:root {
    --primary-color: #ff6600;
    --primary-hover: #e65c00;
    --dark-bg: #1e1e1e;
    --light-bg: #f8f9fa;
    --text-color: #333333;
    --white: #ffffff;
}

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

body {
    background-color: var(--light-bg);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navbar Sticky e Responsive */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--dark-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 5%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: bold;
}

.logo-text span {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 15px;
    align-items: center;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.btn-orange {
    background-color: var(--primary-color);
    color: var(--white) !important;
    padding: 6px 14px;
    border-radius: 5px;
    transition: background-color 0.3s ease !important;
}

.btn-orange:hover {
    background-color: var(--primary-hover) !important;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://images.unsplash.com/photo-1498050108023-c5249f4df085?auto=format&fit=crop&w=1350&q=80') center/cover no-repeat;
    color: var(--white);
    text-align: center;
    padding: 60px 15px;
}

.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.hero p {
    font-size: 1rem;
    color: #ddd;
}

.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 15px;
    flex: 1;
}

.section-title {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: 25px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 8px auto 0;
    border-radius: 2px;
}

/* Servizi */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.service-card {
    background: var(--white);
    padding: 25px 18px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    border-top: 4px solid var(--primary-color);
}

.service-card h3 {
    margin-bottom: 10px;
    color: var(--dark-bg);
}

/* Portfolio Gallery */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.portfolio-item {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    background: var(--white);
}

.portfolio-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.portfolio-info {
    padding: 12px;
    text-align: center;
}

/* Form (Login e Register) */
.form-wrapper {
    max-width: 400px;
    margin: 20px auto;
    background: var(--white);
    padding: 25px 20px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border-top: 5px solid var(--primary-color);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 0.88rem;
}

.form-group input {
    width: 100%;
    padding: 11px;
    border: 1px solid #ccc;
    border-radius: 5px;
    outline: none;
    font-size: 0.95rem;
}

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

.btn-submit {
    width: 100%;
    padding: 11px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
}

.form-footer {
    text-align: center;
    margin-top: 18px;
    font-size: 0.85rem;
}

.form-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

footer {
    background-color: var(--dark-bg);
    color: var(--white);
    text-align: center;
    padding: 18px;
    margin-top: auto;
    font-size: 0.85rem;
}

/* ==========================================
   OTTIMIZZAZIONE SPECIFICA PER SMARTPHONE
   ========================================== */
@media (max-width: 600px) {
    .navbar {
        flex-direction: column;
        gap: 12px;
        padding: 12px 15px;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 10px 14px;
    }

    .nav-links a {
        font-size: 0.88rem;
    }

    .btn-orange {
        padding: 5px 12px;
    }

    .hero {
        padding: 40px 15px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .services-grid, .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-item img {
        height: 180px;
    }
}