/* ═══════════════════════════════════════════════════════
   DONY LANGGENG — FROZEN AI CREATIVE CORE
   Dark, cold, cinematic. Igloo-level motion grammar,
   original Dony identity.
   ═══════════════════════════════════════════════════════ */

:root {
  --black: #05070B;
  --navy: #07111F;
  --ice: #8FD8FF;
  --electric: #2F5BFF;
  --white: #F4F8FF;
  --cyan: #7FE7E0;
  --dim: rgba(244, 248, 255, 0.68);
  --faint: rgba(143, 216, 255, 0.16);
  --shadow-text: 0 1px 4px rgba(3,5,9,0.9), 0 2px 22px rgba(3,5,9,0.85);
  --font-display: "Archivo", sans-serif;
  --font-body: "Space Grotesk", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

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

html { scrollbar-width: thin; scrollbar-color: rgba(143,216,255,.25) var(--black); }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 300;
  overflow-x: hidden;
  cursor: none;
  -webkit-font-smoothing: antialiased;
}
@media (hover: none), (max-width: 820px) { body { cursor: auto; } .cursor { display: none; } }

::selection { background: var(--electric); color: var(--white); }

.mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--dim);
}

/* every piece of copy sits on glowing 3D — always separate it from the scene */
#stage h1, #stage h2, #stage h3, #stage p, #stage li, #stage b, #stage figcaption,
#stage .ch-index, #stage .works-num, #stage .works-meta {
  text-shadow: var(--shadow-text);
}

a { color: inherit; text-decoration: none; }
button { background: none; border: none; color: inherit; font: inherit; cursor: none; }
@media (hover: none), (max-width: 820px) { button { cursor: pointer; } }

/* ══════════ CANVAS + ATMOSPHERE ══════════ */

#gl {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh; height: 100dvh;
  z-index: 0; display: block;
}

.grain {
  position: fixed; inset: -50%;
  width: 200%; height: 200%;
  z-index: 40; pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 0.6s steps(4) infinite;
}
@keyframes grain {
  0% { transform: translate(0,0); } 25% { transform: translate(-2%,3%); }
  50% { transform: translate(3%,-2%); } 75% { transform: translate(-3%,-3%); }
  100% { transform: translate(2%,2%); }
}

.vignette {
  position: fixed; inset: 0; z-index: 39; pointer-events: none;
  background:
    radial-gradient(ellipse 130% 100% at 50% 45%, transparent 55%, rgba(2,4,8,0.55) 100%),
    linear-gradient(to bottom, rgba(2,4,8,0.5), transparent 12%, transparent 88%, rgba(2,4,8,0.6));
}

/* ══════════ CURSOR ══════════ */

.cursor { position: fixed; inset: 0; z-index: 100; pointer-events: none; }
.cursor-dot {
  position: absolute; width: 4px; height: 4px; border-radius: 50%;
  background: var(--ice); transform: translate(-50%, -50%);
  box-shadow: 0 0 8px var(--ice);
}
.cursor-ring {
  position: absolute; width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid rgba(143,216,255,0.35);
  transform: translate(-50%, -50%);
  transition: width .3s ease, height .3s ease, border-color .3s ease;
}
.cursor.is-hover .cursor-ring { width: 52px; height: 52px; border-color: rgba(143,216,255,0.8); }

