/* ==========================
   RESET E BASE
   ========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--page-bg);
    color: var(--text-color-dark);
}

/* ==========================
   NAVBAR
   ========================== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing) 5%;
    background-color: var(--nav-bg);
    color: var(--text-color-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.navbar .logo {
    height: clamp(40px, 8vw, 80px); /* logo fluido */
}

.navbar .left {
    display: flex;
    align-items: center;
    gap: 1rem; /* per affiancare il logo al saluto */
}

.navbar .left p {
    margin: 0;
    font-size: clamp(0.9rem, 1.5vw, 1.2rem);
    color: var(--text-color-light);
}

.navbar .right {
    display: flex;
    align-items: center;
}

.navbar .right a {
    color: var(--text-color-light);
    text-decoration: none;
    margin-left: var(--spacing);
    font-weight: 500;
    font-size: clamp(1rem, 2vw, 1.5rem); /* font fluido */
    transition: color 0.3s ease;
}

.navbar .right a:hover {
    color: var(--nav-link-hover);
}

/* ==========================
   LOGOUT BUTTON NAVBAR
   ========================== */
.navbar .right form {
    margin-left: var(--spacing);
}

.navbar .right form button {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    border: none;
    border-radius: var(--border-radius);
    padding: 0.5rem 1rem;
    font-size: clamp(0.9rem, 2vw, 1rem);
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.navbar .right form button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

/* ==========================
   HAMBURGER
   ========================== */
.hamburger {
    display: none;
    font-size: clamp(1.5rem, 3vw, 2rem);
    background: none;
    border: none;
    color: var(--text-color-light);
    cursor: pointer;
}

/* ==========================
   RESPONSIVE NAVBAR
   ========================== */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .navbar .right {
        display: none;
        flex-direction: column;
        width: 100%;
        margin-top: 0.5rem;
        background-color: var(--nav-bg);
        border-top: 1px solid rgba(255,255,255,0.1);
    }

    .navbar .right.show {
        display: flex;
    }

    .navbar .right a,
    .navbar .right form button {
        margin: 0;
        width: 100%;
        text-align: left;
        padding: 0.5rem 1rem;
        font-size: clamp(1.1rem, 3vw, 1.3rem);
    }
}

@media (max-width: 480px) {
    .navbar .right a,
    .navbar .right form button {
        font-size: clamp(1rem, 4vw, 1.2rem);
    }
}

/* ==========================
   CARD / FORM LOGIN
   ========================== */
.login-container {
    max-width: 400px;
    margin: 5% auto;
    padding: 2rem;
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
    border-radius: var(--border-radius);
}

.login-container:hover {
    box-shadow: var(--card-shadow-hover);
}

.login-container h2 {
    font-family: var(--font-heading);
    margin-bottom: var(--spacing);
    color: var(--text-color-dark);
    font-size: clamp(1.5rem, 4vw, 2rem); /* titolo fluido */
}

.login-container input,
.login-container button {
    width: 100%;
    padding: 0.75rem;
    margin-top: 0.5rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid #ccc;
    font-family: var(--font-main);
    font-size: clamp(0.9rem, 2vw, 1rem);
}

.login-container button {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.login-container button:hover {
    background-color: var(--primary-hover);
}

.login-container .error,
.login-container .logout {
    color: red;
    margin-bottom: 1rem;
    font-size: clamp(0.8rem, 1.5vw, 0.9rem);
}

/* ==========================
   CARD HOME (verticale)
   ========================== */
.content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    padding: var(--spacing);
}

.card {
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    width: 100%;
    max-width: 800px;
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}

.card:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-5px);
}

.card h3 {
    font-family: var(--font-heading);
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    margin-bottom: 0.75rem;
}

.card p {
    font-size: clamp(0.9rem, 2vw, 1rem);
    margin-bottom: 1rem;
}

.card ul {
    list-style: none;
    padding-left: 0;
}

.card ul li {
    margin-bottom: 0.5rem;
}

.card .btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: var(--text-color-light);
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-size: clamp(0.9rem, 2vw, 1rem);
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.card .btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

/* ==========================
   CARD RESPONSIVE
   ========================== */
@media (max-width: 768px) {
    .card {
        max-width: 100%;
    }
}