:root {
        --primary-color: #03bb65;
        --secondary-color: #7fcd83;
        --accent-color: #edf8b1;
        --text-color: #253238;
        --light-color: #f8f9fa;
    }

    body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        color: var(--text-color);
        line-height: 1.6;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 1rem;
    }

    .login-container {
        max-width: 450px;
        width: 100%;
    }

    .login-card {
        background-color: white;
        border-radius: 20px;
        padding: 2.5rem;
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        border: none;
    }

    .login-header {
        text-align: center;
        margin-bottom: 2rem;
    }

    .login-logo {
        width: 90px;
        height: 90px;
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.5rem;
        box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    }

    .login-logo i {
        font-size: 2.8rem;
        color: white;
    }

    .login-title {
        color: var(--primary-color);
        font-weight: 700;
        margin-bottom: 0.5rem;
    }

    .login-subtitle {
        color: #6c757d;
        font-size: 1rem;
    }

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

    .form-control {
        border-radius: 12px;
        padding: 0.75rem 1rem;
        border: 1px solid #dee2e6;
        transition: all 0.3s ease;
        font-size: 1rem;
    }

    .form-control:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 0.25rem rgba(44, 127, 184, 0.25);
    }

    .input-group-text {
        background-color: white;
        border: 1px solid #dee2e6;
        border-right: none;
        border-radius: 12px 0 0 12px;
    }

    .input-group .form-control {
        border-left: none;
        border-radius: 0 12px 12px 0;
    }

    .btn-login {
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        color: white;
        border: none;
        border-radius: 12px;
        padding: 0.85rem;
        font-weight: 600;
        font-size: 1.1rem;
        transition: all 0.3s ease;
        box-shadow: 0 4px 15px rgba(44, 127, 184, 0.3);
        width: 100%;
    }

    .btn-login:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(44, 127, 184, 0.4);
        color: white;
    }

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

    .login-options {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin: 1.5rem 0;
    }

    .form-check-input:checked {
        background-color: var(--primary-color);
        border-color: var(--primary-color);
    }

    .forgot-password {
        color: var(--primary-color);
        text-decoration: none;
        font-weight: 500;
        transition: color 0.3s ease;
    }

    .forgot-password:hover {
        color: var(--secondary-color);
        text-decoration: underline;
    }

    .login-footer {
        text-align: center;
        margin-top: 2rem;
        padding-top: 1.5rem;
        border-top: 1px solid #e9ecef;
    }

    .login-footer p {
        margin-bottom: 0.5rem;
        color: #6c757d;
    }

    .back-to-home {
        color: var(--primary-color);
        text-decoration: none;
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        transition: color 0.3s ease;
    }

    .back-to-home:hover {
        color: var(--secondary-color);
        text-decoration: underline;
    }

    .back-to-home i {
        margin-right: 0.5rem;
    }

    .alert {
        border-radius: 12px;
        border: none;
        padding: 1rem 1.25rem;
    }

    .alert-danger {
        background-color: rgba(220, 53, 69, 0.1);
        color: #dc3545;
    }

    /* Responsive adjustments */
    @media (max-width: 576px) {
        .login-card {
            padding: 2rem 1.5rem;
        }

        .login-logo {
            width: 80px;
            height: 80px;
        }

        .login-logo i {
            font-size: 2.5rem;
        }

        .login-options {
            flex-direction: column;
            gap: 1rem;
            align-items: flex-start;
        }

        .forgot-password {
            align-self: flex-end;
        }
    }

    /* Animation for error message */
    @keyframes shake {

        0%,
        100% {
            transform: translateX(0);
        }

        10%,
        30%,
        50%,
        70%,
        90% {
            transform: translateX(-5px);
        }

        20%,
        40%,
        60%,
        80% {
            transform: translateX(5px);
        }
    }

    .shake {
        animation: shake 0.5s ease-in-out;
    }