/* ══════════ PRELOADER ══════════ */

#preloader {
  position: fixed; inset: 0; z-index: 200;
  background: var(--black);
  display: flex; align-items: center; justify-content: center;
}
.pre-center { text-align: center; position: relative; z-index: 2; }
.pre-count {
  font-family: var(--font-mono); font-size: 3.4rem; font-weight: 300;
  color: var(--white); letter-spacing: 0.1em; line-height: 1;
  font-variant-numeric: tabular-nums;
}
.pre-label {
  font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.42em;
  color: var(--ice); margin-top: 1.2rem; animation: flicker 2.4s infinite;
}
.pre-line {
  width: 210px; height: 1px; margin: 1.4rem auto 0;
  background: rgba(143,216,255,0.12); overflow: hidden;
}
.pre-line-fill {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--electric), var(--ice));
  box-shadow: 0 0 12px var(--ice);
}
.pre-tags { font-family: var(--font-mono); font-size: 0.56rem; letter-spacing: 0.3em; color: var(--dim); margin-top: 1rem; }
.pre-ring {
  position: absolute; width: 420px; height: 420px; border-radius: 50%;
  border: 1px solid rgba(143,216,255,0.07);
  animation: preRing 3s ease-in-out infinite;
}
@keyframes preRing { 0%,100% { transform: scale(0.92); opacity: .4; } 50% { transform: scale(1); opacity: 1; } }
@keyframes flicker { 0%,100% { opacity: 1; } 92% { opacity: 1; } 93% { opacity: .3; } 94% { opacity: 1; } 97% { opacity: .5; } 98% { opacity: 1; } }

/* ══════════ NAV ══════════ */

#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.6rem 2.4rem;
  mix-blend-mode: screen;
  opacity: 0; /* revealed after preloader */
}
.nav-mono {
  font-family: var(--font-display); font-weight: 800; font-size: 1.05rem;
  letter-spacing: 0.06em; color: var(--white);
}
.nav-mono-dot { color: var(--ice); }
.nav-status { font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 0.3em; color: var(--dim); }
.nav-status .blink { color: var(--cyan); font-size: 0.5rem; vertical-align: 1px; animation: blink 2s infinite; margin-right: .6em; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: .15; } }
.nav-right { display: flex; align-items: center; gap: 1rem; }
.sound-toggle {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid transparent;
  transition: border-color .3s;
}
.sound-toggle:hover { border-color: var(--faint); }
.eq { display: flex; align-items: flex-end; gap: 2px; height: 12px; }
.eq i {
  width: 2px; height: 100%; background: var(--ice);
  transform-origin: bottom; border-radius: 1px;
  animation: eq 1.3s ease-in-out infinite;
  box-shadow: 0 0 6px rgba(143,216,255,0.6);
}
.eq i:nth-child(2) { animation-delay: 0.25s; }
.eq i:nth-child(3) { animation-delay: 0.5s; }
.eq i:nth-child(4) { animation-delay: 0.12s; }
@keyframes eq { 0%, 100% { transform: scaleY(0.25); } 50% { transform: scaleY(1); } }
.sound-toggle.is-off .eq i { animation: none; transform: scaleY(0.16); background: var(--dim); box-shadow: none; }
.sound-label { font-size: 0.58rem; letter-spacing: 0.22em; color: var(--dim); }
.sound-toggle:not(.is-off) .sound-label { color: var(--ice); }

.nav-cta {
  font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.26em;
  color: var(--white); padding: 0.7rem 1.3rem;
  border: 1px solid rgba(143,216,255,0.25);
  transition: border-color .3s, background .3s, color .3s;
  backdrop-filter: blur(6px);
}
.nav-cta:hover { border-color: var(--ice); background: rgba(143,216,255,0.08); }

/* ══════════ RAIL ══════════ */

#rail {
  position: fixed; right: 2.2rem; top: 50%; transform: translateY(-50%);
  z-index: 60; display: flex; flex-direction: column; gap: 1.1rem;
  opacity: 0;
}
.rail-dot { position: relative; width: 10px; height: 10px; display: grid; place-items: center; }
.rail-dot::before {
  content: ""; width: 4px; height: 4px; border-radius: 50%;
  background: rgba(143,216,255,0.3); transition: all .4s ease;
}
.rail-dot.is-active::before { background: var(--ice); box-shadow: 0 0 10px var(--ice); transform: scale(1.5); }
.rail-dot span {
  position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-mono); font-size: 0.55rem; letter-spacing: 0.24em;
  color: var(--ice); white-space: nowrap; opacity: 0;
  transition: opacity .3s; pointer-events: none;
}
.rail-dot:hover span { opacity: 1; }

