/* ============================================================
   LIAM (CHOI HWANJIN) — Senior Game Designer
   dark editorial · gold accent · premium
   ============================================================ */

:root {
    --bg: #0f0f12;
    --panel: #161619;
    --panel-2: #1b1b20;
    --line: rgba(255, 255, 255, .09);
    --line-2: rgba(255, 255, 255, .16);
    --ink: #ece9e2;
    --ink-dim: #9a968d;
    --ink-faint: #6c6960;
    --gold: #cda45e;
    --gold-deep: #b88a45;
    --gold-soft: rgba(205, 164, 94, .12);
    --shadow: 0 24px 60px rgba(0, 0, 0, .5);

    --serif: 'Fraunces', Georgia, serif;
    --sans: 'Inter', system-ui, sans-serif;
    --mono: 'Space Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--gold); text-decoration: none; }
ul { list-style: none; }
::selection { background: var(--gold); color: #1a1407; }
.ic { width: 1em; height: 1em; display: inline-block; vertical-align: -0.14em; }

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex; align-items: center; gap: .6em;
    font-family: var(--sans); font-weight: 600;
    font-size: .8rem; letter-spacing: .08em; text-transform: uppercase;
    padding: .95em 1.7em; border: 1px solid transparent; border-radius: 2px;
    cursor: pointer; transition: all .2s; white-space: nowrap;
}
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(4px); }
.btn-primary { background: var(--gold); color: #1a1407; }
.btn-primary:hover { background: var(--gold-deep); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn-big { font-size: .9rem; padding: 1.1em 2.2em; }

/* ============ HEADER ============ */
.site-header {
    position: fixed; inset: 0 0 auto 0; z-index: 100;
    display: flex; align-items: center; gap: 2rem;
    padding: 1.3rem 3rem;
    transition: background .3s, box-shadow .3s, padding .3s;
}
.site-header.scrolled { background: rgba(15, 15, 18, .82); backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line); padding-top: .9rem; padding-bottom: .9rem; }
.logo { display: flex; align-items: center; gap: .75rem; }
.logo-badge {
    width: 40px; height: 40px; flex-shrink: 0;
    display: grid; place-items: center;
    font-family: var(--serif); font-weight: 600; font-size: 1.3rem;
    color: var(--gold); border: 1px solid var(--gold); border-radius: 3px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.3; }
.logo-text strong { font-family: var(--serif); font-weight: 600; font-size: 1.05rem; letter-spacing: .02em; }
.logo-text em { font-style: normal; font-family: var(--mono); font-size: .56rem; letter-spacing: .18em; color: var(--ink-dim); }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 1.8rem; }
.nav-link { font-size: .82rem; font-weight: 500; letter-spacing: .04em; color: var(--ink-dim); position: relative; padding-bottom: 4px; transition: color .2s; }
.nav-link:hover, .nav-link.is-current { color: var(--ink); }
.nav-link.is-current::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: var(--gold); }
.btn-head { padding: .6em 1.1em; font-size: .72rem; background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-head:hover { border-color: var(--gold); color: var(--gold); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); }

