:root {
    --primary: #253d83;
    --light: #EFF5FF;
    --dark: #1B2C51;
    --red: #B61F25;
}

body {
    background-color: var(--dark);
    font-family: 'Poppins', sans-serif;
    color: var(--dark);
}

.bg-body {
    background-color: var(--light);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.text-center h1 {
    color: var(--dark);
    font-weight: 700;
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.text-gray-400 {
    color: #7e8299;
    font-weight: 400;
    font-size: 1rem;
}

.text-muted {
    color: #a1a5b7 !important;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.custom-login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light);
    border: 2px solid var(--primary);
    border-radius: 8px;
    padding: 12px 24px;
    color: var(--dark);
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.custom-login-btn i {
    color: var(--primary);
    font-size: 1.5rem;
    margin-right: 8px;
    transition: color 0.3s ease;
}

.custom-login-btn:hover {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(37, 61, 131, 0.3);
    transform: translateY(-2px);
}

.custom-login-btn:hover i {
    color: #ffffff;
}

.custom-login-btn:active {
    transform: translateY(0);
    box-shadow: none;
}

.text-center.mb-5 img {
    transition: transform 0.3s ease;
}

.text-center.mb-5 img:hover {
    transform: scale(1.05);
}

.form-label {
    color: var(--dark);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.form-control-solid {
    background-color: #ffffff;
    border: 1px solid #d1d5e0;
    border-radius: 6px;
    padding: 12px 15px;
    color: var(--dark);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control-solid:focus {
    border-color: var(--primary);
    box-shadow: 0 0 5px rgba(37, 61, 131, 0.5);
    outline: none;
}

.form-control-solid::placeholder {
    color: #a1a5b7;
}

.iti {
    width: 100%;
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 12px 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #1f326b;
    border-color: #1f326b;
    box-shadow: 0 4px 15px rgba(37, 61, 131, 0.4);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
}

.btn-link {
    color: var(--primary);
    font-weight: 500;
    transition: color 0.3s ease;
}

.btn-link:hover {
    color: #1f326b;
    text-decoration: underline;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: var(--red);
    border-color: #f5c6cb;
}

@media (max-width: 576px) {
    .w-lg-500px {
        width: 100%;
        padding: 15px;
    }

    .custom-login-btn {
        padding: 10px 18px;
        font-size: 0.9rem;
    }

    .btn-primary {
        font-size: 1rem;
        padding: 10px 16px;
    }
}