/*
  LINUS KIM PORTFOLIO — DARK WARM LUXE
  Champagne gold · Velvet green · Editorial split layout
*/

/* ==================== VARIABLES ==================== */
:root {
  --bg: #141311;
  --surface: #1C1B19;
  --surface-2: #232220;
  --surface-3: #2B2A27;

  --text-1: #EDE9E3;
  --text-2: #B8B3AB;
  --text-3: #807B73;

  --accent: #C8A96E;
  --accent-dim: #B89858;
  --accent-bright: #DDBF8A;
  --accent-bg: rgba(200,169,110,0.06);
  --accent-glow: rgba(200,169,110,0.10);

  --accent-2: #3B5249;
  --accent-2-dim: #2D4038;
  --accent-2-bg: rgba(59,82,73,0.12);

  --border: #262523;
  --border-2: #363430;
  --border-accent: rgba(200,169,110,0.2);

  /* legacy aliases for tools page */
  --accent-primary: #C8A96E;
  --border-color: #1E1D1B;
  --text-primary: #EDE9E3;
  --text-secondary: #B8B3AB;
  --text-tertiary: #807B73;
  --border-subtle: #262523;
  --border-medium: #363430;
  --bg-base: #141311;
  --surface-subtle: #232220;
  --accent-light: rgba(200,169,110,0.06);

  --shadow-s: 0 2px 10px rgba(0,0,0,.35);
  --shadow-m: 0 8px 30px rgba(0,0,0,.45);
  --shadow-l: 0 16px 50px rgba(0,0,0,.55);
  --shadow-glow: 0 0 40px rgba(200,169,110,.06);

  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 18px;

  --font-d: 'Space Grotesk', sans-serif;
  --font-b: 'Inter', sans-serif;
  --font-m: 'SF Mono','Fira Code','Courier New', monospace;

  --ease: cubic-bezier(.16,1,.3,1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  background: var(--bg);
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) var(--bg);
  cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32"><g fill="%23E8E4DE"><rect x="7" y="2" width="4" height="10"/><rect x="12" y="2" width="4" height="12"/><rect x="17" y="2" width="4" height="11"/><rect x="22" y="3" width="4" height="8"/><rect x="7" y="12" width="20" height="10" rx="2"/><rect x="10" y="14" width="2" height="2" fill="%23C8A96E"/><rect x="15" y="14" width="2" height="2" fill="%23C8A96E"/><rect x="20" y="14" width="2" height="2" fill="%23C8A96E"/></g></svg>'), auto;
}

body {
  font-family: var(--font-b);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-1);
  background: var(--bg);
  overflow-x: hidden;
  cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32"><g fill="%23E8E4DE"><rect x="7" y="2" width="4" height="10"/><rect x="12" y="2" width="4" height="12"/><rect x="17" y="2" width="4" height="11"/><rect x="22" y="3" width="4" height="8"/><rect x="7" y="12" width="20" height="10" rx="2"/><rect x="10" y="14" width="2" height="2" fill="%23C8A96E"/><rect x="15" y="14" width="2" height="2" fill="%23C8A96E"/><rect x="20" y="14" width="2" height="2" fill="%23C8A96E"/></g></svg>'), auto;
}

body.clicking {
  cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32"><g fill="%23E8E4DE"><rect x="7" y="10" width="4" height="4"/><rect x="12" y="8" width="4" height="6"/><rect x="17" y="9" width="4" height="5"/><rect x="22" y="11" width="4" height="3"/><rect x="7" y="12" width="20" height="10" rx="2"/><rect x="10" y="14" width="2" height="2" fill="%23C8A96E"/><rect x="15" y="14" width="2" height="2" fill="%23C8A96E"/><rect x="20" y="14" width="2" height="2" fill="%23C8A96E"/></g></svg>'), auto;
}

