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

/* ===== Light mode (default) ===== */
:root {
    --bg: #fafafa;
    --text: #1a1a1a;
    --text-dim: #666;
    --accent: #e94560;
    --card-bg: #ffffff;
    --border: rgba(0, 0, 0, 0.08);
}

/* ===== Dark mode ===== */
[data-theme="dark"] {
    --bg: #0c0c0c;
    --text: #f0f0f0;
    --text-dim: #888;
    --accent: #e94560;
    --card-bg: #161616;
    --border: rgba(255, 255, 255, 0.08);
}

html {
    scroll-behavior: auto;
}

body {
    font-family: 'Segoe UI', 'Malgun Gothic', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    overflow-x: hidden;
    cursor: none;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ===== Custom Cursor ===== */
.cursor {
    position: fixed;
    top: 0;
    left: 0;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: difference;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.cursor.hover {
    width: 60px;
    height: 60px;
}

/* ===== Navigation ===== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.2rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    background: color-mix(in srgb, var(--bg) 78%, transparent);
    -webkit-backdrop-filter: blur(14px) saturate(180%);
    backdrop-filter: blur(14px) saturate(180%);
    border-bottom: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}

.nav-brand {
    font-family: 'Pretendard Variable', Pretendard, -apple-system, sans-serif;
    font-size: 1.05rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.nav-brand:hover { opacity: 0.7; }

.nav-menu {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    position: relative;
    font-family: 'Pretendard Variable', Pretendard, sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text);
    text-decoration: none;
    padding: 0.3rem 0;
    transition: color 0.2s ease;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: right center;
    transition: transform 0.3s ease;
}

.nav-menu a:hover { color: var(--accent); }
.nav-menu a:hover::after { transform: scaleX(1); transform-origin: left center; }

/* ===== Top-right controls (theme + lang) ===== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--text);
    color: var(--bg);
    border: 1px solid var(--text);
    border-radius: 50%;
    cursor: none;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: opacity 0.35s ease, transform 0.35s ease, background 0.25s ease, color 0.25s ease;
}

.scroll-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.scroll-top:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-3px);
}

.scroll-top svg {
    width: 18px;
    height: 18px;
}

@media (max-width: 768px) {
    .scroll-top {
        width: 40px;
        height: 40px;
        bottom: 1.2rem;
        right: 1.2rem;
    }
    .scroll-top svg { width: 16px; height: 16px; }
}

.top-controls {
    position: fixed;
    top: 1.5rem;
    right: 3rem;
    z-index: 200;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle,
.lang-toggle {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    padding: 0.4rem 0.7rem;
    font-size: 0.75rem;
    cursor: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    font-family: inherit;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover,
.lang-toggle:hover {
    background: var(--text);
    color: var(--bg);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

/* Show/hide sun/moon icons based on theme */
.icon-sun { display: none; }
.icon-moon { display: block; }

[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* ===== Hero Section ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6rem 3rem;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.hero-vanta {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: auto;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background:
        radial-gradient(ellipse at 50% 40%, transparent 0%, rgba(8,10,22,0.35) 55%, rgba(8,10,22,0.75) 100%),
        linear-gradient(180deg, rgba(8,10,22,0.15) 0%, rgba(8,10,22,0.55) 100%);
}

[data-theme="light"] .hero-overlay {
    background:
        radial-gradient(ellipse at 50% 40%, transparent 0%, rgba(250,250,252,0.25) 55%, rgba(250,250,252,0.7) 100%),
        linear-gradient(180deg, rgba(250,250,252,0.15) 0%, rgba(250,250,252,0.55) 100%);
}

.hero-inner {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    max-width: 960px;
    width: 100%;
    pointer-events: none;
}

.hero-inner > * { pointer-events: auto; }

.hero-eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    padding: 0.45rem 0.9rem;
    border: 1px solid currentColor;
    border-radius: 999px;
    opacity: 0.85;
    color: var(--text);
    backdrop-filter: blur(6px);
    background: rgba(255,255,255,0.04);
}

[data-theme="light"] .hero-eyebrow {
    background: rgba(255,255,255,0.55);
}

.hero-title {
    font-family: 'KoPubWorldBatang', 'Noto Serif KR', 'Gowun Batang', serif;
    font-size: clamp(1.7rem, 3.6vw, 3rem);
    font-weight: 900;
    line-height: 1.35;
    text-align: center;
    max-width: 820px;
    letter-spacing: -0.015em;
    color: var(--text);
    text-shadow: 0 2px 40px rgba(0,0,0,0.35);
    opacity: 0;
}