/* ══════════ STAGE / CHAPTERS ══════════ */

#stage { position: fixed; inset: 0; z-index: 20; pointer-events: none; }
.chapter {
  position: absolute; inset: 0;
  opacity: 0; visibility: hidden;
}
.chapter.is-on { pointer-events: auto; }
.chapter a, .chapter button, .chapter li[data-hover], .chapter figure { pointer-events: auto; }

.ch-index {
  font-size: 0.62rem; color: var(--ice); letter-spacing: 0.4em;
  margin-bottom: 1.2rem;
}
.ch-index::after { content: ""; display: inline-block; width: 44px; height: 1px; background: linear-gradient(90deg, var(--ice), transparent); margin-left: 12px; vertical-align: 3px; }

.ch-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: 90%;
  font-size: clamp(1.8rem, 4.2vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}
.ch-body {
  max-width: 52ch; font-size: 1rem; line-height: 1.8;
  color: rgba(244,248,255,0.86); margin-top: 1.4rem;
}

/* soft dark scrim behind text columns for readability over the 3D scene */
.core-left, .exp-inner, .edu-inner, .works-display, .skill-grid, .sys-head { position: relative; z-index: 0; }
.core-left::before, .exp-inner::before, .edu-inner::before, .works-display::before, .skill-grid::before {
  content: ""; position: absolute; inset: -2.4rem -3rem; z-index: -1;
  background: radial-gradient(ellipse 100% 100% at 50% 50%, rgba(4,6,10,0.72), rgba(4,6,10,0.38) 55%, transparent 80%);
  pointer-events: none;
}

/* ── 01 HERO ── */

#ch-hero { display: flex; align-items: center; justify-content: center; text-align: center; }
.hero-kicker {
  font-size: clamp(0.78rem, 1.1vw, 0.95rem); letter-spacing: 0.38em;
  color: var(--ice); margin-bottom: 2.2rem;
  text-shadow: var(--shadow-text);
}
.hero-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: 87%;
  font-size: clamp(3.4rem, 11.5vw, 10.5rem);
  line-height: 0.92;
  letter-spacing: 0.005em;
  display: flex; flex-direction: column; align-items: center;
  text-shadow: 0 0 80px rgba(47,91,255,0.35);
}
.hero-line-2 { color: var(--white); }
.hero-sub {
  margin-top: 2.4rem; font-size: clamp(0.95rem, 1.5vw, 1.15rem); line-height: 1.8;
  color: rgba(244,248,255,0.88);
  text-shadow: var(--shadow-text);
}
.hero-meta {
  margin-top: 2.6rem; display: flex; align-items: center; justify-content: center;
  gap: 1.2rem; flex-wrap: wrap; font-size: 0.66rem; letter-spacing: 0.24em; color: var(--dim);
  text-shadow: var(--shadow-text);
}
.hero-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--ice); opacity: .6; }
.hero-corner { position: absolute; bottom: 2rem; font-size: 0.56rem; letter-spacing: 0.28em; }
.hero-corner-bl { left: 2.4rem; }
.hero-corner-br { right: 2.4rem; }
.scroll-arrow { display: inline-block; margin-left: 0.8em; color: var(--ice); animation: bob 2s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

/* ── 02 THE CORE ── */

#ch-core { display: flex; align-items: center; }
.core-grid {
  width: 100%; padding: 0 6vw;
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: 6vw; align-items: center;
}
.core-pillars {
  list-style: none; margin-top: 2.6rem;
  display: grid; grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 0; border-top: 1px solid var(--faint);
}
.core-pillars li {
  padding: 1rem 0.4rem; border-bottom: 1px solid var(--faint);
  font-size: 0.74rem; letter-spacing: 0.22em; color: var(--white);
  display: flex; align-items: center; gap: 1rem;
  transition: background .35s, padding-left .35s;
}
.core-pillars li:hover { background: rgba(143,216,255,0.05); padding-left: 1rem; }
.core-pillars li em { font-style: normal; color: var(--ice); font-size: 0.64rem; opacity: .85; }

