/* ================================================
   MOTHERPAGES.CSS - Modern Grid Layout
   Per: kids-editorial, kids-adv, product-adv, etc.
   ================================================ */

/* Basic Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    background: #FFFFFF;
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ================================================
   HEADER - Fixed top (stesso di gallery)
   ================================================ */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    padding: 15px 30px;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
}

.logo-holder img {
    height: 50px;
    width: auto;
}

.nav-holder nav ul {
    display: flex;
    list-style: none;
    gap: 24px;
    margin: 0;
    padding: 0;
}

.nav-holder nav ul li a {
    text-decoration: none;
    color: #888;
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.3s ease;
    position: relative;
    padding: 8px 0;
    white-space: nowrap;
}

.nav-holder nav ul li a.act-link {
    padding: 8px 12px;
    margin: -8px -12px;
}

.nav-holder nav ul li a.act-link:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #d0d0d0;
    transition: all 160ms linear;
    z-index: -1;
}

.nav-holder nav ul li a:hover {
    color: #000;
}

.nav-holder nav ul li a.act-link:hover {
    color: #ccc;
}

.nav-holder nav ul li a.act-link:hover:before {
    height: 0;
}

/* ================================================
   CONTENT CONTAINER
   ================================================ */
.content-holder {
    padding-top: 90px;
    padding-bottom: 80px;
    min-height: 100vh;
}

.container {
    max-width: 1600px;
    width: 92%;
    margin: 0 auto;
    padding: 40px 0;
}

/* ================================================
   GALLERY GRID - CSS Grid Layout
   ================================================ */
.gallery-items {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    width: 100%;
}

/* Grid item sizing */
.gallery-item {
    position: relative;
}

/* Standard item: 1 column */
.gallery-item {
    grid-column: span 1;
}

/* Large item: 2 columns */
.gallery-item-second {
    grid-column: span 2;
}

/* Extra large item: 3 columns */
.gallery-item-three {
    grid-column: span 3;
}

/* ================================================
   GALLERY ITEM STRUCTURE
   ================================================ */
.grid-item-holder {
    position: relative;
    width: 100%;
    height: 100%;
}

.box-item {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: #000;
}

.box-item a {
    display: block;
    position: relative;
    overflow: hidden;
}

.box-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 4s cubic-bezier(.19,1,.22,1);
}

/* Overlay scuro */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    opacity: 0;
    transition: opacity 200ms linear;
    z-index: 2;
}

/* ================================================
   GRID ITEM INFO (titolo e sottotitolo)
   ================================================ */
.grid-item {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    transform: translateY(-50%);
    text-align: center;
    z-index: 3;
    pointer-events: none;
}

.grid-item h3 {
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
    opacity: 0;
    transition: opacity 300ms linear;
}

.grid-item h3 a {
    color: #fff;
    text-decoration: none;
    pointer-events: auto;
}

.grid-item span {
    font-size: 14px;
    color: #fff;
    opacity: 0;
    transition: opacity 300ms linear;
}

/* Linee decorative verticali */
.grid-item:before,
.grid-item:after {
    content: '';
    position: absolute;
    left: 50%;
    width: 1px;
    height: 0;
    background: rgba(255, 255, 255, 0.5);
    transition: height 300ms linear;
}

.grid-item:before {
    bottom: 100%;
    margin-bottom: 10px;
}

.grid-item:after {
    top: 100%;
    margin-top: 10px;
}

/* ================================================
   HOVER EFFECTS
   ================================================ */
.grid-item-holder:hover .overlay {
    opacity: 0.5;
}

.grid-item-holder:hover img {
    transform: scale(1.05);
}

.grid-item-holder:hover .grid-item h3,
.grid-item-holder:hover .grid-item span {
    opacity: 1;
}

.grid-item-holder:hover .grid-item:before,
.grid-item-holder:hover .grid-item:after {
    height: 40px;
}

/* ================================================
   FOOTER
   ================================================ */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    padding: 20px 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
}

.copyright {
    font-size: 10px;
    color: #aaa;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ================================================
   RESPONSIVE - TABLET
   ================================================ */
@media only screen and (max-width: 1024px) {
    .gallery-items {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
    
    .gallery-item-three {
        grid-column: span 2;
    }
}

/* ================================================
   RESPONSIVE - MOBILE
   max-width: 940px OR max-height: 600px
   ================================================ */

/* Hamburger menu (hidden on desktop) */
.hamburger {
    display: none;
}

@media only screen and (max-width: 940px), 
       only screen and (max-height: 600px) {
    
    /* Hide logo and copyright */
    .logo-holder {
        display: none;
    }
    
    footer {
        display: none;
    }
    
    /* Show hamburger */
    .hamburger {
        display: flex;
        flex-direction: column;
        gap: 6px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 8px;
        position: fixed;
        top: 15px;
        right: 20px;
        z-index: 1002;
    }
    
    .hamburger span {
        width: 35px;
        height: 5px;
        background: #666;
        transition: all 0.2s ease;
    }
    
    .hamburger:hover span {
        background: #000;
    }
    
    /* Hamburger animation when open */
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* Header transparent */
    header {
        background: transparent;
        padding: 0;
    }
    
    .header-inner {
        display: block;
    }
    
    /* Navigation overlay fullscreen */
    .nav-holder {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: auto;
        overflow-y: auto;
        background: rgba(255, 255, 255, 0.98);
        display: flex;
        justify-content: center;
        align-items: center;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
        z-index: 1000;
    }
    
    .nav-holder.active {
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-holder nav ul {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .nav-holder nav ul li a {
        font-size: 16px;
    }
    
    .nav-holder nav ul li a:hover {
        color: #000;
    }
    
    /* Content adjustments */
    .content-holder {
        padding-top: 60px;
        padding-bottom: 20px;
    }
    
    .container {
        width: 95%;
        padding: 20px 0;
    }
    
    /* Gallery grid mobile */
    .gallery-items {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .gallery-item-second,
    .gallery-item-three {
        grid-column: span 2;
    }
    
    .grid-item h3 {
        font-size: 11px;
    }
    
    .grid-item span {
        font-size: 12px;
    }
}

@media only screen and (max-width: 480px) {
    .gallery-items {
        grid-template-columns: 1fr;
    }
    
    .gallery-item,
    .gallery-item-second,
    .gallery-item-three {
        grid-column: span 1;
    }
}