/* ============ HERO ============ */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.hero-grid-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(1000px 600px at 80% 0%, rgba(205,164,94,.10), transparent 60%),
        linear-gradient(180deg, #131316, var(--bg) 60%);
}
.hero-grid-bg::after {
    content: ""; position: absolute; inset: 0;
    background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 64px 64px;
    -webkit-mask-image: radial-gradient(circle at 70% 30%, #000, transparent 75%);
    mask-image: radial-gradient(circle at 70% 30%, #000, transparent 75%);
    opacity: .5;
}
.hero-inner {
    position: relative; z-index: 2; width: 100%; max-width: 1280px; margin: 0 auto;
    padding: 8rem 3rem 5rem;
    display: grid; grid-template-columns: 1.5fr 1fr; gap: 3.5rem; align-items: center;
}
.hero-inner > * { min-width: 0; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: .6rem; font-family: var(--mono); font-size: .76rem; letter-spacing: .16em; color: var(--gold); margin-bottom: 1.5rem; }
.hero-eyebrow .dot { width: 7px; height: 7px; background: var(--gold); border-radius: 50%; box-shadow: 0 0 0 4px var(--gold-soft); }
.hero-title { font-family: var(--serif); font-weight: 500; font-size: clamp(4.5rem, 11vw, 8.5rem); line-height: .92; letter-spacing: -.01em; }
.hero-aka { font-family: var(--serif); font-size: 1.4rem; color: var(--ink-dim); margin: .3rem 0 1.6rem; }
.hero-aka em { color: var(--gold); font-style: italic; }
.hero-lead { font-size: 1.12rem; color: var(--ink-dim); max-width: 34rem; margin-bottom: 2.1rem; }
.hero-lead strong { color: var(--ink); font-weight: 600; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.6rem; }
.hero-stats { display: flex; gap: 2.8rem; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-family: var(--serif); font-weight: 500; font-size: 2.6rem; line-height: 1; color: var(--gold); }
.hero-stats em { font-style: normal; font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-dim); margin-top: .5rem; }

.hero-card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 1.8rem; box-shadow: var(--shadow); }
.hc-row { display: flex; flex-direction: column; gap: .6rem; }
.hc-label { font-family: var(--mono); font-size: .64rem; letter-spacing: .18em; color: var(--ink-faint); }
.hc-row p { line-height: 1.4; }
.hc-row p strong { font-family: var(--serif); font-weight: 500; font-size: 1.15rem; display: block; }
.hc-row p span { font-size: .82rem; color: var(--ink-dim); }
.hc-divider { height: 1px; background: var(--line); margin: 1.3rem 0; }
.hc-tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.hc-tags li { font-size: .74rem; color: var(--ink); padding: .3em .8em; border: 1px solid var(--line-2); border-radius: 40px; }

.scroll-hint { position: absolute; bottom: 1.8rem; left: 50%; transform: translateX(-50%); font-family: var(--mono); font-size: .68rem; letter-spacing: .2em; color: var(--ink-faint); display: flex; align-items: center; gap: .5rem; }
.scroll-hint span { animation: bob 1.6s infinite; }
@keyframes bob { 0%,100%{transform:translateY(0)} 50%{transform:translateY(4px)} }

/* ============ SECTIONS ============ */
.section { max-width: 1180px; margin: 0 auto; padding: 6.5rem 3rem; }
.section-alt { max-width: none; padding-left: 0; padding-right: 0; background: var(--panel); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-alt > * { max-width: 1180px; margin-left: auto; margin-right: auto; padding-left: 3rem; padding-right: 3rem; }
.section-head { margin-bottom: 3.2rem; }
.section-index { font-family: var(--mono); font-size: .8rem; letter-spacing: .14em; color: var(--gold); }
.section-title { font-family: var(--serif); font-weight: 500; font-size: clamp(2rem, 4.2vw, 3.2rem); line-height: 1.08; letter-spacing: -.01em; margin: .6rem 0 .8rem; }
.section-sub { color: var(--ink-dim); font-size: 1.02rem; max-width: 46rem; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s, transform .7s; }
.reveal.visible { opacity: 1; transform: none; }

