:root {
    --black: #000000;
    --white: #ffffff;
    --gray: #f5f5f5;
    --gray-dark: #333333;
    --gold: #D4AF37;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: var(--black);
    color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container {
    background-color: var(--gray-dark);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 450px;
    padding: 40px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.login-header p {
    color: var(--gray);
    font-size: 1rem;
}

.gold {
    color: var(--gold);
}

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 5px;
    font-size: 0.9rem;
}

.alert.error {
    background-color: rgba(255, 0, 0, 0.1);
    color: #ff6b6b;
    border: 1px solid rgba(255, 0, 0, 0.2);
}

.login-form {
    display: flex;
    flex-direction: column;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--gray);
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #444;
    border-radius: 5px;
    background-color: #222;
    color: var(--white);
    font-size: 1rem;
    transition: border 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--gold);
}

.btn-login {
    background-color: var(--gold);
    color: var(--black);
    border: none;
    padding: 12px;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 10px;
}

.btn-login:hover {
    background-color: #e6c260;
}

.login-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--gray);
}

.login-footer a {
    color: var(--gold);
    text-decoration: none;
    transition: color 0.3s;
}

.login-footer a:hover {
    color: #e6c260;
}

/* Estilo específico para admin */
.admin-login {
    border: 2px solid var(--gold);
}

/* Responsividade */
@media (max-width: 576px) {
    .login-container {
        padding: 30px 20px;
    }
    
    .login-header h1 {
        font-size: 1.8rem;
    }
}