::-webkit-scrollbar { width:5px; }
::-webkit-scrollbar-track { background:var(--bg); }
::-webkit-scrollbar-thumb { background:var(--border-2); border-radius:4px; }
::-webkit-scrollbar-thumb:hover { background:var(--accent); }

img { display:block; max-width:100%; }
ul,ol { list-style:none; }

/* ==================== TYPOGRAPHY ==================== */
h1,h2,h3,h4,h5,h6 { font-family:var(--font-d); color:var(--text-1); font-weight:700; line-height:1.1; }
p { color:var(--text-2); }
strong { font-weight:600; color:var(--text-1); }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color .2s;
  cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32"><g fill="%23C8A96E"><rect x="7" y="2" width="4" height="10"/><rect x="12" y="2" width="4" height="12"/><rect x="17" y="2" width="4" height="11"/><rect x="22" y="3" width="4" height="8"/><rect x="7" y="12" width="20" height="10" rx="2"/><rect x="10" y="14" width="2" height="2" fill="%230D0C0B"/><rect x="15" y="14" width="2" height="2" fill="%230D0C0B"/><rect x="20" y="14" width="2" height="2" fill="%230D0C0B"/><rect x="11" y="18" width="2" height="2" fill="%230D0C0B"/><rect x="13" y="19" width="6" height="2" fill="%230D0C0B"/><rect x="19" y="18" width="2" height="2" fill="%230D0C0B"/></g></svg>'), pointer;
}
a:hover { color: var(--accent-bright); }

/* ==================== SCROLL PROGRESS ==================== */
.scroll-progress {
  position:fixed; top:0; left:0; height:2px; width:0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  z-index:1100;
}

/* ==================== NAV ==================== */
#nav {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  display:flex; align-items:center; justify-content:space-between;
  padding: 0 clamp(24px, 4vw, 60px);
  height: 60px;
  background: rgba(20,19,17,.5);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all .4s;
}
#nav.scrolled {
  background: rgba(20,19,17,.92);
  border-bottom-color: var(--border);
}
.nav-links, .nav-socials { display:flex; gap:32px; align-items:center; }
.nav-links li, .nav-socials li { display:inline-block; }
.nav-links a {
  font-family:var(--font-b); font-size:12px; font-weight:500;
  text-transform:uppercase; letter-spacing:.14em;
  color:var(--text-3); padding-bottom:2px;
  position:relative; transition: color .3s;
}
.nav-links a::after {
  content:''; position:absolute; bottom:0; left:0;
  width:0; height:1px; background:var(--accent);
  transition: width .4s var(--ease);
}
.nav-links a:hover::after, .nav-links a.active::after { width:100%; }
.nav-links a:hover, .nav-links a.active { color:var(--text-1); }
.nav-socials a {
  font-size:24px; color:var(--text-3);
  transition: color .2s, transform .2s;
}
.nav-socials a:hover { color:var(--accent); transform:translateY(-2px); }

/* Nav resume link */
.nav-resume {
  color:var(--accent) !important;
}

/* Hamburger toggle — hidden on desktop */
.nav-toggle {
  display:none;
  flex-direction:column;
  background:none; border:none;
  width:24px; height:18px;
  position:relative;
  cursor:pointer;
  z-index:2;
  padding:0;
}
.nav-toggle span {
  position:absolute; left:0;
  width:100%; height:2px;
  background:var(--text-1);
  border-radius:1px;
  transition:all .3s var(--ease);
}
.nav-toggle span:nth-child(1) { top:0; }
.nav-toggle span:nth-child(2) { top:8px; }
.nav-toggle span:nth-child(3) { top:16px; }
.nav-toggle.open span:nth-child(1) { top:8px; transform:rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity:0; }
.nav-toggle.open span:nth-child(3) { top:8px; transform:rotate(-45deg); }

/* ==================== HERO ==================== */
.hero {
  position:relative;
  min-height: 100vh;
  display:flex; align-items:center;
  padding: 0 clamp(32px, 8vw, 120px);
  overflow:hidden;
}
.hero-glow {
  position:absolute; top:35%; left:25%;
  width:800px; height:800px;
  background: radial-gradient(circle, rgba(200,169,110,.04) 0%, transparent 60%);
  pointer-events:none;
  transform:translate(-50%,-50%);
}
.hero-inner { position:relative; z-index:1; width:100%; max-width:900px; }