/* Portrait — frozen frame treatment */
.portrait { position: relative; max-width: 340px; margin-left: auto; }
.portrait-img {
  position: relative; overflow: hidden;
  clip-path: polygon(0 3%, 96% 0, 100% 96%, 4% 100%);
  background: var(--navy);
}
.portrait-img::after {
  content: ""; position: absolute; inset: 0; z-index: 3;
  background:
    linear-gradient(to top, rgba(5,7,11,0.6), transparent 34%),
    radial-gradient(ellipse 130% 100% at 50% 30%, transparent 62%, rgba(5,7,11,0.5));
}
.portrait-img img {
  display: block; width: 100%; height: auto;
  filter: contrast(1.06) brightness(0.98) saturate(1.06);
  transform: scale(1.03);
  transition: transform 1.2s cubic-bezier(.2,.8,.2,1);
}
.portrait:hover .portrait-img img { transform: scale(1.08); }
.portrait-scan {
  position: absolute; inset: 0; z-index: 4; pointer-events: none;
  background: repeating-linear-gradient(to bottom, transparent 0 3px, rgba(143,216,255,0.03) 3px 4px);
  clip-path: polygon(0 3%, 96% 0, 100% 96%, 4% 100%);
}
.portrait-scan::after {
  content: ""; position: absolute; left: 0; right: 0; height: 22%;
  background: linear-gradient(to bottom, transparent, rgba(143,216,255,0.1), transparent);
  animation: scan 5s linear infinite;
}
@keyframes scan { 0% { top: -25%; } 100% { top: 105%; } }
.portrait figcaption {
  margin-top: 0.9rem; display: flex; flex-direction: column; gap: 0.3rem;
  font-size: 0.62rem; letter-spacing: 0.22em; color: var(--dim);
}
.portrait figcaption span:last-child { color: var(--cyan); }

/* ── 03 WORK EXPERIENCE ── */

#ch-exp { display: flex; align-items: center; }
.exp-inner { padding: 0 6vw; max-width: 680px; }
.exp-list { list-style: none; margin-top: 1.6rem; border-top: 1px solid var(--faint); }
.exp-list li {
  padding: 0.8rem 0.4rem; border-bottom: 1px solid var(--faint);
  display: grid; grid-template-columns: 52px 118px 1fr; gap: 1.1rem;
  align-items: start;
  transition: background .35s, padding-left .35s;
}
.exp-list li:hover { background: rgba(143,216,255,0.05); padding-left: 1rem; }
.exp-logo {
  width: 52px; height: 52px; border-radius: 10px;
  background: #FDFDFD; display: grid; place-items: center; padding: 6px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.45), 0 0 0 1px rgba(143,216,255,0.18);
  overflow: hidden;
}
.exp-logo img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; }
.exp-logo--dark {
  background: linear-gradient(150deg, #0B1B33, #142E55);
  box-shadow: 0 4px 18px rgba(0,0,0,0.45), 0 0 0 1px rgba(143,216,255,0.35);
}
.exp-year { color: var(--ice); font-size: 0.64rem; padding-top: 0.35rem; }
.exp-role {
  font-family: var(--font-display); font-weight: 780; font-stretch: 90%;
  font-size: 1.12rem; letter-spacing: 0.02em;
}
.exp-org { font-size: 0.62rem; margin-top: 0.3rem; color: var(--cyan); }
.exp-list p {
  color: rgba(244,248,255,0.82); font-size: 0.86rem; line-height: 1.62; margin-top: 0.45rem; max-width: 56ch;
}

