.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8eef5 100%);
}

.login-card {
    background: var(--white);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(26, 95, 180, 0.12);
    overflow: hidden;
    width: 100%;
    max-width: 380px;
    animation: fadeInUp 0.5s ease;
    border: none;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color-1) 0%, var(--primary-color-2) 100%);
    padding: 1.5rem 1.5rem;
    text-align: center;
}

.login-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.logo-icon-wrapper {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon {
    width: 100%;
    height: 100%;
    color: white;
}

.login-logo .logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
}

.login-title {
    font-size: 1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin: 0;
}

.login-form {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    margin-bottom: 0;
}

.form-label {
    display: block;
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    border: 2px solid var(--gray);
    border-radius: 8px;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.captcha-group {
    display: flex;
    gap: 0.625rem;
    align-items: flex-end;
}

.captcha-group .form-group {
    flex: 1;
    margin-bottom: 0;
}

.captcha-image {
    width: 110px;
    height: 42px;
    border: 2px solid var(--gray);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--gray-light);
}

.captcha-image:hover {
    border-color: var(--accent-color);
    transform: scale(1.02);
}

.captcha-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: -0.25rem;
}

.form-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.form-checkbox label {
    font-size: 0.875rem;
    color: var(--gray-dark);
    cursor: pointer;
    user-select: none;
}

.login-footer {
    text-align: center;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-light);
    color: var(--gray-dark);
    font-size: 0.8125rem;
    background: var(--gray-light);
}

.login-tip {
    margin: 0;
}

.btn-block {
    width: 100%;
    padding: 0.75rem;
    font-size: 0.9375rem;
    margin-top: 0.25rem;
    background: linear-gradient(135deg, var(--accent-color) 0%, #1976d2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
}

.btn-block:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.4);
}

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

.btn-loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn-loading .btn-text {
    visibility: hidden;
}

.btn-loading .btn-loading-text {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
}

.btn-loading::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 18px;
    height: 18px;
    border: 2px solid var(--white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 0.75rem;
    }

    .login-card {
        border-radius: 12px;
    }

    .login-header {
        padding: 1.25rem 1.25rem;
    }

    .login-form {
        padding: 1.25rem;
        gap: 0.875rem;
    }

    .login-logo .logo-text {
        font-size: 1.375rem;
    }

    .captcha-group {
        flex-direction: column;
        align-items: stretch;
    }

    .captcha-image {
        width: 100%;
        height: 42px;
    }
}