/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*::before,
*::after {
    box-sizing: border-box;
}

:root {
    --header-height: 80px;
    --text-color: #000;
    --bg-color: #fff;
    --transition-speed: 0.6s;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background: var(--bg-color);
    overflow-x: hidden;
    width: 100%;
    position: relative;
    transition: background-color var(--transition-speed) ease;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

body.is-light {
    --text-color: #000;
}

body.is-dark {
    --text-color: #fff;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    padding: 0 3vw;
    display: flex;
    align-items: center;
    mix-blend-mode: difference;
}

.header-inner {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    color: #fff;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 40px;
    width: auto;
    transition: opacity 0.3s ease;
    filter: brightness(0) invert(1);
}

.logo-text {
    font-family: 'Cinzel', serif;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.site-title:hover .logo-img {
    opacity: 0.7;
}

.header-nav {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-size: 14px;
    font-weight: 400;
    text-decoration: none;
    color: #fff;
    letter-spacing: 0.3px;
    transition: opacity 0.3s ease;
}

.menu-trigger {
    font-family: 'Cinzel', serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    padding: 12px 32px;
    background: linear-gradient(135deg, rgba(212, 165, 116, 0.15), rgba(192, 133, 82, 0.15));
    border: 2px solid rgba(212, 165, 116, 0.8);
    border-radius: 0;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 0 20px rgba(212, 165, 116, 0.3), inset 0 0 20px rgba(212, 165, 116, 0.1);
}

.menu-trigger::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 165, 116, 0.4), transparent);
    transition: left 0.5s;
}

.menu-trigger:hover::before {
    left: 100%;
}

.menu-trigger:hover {
    background: linear-gradient(135deg, rgba(212, 165, 116, 0.3), rgba(192, 133, 82, 0.3));
    border-color: rgba(212, 165, 116, 1);
    box-shadow: 0 0 30px rgba(212, 165, 116, 0.6), inset 0 0 30px rgba(212, 165, 116, 0.2);
    transform: translateY(-2px);
}

.nav-link:hover {
    opacity: 0.6;
}

/* Intro Section */
.intro {
    min-height: 100vh;
    padding: calc(var(--header-height) + 60px) 3vw 60px;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.intro-item {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
}

.intro-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}

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

/* Portfolio List - Parallax Section */
.portfolio-list {
    position: relative;
}

.portfolio-item {
    height: 100vh;
    position: relative;
    overflow: hidden;
}

.portfolio-item-inner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 10vw;
}

.portfolio-item-image-wrapper {
    position: relative;
    width: 80%;
    max-width: 1000px;
    height: 70vh;
    will-change: transform;
}

.portfolio-item-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.portfolio-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    will-change: transform;
    transform: scale(1.2);
}

/* Parallax Title Overlay */
.parallax-title-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 100;
    pointer-events: none;
    width: 90%;
    max-width: 1400px;
    text-align: center;
}

.parallax-title {
    font-size: clamp(32px, 7vw, 100px);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    text-transform: uppercase;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out, color 0.3s ease;
    will-change: opacity, transform;
    white-space: normal;
    word-break: break-word;
}

.parallax-title--front {
    mix-blend-mode: difference;
    z-index: 2;
}

.parallax-title--back {
    color: rgba(0, 0, 0, 0.03);
    z-index: 1;
}

.parallax-title.active {
    opacity: 1;
    transform: translateY(0);
}

/* Scroll Number Indicator */
.scroll-number-container {
    position: fixed;
    bottom: 40px;
    right: 3vw;
    z-index: 100;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    mix-blend-mode: difference;
    pointer-events: none;
}

.scroll-number {
    position: absolute;
    top: 0;
    right: 0;
    color: #fff;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.scroll-number.active {
    opacity: 1;
}

.scroll-number-value::before {
    content: '00';
}

.scroll-number-value {
    font-variant-numeric: tabular-nums;
}

/* Menu Overlay */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
    overflow-y: auto;
}

.menu-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.menu-close {
    position: fixed;
    top: 30px;
    right: 3vw;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
    z-index: 2001;
    line-height: 1;
    transition: transform 0.3s ease;
}

.menu-close:hover {
    transform: rotate(90deg);
}

.menu-content {
    padding: 120px 3vw 60px;
    max-width: 1400px;
    margin: 0 auto;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 40px;
}

.menu-item {
    position: relative;
    aspect-ratio: 3/4;
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.menu-item-image {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.menu-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.19, 1, 0.22, 1);
    opacity: 0;
}

.menu-item-image img.loaded {
    opacity: 1;
}

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

.menu-item-title {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    mix-blend-mode: difference;
}

.menu-item-number {
    position: absolute;
    top: 20px;
    right: 20px;
    color: #fff;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0.5px;
    mix-blend-mode: difference;
}

/* About Section */
.about-section {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #f1f1f1;
    z-index: 1500;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.about-section.active {
    opacity: 1;
    pointer-events: all;
}

.about-close {
    position: fixed;
    top: 30px;
    right: 3vw;
    font-size: 40px;
    color: #000;
    cursor: pointer;
    z-index: 1501;
    line-height: 1;
    transition: transform 0.3s ease;
}

.about-close:hover {
    transform: rotate(90deg);
}

.about-content {
    position: relative;
    z-index: 2;
    padding: 120px 3vw;
    max-width: 800px;
    margin: 0 auto;
}

.about-content h2 {
    font-size: clamp(40px, 6vw, 80px);
    font-weight: 700;
    margin-bottom: 40px;
    letter-spacing: -0.02em;
}

.about-content p {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.about-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    z-index: 1;
}

.about-bg video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Responsive */
@media (max-width: 768px) {
    .header-nav {
        gap: 15px;
        font-size: 12px;
    }
    
    .logo-img {
        height: 35px;
    }
    
    .logo-text {
        font-size: 12px;
    }
    
    .intro-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .menu-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .portfolio-item-image-wrapper {
        width: 90%;
        height: 65vh;
    }
    
    .parallax-title {
        font-size: clamp(28px, 8vw, 55px);
    }
    
    .scroll-number {
        font-size: 13px;
        bottom: 30px;
        right: 15px;
    }
}

@media (max-width: 480px) {
    .header-nav {
        gap: 10px;
    }
    
    .nav-link {
        font-size: 11px;
    }
    
    .intro-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .parallax-title {
        font-size: clamp(22px, 7vw, 40px);
        padding: 0 10px;
    }
    
    .portfolio-item-image-wrapper {
        width: 95%;
        height: 55vh;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .menu-item:hover,
    .nav-link:hover {
        transform: none;
    }
    
    .menu-item:active {
        transform: scale(0.98);
    }
}

/* Loading State */
img[data-src] {
    opacity: 0;
    transition: opacity 0.4s ease;
}

img.loaded {
    opacity: 1;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Hide Scrollbar but keep functionality */
body::-webkit-scrollbar {
    width: 0px;
    background: transparent;
}

/* Performance Optimizations */
.portfolio-item-image,
.portfolio-item-image img {
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}