.login-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px;
    position: relative;
}

/* 复用首页网格背景 */
.grid-bg-login {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(#e5e7eb 1px, transparent 1px), linear-gradient(90deg, #e5e7eb 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.4;
    z-index: -1;
}

.login-card {
    background: white;
    width: 100%;
    max-width: 480px;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border: 1px solid #f1f5f9;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.875rem;
    color: #1e3a8a;
    margin-bottom: 8px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: #374151;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
}

.form-input {
    width: 100%;
    padding: 12px 12px 12px 42px;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    transition: all 0.2s;
}

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

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    margin-bottom: 24px;
}

/* 社会化登录 */
.social-divider {
    position: relative;
    text-align: center;
    margin: 24px 0;
    font-size: 0.875rem;
    color: #9ca3af;
}

.social-divider::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 30%;
    height: 1px;
    background: #e5e7eb;
}

.social-divider::after {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    width: 30%;
    height: 1px;
    background: #e5e7eb;
}

.social-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    background: white;
    cursor: pointer;
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .navbar-menu {
        display: none;
    }

    .login-card {
        padding: 30px 20px;
    }
}