:root {
  --bg: #faf9f6;
  --surface: #ffffff;
  --ink: #1c2521;
  --muted: #5b655f;
  --mint: #6fd39a;
  --mint-dark: #4b7361;
  --mint-pale: #e7efe9;
  --border: #dfe6e1;
  --warn-bg: #fbf8ef;
  --warn-border: #ecdfb9;
  --warn-text: #8a6d1a;
  --dark-bg: #14181a;
  --max: 760px;
  --max-wide: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Apple SD Gothic Neo', 'Malgun Gothic', 'Noto Sans KR', sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--mint-dark); }

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

/* nav */
nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,249,246,0.92); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}
nav .wrap-wide { display: flex; align-items: center; justify-content: space-between; height: 56px; }
nav .brand { font-weight: 800; letter-spacing: -0.3px; text-decoration: none; color: var(--ink); }
nav .links { display: flex; gap: 18px; font-size: 13.5px; align-items: center; }
nav .links a { text-decoration: none; color: var(--muted); }
nav .links a:hover { color: var(--mint-dark); }
nav .links a.current { color: var(--mint-dark); font-weight: 700; }

/* hero (index) */
header.hero { padding: 72px 0 56px; }
header.hero .eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; color: var(--mint-dark);
  background: var(--mint-pale); padding: 4px 10px; border-radius: 12px; margin-bottom: 14px;
}
header.hero h1 { font-size: 38px; margin: 0 0 6px; letter-spacing: -0.5px; }
header.hero p.lede { font-size: 16px; color: var(--muted); max-width: 620px; margin: 10px 0 22px; }
.contact-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; font-weight: 600;
  padding: 9px 16px; border-radius: 8px; text-decoration: none; border: 1px solid var(--border);
  color: var(--ink); background: var(--surface); transition: all .15s;
}
.btn:hover { border-color: var(--mint-dark); color: var(--mint-dark); }
.btn.primary { background: var(--mint-dark); color: #fff; border-color: var(--mint-dark); }
.btn.primary:hover { background: #3c5d4e; color: #fff; }

/* index project cards */
.card-grid { display: grid; gap: 20px; padding-bottom: 64px; }
.project-card {
  display: grid; grid-template-columns: 280px 1fr; gap: 26px; align-items: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  padding: 22px; text-decoration: none; color: var(--ink); transition: box-shadow .15s, transform .15s;
}
.project-card:hover { box-shadow: 0 10px 30px rgba(20,30,25,0.08); transform: translateY(-2px); }
.project-card .thumb { border-radius: 8px; overflow: hidden; background: var(--dark-bg); }
.project-card .thumb img { width: 100%; height: 180px; object-fit: cover; object-position: top; display: block; }
.project-card .thumb.phone { background: var(--mint-pale); display: flex; align-items: center; justify-content: center; }
.project-card .thumb.phone img { height: 180px; width: auto; object-fit: contain; }
.project-card h3 { font-size: 19px; margin: 0 0 4px; }
.project-card .badge-sm {
  font-size: 10.5px; font-weight: 700; color: #fff; background: var(--mint-dark);
  padding: 2px 8px; border-radius: 9px; margin-left: 6px; vertical-align: middle;
}
.project-card p { color: var(--muted); font-size: 14px; margin: 6px 0 8px; }
.project-card .arrow { color: var(--mint-dark); font-weight: 700; font-size: 13.5px; }
@media (max-width: 640px) {
  .project-card { grid-template-columns: 1fr; }
  .project-card .thumb img, .project-card .thumb.phone img { height: 200px; }
}

/* project page */
.project-hero { padding: 48px 0 8px; }
.project-hero .badge {
  font-size: 12px; font-weight: 700; color: #fff; background: var(--mint-dark);
  padding: 3px 11px; border-radius: 10px; margin-left: 10px; vertical-align: middle;
}
.project-hero h1 { font-size: 30px; margin: 0; display: inline-block; }
.project-meta { color: var(--muted); font-size: 13.5px; margin: 10px 0 6px; }
.one-liner { font-size: 17px; font-weight: 700; color: var(--mint-dark); margin: 6px 0 0; }