[data-theme="light"] .hero-title {
    text-shadow: 0 2px 30px rgba(255,255,255,0.6);
}

.hero-subtitle {
    font-size: clamp(0.95rem, 1.6vw, 1.15rem);
    font-weight: 400;
    color: var(--text);
    text-align: center;
    max-width: 720px;
    line-height: 1.85;
    margin-top: 0.5rem;
    opacity: 0;
}

.hero-cta-row {
    display: flex;
    gap: 0.9rem;
    margin-top: 1.2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.6rem;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 999px;
    transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
    will-change: transform;
}

.hero-cta.primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 10px 30px rgba(233,69,96,0.35);
}

.hero-cta.primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(233,69,96,0.45); }

.hero-cta.ghost {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.35);
    color: var(--text);
    backdrop-filter: blur(8px);
}

[data-theme="light"] .hero-cta.ghost {
    background: rgba(255,255,255,0.6);
    border-color: rgba(0,0,0,0.15);
}

.hero-cta.ghost:hover { transform: translateY(-2px); background: rgba(255,255,255,0.14); }
[data-theme="light"] .hero-cta.ghost:hover { background: rgba(255,255,255,0.85); }

.hero-stats {
    list-style: none;
    padding: 0;
    margin: 2.2rem 0 0;
    display: flex;
    gap: 2.4rem;
    flex-wrap: wrap;
    justify-content: center;
    opacity: 0.9;
}

.hero-stats li {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}

.hero-stats strong {
    font-size: clamp(1.4rem, 2.6vw, 2rem);
    font-weight: 600;
    color: var(--accent);
    letter-spacing: -0.02em;
}

.hero-stats span {
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    opacity: 0;
}

.scroll-indicator span {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.3; transform: scaleY(0.5); }
}

/* ===== About Section ===== */
.about-section {
    padding: 8rem 3rem;
    max-width: 1280px;
    margin: 0 auto;
    position: relative;
    text-align: center;
}

.about-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: left;
    opacity: 0;
}

.about-body {
    font-size: 1.02rem;
    line-height: 1.95;
    color: var(--text-dim);
    margin: 0 0 2rem;
    word-break: keep-all;
}

.about-signature {
    font-family: 'KoPubWorldBatang', 'Noto Serif KR', serif;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text);
    letter-spacing: 0.04em;
    text-align: right;
}

.capabilities {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    margin-top: 6rem;
    background: var(--border, rgba(128,128,128,0.18));
    border: 1px solid var(--border, rgba(128,128,128,0.18));
    border-radius: 4px;
    overflow: hidden;
    opacity: 0;
}

.capabilities .cap {
    padding: 2rem 1.4rem;
    background: var(--card-bg);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    transition: background 0.3s ease, transform 0.3s ease;
}

.capabilities .cap:hover {
    background: var(--bg);
    transform: translateY(-3px);
}

.capabilities .cap strong {
    font-family: 'Pretendard Variable', Pretendard, sans-serif;
    font-weight: 900;
    font-size: 1.05rem;
    letter-spacing: 0.02em;
    color: var(--text);
}

.capabilities .cap span {
    font-size: 0.78rem;
    color: var(--text-dim);
    letter-spacing: 0.02em;
    line-height: 1.5;
}

/* ===== 9 Principles — GSAP pinned scroll ===== */
.principles-section {
    position: relative;
    background: linear-gradient(180deg, transparent 0%, rgba(128,128,128,0.04) 20%, rgba(128,128,128,0.04) 80%, transparent 100%);
}

.principles-section .section-title {
    padding-top: 7rem;
}

.principles-section .section-subtitle {
    margin-bottom: 3rem;
}

.principles-pin-wrap {
    position: relative;
    /* outer height controls pin duration — set by JS or leave tall enough */
}

.principles-sticky {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.principle-bg-number {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Pretendard Variable', Pretendard, sans-serif;
    font-weight: 900;
    font-size: clamp(18rem, 48vw, 44rem);
    line-height: 0.85;
    letter-spacing: -0.05em;
    color: var(--text);
    opacity: 0.04;
    pointer-events: none;
    user-select: none;
    z-index: 0;
    will-change: transform;
}

