-600);
    font-size: 0.95rem;
}

/* 表单样式 */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--login-gray-800);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group label i {
    color: var(--login-primary);
    width: 16px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    padding-left: 2.75rem;
    border: 2px solid var(--login-gray-200);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--login-gray-100);
}

.form-group input:focus {
    outline: none;
    border-color: var(--login-primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(78, 115, 223, 0.1);
}

.form-group input::placeholder {
    color: var(--login-gray-600);
    opacity: 0.7;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--login-gray-600);
    cursor: pointer;
    padding: 0.25rem;
    transition: color 0.3s ease;
}

.toggle-password:hover {
    color: var(--login-primary);
}

/* 表单选项 */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--login-gray-600);
    user-select: none;
}

.remember-me input[type="checkbox"] {
    display: none;
}

.remember-me .checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--login-gray-300);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background: white;
}

.remember-me .checkmark i {
    font-size: 14px;
    color: white;
    opacity: 0;
    transition: opacity 0.2s ease;
}

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

.remember-me input[type="checkbox"]:checked + .checkmark i {
    opacity: 1;
}

.forgot-link {
    color: var(--login-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.forgot-link:hover {
    color: var(--login-primary-dark);
    text-decoration: underline;
}

/* 错误消息 */
.error-message {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    color: var(--login-danger);
    font-size: 0.9rem;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.error-message i {
    font-size: 1rem;
}

/* 登录按钮 */
.btn-login {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--login-primary) 0%, var(--login-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(78, 115, 223, 0.4);
}

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

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-loader {
    font-size: 1.1rem;
}

/* 表单底部 */
.form-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--login-gray-200);
    font-size: 0.9rem;
    color: var(--login-gray-600);
}

.form-footer a {
    color: var(--login-primary);
    text-decoration: none;
    font-weight: 500;
}

.form-footer a:hover {
    text-decoration: underline;
}

/* 背景装饰 */
.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.circle-1 {
    width: 400px;
    height: 400px;
    background: var(--login-primary);
    top: -100px;
    right: -100px;
}

.circle-2 {
    width: 300px;
    height: 300px;
    background: var(--login-primary-dark);
    bottom: -50px;
    left: -50px;
}

.circle-3 {
    width: 200px;
    height: 200px;
    background: var(--login-primary-light);
    bottom: 20%;
    right: 10%;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .login-container {
        flex-direction: column;
    }

    .login-brand {
        min-height: auto;
        padding: 2rem;
    }

    .brand-logo {
        width: 70px;
        height: 70px;
    }

    .brand-logo i {
        font-size: 2rem;
    }

    .brand-title {
        font-size: 1.8rem;
    }

    .brand-slogan {
        font-size: 0.95rem;
        margin-bottom: 2rem;
    }

    .brand-features {
        gap: 1rem;
    }

    .feature-item {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    .brand-footer {
        display: none;
    }

    .login-form-wrapper {
        padding: 1.5rem;
    }

    .login-form-container {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .login-form-container {
        padding: 1.5rem;
        border-radius: 15px;
    }

    .form-header h2 {
        font-size: 1.5rem;
    }

    .form-group input {
        padding: 0.75rem 1rem;
        padding-left: 2.5rem;
        font-size: 0.95rem;
    }

    .btn-login {
        padding: 0.875rem;
    }
}