* {
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, sans-serif;
}

body {
    margin: 0;
    height: 100vh;
    background: 
        linear-gradient(
            rgba(0, 0, 0, 0.45),
            rgba(0, 0, 0, 0.45)
        ),
        url("../images/fisioterapia.jpg") no-repeat center center fixed;
    background-size: cover;
}

/* Contenedor centrado */
.login-container {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Tarjeta */
.login-card {
    background: #ffffff;
    padding: 40px;
    width: 100%;
    max-width: 380px;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
    text-align: center;
}

/* Título */
.login-card h2 {
    margin-bottom: 25px;
    color: #2e7d32;
}

/* Inputs */
.login-card input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 15px;
}

.login-card input:focus {
    outline: none;
    border-color: #2e7d32;
}

/* Botón */
.login-card button {
    width: 100%;
    padding: 12px;
    background: #2e7d32;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}

.login-card button:hover {
    background: #1b5e20;
}

/* Error */
.error {
    color: #c62828;
    background: #ffebee;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
}