/* ============ WORK ============ */
.work-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
.work-card {
    background: var(--panel-2); border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
    transition: transform .25s, border-color .25s, box-shadow .25s;
}
.work-card[data-yt] { cursor: pointer; }
.work-card:hover { transform: translateY(-5px); border-color: var(--line-2); box-shadow: var(--shadow); }
.work-card[data-yt]:hover { border-color: var(--gold); }
.work-thumb { position: relative; aspect-ratio: 16/9; overflow: hidden; background: #000; }
.work-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s, opacity .3s; opacity: .9; }
.work-card:hover .work-thumb img { transform: scale(1.04); opacity: 1; }
.work-thumb .play {
    position: absolute; inset: 0; display: grid; place-items: center;
    background: rgba(15,15,18,.3); opacity: 0; transition: opacity .25s;
}
.work-thumb .play svg { width: 30px; height: 30px; color: #1a1407; }
.work-thumb .play::before { content: ""; position: absolute; width: 64px; height: 64px; border-radius: 50%; background: var(--gold); z-index: -1; }
.work-card:hover .play { opacity: 1; }
.work-flag { position: absolute; top: 12px; left: 12px; font-family: var(--mono); font-size: .6rem; letter-spacing: .14em; padding: .35em .7em; background: rgba(15,15,18,.7); border: 1px solid var(--line-2); color: var(--ink); border-radius: 2px; }
.work-body { padding: 1.5rem 1.6rem 1.7rem; }
.work-cat { font-family: var(--mono); font-size: .64rem; letter-spacing: .12em; color: var(--gold); }
.work-body h3 { font-family: var(--serif); font-weight: 500; font-size: 1.5rem; margin: .5rem 0 .7rem; }
.work-body p { font-size: .92rem; color: var(--ink-dim); margin-bottom: 1.1rem; }
.work-tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.work-tags li { font-size: .68rem; letter-spacing: .03em; color: var(--ink-dim); padding: .35em .8em; border: 1px solid var(--line); border-radius: 40px; }

/* featured (flagship) card */
.work-card.featured { grid-column: 1 / -1; display: grid; grid-template-columns: 1.35fr 1fr; border-color: rgba(205,164,94,.4); }
.work-card.featured:hover { border-color: var(--gold); }
.work-card.featured .work-thumb { aspect-ratio: auto; min-height: 360px; }
.work-card.featured .work-body { display: flex; flex-direction: column; justify-content: center; padding: 2.6rem 2.5rem; }
.work-card.featured h3 { font-size: clamp(1.9rem, 3vw, 2.5rem); }
.work-card.featured p { font-size: 1.02rem; }
.featured-badge { position: absolute; top: 14px; left: 14px; display: inline-flex; align-items: center; gap: .4em; font-family: var(--mono); font-weight: 700; font-size: .62rem; letter-spacing: .14em; padding: .45em .85em; background: var(--gold); color: #1a1407; border-radius: 2px; }
.featured-badge .ic { width: 12px; height: 12px; }
@media (max-width: 880px) { .work-card.featured { grid-template-columns: 1fr; } .work-card.featured .work-thumb { aspect-ratio: 16/9; min-height: 0; } }
.work-more { margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--line); text-align: center; font-family: var(--mono); font-size: .82rem; letter-spacing: .04em; color: var(--ink-dim); }
.work-more strong { color: var(--gold); font-weight: 400; }

/* ============ ABOUT ============ */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 3.5rem; align-items: start; }
.about-quote { font-family: var(--serif); font-weight: 500; font-size: clamp(1.5rem, 2.6vw, 2.1rem); line-height: 1.35; font-style: italic; }
.about-quote::first-letter { color: var(--gold); }
.about-lead { font-size: 1.15rem; margin-bottom: 1.1rem; }
.about-lead strong { color: var(--gold); }
.about-text > p { color: var(--ink-dim); }
.about-text > p + p { margin-top: 1rem; }

/* ============ EXPERTISE ============ */
.expertise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.exp-card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 1.8rem 1.6rem; transition: border-color .2s, transform .2s; }
.exp-card:hover { border-color: var(--line-2); transform: translateY(-3px); }
.exp-card .ic { width: 26px; height: 26px; color: var(--gold); }
.exp-card h4 { font-family: var(--serif); font-weight: 500; font-size: 1.2rem; margin: 1rem 0 .5rem; }
.exp-card p { font-size: .88rem; color: var(--ink-dim); }
.tool-row { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem 1.2rem; margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.tool-label { font-family: var(--mono); font-size: .66rem; letter-spacing: .16em; color: var(--ink-faint); }
.tool-chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-right: 1rem; }
.tool-chips li { font-size: .8rem; color: var(--ink); padding: .4em 1em; background: var(--panel-2); border: 1px solid var(--line); border-radius: 3px; }