/* ── 04 EDUCATION & ORGANIZATIONS ── */

#ch-edu { display: flex; align-items: center; justify-content: flex-end; }
.edu-inner { padding: 0 6vw; width: min(560px, 88vw); }
.edu-block { margin-top: 1.9rem; }
.edu-block h3 {
  font-size: 0.58rem; letter-spacing: 0.34em; color: var(--ice);
  font-weight: 400; margin-bottom: 0.6rem;
}
.edu-block h3::after { content: ""; display: inline-block; width: 36px; height: 1px; background: linear-gradient(90deg, var(--ice), transparent); margin-left: 10px; vertical-align: 3px; }
.edu-rows { list-style: none; border-top: 1px solid var(--faint); }
.edu-rows li {
  padding: 0.8rem 0.4rem; border-bottom: 1px solid var(--faint);
  display: flex; align-items: center; gap: 1.1rem;
  transition: background .35s, padding-left .35s;
}
.edu-rows li:hover { background: rgba(143,216,255,0.06); padding-left: 0.9rem; }
.edu-logo {
  flex: 0 0 auto; width: 58px; height: 58px; border-radius: 12px;
  background: #FDFDFD; display: grid; place-items: center; padding: 7px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.45), 0 0 0 1px rgba(143,216,255,0.18);
}
.edu-logo img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; }
.edu-logo-text {
  background: rgba(47,91,255,0.16); color: var(--ice);
  font-family: var(--font-display); font-weight: 800; font-size: 0.95rem; letter-spacing: 0.04em;
  box-shadow: 0 4px 18px rgba(0,0,0,0.45), 0 0 0 1px rgba(143,216,255,0.35);
}
.edu-info { display: flex; flex-direction: column; gap: 0.3rem; min-width: 0; }
.edu-info b {
  font-family: var(--font-display); font-weight: 820; font-stretch: 90%;
  font-size: 1.16rem; letter-spacing: 0.02em; color: var(--white);
}
.edu-info span { font-size: 0.63rem; color: var(--dim); letter-spacing: 0.14em; }

/* ── 05 CORE COMPETENCE & TECHNICAL SKILLS ── */

#ch-skill { display: flex; flex-direction: column; justify-content: flex-end; padding: 0 6vw 6.5vh; }
.skill-grid {
  display: grid; grid-template-columns: 1fr 1.15fr 1fr; gap: 2.4rem;
  margin-top: 2rem; max-width: 1280px;
}
.skill-col h3 {
  font-size: 0.58rem; letter-spacing: 0.34em; color: var(--ice);
  font-weight: 400; margin-top: 1.3rem;
}
.skill-col h3:first-child { margin-top: 0; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 0.65rem; }
.chips li {
  font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.14em;
  color: rgba(244,248,255,0.95); padding: 0.55rem 0.85rem;
  border: 1px solid rgba(143,216,255,0.24); background: rgba(6,12,22,0.82);
  backdrop-filter: blur(6px);
  transition: border-color .3s, color .3s, background .3s;
}
.chips li:hover { border-color: var(--ice); color: var(--ice); background: rgba(143,216,255,0.06); }

/* ── 06 WORKS ── */

#ch-works { padding: 0 6vw; display: flex; flex-direction: column; justify-content: center; }
.works-head { position: absolute; top: 12vh; left: 6vw; }
.works-display { max-width: 520px; margin-top: 8vh; }
.works-num { font-size: 0.72rem; letter-spacing: 0.3em; color: var(--ice); margin-bottom: 1.6rem; font-variant-numeric: tabular-nums; }
#works-num-cur { color: var(--white); font-size: 1.5rem; margin-right: 0.4rem; }
.works-title {
  font-family: var(--font-display); font-weight: 800; font-stretch: 90%;
  font-size: clamp(1.9rem, 4vw, 3.4rem); line-height: 1; text-transform: uppercase;
  min-height: 2em;
}
.works-desc {
  margin-top: 1.3rem; color: rgba(244,248,255,0.84); font-size: 1rem; line-height: 1.75;
  max-width: 46ch; min-height: 5.2em;
}
.works-meta { margin-top: 1.4rem; font-size: 0.66rem; letter-spacing: 0.26em; color: var(--cyan); }
.works-list {
  position: absolute; right: 6vw; bottom: 10vh;
  list-style: none; text-align: right;
}
.works-list li {
  padding: 0.55rem 0; font-size: 0.68rem; letter-spacing: 0.26em;
  color: rgba(244,248,255,0.42); transition: color .4s, letter-spacing .4s;
  text-shadow: var(--shadow-text);
}
.works-list li:hover, .works-list li.is-active { color: var(--white); letter-spacing: 0.36em; }
.works-list li.is-active::after { content: " —"; color: var(--ice); }

