/* ============================================================
   YOON TAE JUN — cinematic scroll portfolio
   ink black · warm amber · cream
   ============================================================ */

:root {
  --ink: #0a0807;
  --ink-2: #14100c;
  --amber: #f5a020;
  --amber-soft: rgba(245, 160, 32, 0.55);
  --cream: #f4ecdc;
  --cream-dim: rgba(244, 236, 220, 0.55);
  --display: "Anton", "Black Han Sans", sans-serif;
  --display-ko: "Black Han Sans", "Anton", sans-serif;
  --body: "Noto Sans KR", sans-serif;
}

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

html { scroll-behavior: initial; }

html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

body {
  background: var(--ink);
  color: var(--cream);
  font-family: var(--body);
  font-weight: 300;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--amber); color: var(--ink); }

a { color: inherit; text-decoration: none; }

/* ---------- grain ---------- */
.grain {
  position: fixed;
  inset: -100px;
  z-index: 200;
  pointer-events: none;
  opacity: 0.07;
  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='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
  animation: grainShift 0.9s steps(4) infinite;
}
@keyframes grainShift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-30px, 20px); }
  50% { transform: translate(25px, -35px); }
  75% { transform: translate(-15px, -20px); }
  100% { transform: translate(0, 0); }
}

/* ---------- loader ---------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.7s ease, visibility 0.7s;
}
.loader.done { opacity: 0; visibility: hidden; }
.loader-inner { text-align: center; }
.loader-name {
  font-family: var(--display);
  font-size: clamp(3rem, 8vw, 6rem);
  color: var(--amber);
  letter-spacing: 0.05em;
  margin-bottom: 1.4rem;
}
.loader-bar {
  width: min(260px, 60vw);
  height: 2px;
  margin: 0 auto 0.8rem;
  background: rgba(244, 236, 220, 0.12);
}
.loader-bar-fill {
  width: 0%;
  height: 100%;
  background: var(--amber);
  transition: width 0.2s ease;
}
.loader-label {
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  color: var(--cream-dim);
}

/* ---------- nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem clamp(1.2rem, 4vw, 3rem);
  mix-blend-mode: normal;
}
.nav-logo {
  font-family: var(--display);
  font-size: 1.5rem;
  letter-spacing: 0.06em;
}
.nav-logo-dot { color: var(--amber); }
.nav-links { display: flex; gap: clamp(1rem, 3vw, 2.4rem); align-items: center; }
.nav-links a {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  opacity: 0.85;
  transition: opacity 0.25s, color 0.25s;
}
.nav-links a em { font-style: normal; color: var(--cream-dim); font-size: 0.72rem; margin-left: 0.3em; }
.nav-links a:hover { opacity: 1; color: var(--amber); }
.nav-cta {
  border: 1px solid var(--amber-soft);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  color: var(--amber);
}
.nav-cta:hover { background: var(--amber); color: var(--ink) !important; }

/* ---------- section tags ---------- */
.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.4em;
  color: var(--amber);
  margin-bottom: 1rem;
}

/* ============================================================
   HERO
   ============================================================ */
.hero { height: 420vh; position: relative; }
.hero-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}
#orbitCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: var(--ink);
}
.hero-vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 40%, rgba(10, 8, 7, 0.75) 100%),
    linear-gradient(to bottom, rgba(10, 8, 7, 0.55) 0%, transparent 25%, transparent 70%, rgba(10, 8, 7, 0.9) 100%);
  pointer-events: none;
}
.hero-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  pointer-events: none;
  padding: 0 1rem;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.45em;
  color: var(--amber);
  margin-bottom: 1.6rem;
  opacity: 0;
}
.hero-eyebrow-line { width: 48px; height: 1px; background: var(--amber-soft); display: inline-block; }
.hero-title {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(4.2rem, 15.5vw, 15rem);
  line-height: 0.88;
  letter-spacing: 0.01em;
  color: var(--cream);
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
}
.hero-line { display: block; white-space: nowrap; }
.ltr, .ltr-space {
  display: inline-block;
  transform: translateY(120%) rotate(6deg);
  opacity: 0;
  will-change: transform, opacity;
}
.hero-sub {
  margin-top: 1.8rem;
  font-size: clamp(0.95rem, 1.8vw, 1.3rem);
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--cream-dim);
  opacity: 0;
}
.hero-koname {
  position: absolute;
  right: clamp(1rem, 3vw, 2.6rem);
  bottom: 6.5rem;
  writing-mode: vertical-rl;
  font-family: var(--display-ko);
  font-size: 1.1rem;
  letter-spacing: 0.5em;
  color: var(--amber-soft);
}
.hero-scrollcue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.65rem;
  letter-spacing: 0.5em;
  color: var(--cream-dim);
}
.hero-scrollcue-line {
  width: 1px;
  height: 44px;
  background: linear-gradient(to bottom, var(--amber), transparent);
  animation: cueDrop 1.6s ease-in-out infinite;
  transform-origin: top;
}
@keyframes cueDrop {
  0% { transform: scaleY(0); }
  45% { transform: scaleY(1); }
  100% { transform: scaleY(1); opacity: 0; }
}