/* ============ EXPERIENCE timeline ============ */
.timeline { display: grid; gap: 0; max-width: 760px; }
.tl-item { display: grid; grid-template-columns: 150px 1fr; gap: 1.5rem; padding: 1.4rem 0; border-top: 1px solid var(--line); align-items: baseline; transition: padding-left .2s; }
.tl-item:last-child { border-bottom: 1px solid var(--line); }
.tl-item:hover { padding-left: .6rem; }
.tl-year { font-family: var(--mono); font-size: .82rem; color: var(--gold); }
.tl-body h5 { font-family: var(--serif); font-weight: 500; font-size: 1.35rem; }
.tl-role { font-size: .9rem; color: var(--ink-dim); }
.tl-edu .tl-year { color: var(--ink-faint); }

/* ============ CONTACT ============ */
.contact-row { display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem; }
.contact-card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 1.1rem 1.6rem; color: var(--ink); transition: border-color .2s, transform .2s; }
.contact-card:hover { border-color: var(--gold); transform: translateY(-3px); }
.contact-static { cursor: default; }
.contact-static:hover { border-color: var(--line); transform: none; }
.contact-card span { display: flex; align-items: center; gap: .5em; font-family: var(--mono); font-size: .64rem; letter-spacing: .12em; color: var(--gold); margin-bottom: .4rem; }
.contact-row .btn-big { margin-left: auto; }

/* ============ FOOTER ============ */
.site-footer { border-top: 1px solid var(--line); padding: 2.2rem 3rem; display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; font-family: var(--mono); font-size: .7rem; letter-spacing: .08em; color: var(--ink-faint); }
.back-top:hover { color: var(--gold); }

/* ============ MODAL ============ */
.modal { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 4vh 4vw; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(8, 8, 10, .9); backdrop-filter: blur(4px); }
.modal-box { position: relative; width: min(1000px, 94vw); }
.modal-frame { position: relative; aspect-ratio: 16/9; background: #000; border: 1px solid var(--line-2); border-radius: 4px; overflow: hidden; }
.modal-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.modal-close { position: absolute; top: -44px; right: 0; width: 36px; height: 36px; background: transparent; color: var(--ink); border: 1px solid var(--line-2); border-radius: 3px; font-size: 1rem; cursor: pointer; }
.modal-close:hover { border-color: var(--gold); color: var(--gold); }
.modal-yt { display: inline-block; margin-top: 1rem; font-family: var(--mono); font-size: .74rem; letter-spacing: .06em; color: var(--ink-dim); }
.modal-yt:hover { color: var(--gold); }

/* ============ RESPONSIVE ============ */
@media (max-width: 1000px) {
    .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
    .about-grid { grid-template-columns: 1fr; gap: 1.8rem; }
    .expertise-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 880px) {
    .main-nav { position: fixed; top: 60px; right: 1rem; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 1.2rem 1.8rem; display: none; }
    .main-nav.open { display: block; }
    .main-nav ul { flex-direction: column; gap: 1.1rem; }
    .nav-toggle { display: flex; margin-left: auto; }
    .main-nav { margin-left: 0; }
    .btn-head { order: 1; }
    .site-header { gap: 1rem; padding: .9rem 1.3rem; }
    .work-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .hero-inner { padding: 7rem 1.3rem 4rem; }
    .section { padding: 4.5rem 1.3rem; }
    .section-alt { padding-left: 0; padding-right: 0; }
    .section-alt > * { padding-left: 1.3rem; padding-right: 1.3rem; }
    .hero-stats { gap: 1.6rem; }
    .hero-stats strong { font-size: 2rem; }
    .expertise-grid { grid-template-columns: 1fr; }
    .tl-item { grid-template-columns: 1fr; gap: .3rem; }
    .contact-row .btn-big { margin-left: 0; }
    .scroll-hint { display: none; }
    .btn-head { display: none; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } html { scroll-behavior: auto; } }