/* ── 07 PORTFOLIO ── */

#ch-portfolio { display: flex; flex-direction: column; justify-content: center; padding: 0 6vw; }
.pf-inner { width: 100%; max-width: 1240px; margin: 0 auto; }
.pf-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
}
.pf-tabs { display: flex; gap: 0.5rem; flex-wrap: wrap; padding-bottom: 0.4rem; }
.pf-tab {
  font-family: var(--font-mono); font-size: 0.56rem; letter-spacing: 0.2em;
  color: var(--dim); padding: 0.7rem 1.1rem;
  border: 1px solid var(--faint); background: rgba(7,17,31,0.55);
  backdrop-filter: blur(6px);
  transition: color .3s, border-color .3s, background .3s, box-shadow .3s;
}
.pf-tab:hover { color: var(--white); border-color: rgba(143,216,255,0.4); }
.pf-tab.is-active {
  color: var(--black); background: var(--ice); border-color: var(--ice);
  box-shadow: 0 0 26px rgba(143,216,255,0.35);
}
.pf-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 1.1rem; margin-top: 2.2rem;
  max-height: 60vh; overflow-y: auto; padding-right: 6px;
  scrollbar-width: thin; scrollbar-color: rgba(143,216,255,.3) transparent;
}
.pf-grid::-webkit-scrollbar { width: 4px; }
.pf-grid::-webkit-scrollbar-thumb { background: rgba(143,216,255,.3); }
.pf-card {
  position: relative; text-align: left; display: block; width: 100%;
  padding: 0; border: 1px solid var(--faint);
  background: rgba(7,17,31,0.55); backdrop-filter: blur(6px);
  transition: border-color .35s, transform .35s, box-shadow .35s;
  opacity: 0; transform: translateY(18px);
  animation: cardIn .7s cubic-bezier(.2,.8,.2,1) forwards;
  animation-delay: var(--d, 0ms);
}
@keyframes cardIn { to { opacity: 1; transform: translateY(0); } }
.pf-card:hover {
  border-color: rgba(143,216,255,0.55);
  transform: translateY(-4px);
  box-shadow: 0 18px 44px rgba(0,0,0,0.5), 0 0 30px rgba(47,91,255,0.18);
}
.pf-thumb {
  position: relative; display: block; aspect-ratio: 16 / 9; overflow: hidden;
  background: var(--navy);
}
.pf-thumb img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: grayscale(0.35) contrast(1.06) brightness(0.82);
  transform: scale(1.02);
  transition: transform .8s cubic-bezier(.2,.8,.2,1), filter .5s;
}
.pf-card:hover .pf-thumb img { transform: scale(1.09); filter: grayscale(0) contrast(1.05) brightness(0.95); }
.pf-thumb::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(5,7,11,0.65), transparent 45%);
  pointer-events: none;
}
.pf-play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 52px; height: 52px; border-radius: 50%;
  display: grid; place-items: center; z-index: 2;
  border: 1px solid rgba(244,248,255,0.5);
  background: rgba(5,7,11,0.45); backdrop-filter: blur(6px);
  transition: background .35s, border-color .35s, box-shadow .35s, transform .35s;
}
.pf-play svg { width: 15px; height: 15px; fill: var(--white); margin-left: 2px; transition: fill .35s; }
.pf-card:hover .pf-play {
  background: var(--ice); border-color: var(--ice);
  box-shadow: 0 0 34px rgba(143,216,255,0.6);
  transform: translate(-50%, -50%) scale(1.08);
}
.pf-card:hover .pf-play svg { fill: var(--black); }
.pf-card-idx {
  position: absolute; top: 0.7rem; left: 0.8rem; z-index: 2;
  font-family: var(--font-mono); font-size: 0.52rem; letter-spacing: 0.24em;
  color: rgba(244,248,255,0.85); text-shadow: 0 1px 8px rgba(5,7,11,0.9);
}
.pf-card-meta { display: flex; flex-direction: column; gap: 0.3rem; padding: 0.85rem 0.9rem 0.95rem; }
.pf-card-title {
  font-family: var(--font-mono); font-size: 0.63rem; letter-spacing: 0.12em;
  color: var(--white); line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  min-height: 1.8em;
}
.pf-card-cat { font-family: var(--font-mono); font-size: 0.5rem; letter-spacing: 0.22em; color: var(--cyan); }
.pf-foot {
  display: flex; justify-content: space-between; gap: 1rem;
  margin-top: 1.6rem; font-size: 0.54rem; letter-spacing: 0.26em;
}
.pf-foot span:first-child { color: var(--ice); }