.hero-eyebrow {
  display:block;
  font-family:var(--font-m); font-size:13px; font-weight:400;
  text-transform:uppercase; letter-spacing:.3em;
  color:var(--accent);
  margin-bottom:24px;
}
.hero-title {
  font-size: clamp(52px, 11vw, 130px);
  font-weight:700; letter-spacing:-.05em;
  line-height:.92;
  color:var(--text-1);
}
.hero-name-row {
  display:flex; align-items:center; gap:0;
  margin-top:8px;
  margin-bottom:40px;
}
.hero-rule {
  flex:1; height:1px;
  background:var(--border-2);
  margin:0 clamp(20px,4vw,48px);
}
.hero-kr {
  font-family:var(--font-d);
  font-size:clamp(18px,2.5vw,28px);
  font-weight:400; color:var(--text-3);
  letter-spacing:.06em; white-space:nowrap;
}
.hero-desc {
  font-size:clamp(15px,1.4vw,18px);
  line-height:1.7; color:var(--text-2);
  max-width:480px;
}

/* hero stagger */
[data-animate] { opacity:0; transform:translateY(20px); animation: heroIn .7s var(--ease) both; }
[data-animate="1"] { animation-delay:.1s; }
[data-animate="2"] { animation-delay:.2s; }
[data-animate="3"] { animation-delay:.35s; }
[data-animate="4"] { animation-delay:.5s; }
[data-animate="5"] { animation-delay:.75s; }
@keyframes heroIn {
  from { opacity:0; transform:translateY(20px); }
  to   { opacity:1; transform:translateY(0); }
}

/* scroll cta */
.scroll-cta {
  position:absolute; bottom:32px; left:50%;
  transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:8px;
  text-decoration:none;
}
.scroll-cta span {
  font-family:var(--font-m); font-size:11px;
  letter-spacing:.3em; text-transform:uppercase;
  color:var(--text-3);
}
.scroll-cta:hover span { color:var(--accent); }
.scroll-line {
  width:1px; height:32px;
  position:relative; overflow:hidden;
  background:var(--border-2);
}
.scroll-line::after {
  content:''; position:absolute; top:-100%; left:0;
  width:100%; height:100%;
  background:var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%  { top:-100%; }
  50% { top:0; }
  100%{ top:100%; }
}

/* ==================== MARQUEE ==================== */
.marquee {
  padding:16px 0;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  overflow:hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}
.marquee-track {
  display:flex; gap:0;
  white-space:nowrap;
  animation: scroll-left 40s linear infinite;
  width: max-content;
}
.marquee-track span {
  font-family:var(--font-d);
  font-size:14px; font-weight:500;
  color:var(--text-3);
  text-transform:uppercase;
  letter-spacing:.08em;
}
.marquee-sep {
  margin:0 20px; color:var(--border-2);
}
@keyframes scroll-left {
  from { transform:translateX(0); }
  to   { transform:translateX(-50%); }
}

/* ==================== LAYOUT ==================== */
.container {
  max-width:1120px;
  margin:0 auto;
  padding:0 clamp(24px, 4vw, 60px);
}
.sect { padding: clamp(48px,6vw,80px) 0; }
.sect-contact { padding-bottom: clamp(40px,6vw,64px); }
.container--spaced { margin-top:64px; }

/* ==================== SECTION HEADERS ==================== */
.sect-num {
  display:block;
  font-family:var(--font-m); font-size:13px;
  color:var(--accent); letter-spacing:.2em;
  margin-bottom:10px;
}
.sect-title {
  font-size: clamp(32px,5vw,52px);
  letter-spacing:-.03em;
}
.sect-title::after {
  content:''; display:block;
  width:36px; height:2px;
  background:var(--accent);
  margin-top:16px;
}
.sect-header { margin-bottom:56px; }

/* ==================== SPLIT (About) ==================== */
.split {
  display:grid;
  grid-template-columns: 260px 1fr;
  gap: clamp(40px, 6vw, 100px);
  align-items:start;
}
.split-left { position:sticky; top:100px; }
.split-right { display:flex; flex-direction:column; gap:20px; }
.body-lg { font-size:18px; line-height:1.8; color:var(--text-2); }

/* About resume CTA */
.btn-resume {
  display:inline-flex; align-items:center; gap:8px;
  padding:10px 24px;
  border:1px solid var(--accent);
  border-radius:var(--r-sm);
  font-family:var(--font-b); font-size:13px; font-weight:500;
  text-transform:uppercase; letter-spacing:.1em;
  color:var(--accent);
  transition: background .3s, color .3s, transform .3s;
  width:fit-content;
}
.btn-resume:hover {
  background:var(--accent);
  color:var(--bg);
  transform:translateY(-2px);
}
.hint {
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; color:var(--text-3);
  font-style:italic; margin-top:8px;
}
.hint i { color:var(--accent); font-size:14px; }