.project-body { padding: 28px 0 8px; }
ul.bullets { padding-left: 20px; margin: 0 0 16px; }
ul.bullets li { margin-bottom: 11px; }
.sub { font-weight: 700; }

.tags { margin: 12px 0 16px; }
.tag {
  display: inline-block; font-size: 13px; color: var(--mint-dark); background: var(--mint-pale);
  border: 1px solid var(--border); padding: 4px 11px; border-radius: 11px; margin: 0 6px 6px 0;
}

.result-box {
  font-size: 15px; background: var(--warn-bg); border: 1px solid var(--warn-border);
  padding: 14px 18px; border-radius: 8px; color: var(--warn-text); margin-top: 14px;
}
.result-box .sub { color: #6b5410; }

/* big galleries */
.gallery-section { padding: 36px 0 64px; }
.gallery-section h2.gtitle {
  font-size: 13px; text-transform: uppercase; letter-spacing: 0.6px; color: var(--muted);
  margin: 0 0 18px; text-align: center;
}

.shots-wide { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; background: var(--dark-bg); padding: 28px; border-radius: 18px; }
.shots-wide figure { margin: 0; }
.shots-wide img { width: 100%; height: auto; display: block; border-radius: 8px; cursor: zoom-in; }
.shots-wide figcaption { font-size: 13px; color: #9aa6a0; text-align: center; margin-top: 8px; }
@media (max-width: 760px) { .shots-wide { grid-template-columns: 1fr; } }

.shots-phones { display: flex; gap: 26px; justify-content: center; flex-wrap: wrap; }
.shots-phones figure { margin: 0; flex: 0 1 320px; max-width: 320px; }
.shots-phones img {
  width: 100%; height: auto; display: block; border-radius: 16px; cursor: zoom-in;
  border: 1px solid var(--border); box-shadow: 0 10px 30px rgba(20,30,25,0.08);
}
.shots-phones figcaption { font-size: 13px; color: var(--muted); text-align: center; margin-top: 10px; }

/* prev/next */
.proj-nav { display: flex; justify-content: space-between; padding: 32px 0 64px; border-top: 1px solid var(--border); margin-top: 8px; }
.proj-nav a { text-decoration: none; color: var(--ink); font-size: 14px; }
.proj-nav .dir { color: var(--muted); font-size: 11.5px; display: block; margin-bottom: 2px; }
.proj-nav .next { text-align: right; }

/* footer */
footer { padding: 48px 0 72px; border-top: 1px solid var(--border); color: var(--muted); font-size: 13.5px; }
footer .sub { color: var(--ink); }

/* scroll reveal (Apple-style fade/slide-up on scroll) */
.js .reveal { opacity: 0; transform: translateY(30px); }
.reveal { transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

.js .reveal-img { opacity: 0; transform: translateY(56px) scale(.96); }
.reveal-img { transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.reveal-img.in { opacity: 1; transform: none; }

.js .reveal-stagger > * { opacity: 0; transform: translateY(22px); }
.reveal-stagger > * { transition: opacity .65s cubic-bezier(.2,.7,.2,1), transform .65s cubic-bezier(.2,.7,.2,1); }
.reveal-stagger.in > * { opacity: 1; transform: none; }
.reveal-stagger.in > *:nth-child(1) { transition-delay: .03s; }
.reveal-stagger.in > *:nth-child(2) { transition-delay: .12s; }
.reveal-stagger.in > *:nth-child(3) { transition-delay: .21s; }
.reveal-stagger.in > *:nth-child(4) { transition-delay: .30s; }
.reveal-stagger.in > *:nth-child(5) { transition-delay: .39s; }
.reveal-stagger.in > *:nth-child(6) { transition-delay: .48s; }
.reveal-stagger.in > *:nth-child(7) { transition-delay: .57s; }
.reveal-stagger.in > *:nth-child(8) { transition-delay: .66s; }

@media (prefers-reduced-motion: reduce) {
  .js .reveal, .js .reveal-img, .js .reveal-stagger > * { opacity: 1 !important; transform: none !important; }
}

/* lightbox */
.lightbox {
  position: fixed; inset: 0; background: rgba(10,14,12,0.9); display: none;
  align-items: center; justify-content: center; z-index: 100; padding: 30px; cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 94vw; max-height: 92vh; border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,0.4); }