.principle-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(180px, 0.55fr) 1.2fr;
    gap: 3rem;
    max-width: 1280px;
    width: 100%;
    padding: 0 3rem;
    align-items: center;
}

.principle-number-col {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.principle-counter {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    font-family: 'Pretendard Variable', Pretendard, sans-serif;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 0.9;
}

.counter-current {
    font-size: clamp(5rem, 10vw, 9rem);
    background: linear-gradient(135deg, var(--accent) 0%, #7cf9ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    min-width: 2.2ch;
}

.counter-total {
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    color: var(--text-dim);
    font-weight: 700;
}

.principle-text-col {
    position: relative;
    min-height: 260px;
}

.principle-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.5s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: none;
    will-change: transform, opacity;
}

.principle-slide.is-active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.principle-index {
    font-family: 'Pretendard Variable', Pretendard, sans-serif;
    font-size: 0.7rem;
    font-weight: 900;
    letter-spacing: 0.28em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid currentColor;
    display: inline-block;
}

.principle-heading {
    font-family: 'KoPubWorldBatang', 'Noto Serif KR', serif;
    font-weight: 900;
    font-size: clamp(1.8rem, 4vw, 3rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text);
    margin: 0 0 1.2rem;
}

.principle-body {
    font-size: clamp(0.95rem, 1.3vw, 1.1rem);
    line-height: 1.75;
    color: var(--text-dim);
    max-width: 560px;
    margin: 0;
}

.principle-progress {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: min(1100px, 85%);
    z-index: 2;
}

.principle-progress-fill {
    height: 2px;
    background: linear-gradient(90deg, var(--accent), #7cf9ff);
    width: 0%;
    transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    border-radius: 2px;
}

.principle-dots {
    display: flex;
    justify-content: space-between;
    margin-top: 0.9rem;
}

.principle-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-dim);
    opacity: 0.3;
    transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
}

.principle-dot.is-active {
    opacity: 1;
    transform: scale(1.5);
    background: var(--accent);
}

.principle-controls {
    position: absolute;
    top: 5rem;
    right: 3rem;
    display: flex;
    gap: 0.6rem;
    z-index: 3;
}

.principle-autoplay,
.principle-skip {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.55rem 0.95rem;
    font-family: inherit;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text);
    background: transparent;
    border: 1px solid var(--border, rgba(128,128,128,0.28));
    border-radius: 999px;
    cursor: none;
    transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.principle-autoplay:hover,
.principle-skip:hover {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
    transform: translateY(-1px);
}

.principle-autoplay .icon-play,
.principle-autoplay .icon-pause {
    transition: opacity 0.2s ease;
}

.principle-autoplay .icon-play { display: none; }
.principle-autoplay.is-playing .icon-play { display: none; }
.principle-autoplay.is-playing .icon-pause { display: block; }
.principle-autoplay:not(.is-playing) .icon-play { display: block; }
.principle-autoplay:not(.is-playing) .icon-pause { display: none; }

.principle-skip svg {
    transition: transform 0.25s ease;
}
.principle-skip:hover svg { transform: translateX(3px); }

@media (max-width: 768px) {
    .principle-controls {
        top: 4rem;
        right: 1.5rem;
        gap: 0.4rem;
    }
    .principle-autoplay,
    .principle-skip {
        padding: 0.45rem 0.75rem;
        font-size: 0.65rem;
    }
    .principle-autoplay .autoplay-label { display: none; }
}

@media (max-width: 900px) {
    .principles-intro { padding: 5rem 1.5rem 2rem; }
    .principle-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 0 1.5rem;
    }
    .principle-text-col { min-height: 220px; }
    .principle-heading { font-size: clamp(1.4rem, 5.5vw, 2rem); }
    .principle-body { font-size: 0.95rem; }
    .principle-progress { bottom: 1.5rem; }
    .principle-bg-number { font-size: clamp(14rem, 70vw, 28rem); opacity: 0.05; }
}

/* ===== Extra Content Sections ===== */
.extra-content-section {
    padding: 6rem 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.extra-content-body {
    opacity: 0;
}

