:root {
    --cor-fundo: #ffffff;
    --cor-cabecalho: #000000;
    --cor-vinho: #800000;
    --cor-vermelho: #ff0000;
    --cor-texto-menu: #ffffff;
}

body {
    background-color: var(--cor-fundo);
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: var(--cor-cabecalho);
    color: white;
    padding: 1rem;
    text-align: center;
}

nav {
    background-color: var(--cor-vinho);
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

nav ul li a {
    color: var(--cor-texto-menu);
    text-decoration: none;
    padding: 1rem 1.5rem;
    display: block;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: var(--cor-vermelho);
}

.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.login-container h2 {
    text-align: center;
    color: var(--cor-vinho);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

.form-group input {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}

.btn-login {
    width: 100%;
    padding: 10px;
    background-color: var(--cor-vinho);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.btn-login:hover {
    background-color: var(--cor-vermelho);
}

.error-msg {
    color: red;
    text-align: center;
    margin-bottom: 10px;
}

/* Loader Overlay */
#loader-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    z-index: 9999;
    text-align: center;
    padding-top: 200px;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 6px solid #f3f3f3;
    border-top: 6px solid var(--cor-vinho);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

#loader-overlay p {
    margin-top: 15px;
    font-weight: bold;
    color: var(--cor-vinho);
}