/* ==================== SHOWCASE (DRACO) ==================== */
.showcase { margin-top:16px; }
.showcase-head { margin-bottom:24px; }
.showcase-name {
  font-size: clamp(28px,4vw,48px);
  letter-spacing:-.03em;
  margin-bottom:6px;
}
.showcase-sub {
  font-family:var(--font-m);
  font-size:14px; color:var(--text-3);
  letter-spacing:.04em;
}
.showcase-viewer-wrap {
  width:100%;
  margin: 0 auto;
  max-width: 1200px;
  padding: 0 clamp(24px,4vw,60px);
}
.showcase-viewer {
  width:100%;
  height: clamp(360px, 55vw, 600px);
  background: var(--surface);
  border-radius: var(--r-lg);
  border:1px solid var(--border);
  overflow:hidden;
}
.showcase-instruction {
  font-family:var(--font-m);
  font-size:13px; color:var(--text-3);
  letter-spacing:.06em;
  text-align:center;
  margin:12px 0 28px;
}
.showcase-body {
  max-width:640px;
}
.showcase-body p {
  font-size:16px; line-height:1.75;
  margin-bottom:16px;
}

/* ==================== BASE CARD ==================== */
.card {
  background:var(--surface);
  border-radius: var(--r-md);
  padding: clamp(24px,3vw,36px);
  border:1px solid var(--border);
  position:relative;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .4s;
}
.card:hover {
  transform:translateY(-6px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-l), var(--shadow-glow);
}
.card h3 { font-size:22px; letter-spacing:-.01em; margin-bottom:6px; }
.card-meta {
  font-family:var(--font-m); font-size:13px;
  color:var(--text-3); letter-spacing:.04em;
  margin-bottom:14px;
}
.card p { font-size:15px; line-height:1.7; margin-bottom:8px; }

/* ==================== PROJECT ROWS (Split Showcase) ==================== */
.project-list {
  display:flex;
  flex-direction:column;
  gap: clamp(48px, 8vw, 80px);
}
.project-row {
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items:center;
}
.project-row:nth-child(even) .project-media { order:2; }
.project-row:nth-child(even) .project-info { order:1; }

.project-media {
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:4/3;
  position:relative;
  background:var(--surface);
  border:1px solid var(--border);
}
.project-media img {
  width:100%; height:100%;
  object-fit:cover;
  transition: transform .7s var(--ease), filter .5s;
  filter: brightness(.85) saturate(.95);
}
.project-row:hover .project-media img {
  transform:scale(1.03);
  filter: brightness(1) saturate(1);
}
.project-media--accent {
  display:flex;
  align-items:center;
  justify-content:center;
  background: linear-gradient(135deg, var(--accent-2-bg), rgba(59,82,73,0.04));
  border-color: rgba(59,82,73,0.18);
}
.project-index {
  font-family:var(--font-d);
  font-size: clamp(64px, 10vw, 120px);
  font-weight:700;
  color: var(--accent-2);
  letter-spacing:-.05em;
  opacity:.4;
}
.project-info h3 {
  font-family:var(--font-d);
  font-size: clamp(22px, 2.5vw, 28px);
  letter-spacing:-.02em;
  margin-bottom:6px;
  color:var(--text-1);
}
.project-info p {
  font-size:16px; line-height:1.75;
  margin-bottom:8px;
}

/* ==================== TAGS ==================== */
.tag-row { display:flex; flex-wrap:wrap; gap:6px; margin-top:16px; }
.tag {
  padding:4px 12px;
  background:var(--accent-bg);
  color:var(--accent);
  border-radius:5px;
  font-family:var(--font-m); font-size:12px; font-weight:500;
  text-transform:uppercase; letter-spacing:.07em;
  transition:all .25s;
  border:1px solid transparent;
}
.tag:hover {
  background:var(--accent); color:var(--bg);
  border-color:var(--accent);
}