/* ── LIGHTBOX ── */

#lightbox { position: fixed; inset: 0; z-index: 150; display: grid; place-items: center; }
#lightbox[hidden] { display: none; }
.lb-backdrop {
  position: absolute; inset: 0;
  background: rgba(2,4,8,0.88); backdrop-filter: blur(14px);
}
.lb-frame {
  position: relative; z-index: 2;
  width: min(1080px, 92vw);
}
.lb-bar {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 0.7rem; font-size: 0.56rem; letter-spacing: 0.28em;
}
.lb-bar #lb-cat { color: var(--ice); }
.lb-close {
  font-family: var(--font-mono); font-size: 0.56rem; letter-spacing: 0.24em;
  color: var(--white); padding: 0.55rem 1rem;
  border: 1px solid rgba(143,216,255,0.3);
  transition: border-color .3s, background .3s, color .3s;
}
.lb-close:hover { border-color: var(--ice); background: rgba(143,216,255,0.1); }
.lb-video {
  aspect-ratio: 16 / 9; background: #000;
  border: 1px solid rgba(143,216,255,0.22);
  box-shadow: 0 30px 90px rgba(0,0,0,0.7), 0 0 60px rgba(47,91,255,0.18);
}
.lb-video iframe { width: 100%; height: 100%; border: 0; display: block; }
.lb-title { margin-top: 0.8rem; font-size: 0.58rem; letter-spacing: 0.2em; color: var(--dim); }

/* ── 05 CONTACT ── */

#ch-contact { display: flex; align-items: flex-end; }
.contact-inner { width: 100%; padding: 0 6vw 5.5vh; }
.contact-title {
  font-family: var(--font-display); font-weight: 850; font-stretch: 88%;
  font-size: clamp(2.2rem, 6vw, 5.4rem); line-height: 0.98; text-transform: uppercase;
  text-shadow: 0 0 60px rgba(47,91,255,0.3);
}
.contact-cta {
  display: inline-block; margin-top: 2.4rem;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.3em;
  padding: 1.1rem 2.2rem; color: var(--black); background: var(--ice);
  transition: background .35s, box-shadow .35s, transform .35s;
}
.contact-cta:hover { background: var(--white); box-shadow: 0 0 42px rgba(143,216,255,0.45); transform: translateY(-2px); }
.contact-links {
  list-style: none; display: flex; gap: 2.6rem; flex-wrap: wrap;
  margin-top: 3rem; padding-top: 1.6rem; border-top: 1px solid var(--faint);
}
.contact-links a {
  font-size: 0.7rem; letter-spacing: 0.26em; color: var(--dim);
  transition: color .3s;
}
.contact-links a:hover { color: var(--ice); }
.contact-foot {
  margin-top: 2.4rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-size: 0.52rem; letter-spacing: 0.24em; color: rgba(244,248,255,0.25);
}