/* ============================================================
   STATS
   ============================================================ */
.stats {
  position: relative;
  padding: clamp(5rem, 12vh, 9rem) clamp(1.2rem, 5vw, 4rem);
  background: var(--ink);
  border-top: 1px solid rgba(245, 160, 32, 0.14);
  border-bottom: 1px solid rgba(245, 160, 32, 0.14);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}
.stat { text-align: center; position: relative; }
.stat + .stat::before {
  content: "";
  position: absolute;
  left: -1rem;
  top: 15%;
  height: 70%;
  width: 1px;
  background: rgba(244, 236, 220, 0.1);
}
.stat-num {
  font-family: var(--display);
  font-size: clamp(3rem, 6.5vw, 5.6rem);
  line-height: 1;
  color: var(--cream);
}
.stat-num-text {
  font-family: var(--display-ko);
  font-size: clamp(1.8rem, 3.6vw, 3rem);
  line-height: 1.1;
  color: var(--amber);
  padding-top: 0.3em;
}
.stat-plus { color: var(--amber); }
.stat-label {
  margin-top: 0.9rem;
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--cream);
}
.stat-label em {
  display: block;
  font-style: normal;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--cream-dim);
  margin-top: 0.25rem;
  text-transform: uppercase;
}

/* ============================================================
   PILLARS
   ============================================================ */
.pillars { height: 400vh; position: relative; }
.pillars-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.pillars-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9);
}
.pillars-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right, rgba(10, 8, 7, 0.92) 0%, rgba(10, 8, 7, 0.55) 55%, rgba(10, 8, 7, 0.35) 100%),
    linear-gradient(to bottom, rgba(10, 8, 7, 0.8), transparent 30%, transparent 75%, rgba(10, 8, 7, 0.85));
}
.pillars-head {
  position: absolute;
  top: clamp(5.5rem, 12vh, 8rem);
  left: clamp(1.2rem, 5vw, 4rem);
}
.pillars-head h2, .work-head h2 {
  font-family: var(--display-ko);
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 400;
  color: var(--cream);
}
.pillars-head h2 em, .work-head h2 em {
  font-family: var(--display);
  font-style: normal;
  color: var(--amber);
  font-size: 0.55em;
  margin-left: 0.6em;
  letter-spacing: 0.04em;
}
.pillars-list {
  position: relative;
  padding-left: clamp(1.2rem, 5vw, 4rem);
  max-width: 780px;
}
.pillar {
  position: absolute;
  left: clamp(1.2rem, 5vw, 4rem);
  top: 50%;
  transform: translateY(-50%);
  width: min(640px, 82vw);
  opacity: 0;
  visibility: hidden;
}
.pillar-index {
  font-family: var(--display);
  font-size: 1rem;
  color: var(--amber);
  letter-spacing: 0.3em;
  margin-bottom: 1rem;
}
.pillar-title {
  font-family: var(--display-ko);
  font-weight: 400;
  font-size: clamp(3.4rem, 9vw, 7.5rem);
  line-height: 1;
  color: var(--cream);
}
.pillar-title span {
  display: block;
  font-family: var(--display);
  font-size: 0.42em;
  color: var(--amber);
  letter-spacing: 0.08em;
  margin-top: 0.15em;
  text-transform: uppercase;
}
.pillar-desc {
  margin-top: 1.4rem;
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  font-weight: 400;
  color: var(--cream-dim);
  max-width: 30ch;
}
.pillars-progress {
  position: absolute;
  right: clamp(1.2rem, 4vw, 3rem);
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 180px;
  background: rgba(244, 236, 220, 0.15);
}
.pillars-progress-fill {
  width: 100%;
  height: 0%;
  background: var(--amber);
}