.extra-content-text {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-dim);
    text-align: center;
}

/* ===== Category Filter ===== */
.category-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2.5rem;
    opacity: 0;
}

.filter-btn {
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 0.45rem 1.2rem;
    font-size: 0.8rem;
    font-family: inherit;
    font-weight: 500;
    letter-spacing: 0.04em;
    border-radius: 50px;
    cursor: none;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    color: var(--text);
    border-color: var(--text);
}

.filter-btn.active {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

/* ===== Section Title ===== */
.section-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    line-height: 1;
    margin-bottom: 3rem;
    color: var(--text);
    text-align: center;
    opacity: 0;
}

.section-subtitle {
    font-size: clamp(0.85rem, 1.5vw, 1.05rem);
    font-weight: 400;
    font-style: italic;
    color: var(--text-dim);
    text-align: center;
    letter-spacing: 0.02em;
    line-height: 1.6;
    margin-top: -2rem;
    margin-bottom: 3rem;
    opacity: 0;
}

/* ===== Portfolio Section (Slider) ===== */
.portfolio-section {
    padding: 8rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.portfolio-section .section-title,
.portfolio-section .category-filter {
    padding: 0 3rem;
}

/* ===== Slider ===== */
.slider-viewport {
    width: 100%;
    overflow: hidden;
    padding: 2rem 0;
    cursor: grab;
}

.slider-viewport.dragging {
    cursor: grabbing;
}

.slider-track {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 0;
    will-change: transform;
}

.slider-item {
    flex: 0 0 440px;
    position: relative;
    cursor: none;
    filter: grayscale(1);
    opacity: 0.4;
    will-change: transform, filter, opacity;
}

.slider-item.active {
    filter: grayscale(0);
    opacity: 1;
}

.slider-image-wrap {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--card-bg);
}

.slider-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.slider-item.active .slider-img:hover {
    transform: scale(1.04);
}

/* Label below slide */
.slider-item-label {
    padding: 1rem 0.5rem 0;
    text-align: center;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s, transform 0.4s;
}

.slider-item.active .slider-item-label {
    opacity: 1;
    transform: translateY(0);
}

.slider-item-category {
    display: block;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.slider-item-title {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

/* ===== Slider Navigation ===== */
.slider-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 2rem;
    padding: 0 3rem;
}

.slider-arrow {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: none;
    transition: all 0.3s ease;
}

.slider-arrow:hover {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

.slider-counter {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    font-variant-numeric: tabular-nums;
    min-width: 60px;
    text-align: center;
}

.slider-current { color: var(--text); }
.slider-divider { color: var(--text-dim); margin: 0 0.2rem; }
.slider-total { color: var(--text-dim); }

/* Progress bar */
.slider-progress {
    width: 200px;
    height: 2px;
    background: var(--border);
    margin: 1.5rem auto 0;
    border-radius: 1px;
    overflow: hidden;
}

.slider-progress-bar {
    height: 100%;
    background: var(--accent);
    width: 0%;
    border-radius: 1px;
}

/* Pause button */
.slider-pause-wrap {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.slider-pause {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: none;
    transition: all 0.3s ease;
}

.slider-pause:hover {
    color: var(--text);
    border-color: var(--text);
}

.slider-pause .icon-play { display: none; }
.slider-pause.paused .icon-pause { display: none; }
.slider-pause.paused .icon-play { display: block; }

/* ===== Detail Overlay ===== */
.detail-overlay {
    position: fixed;
    inset: 0;
    z-index: 500;
    background: var(--bg);
    pointer-events: none;
    opacity: 0;
    overflow-y: auto;
}

.detail-overlay.is-active {
    pointer-events: auto;
}

/* Ghost image for FLIP animation */
.detail-ghost-image {
    position: fixed;
    z-index: 510;
    pointer-events: none;
    border-radius: 12px;
    overflow: hidden;
    will-change: transform, width, height, top, left;
}

.detail-ghost-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Detail content layout */
.detail-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 3rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.detail-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    width: 100%;
    align-items: center;
}

.detail-image-col {
    position: relative;
}

.detail-hero-image {
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    opacity: 0;
}

.detail-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Detail thumbnails */
.detail-thumbnails {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.8rem;
    overflow-x: auto;
    padding-bottom: 0.3rem;
    opacity: 0;
    transform: translateY(10px);
}

