:root {
    --color-principal: #e63946;  
    --color-secundario: #1d3557; 
    --color-fondo: #f8f9fa;      
    --color-blanco: #ffffff;
    --color-texto: #333333;
    --color-borde: #dddddd;
    --color-error: #f8d7da;
    --color-error-texto: #721c24;
    --color-exito: #d4edda;
    --color-exito-texto: #155724;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.auth-body {
    background: linear-gradient(135deg, var(--color-principal) 0%, #ff6b6b 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-body-setup {
    background: linear-gradient(135deg, var(--color-secundario) 0%, #457b9d 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    width: 100%;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.auth-box {
    background: var(--color-blanco);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 450px; 
    text-align: center;
}

.auth-logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--color-secundario);
    margin-bottom: 15px;
}

.auth-subtitle {
    font-size: 14px;
    color: #666666;
    margin-bottom: 25px;
    line-height: 1.4;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-texto);
    margin-bottom: 6px;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-borde);
    border-radius: 6px;
    font-size: 16px;
    outline: none;
    transition: border 0.3s ease;
}

.form-group input:focus {
    border-color: var(--color-principal);
}

.btn-auth {
    width: 100%;
    padding: 14px;
    background-color: var(--color-principal);
    color: var(--color-blanco);
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-auth:hover {
    background-color: #c92a3a;
}

.btn-setup {
    background-color: var(--color-secundario);
}

.btn-setup:hover {
    background-color: #112237;
}

.alerta {
    padding: 12px;
    border-radius: 6px;
    font-size: 14px;
    margin-bottom: 20px;
    text-align: left;
}

.alerta-error {
    background-color: var(--color-error);
    color: var(--color-error-texto);
    border: 1px solid #f5c6cb;
}

.alerta-exito {
    background-color: var(--color-exito);
    color: var(--color-exito-texto);
    border: 1px solid #c3e6cb;
}

/* ==========================================
   MEDIA QUERIES (Responsivo Celular y Tablet)
   ========================================== */
@media (max-width: 480px) {
    .auth-box {
        padding: 30px 20px;
        box-shadow: none; 
        border-radius: 8px;
    }
    .auth-logo { font-size: 24px; }
    .form-group input { padding: 10px; font-size: 15px; }
    .btn-auth { padding: 12px; }
}