/* ══════════ SCROLL TRACK ══════════ */

#track { position: relative; z-index: 1; pointer-events: none; }
.spacer { height: 160vh; }
.spacer-xl { height: 320vh; }
#s-contact { height: 130vh; }

/* ══════════ NO WEBGL ══════════ */

#no-webgl {
  position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%);
  z-index: 80; padding: 0.6rem 1.2rem; background: rgba(7,17,31,0.9);
  border: 1px solid var(--faint);
}
body.no-webgl { cursor: auto; }
body.no-webgl #gl { display: none; }
body.no-webgl::before {
  content: ""; position: fixed; inset: 0; z-index: 0;
  background: radial-gradient(ellipse 90% 70% at 50% 40%, #0A1A33 0%, var(--black) 70%);
}

/* ══════════ RESPONSIVE ══════════ */

@media (max-width: 900px) {
  #nav { padding: 1.1rem 1.3rem; }
  .nav-status { display: none; }
  .sound-label { display: none; }
  .nav-right { gap: 0.5rem; }
  #rail { right: 0.9rem; }
  .hero-corner-bl { display: none; }
  .hero-corner-br { left: 0; right: 0; text-align: center; }
  .core-grid { grid-template-columns: 1fr; gap: 2.2rem; padding: 0 7vw; align-content: center; }
  .core-right { order: -1; }
  .portrait { max-width: 200px; margin: 0 auto; }
  .portrait figcaption { display: none; }
  .core-pillars { margin-top: 1.6rem; }
  .core-pillars li { padding: 0.7rem 0.2rem; }
  .exp-list li { grid-template-columns: 40px 1fr; gap: 0.2rem 0.8rem; padding: 0.7rem 0.2rem; }
  .exp-logo { width: 40px; height: 40px; border-radius: 8px; padding: 4px; grid-row: 1 / 3; }
  .exp-year { padding-top: 0; }
  .exp-list p { font-size: 0.78rem; }
  #ch-edu { justify-content: flex-start; }
  .edu-block { margin-top: 1.2rem; }
  .edu-logo { width: 44px; height: 44px; border-radius: 9px; padding: 5px; }
  .edu-info b { font-size: 0.92rem; }
  .edu-info span { font-size: 0.56rem; }
  .pf-grid { max-height: 54vh; overflow-y: auto; }
  .skill-grid { grid-template-columns: 1fr; gap: 1.4rem; margin-top: 1.2rem; }
  .chips li { padding: 0.4rem 0.6rem; font-size: 0.5rem; }
  #ch-skill { padding-bottom: 4vh; }
  .works-head { top: 9vh; }
  .works-display { margin-top: 4vh; }
  .works-desc { min-height: 7.5em; }
  .works-list { position: static; text-align: left; margin-top: 2.5rem; display: flex; flex-wrap: wrap; gap: 0 1.4rem; }
  .pf-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0.7rem; margin-top: 1.3rem; }
  .pf-card-meta { padding: 0.6rem 0.65rem 0.7rem; }
  .pf-tabs { padding-bottom: 0; }
  .pf-tab { padding: 0.55rem 0.7rem; font-size: 0.5rem; }
  .pf-foot { margin-top: 1rem; }
  .lb-frame { width: 94vw; }
  .contact-links { gap: 1.4rem; }
  .spacer { height: 130vh; }
  .spacer-xl { height: 260vh; }
}

@media (prefers-reduced-motion: reduce) {
  .grain, .portrait-scan::after, .scroll-arrow { animation: none; }
}