:root {
    --bg-color: #000;
    --text-color: #fff;
    --header-bg: rgba(0, 0, 0, 0.8);
    --thumb-bg: #222;
    --lightbox-bg: #000;
    --toolbar-bg: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent);
    --btn-hover: rgba(255,255,255,0.1);
    --nav-bg: rgba(0, 0, 0, 0.3);
    --nav-hover: rgba(0, 0, 0, 0.6);
}

[data-theme="light"] {
    --bg-color: #f5f5f5;
    --text-color: #111;
    --header-bg: rgba(255, 255, 255, 0.8);
    --thumb-bg: #e0e0e0;
    --lightbox-bg: rgba(255, 255, 255, 0.95);
    --toolbar-bg: linear-gradient(to bottom, rgba(255,255,255,0.8), transparent);
    --btn-hover: rgba(0,0,0,0.1);
    --nav-bg: rgba(255, 255, 255, 0.5);
    --nav-hover: rgba(255, 255, 255, 0.8);
}

/* Logo switching */
/* Removed CSS toggling since we use a single img tag updated by JS to prevent layout shifts */

/* Theme icon switching */
#sun-icon { display: block !important; }
#moon-icon { display: none !important; }
[data-theme="light"] #sun-icon { display: none !important; }
[data-theme="light"] #moon-icon { display: block !important; }

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

.header {
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 10;
    border-bottom: 1px solid var(--btn-hover);
}

.logo {
    height: 32px;
    width: auto;
    content: url('assets/logo/logo_dark.svg');
}

[data-theme="light"] .logo {
    content: url('assets/logo/logo_light.svg');
}

.header h1 {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin: 0;
    flex: 1;
    text-align: center;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.theme-toggle:hover {
    background-color: var(--btn-hover);
}

/* Grid for thumbnails */
.grid-container {
    display: grid;
    /* Su mobile forza 2 colonne */
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 15px;
    max-width: 1300px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .grid-container {
        /* Su schermi grandi, griglia dinamica (circa 3 per riga) */
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 30px;
        padding: 30px;
    }
}

/* Thumbnail Grid items */
.thumb-wrapper {
    position: relative;
    aspect-ratio: 1 / 1;
    background-color: #f2f2f2;
    border-radius: 12px;
    padding: 20px; /* Margine interno ridotto per far sembrare l'immagine più grande */
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.thumb-wrapper:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.thumb-wrapper a {
    display: block;
    width: 100%;
    height: 100%;
}

.thumb-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* Prevents cropping, scales image to fit inside */
    transition: transform 0.5s ease;
}

.thumb-wrapper:hover img {
    transform: scale(1.05);
}

/* Filter Navigation */
.filters-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    flex-wrap: wrap;
}

.mobile-filter-container {
    text-align: center;
    padding: 15px;
}

/* Custom Dropdown Styling */
.custom-select-wrapper {
    position: relative;
    width: 80%;
    max-width: 300px;
    margin: 0 auto;
    user-select: none;
    z-index: 100;
}

.custom-select {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    border-radius: 25px;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 2px solid var(--text-color);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
}

.custom-select:hover {
    background-color: var(--btn-hover);
}

/* Arrow */
.custom-select::after {
    content: '';
    width: 14px;
    height: 14px;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23ffffff%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-size: contain;
    transition: transform 0.3s ease;
}

[data-theme="light"] .custom-select::after {
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23111111%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
}

.custom-select.open::after {
    transform: rotate(180deg);
}

.custom-options {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background-color: var(--bg-color);
    border: 2px solid var(--text-color);
    border-radius: 15px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.custom-select-wrapper.open .custom-options {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.custom-option {
    padding: 12px 20px;
    font-size: 0.95rem;
    font-weight: 500;
    text-transform: uppercase;
    cursor: pointer;
    transition: background-color 0.2s;
    border-bottom: 1px solid rgba(128, 128, 128, 0.2);
}

.custom-option:last-child {
    border-bottom: none;
}

.custom-option:hover, .custom-option.selected {
    background-color: var(--text-color);
    color: var(--bg-color);
}

@media (min-width: 768px) {
    .filters-container {
        display: flex !important;
    }
    .mobile-filter-container {
        display: none !important;
    }
}

@media (max-width: 767px) {
    .filters-container {
        display: none !important;
    }
    .mobile-filter-container {
        display: block !important;
    }
}
.filters-container::-webkit-scrollbar {
    display: none; /* Safari/Chrome */
}

.filter-btn {
    background-color: transparent;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.filter-btn:hover {
    background-color: rgba(128, 128, 128, 0.1);
}

.filter-btn.active {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Hidden class for thumbnails */
.thumb-wrapper.hidden {
    display: none !important;
}

/* Loader */
#loader-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
    transition: opacity 0.8s ease-out 0.7s, visibility 0.8s ease-out 0.7s;
}

html.skip-loader #loader-wrapper {
    display: none !important;
}

.loader-logo-wrapper {
    display: inline-block;
}

.loader-logo {
    width: 100px;
    height: auto;
    animation: pulseRotate 3s cubic-bezier(0.85, 0, 0.15, 1) infinite;
}

@keyframes pulseRotate {
    0% { transform: scale(1) rotate(0deg); opacity: 0.85; }
    50% { transform: scale(1.05) rotate(360deg); opacity: 1; }
    100% { transform: scale(1) rotate(720deg); opacity: 0.85; }
}

body.loaded #loader-wrapper {
    opacity: 0;
    visibility: hidden;
}

body.loaded .loader-logo-wrapper {
    animation: shrinkOut 0.9s ease-in forwards;
}

@keyframes shrinkOut {
    0% { transform: scale(1) rotate(0deg); opacity: 1; }
    25% { transform: scale(1.4) rotate(90deg); opacity: 1; }
    100% { transform: scale(0) rotate(720deg); opacity: 0; }
}

/* Ensure transparent PNGs opened in PhotoSwipe have the same background as thumbnails */
.pswp__img {
    background-color: #f2f2f2 !important;
    object-fit: contain !important;
}