:root {
    --primary-color: #4A90E2;
    --primary-dark: #357ABD;
    --primary-light: #6BA6E8;
    --accent-color: #7ED321;
    --background-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 100%);
    --background-light: linear-gradient(135deg, #E8F4F8 0%, #F0F8FF 100%);
}

body.login-page {
    background: var(--background-light);
    background-attachment: fixed;
    font-family: 'Source Sans Pro', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
}

.login-box {
    width: 400px;
    margin: 0 auto;
}

.login-logo {
    margin-bottom: 20px;
    text-align: center;
}

.login-logo a {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: inline-block;
    transition: transform 0.3s ease;
}

.login-logo a:hover {
    transform: scale(1.02);
    text-decoration: none;
}

.login-logo a i {
    font-size: 28px;
    color: var(--accent-color);
}

.login-logo img {
    max-height: 70px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    display: block;
    margin: 0 auto;
}

.login-box-msg {
    margin-bottom: 25px;
    text-align: center;
    font-size: 16px;
    color: #555;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.login-box-msg i {
    color: var(--primary-color);
}

.login-page .card {
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(74, 144, 226, 0.15);
    border: none;
    overflow: hidden;
}

.login-page .card-body {
    padding: 30px;
}

.login-page .input-group-text {
    background-color: #f8f9fa;
    border-color: #dee2e6;
    color: var(--primary-color);
}

.login-page .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
}

.login-page .btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: 6px;
    font-weight: 600;
    padding: 10px;
    transition: all 0.3s ease;
}

.login-page .btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

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

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

.login-page .alert {
    border-radius: 8px;
    border: none;
}

.login-page .alert-success {
    background-color: #d4edda;
    color: #155724;
}

.login-page .alert-danger {
    background-color: #f8d7da;
    color: #721c24;
}

@media (max-width: 576px) {
    .login-box {
        width: 90%;
        margin: 0 auto;
    }

    .login-logo a {
        font-size: 24px;
    }

    .login-logo img {
        max-height: 55px;
    }
}