:root {
    /* Cores padrão (serão alteradas via JS) */
    --cor-fundo: #f4f7f6;
    --cor-primaria: #007bff;
    --cor-texto: #333333;
}

body {
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

#logo-academia {
    max-width: 180px;
    margin-bottom: 30px;
}

#login-box {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 6px;
    box-sizing: border-box;
}

.btn-primario {
    width: 100%;
    padding: 14px;
    background-color: var(--cor-primaria);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 15px;
}