:root {
    --green-100: #9EA729; 
    --green-200: #7d8500;
    --walnut-brown-100: #4C1E0B;
    --walnut-brown-900: #FFE6A9;
    --orange-100: #B23805;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'FiraSans-Regular', sans-serif;
    background-color: var(--walnut-brown-100);
    color: #333;
}

header {
    background-color: var(--walnut-brown-100);
    padding: 1.5rem 3rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    height: 80px;
}

.logoimg {
    height: 80px;
    width: auto;
    filter: brightness(1.1);
}

.nav-back {
    display: flex;
    align-items: center;
}

.back-link {
    color: var(--walnut-brown-900);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--walnut-brown-900);
    border-radius: 4px;
}

.back-link:hover {
    background-color: var(--orange-100);
    border-color: var(--orange-100);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.gallery-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 3rem;
    background-color: var(--green-100);
}

.gallery-title {
    font-size: 3rem;
    text-align: center;
    color: var(--walnut-brown-100);
    margin-bottom: 1rem;
    font-weight: 300;
    position: relative;
}

.gallery-title::after {
    content: '';
    display: block;
    width: 158px;
    height: 8px;
    background-color: var(--walnut-brown-100);
    margin: 30px auto;
}

.gallery-subtitle {
    text-align: center;
    color: var(--walnut-brown-100);
    font-size: 1.3rem;
    margin-bottom: 4rem;
    font-weight: 300;
}

.bento-grid {
    margin: 0 auto;
    max-width: 1400px;
}

.bento-item {
    width: calc(25% - 12px);
    margin-bottom: 15px;
    overflow: hidden;
    border-radius: 0;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background-color: var(--green-200);
    break-inside: avoid;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.bento-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.3);
}

.bento-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease, opacity 0.3s ease;
}

.bento-item:hover img {
    transform: scale(1.08);
}

.loading {
    text-align: center;
    padding: 4rem;
    font-size: 1.5rem;
    color: var(--walnut-brown-100);
    font-weight: 300;
}

/* Lightbox styles */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(76, 30, 11, 0.97);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: var(--walnut-brown-900);
    border: none;
    color: var(--walnut-brown-100);
    font-size: 2rem;
    cursor: pointer;
    z-index: 1001;
    line-height: 0;
    transition: all 0.2s ease;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.lightbox-close:hover {
    transform: scale(1.15) rotate(90deg);
    background-color: var(--orange-100);
    color: white;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(158, 167, 41, 0.3);
    border: 2px solid var(--walnut-brown-900);
    color: var(--walnut-brown-900);
    font-size: 3rem;
    cursor: pointer;
    padding: 0;
    width: 70px;
    height: 70px;
    transition: all 0.3s ease;
    z-index: 1001;
    line-height: 0;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-nav:hover {
    background: var(--green-100);
    transform: translateY(-50%) scale(1.1);
    border-color: var(--orange-100);
    color: var(--orange-100);
}

.lightbox-prev {
    left: 2rem;
}

.lightbox-next {
    right: 2rem;
}

#lightbox-img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    box-shadow: 0 0 80px rgba(0,0,0,0.8);
    border: 4px solid var(--walnut-brown-900);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

#lightbox-img.slide-left {
    animation: slideLeft 0.3s ease;
}

#lightbox-img.slide-right {
    animation: slideRight 0.3s ease;
}

@keyframes slideLeft {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideRight {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.lightbox-counter {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--walnut-brown-900);
    font-size: 1.3rem;
    background: var(--walnut-brown-100);
    padding: 0.75rem 2rem;
    border-radius: 4px;
    font-weight: 500;
    border: 2px solid var(--walnut-brown-900);
}

/* Mobile responsive */
@media screen and (max-width: 1200px) {
    .bento-item {
        width: calc(33.333% - 10px);
    }
}

@media screen and (max-width: 768px) {
    header {
        padding: 1rem 1.5rem;
    }

    .logoimg {
        height: 60px;
    }

    .logo {
        height: 60px;
    }

    .back-link {
        font-size: 0.9rem;
        padding: 0.5rem 1rem;
    }

    .gallery-container {
        padding: 2rem 1rem;
    }

    .gallery-title {
        font-size: 2rem;
    }

    .gallery-subtitle {
        font-size: 1.1rem;
    }

    .bento-item {
        width: calc(50% - 8px);
        margin-bottom: 10px;
    }

    .lightbox-nav {
        display: none;
    }

    .lightbox-prev {
        left: 0.5rem;
    }

    .lightbox-next {
        right: 0.5rem;
    }

    .lightbox-close {
        top: 1rem;
        right: 1rem;
        font-size: 2rem;
        width: 40px;
        height: 40px;
    }

    #lightbox-img {
        max-width: 95%;
        max-height: 80%;
    }

    .lightbox-counter {
        bottom: 1rem;
        font-size: 1rem;
        padding: 0.5rem 1.2rem;
    }
}

@media screen and (max-width: 480px) {
    .gallery-title {
        font-size: 1.5rem;
    }

    .gallery-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .gallery-title::after {
        width: 100px;
        height: 6px;
        margin: 20px auto;
    }
}