/* (grids removed — using split project rows instead) */

/* ==================== CONTACT ==================== */
.contact-heading {
  font-size: clamp(44px, 9vw, 100px);
  letter-spacing:-.04em;
  line-height:.95;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.contact-grid {
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:40px;
}
.contact-col { display:flex; flex-direction:column; gap:8px; }
.contact-label {
  font-family:var(--font-m); font-size:13px;
  text-transform:uppercase; letter-spacing:.2em;
  color:var(--text-3);
  margin-bottom:4px;
}
.contact-link {
  font-size:16px; color:var(--text-2);
  text-decoration:none;
  transition:color .2s;
  display:block;
}
a.contact-link:hover { color:var(--accent); }
.contact-socials { display:flex; gap:10px; flex-wrap:wrap; }
.social-btn {
  display:inline-flex; align-items:center; gap:6px;
  padding:8px 16px;
  border:1px solid var(--border-2);
  border-radius:var(--r-sm);
  font-family:var(--font-b); font-size:13px; font-weight:500;
  color:var(--text-2);
  transition:all .3s;
}
.social-btn:hover {
  border-color:var(--accent);
  color:var(--accent);
  background:var(--accent-bg);
  transform:translateY(-2px);
  box-shadow: var(--shadow-s), var(--shadow-glow);
}

/* ==================== TOAST ==================== */
.toast-notification {
  position:fixed; bottom:24px; right:24px;
  background:var(--surface-2);
  border:1px solid var(--border-2);
  color:var(--text-1);
  padding:12px 22px;
  border-radius:var(--r-sm);
  font-size:14px;
  box-shadow:var(--shadow-m);
  z-index:10000;
  animation: toastIn .35s var(--ease);
}
.toast-notification.hiding { animation: toastOut .3s ease forwards; }
@keyframes toastIn {
  from { transform:translateY(16px) scale(.97); opacity:0; }
  to   { transform:translateY(0) scale(1); opacity:1; }
}
@keyframes toastOut {
  from { transform:translateY(0) scale(1); opacity:1; }
  to   { transform:translateY(8px) scale(.97); opacity:0; }
}

/* ==================== FOOTER ==================== */
.footer {
  padding:40px 0;
  border-top:1px solid var(--border);
  text-align:center;
}
.footer p {
  font-family:var(--font-m);
  font-size:13px; color:var(--text-3);
  letter-spacing:.04em;
}

/* ==================== SCROLL REVEAL ==================== */
[data-reveal] {
  opacity:0; transform:translateY(28px);
  transition: opacity .65s var(--ease), transform .65s var(--ease);
}
[data-reveal].revealed { opacity:1; transform:translateY(0); }

/* ==================== RESPONSIVE ==================== */
@media (max-width:1024px) {
  .contact-grid { grid-template-columns:1fr 1fr; }
}

@media (max-width:768px) {
  /* Mobile nav */
  .nav-toggle { display:flex; margin-left:auto; }
  .nav-socials { display:none; }
  .nav-links {
    position:fixed; inset:0;
    z-index:1;
    background:rgba(20,19,17,.98);
    backdrop-filter:blur(24px);
    -webkit-backdrop-filter:blur(24px);
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:36px;
    opacity:0;
    visibility:hidden;
    transition:opacity .35s, visibility .35s;
  }
  .nav-links.open { opacity:1; visibility:visible; }
  .nav-links a {
    font-size:18px; letter-spacing:.18em;
  }

  .hero { padding:0 clamp(24px,6vw,48px); min-height:90vh; }
  .hero-title { font-size:clamp(44px,14vw,72px); }
  .hero-name-row { flex-wrap:wrap; }
  .hero-rule { display:none; }
  .hero-kr { margin-top:4px; }

  .split { grid-template-columns:1fr; gap:32px; }
  .split-left { position:static; }

  .project-row { grid-template-columns:1fr; gap:24px; }
  .project-row:nth-child(even) .project-media,
  .project-row:nth-child(even) .project-info { order:unset; }
  .project-media { aspect-ratio:16/10; }

  .contact-grid { grid-template-columns:1fr; gap:28px; }

  .sect { padding:clamp(40px,6vw,64px) 0; }
}

/* Touch devices — show images at full brightness */
@media (hover:none) {
  .project-media img { filter:brightness(1) saturate(1); }
}

@media (max-width:480px) {
  .hero-title { font-size:clamp(36px,16vw,52px); }
  .card { padding:20px; }
  .sect { padding:36px 0; }
  .nav-links { gap:16px; }
  .nav-links a { font-size:10px; letter-spacing:.1em; }
}