/* ==========================================================================
   Yeonwoo Cho — Video Editor Portfolio
   Palette: Black / White / Sky Blue — dark theme, simple, not overly decorative
   ========================================================================== */

:root {
  --color-bg: #0b0d10;              /* page background */
  --color-surface: #16191e;         /* card / alternate-section surface */
  --color-border: rgba(255, 255, 255, 0.12);
  --color-text: #f4f6f8;            /* primary text */
  --color-text-muted: #9aa3ac;      /* secondary / muted text */
  --color-white: #ffffff;           /* literal white — buttons, icons on dark */
  --color-sky: #38bdf8;
  --color-sky-dark: #0ea5e9;
  --color-sky-tint: rgba(56, 189, 248, 0.18);

  --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-ko: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --container-w: 1160px;
  --radius: 14px;
  --transition: 0.25s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-en);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

html[lang="ko"] body { font-family: var(--font-ko); }

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

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

ul { list-style: none; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), background var(--transition), color var(--transition), box-shadow var(--transition), border-color var(--transition);
  border: 1.5px solid transparent;
}

.btn-primary {
  background: var(--color-white);
  color: var(--color-bg);
}
.btn-primary:hover {
  background: var(--color-sky);
  color: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(56, 189, 248, 0.32);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--color-white);
}
.btn-outline:hover {
  background: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-bg);
  transform: translateY(-2px);
}

.btn-lg { padding: 16px 36px; font-size: 1.05rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 13, 16, 0.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.main-nav {
  display: flex;
  gap: 36px;
}

.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--color-sky);
  transition: width var(--transition);
}

.main-nav a:hover::after { width: 100%; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--color-text-muted);
}

.lang-toggle .lang-sep { color: rgba(255, 255, 255, 0.25); }

.lang-toggle .active {
  color: var(--color-sky);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

/* ---------- Intro / Hero ---------- */
.intro {
  position: relative;
  min-height: calc(100vh - 72px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 90px 0;
  overflow: hidden;
  text-align: center;
  background: var(--color-bg);
}

.intro-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.intro-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(700px 340px at 85% 8%, var(--color-sky-tint), transparent 70%),
    linear-gradient(180deg, rgba(11, 13, 16, 0.55) 0%, rgba(11, 13, 16, 0.72) 55%, var(--color-bg) 100%);
}

.intro-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* -- role eyebrow -- */
.intro-role {
  color: var(--color-sky);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.82rem;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.intro.in-view .intro-role { opacity: 1; transform: translateY(0); }

/* -- name stage: wordmark + tagline -- */
.name-stage {
  position: relative;
  margin: 0.85em 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: clamp(2.1rem, 8.5vw, 6.6rem);
  line-height: 0.86;
}

.intro-bg-text {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.name-line {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  font-weight: 900;
  font-size: 1em;
  letter-spacing: -0.03em;
  color: var(--color-text);
  padding: 0 0.05em;
}

.name-tagline {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  margin-top: 0.7em;
  font-size: clamp(0.75rem, 1.9vw, 1.15rem);
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--color-sky);
}

.name-line .letter,
.name-tagline .letter {
  display: inline-block;
  transform: translateY(115%);
  opacity: 0;
  transition: transform 0.85s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s ease;
}

.intro.in-view .name-line .letter,
.intro.in-view .name-tagline .letter {
  transform: translateY(0);
  opacity: 1;
}

/* -- sub copy + actions -- */
.intro-sub {
  margin-top: 26px;
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 560px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease 0.9s, transform 0.7s ease 0.9s;
}
.intro.in-view .intro-sub { opacity: 1; transform: translateY(0); }

.hero-actions {
  margin-top: 34px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease 1.05s, transform 0.7s ease 1.05s;
}
.intro.in-view .hero-actions { opacity: 1; transform: translateY(0); }

/* -- scroll cue -- */
.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
  opacity: 0;
  z-index: 2;
  transition: opacity 0.7s ease 1.3s;
}
.intro.in-view .scroll-cue { opacity: 1; }

