:root {
    --color-black: #111;
    --color-blue: #003087;
    --color-orange: #FF6900;
    --color-white: #ffffff;
    --color-light-gray: #f8f9fa;
    --color-dark-gray: #2c2c2c;

    /* Theme Variables - Light Mode */
    --bg-main: var(--color-white);
    --bg-section: var(--color-white);
    --bg-alt: var(--color-light-gray);
    --text-main: var(--color-black);
    --text-muted: #666;
    --card-bg: var(--color-white);
    --card-border: rgba(0, 0, 0, 0.1);
    --navbar-bg: rgba(17, 17, 17, 0.95);
    --filter-bg: var(--color-white);
    --filter-border: var(--color-blue);
    --filter-text: var(--color-blue);
}

body.dark-mode {
    --bg-main: var(--color-dark-gray);
    --bg-section: var(--color-dark-gray);
    --bg-alt: #1a1a1a;
    --text-main: var(--color-white);
    --text-muted: #aaa;
    --card-bg: #1a1a1a;
    --card-border: #333;
    --navbar-bg: rgba(0, 0, 0, 0.98);
    --filter-bg: #1a1a1a;
    --filter-border: #444;
    --filter-text: #eee;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-main);
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* ===== NAVBAR ===== */
.navbar {
    background: var(--navbar-bg);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
    background: rgba(17, 17, 17, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--color-white) !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--color-orange) !important;
}

/* ===== HERO SECTION ===== */
.hero-section {
    position: relative;
    height: clamp(60vh, 80vw, 90vh);
    min-height: 500px;
    background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-black) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(17, 17, 17, 0.6) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: 2rem;
}

.hero-title {
    font-size: clamp(2rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 20px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1.2s ease;
}

.hero-section .btn-primary {
    background: var(--color-orange);
    border: none;
    padding: 1rem 2.5rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    animation: fadeInUp 1.4s ease;
}

.hero-section .btn-primary:hover {
    background: #ff7a1a;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 105, 0, 0.4);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-white);
    font-size: 2rem;
    animation: bounce 2s infinite;
    z-index: 2;
}

/* ===== SECTION Z-INDEX ===== */
#filters {
    position: relative;
    z-index: 10;
    padding-top: 3rem !important;
    margin-top: -2px;
    background-color: var(--bg-section);
    transition: background-color 0.4s ease;
}

#gallery {
    position: relative;
    z-index: 10;
    background-color: var(--bg-section);
    transition: background-color 0.4s ease;
}

#about {
    position: relative;
    z-index: 10;
    background-color: var(--color-light-gray) !important;
    /* Sempre chiaro */
    color: var(--color-black) !important;
    /* Sempre scuro */
    padding: 80px 0;
}

/* ===== SECTION TITLES ===== */
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--color-orange);
    border-radius: 2px;
}

/* ===== FILTER BUTTONS ===== */
.btn-filter {
    background: var(--filter-bg);
    border: 2px solid var(--filter-border);
    color: var(--filter-text);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-filter:hover,
.btn-filter.active {
    background: var(--color-blue);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 48, 135, 0.3);
}

/* ===== CARDS ===== */
.car-card {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 48, 135, 0.2);
}

.card-img-top {
    height: 250px;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.card:hover .card-img-top {
    transform: scale(1.05);
}

.photo-count-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(17, 17, 17, 0.85);
    color: var(--color-white);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.photo-count-badge i {
    font-size: 1rem;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.card-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.badge {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
    font-weight: 600;
}

.view-gallery-btn {
    width: 100%;
    font-weight: 600;
    transition: all 0.3s ease;
}

.view-gallery-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* ===== ABOUT SECTION (Spostato sopra) ===== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--color-white) !important;
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-blue) !important;
    margin-bottom: 0.5rem;
}

#about .section-title {
    color: var(--color-black) !important;
}

#about .lead,
#about p {
    color: var(--color-black) !important;
}

#about .stat-label {
    color: #666 !important;
}

.lead {
    color: inherit;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-muted);
    margin: 0;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--color-black);
    color: var(--color-white);
}

.footer h5 {
    color: var(--color-white);
    font-weight: 700;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
    display: inline-block;
    margin-bottom: 0.5rem;
}

.footer-link:hover {
    color: var(--color-orange);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-white);
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background: var(--color-orange);
    color: var(--color-white);
    transform: translateY(-3px);
}

/* ===== LIGHTBOX MODAL ===== */
.modal-content {
    background: rgba(17, 17, 17, 0.98);
    border: none;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
}

#lightboxImage {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 10px;
}

.lightbox-caption {
    color: var(--color-white);
    font-size: 1.2rem;
    font-weight: 500;
    margin-top: 1rem;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--color-white);
    font-size: 3rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.lightbox-nav:hover {
    background: var(--color-orange);
    transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

/* Modifica visualizzazione in dark mode raggruppata sopra tramite variabili */
body.dark-mode .btn-filter:hover,
body.dark-mode .btn-filter.active {
    background: var(--color-orange);
    border-color: var(--color-orange);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Mobile Small (< 576px) - 1 colonna */
@media (max-width: 575.98px) {
    .hero-section {
        height: clamp(60vh, 100vw, 70vh);
    }

    .card-img-top {
        height: 200px;
    }

    .lightbox-nav {
        width: 45px;
        height: 45px;
        font-size: 2rem;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    /* Ottimizzazione About per Mobile */
    #about {
        padding: 50px 0 !important;
        text-align: center;
    }

    .section-title::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .stats-grid {
        grid-template-columns: 1fr !important;
        /* Forza 1 colonna su mobile molto piccolo */
        gap: 1rem;
        margin-top: 3rem;
    }

    .stat-item {
        padding: 1.5rem 1rem;
    }
}

@media (max-width: 400px) {
    .stat-number {
        font-size: 2rem;
    }
}

/* Tablet (576px - 991px) - 2 colonne */
@media (min-width: 576px) and (max-width: 991.98px) {
    .card-img-top {
        height: 220px;
    }
}

/* Desktop (992px - 1199px) - 3 colonne */
@media (min-width: 992px) and (max-width: 1199.98px) {
    .card-img-top {
        height: 240px;
    }
}

/* Desktop Large (≥ 1200px) - 4 colonne */
@media (min-width: 1200px) {
    .card-img-top {
        height: 250px;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-clamp {
    font-size: clamp(1.2rem, 3vw, 2rem);
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection color */
::selection {
    background: var(--color-orange);
    color: var(--color-white);
}

::-moz-selection {
    background: var(--color-orange);
    color: var(--color-white);
}