.detail-thumb {
    flex: 0 0 72px;
    height: 54px;
    border-radius: 6px;
    overflow: hidden;
    cursor: none;
    border: 2px solid transparent;
    opacity: 0.5;
    filter: grayscale(1);
    transition: all 0.3s ease;
}

.detail-thumb.active {
    border-color: var(--accent);
    opacity: 1;
    filter: grayscale(0);
}

.detail-thumb:hover {
    opacity: 0.8;
    filter: grayscale(0);
}

.detail-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-text-col {
    padding: 2rem 0;
}

.detail-category {
    display: inline-block;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(20px);
}

.detail-title {
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.3;
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateY(30px);
}

.detail-description {
    font-size: 1rem;
    line-height: 2;
    color: var(--text-dim);
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
}

.detail-link {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text);
    padding: 0.8rem 2rem;
    border: 1px solid var(--border);
    border-radius: 50px;
    transition: all 0.3s ease;
    cursor: none;
    opacity: 0;
    transform: translateY(20px);
}

.detail-link:hover {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

.detail-link svg {
    transition: transform 0.3s;
}

.detail-link:hover svg {
    transform: translate(3px, -3px);
}

/* Back button */
.detail-back {
    position: fixed;
    top: 1.5rem;
    left: 3rem;
    z-index: 520;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    cursor: none;
    opacity: 0;
    pointer-events: none;
    transition: background 0.3s, color 0.3s;
}

.detail-back:hover {
    background: var(--text);
    color: var(--bg);
}

.detail-overlay.is-active .detail-back {
    pointer-events: auto;
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 8rem 3rem;
    text-align: center;
}

.contact-body {
    opacity: 0;
    transform: translateY(20px);
}

.contact-email {
    display: inline-block;
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: 300;
    letter-spacing: 0.02em;
    color: var(--text);
    transition: color 0.3s ease;
    cursor: none;
}

.contact-email:hover {
    color: var(--accent);
}

.contact-socials {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2.5rem;
}

.contact-social-link {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    cursor: none;
    transition: all 0.3s ease;
}

.contact-social-link:hover {
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}

/* ===== Theme Transition Overlay ===== */
.theme-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    pointer-events: none;
    clip-path: circle(0px at 0px 0px);
}

/* ===== Footer ===== */
.site-footer {
    padding: 4rem 3rem;
    border-top: 1px solid var(--border);
}

.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.visitor-counter {
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    body { cursor: auto; }
    .cursor { display: none; }

    .main-nav { padding: 1rem 1.5rem; }
    .nav-menu { display: none; }
    .top-controls { top: 1rem; right: 1.5rem; }

    .about-section { padding: 5rem 1.5rem; }
    .about-body { font-size: 0.95rem; line-height: 1.8; }
    .capabilities { grid-template-columns: repeat(2, 1fr); margin-top: 3rem; }
    .capabilities .cap { padding: 1.4rem 1rem; }

    .hero-section { padding: 5rem 1.5rem; }
    .hero-title { font-size: clamp(1.35rem, 5.5vw, 2.1rem); line-height: 1.4; }
    .hero-subtitle { margin-top: 1rem; font-size: 0.95rem; line-height: 1.75; }
    .hero-stats { gap: 1.4rem; margin-top: 1.6rem; }
    .hero-cta { padding: 0.75rem 1.3rem; font-size: 0.78rem; }

    .portfolio-section { padding: 4rem 0 2rem; }
    .portfolio-section .section-title,
    .portfolio-section .category-filter { padding: 0 1.5rem; }

    .slider-track {
        gap: 1rem;
        padding: 0;
    }
    .slider-item { flex: 0 0 280px; }
    .slider-nav { gap: 1rem; padding: 0 1.5rem; }
    .slider-arrow { width: 40px; height: 40px; }

    .detail-content { padding: 5rem 1.5rem 3rem; }
    .detail-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .detail-back { top: 1rem; left: 1.5rem; }

    .section-title {
        font-size: clamp(1.4rem, 5vw, 2rem);
        margin-bottom: 1.5rem;
    }

    .section-subtitle { margin-top: -0.5rem; }

    .extra-content-section { padding: 4rem 1.5rem; }

    .contact-section { padding: 5rem 1.5rem; }

    .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
}