/* ============================================================
   WORK
   ============================================================ */
.work {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  padding: clamp(6rem, 14vh, 10rem) clamp(1.2rem, 5vw, 4rem);
  display: flex;
  align-items: center;
}
.work-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85);
}
.work-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(10, 8, 7, 0.95) 0%, rgba(10, 8, 7, 0.72) 40%, rgba(10, 8, 7, 0.82) 100%);
}
.work-inner { position: relative; width: 100%; max-width: 1400px; margin: 0 auto; }
.work-head { margin-bottom: clamp(2.5rem, 6vh, 4.5rem); }
.work-list {
  border-top: 1px solid rgba(244, 236, 220, 0.14);
}
.work-row {
  position: relative;
  display: grid;
  grid-template-columns: clamp(2.4rem, 4vw, 4rem) minmax(0, 1.1fr) minmax(0, 1.3fr) auto;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.5rem);
  padding: clamp(1.6rem, 3vh, 2.4rem) clamp(0.4rem, 1vw, 1rem);
  border-bottom: 1px solid rgba(244, 236, 220, 0.14);
  transition: background 0.4s, padding-left 0.45s cubic-bezier(0.22, 1, 0.36, 1);
  overflow: hidden;
}
.work-row::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(245, 160, 32, 0.14), rgba(245, 160, 32, 0.03) 60%, transparent);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.work-row:hover { padding-left: clamp(1rem, 2vw, 2rem); }
.work-row:hover::before { opacity: 1; }
.row-num {
  font-family: var(--display);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}
.row-main { min-width: 0; }
.row-title {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.9rem, 3.6vw, 3.2rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cream);
  transition: color 0.35s;
  white-space: nowrap;
}
.work-row:hover .row-title { color: var(--amber); }
.row-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.7rem;
}
.row-tags span {
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--cream-dim);
  border: 1px solid rgba(244, 236, 220, 0.22);
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  text-transform: uppercase;
  transition: border-color 0.35s, color 0.35s;
}
.work-row:hover .row-tags span {
  border-color: var(--amber-soft);
  color: var(--cream);
}
.row-pitch {
  font-size: 0.95rem;
  line-height: 1.7;
  font-weight: 400;
  color: var(--cream-dim);
  max-width: 46ch;
}
.row-link {
  justify-self: end;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--amber);
  text-transform: uppercase;
  white-space: nowrap;
}
.row-link em {
  font-style: normal;
  display: inline-block;
  margin-left: 0.3em;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.work-row:hover .row-link em { transform: translate(4px, -4px); }

/* ============================================================
   FINALE
   ============================================================ */
.finale {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    radial-gradient(ellipse 70% 55% at 50% 115%, rgba(245, 160, 32, 0.16), transparent),
    var(--ink);
  padding: 6rem 1.2rem;
}
.finale-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.5em;
  color: var(--amber);
  margin-bottom: 1.6rem;
}
.finale-title {
  font-family: var(--display-ko);
  font-weight: 400;
  font-size: clamp(2.6rem, 8vw, 6.8rem);
  line-height: 1.12;
  color: var(--cream);
}
.finale-line { display: block; overflow: hidden; }
.finale-line { transform: translateY(0); }
.finale-cta {
  margin-top: 3rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 1rem 2.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), background 0.35s, color 0.35s, border-color 0.35s;
}
.btn:hover { transform: translateY(-4px); }
.btn-solid { background: var(--amber); color: var(--ink); }
.btn-solid:hover { background: var(--cream); }
.btn-ghost {
  border: 1px solid rgba(244, 236, 220, 0.3);
  color: var(--cream);
}
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid rgba(244, 236, 220, 0.1);
  padding: 3rem clamp(1.2rem, 5vw, 4rem) 2.4rem;
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}
.footer-name {
  font-family: var(--display);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  letter-spacing: 0.03em;
}
.footer-name span {
  font-family: var(--display-ko);
  color: var(--amber);
  font-size: 0.6em;
  margin-left: 0.6em;
}
.footer-links { display: flex; gap: clamp(1rem, 3vw, 2.2rem); flex-wrap: wrap; }
.footer-links a {
  font-size: 0.85rem;
  color: var(--cream-dim);
  letter-spacing: 0.05em;
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--amber); }
.footer-meta { font-size: 0.72rem; color: rgba(244, 236, 220, 0.35); letter-spacing: 0.08em; }

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 2.6rem 1rem; }
  .stat + .stat::before { display: none; }
  .work-row {
    grid-template-columns: 2rem minmax(0, 1fr);
    grid-template-areas: "num main" "pitch pitch" "link link";
    row-gap: 0.8rem;
  }
  .row-num { grid-area: num; }
  .row-main { grid-area: main; }
  .row-title { white-space: normal; }
  .row-pitch { grid-area: pitch; }
  .row-link { grid-area: link; justify-self: start; }
  .hero-koname { display: none; }
  .nav-links a em { display: none; }
}