:root {
    --bg-color: #050505;
    --text-primary: #f2f2f2;
    --text-secondary: #888888;
    --accent-color: #d4af37; /* Subtle gold accent */
    --hover-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-fast: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    
    --header-height: 90px;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 4vw;
    z-index: 1000;
    /* Glassmorphism */
    background: rgba(5, 5, 5, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: transform var(--transition-fast);
}

header.hidden {
    transform: translateY(-100%);
}

.logo a {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: 2px;
    line-height: 1.2;
    display: inline-block;
}

.logo .dot {
    color: var(--accent-color);
}

nav .nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color var(--transition-fast);
    position: relative;
    padding: 1rem 0 0.5rem 0;
}

nav a::before {
    content: '';
    position: absolute;
    top: 0px;
    left: 50%;
    transform: translateX(-50%) scale(0);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-color);
    transition: transform var(--transition-fast) cubic-bezier(0.175, 0.885, 0.32, 1.275); /* Sato "!" bounce */
}

nav a:hover, nav a.active {
    color: var(--text-primary);
}

nav a.active::before {
    transform: translateX(-50%) scale(1);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 1px;
    transition: color var(--transition-fast);
}

.social-links a:hover {
    color: var(--text-primary);
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.hamburger, .hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.mobile-nav-toggle.open .hamburger {
    background: transparent;
}

.mobile-nav-toggle.open .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-nav-toggle.open .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* Gallery Section */
.gallery-container {
    padding: calc(var(--header-height) + 40px) 4vw 6rem 4vw; /* Offset removed hero */
    min-height: 50vh;
    position: relative;
}

.gallery-container.hidden {
    display: none;
}

.gallery-grid {
    /* Masonry grid initialized via JS */
    width: 100%;
    opacity: 0; /* Fade in when loaded */
    transition: opacity var(--transition-slow);
}

.gallery-grid.loaded {
    opacity: 1;
}

.gallery-sizer,
.gallery-item {
    width: 33.333%; /* 3 columns by default */
    padding: 30px; /* Kawazoe: expanded whitespace */
}

.gallery-item {
    margin-bottom: 20px;
    transform: translateY(30px);
    opacity: 0;
    transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.gallery-item.visible {
    transform: translateY(0);
    opacity: 1;
}

.gallery-item-inner {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    background: #111;
    cursor: pointer;
}

.gallery-img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform var(--transition-slow), filter var(--transition-slow);
    /* Removed Ive Material critique: no starting grayscale distortion */
}

.gallery-item-inner:hover .gallery-img,
.gallery-item-inner.mobile-hover .gallery-img {
    transform: scale(1.02);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.gallery-item-inner:hover .gallery-overlay,
.gallery-item-inner.mobile-hover .gallery-overlay {
    opacity: 1;
}

.gallery-category-label {
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--text-primary);
    transform: translateY(10px);
    transition: transform var(--transition-fast);
}

.gallery-item-inner:hover .gallery-category-label,
.gallery-item-inner.mobile-hover .gallery-category-label {
    transform: translateY(0);
}

/* Loading & Empty states */
.loading-spinner {
    position: absolute;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
    display: none;
}

.loading-spinner.active {
    display: block;
}

@keyframes spin {
    to { transform: translateX(-50%) rotate(360deg); }
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 4rem 0;
    display: none;
    font-style: italic;
    font-family: var(--font-heading);
}

.empty-state.active {
    display: block;
}

.empty-state.glightbox-container {
    z-index: 9999 !important;
}

/* GLightbox Dark Theme Overrides */
.glightbox-clean .gslide-description {
    background: transparent !important;
    padding-bottom: 2rem !important;
}

.glightbox-clean .gdesc-inner {
    padding: 1rem 0 0 0 !important;
}

.glightbox-clean .gslide-title {
    color: var(--text-secondary) !important;
    font-family: var(--font-body) !important;
    font-size: 0.7rem !important;
    font-weight: 500 !important;
    text-transform: uppercase !important;
    letter-spacing: 2px !important;
    text-align: center;
}

/* About Section */
.about-section {
    padding: calc(var(--header-height) + 40px) 4vw 6rem 4vw;
    min-height: 50vh;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity var(--transition-slow);
}

.about-section.hidden {
    display: none;
    opacity: 0;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 4rem;
    max-width: 1000px;
    align-items: center;
}

.about-image {
    flex: 1;
    min-width: 300px;
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 4px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    filter: grayscale(20%);
    transition: filter var(--transition-slow);
}

.about-image:hover img {
    filter: grayscale(0%);
}

.about-image .caption {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 1rem;
    text-align: center;
    font-style: italic;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text h2 {
    font-family: var(--font-heading);
    font-size: 3rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

.dropcap {
    float: left;
    font-family: var(--font-heading);
    font-size: 4rem;
    line-height: 0.8;
    padding-top: 4px;
    padding-right: 8px;
    padding-left: 3px;
    color: var(--accent-color);
}

.simple-email-btn {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    border-radius: 40px;
    transition: all var(--transition-fast);
}

.simple-email-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: var(--hover-bg);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Media Queries */
@media screen and (max-width: 1024px) {
    .gallery-sizer,
    .gallery-item {
        width: 50%; /* 2 columns */
    }
}

@media screen and (max-width: 768px) {
    .social-links {
        display: none;
    }

    .mobile-nav-toggle {
        display: block;
    }

    nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(5, 5, 5, 0.98);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        transform: translateY(-100%);
        transition: transform var(--transition-slow);
        z-index: 1000;
    }

    nav.open {
        transform: translateY(0);
    }

    nav .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 2.5rem;
    }

    nav a {
        font-size: 1.5rem;
        font-family: var(--font-heading);
    }
    
    .gallery-sizer,
    .gallery-item {
        width: 100%; /* 1 column */
        padding: 5px;
    }

    /* Force mobile hover states visible permanently */
    .gallery-overlay {
        opacity: 1 !important;
        background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 40%);
    }

    .gallery-category-label {
        transform: translateY(0) !important;
    }
}