.scroll-cue-dot {
  width: 4px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-sky);
  animation: scrollDot 1.8s ease-in-out infinite;
}

@keyframes scrollDot {
  0%   { transform: translateY(0); opacity: 1; }
  70%  { transform: translateY(10px); opacity: 0; }
  71%  { transform: translateY(0); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

/* ---------- Section shared ---------- */
.section-head { margin-bottom: 44px; }

.section-eyebrow {
  color: var(--color-sky);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 10px;
}
.section-eyebrow.light { color: var(--color-sky); }

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

/* ---------- Career ---------- */
.career { position: relative; overflow: hidden; padding: 100px 0 90px; }

.career-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.career-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    180deg,
    rgba(11, 13, 16, 0.65) 0%,
    rgba(11, 13, 16, 0.82) 50%,
    rgba(11, 13, 16, 0.94) 100%
  );
}

.career .container { position: relative; z-index: 2; }

.career-list {
  max-width: 800px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.career-year-heading {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-sky);
  letter-spacing: 0.02em;
}

.career-year-heading:not(:first-child) { margin-top: 16px; }

.career-item,
.career-year-heading,
.award-item {
  opacity: 0;
  transform: translateX(-36px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1), transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}

.career-item.reveal-in,
.career-year-heading.reveal-in,
.award-item.reveal-in {
  opacity: 1;
  transform: translateX(0);
}

.career-item {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 10px;
  padding-left: 20px;
  position: relative;
}

.career-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-sky);
}

.career-role {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
}

.career-org {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.career-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 2px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}

.career-badge:hover {
  border-color: var(--color-sky);
  box-shadow: 0 6px 18px rgba(56, 189, 248, 0.22);
  transform: translateY(-1px);
}

.career-badge-icon {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.career-badge:hover .career-badge-icon { color: var(--color-sky); }

.career-desc {
  flex-basis: 100%;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  max-width: 620px;
}

.career-date {
  flex-basis: 100%;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.awards-heading {
  margin-top: 56px;
  margin-bottom: 18px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.awards-list { display: flex; flex-direction: column; gap: 14px; }

.award-item {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 10px;
  padding-left: 20px;
  position: relative;
}

.award-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-sky);
}

.award-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
}

.award-org {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---------- Work ---------- */
.work { padding: 100px 0; }

.filter-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.filter-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

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

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

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.5);
  border-color: var(--color-sky);
}

.project-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.project-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,13,16,0) 40%, rgba(11,13,16,0.6) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.project-card:hover .project-thumb::before { opacity: 1; }

.play-badge {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.85);
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
}
.project-card:hover .play-badge {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.play-badge svg { width: 20px; height: 20px; fill: #0b0d10; margin-left: 3px; }

.platform-tag {
  position: absolute;
  top: 14px; left: 14px;
  background: rgba(11,13,16,0.78);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 5px 11px;
  border-radius: 999px;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 5px;
}

.project-info { padding: 18px 20px 22px; }

.project-category {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--color-sky);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.project-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
}

.project-role {
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ---------- About ---------- */
.about {
  position: relative;
  overflow: hidden;
  padding: 100px 0;
  background: var(--color-surface);
}

.about-stars {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.about-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
}

.about-body {
  color: var(--color-text-muted);
  font-size: 1.02rem;
  margin-top: 18px;
  max-width: 520px;
}

.stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
}

.stat { display: flex; flex-direction: column; }

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-text);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.about-skills {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px;
  align-self: start;
}

.skills-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.skills-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
}
.skills-list li:last-child { border-bottom: none; }

/* ---------- Contact ---------- */
.contact {
  padding: 110px 0;
  background: var(--color-bg);
  color: var(--color-text);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.contact-title {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.contact-sub {
  color: var(--color-text-muted);
  max-width: 480px;
  margin: 0 auto 36px;
  font-size: 1.02rem;
}

.contact .btn-primary {
  background: var(--color-sky);
  color: var(--color-bg);
}
.contact .btn-primary:hover {
  background: var(--color-white);
  color: var(--color-bg);
}

