/* DESIGN SYSTEM & VARIABLES */
:root {
    --bg: #ede9e2;
    --text-primary: #1a1a18;
    --text-secondary: #7a7570;
    --accent: #1a1a18;
    --border: rgba(26, 26, 24, 0.1);
    --card-shadow: 0 2px 12px rgba(0,0,0,0.08);
    --card-radius: 12px;
    --font-sans: 'DM Sans', sans-serif;
    --font-display: 'DM Sans', sans-serif;
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    background-color: var(--bg);
}

/* HEADER */
#main-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2.5rem;
    background: transparent;
    border-bottom: 1px solid var(--border);
}

.header-name {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-primary);
}

.header-tagline {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

/* HERO */
#hero {
    padding: 5rem 2.5rem 4rem;
    max-width: 960px;
    text-align: center;
    margin: 0 auto;
}

.hero-headline {
    font-family: var(--font-display);
    font-size: clamp(4.5rem, 14vw, 10rem);
    font-weight: 700;
    font-style: normal;
    line-height: 0.92;
    color: var(--text-primary);
    letter-spacing: -0.04em;
    margin-bottom: 2rem;
    text-align: center;
}

.hero-links {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    margin: 1.5rem 0 0.75rem;
}

.hero-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.hero-link:hover {
    color: var(--bg);
    background: var(--text-primary);
    transform: translateY(-2px);
}

.hero-sub {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.8;
    text-align: center;
    letter-spacing: 0.01em;
}

/* DIVIDER */
.section-divider {
    width: calc(100% - 5rem);
    margin: 0 2.5rem;
    height: 1px;
    background: var(--border);
}

/* GALLERY SECTION */
#gallery-section {
    padding: 3rem 2.5rem 5rem;
}

.gallery-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.gallery-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    font-style: normal;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.gallery-count {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-secondary);
}

/* MASONRY GRID */
#masonry-grid {
    column-count: 8;
    column-gap: 12px;
}

@media (max-width: 1100px) {
    #masonry-grid { column-count: 6; }
}

@media (max-width: 700px) {
    #masonry-grid { column-count: 3; column-gap: 8px; }
    #gallery-section { padding: 2rem 1.2rem 4rem; }
    .section-divider { width: calc(100% - 2.4rem); margin: 0 1.2rem; }
    #main-header { padding: 1.5rem 1.2rem; }
    #hero { padding: 3rem 1.2rem 3rem; }
}

@media (max-width: 420px) {
    #masonry-grid { column-count: 3; column-gap: 6px; }
}

/* GRID ITEM */
.grid-item {
    display: inline-block;
    width: 100%;
    margin-bottom: 12px;
    break-inside: avoid;
    border-radius: var(--card-radius);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

@media (max-width: 700px) {
    .grid-item {
        margin-bottom: 8px;
        border-radius: 8px;
    }
}

.grid-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.14);
}

.grid-item img {
    width: 100%;
    display: block;
    height: auto;
    background: rgba(26, 26, 24, 0.04);
    opacity: 0;
    transform: translateY(12px) scale(0.99);
    transition: opacity 0.55s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}

.grid-item img.loaded {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .grid-item img {
        transition: none;
        transform: none;
        opacity: 1;
    }
}

/* LIGHTBOX */
.lightbox {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(237, 233, 226, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 1002;
}

.lightbox-close:hover {
    background: var(--text-primary);
    color: var(--bg);
    transform: rotate(90deg);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(237, 233, 226, 0.7);
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.25s ease, color 0.25s ease;
    z-index: 1002;
    flex-shrink: 0;
}

.lightbox-nav.prev { left: 1.5rem; }
.lightbox-nav.next { right: 1.5rem; }

.lightbox-nav:hover {
    background: var(--text-primary);
    color: var(--bg);
}

/* CAROUSEL (Instagram-style peek gallery) */
.carousel-track {
    display: flex;
    width: 100%;
    height: 80vh;
    align-items: center;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scrollbar-width: none;
    padding-inline: calc((100vw - min(82vw, 1000px)) / 2);
}

.carousel-track::-webkit-scrollbar { display: none; }

.carousel-slide {
    flex: 0 0 min(82vw, 1000px);
    height: 100%;
    scroll-snap-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 1.2vw;
    box-sizing: border-box;
    opacity: 0.4;
    transform: scale(0.85);
    transition: opacity 0.4s ease, transform 0.4s ease;
    cursor: pointer;
}

.carousel-slide.is-active {
    opacity: 1;
    transform: scale(1);
    cursor: default;
}

.carousel-slide img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.18);
    user-select: none;
    -webkit-user-drag: none;
}

@media (prefers-reduced-motion: reduce) {
    .carousel-track { scroll-behavior: auto; }
    .carousel-slide { transition: none; }
}

.lightbox-info {
    margin-top: 1.25rem;
    text-align: center;
    z-index: 1001;
}

.lightbox-counter {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.lightbox-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    font-style: normal;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.lightbox-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.72rem;
}

.meta-tag {
    background: rgba(26, 26, 24, 0.06);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hidden {
    display: none !important;
}

/* BACK TO TOP */
.back-to-top {
    position: fixed;
    bottom: 1.75rem;
    right: 1.75rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: rgba(237, 233, 226, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--card-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s, background 0.25s ease, color 0.25s ease;
    z-index: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--text-primary);
    color: var(--bg);
}

@media (max-width: 700px) {
    .back-to-top { bottom: 1.2rem; right: 1.2rem; }
}

/* FOOTER */
footer {
    text-align: center;
    padding: 2.5rem 0;
    color: var(--text-secondary);
    font-size: 0.65rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-top: 1px solid var(--border);
}

/* MOBILE LIGHTBOX */
@media (max-width: 700px) {
    .lightbox {
        padding: 0;
    }
    .lightbox-nav {
        display: none; /* mobilde parmakla kaydır */
    }
    .carousel-track {
        height: 72vh;
        padding-inline: calc((100vw - 88vw) / 2);
    }
    .carousel-slide {
        flex: 0 0 88vw;
        padding: 0 1vw;
    }
    .carousel-slide img {
        max-height: 72vh;
    }
}