:root {
    --primary: #4e73df;
    --primary-dark: #2e59d9;
    --primary-light: #7a93e8;
    --secondary: #2c3e50;
    --success: #1cc88a;
    --warning: #f6c23e;
    --danger: #e74a3b;
    --info: #36b9cc;
    --light: #f8f9fc;
    --dark: #5a5c69;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 450px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    overflow: hidden;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
}

    .login-header i {
        font-size: 4rem;
        margin-bottom: 15px;
        color: white;
    }

    .login-header h2 {
        font-weight: 700;
        margin: 0;
        font-size: 2rem;
    }

    .login-header p {
        margin: 10px 0 0 0;
        opacity: 0.9;
        font-size: 0.95rem;
    }

.login-body {
    padding: 40px 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
    display: block;
}

.input-group {
    position: relative;
}

.input-group-text {
    background: #f8f9fc;
    border: 1px solid #e3e6f0;
    border-right: none;
    color: var(--primary);
    padding: 12px 15px;
}

.form-control {
    border: 1px solid #e3e6f0;
    border-left: none;
    padding: 12px 15px;
    font-size: 1rem;
    transition: all 0.3s;
    border-radius: 0 8px 8px 0;
}

    .form-control:focus {
        border-color: var(--primary);
        box-shadow: none;
        outline: none;
    }

        .form-control:focus + .input-group-text {
            border-color: var(--primary);
        }

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #6c757d;
    z-index: 10;
}

    .password-toggle:hover {
        color: var(--primary);
    }

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
}

    .remember-me input[type="checkbox"] {
        width: 18px;
        height: 18px;
        cursor: pointer;
        accent-color: var(--primary);
    }

    .remember-me label {
        color: var(--dark);
        cursor: pointer;
        font-size: 0.95rem;
    }

.forgot-password {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
}

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

.btn-login {
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    padding: 14px 20px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    width: 100%;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

    .btn-login:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(78, 115, 223, 0.4);
    }

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

.login-footer {
    text-align: center;
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid #e3e6f0;
}

    .login-footer p {
        color: #6c757d;
        font-size: 0.9rem;
        margin: 0;
    }

    .login-footer a {
        color: var(--primary);
        text-decoration: none;
        font-weight: 600;
    }

        .login-footer a:hover {
            text-decoration: underline;
        }

.alert-message {
    background: #fff3cd;
    border-left: 4px solid var(--warning);
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #856404;
}

    .alert-message i {
        font-size: 1.2rem;
    }

.features {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid #e3e6f0;
}

.feature {
    text-align: center;
}

    .feature i {
        font-size: 1.5rem;
        color: var(--primary);
        margin-bottom: 5px;
    }

    .feature span {
        display: block;
        font-size: 0.85rem;
        color: #6c757d;
    }

@media (max-width: 576px) {
    body {
        padding: 10px;
    }

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

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

    .remember-forgot {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

    .features {
        gap: 15px;
        flex-wrap: wrap;
    }
}