.social-links {
  margin-top: 44px;
  display: flex;
  justify-content: center;
  gap: 28px;
}

.social-links a {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.92rem;
  transition: color var(--transition);
}
.social-links a:hover { color: var(--color-sky); }

/* ---------- Footer ---------- */
.site-footer {
  padding: 28px 0;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 10px;
}

.back-to-top { color: var(--color-text-muted); transition: color var(--transition); }
.back-to-top:hover { color: var(--color-sky); }

/* ---------- Cinematic portfolio list (hub page) ---------- */
.cine { padding: 40px 0 130px; }

.cine-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.cine-heading {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.cine-caption {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.cine-list { border-top: 1px solid var(--color-border); }

.cine-item {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
  height: 96px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: height 0.7s cubic-bezier(0.25, 1, 0.5, 1);
}

.cine-item-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.12);
  transition: opacity 0.7s ease, transform 1s ease;
}

.cine-item-bg--placeholder {
  background: linear-gradient(135deg, var(--color-surface), var(--color-bg));
}

.cine-item-overlay {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(11, 13, 16, 0.15) 0%, rgba(11, 13, 16, 0.55) 55%, rgba(11, 13, 16, 0.85) 100%);
  opacity: 0;
  transition: opacity 0.7s ease;
}

.cine-item-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
  padding: 0 20px;
}

.cine-item-left {
  display: flex;
  align-items: center;
  gap: 22px;
  min-width: 0;
}

.cine-item-id {
  font-size: 0.82rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
  transition: color 0.5s ease;
}

.cine-item-titles { display: flex; flex-direction: column; min-width: 0; }

.cine-item-title {
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--color-text);
  transition: transform 0.7s cubic-bezier(0.25, 1, 0.5, 1), color 0.5s ease;
}

.cine-item-loc-mobile {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.cine-item-right { display: flex; align-items: center; gap: 16px; }

.cine-item-loc {
  display: none;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: transparent;
  transform: translateY(28px);
  opacity: 0;
  transition: transform 0.7s ease, opacity 0.7s ease, color 0.5s ease;
}

.cine-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all 0.5s ease;
}

.cine-item-icon svg {
  width: 17px;
  height: 17px;
  transition: transform 0.5s ease;
}

/* -- hover state (desktop) -- */
@media (min-width: 768px) {
  .cine-item:hover { height: 400px; }
  .cine-item:hover .cine-item-bg { opacity: 1; transform: scale(1); }
  .cine-item:hover .cine-item-overlay { opacity: 1; }
  .cine-item:hover .cine-item-title { transform: translateY(-6px); color: #ffffff; }
  .cine-item:hover .cine-item-id { color: rgba(255, 255, 255, 0.7); }
  .cine-item:hover .cine-item-icon {
    border-color: #ffffff;
    background: #ffffff;
    color: var(--color-bg);
    transform: scale(1.08);
  }
  .cine-item:hover .cine-item-icon svg { transform: rotate(-45deg); }
  .cine-item:hover .cine-item-loc { color: #ffffff; transform: translateY(0); opacity: 1; }

  .cine-item-loc { display: block; }
  .cine-item-loc-mobile { display: none; }
  .cine-item-content { padding: 0 48px; }
  .cine-item-left { gap: 48px; }
  .cine-item-title { font-size: 3rem; }
}

/* -- reserved / not-yet-filled slots read as muted, non-interactive -- */
.cine-item--reserved { cursor: default; }
.cine-item--reserved .cine-item-title,
.cine-item--reserved .cine-item-id,
.cine-item--reserved .cine-item-loc-mobile { opacity: 0.4; }
@media (min-width: 768px) {
  .cine-item--reserved:hover { height: 96px; }
  .cine-item--reserved .cine-item-loc { display: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .about-inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
  .project-grid { grid-template-columns: 1fr; }
  .stats { gap: 24px; flex-wrap: wrap; }

  .site-header.nav-open .main-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--color-bg);
    padding: 20px 24px 28px;
    border-bottom: 1px solid var(--color-border);
    gap: 18px;
  }
}