/* pytmux 랜딩/가이드 공용 스타일 — 다크 터미널 테마(Textual textual-dark 팔레트 근사) */
:root {
  --bg: #14141f;
  --bg-soft: #1c1c2b;
  --bg-card: #21212f;
  --bg-elev: #282838;
  --border: #34344a;
  --text: #e6e6ef;
  --text-dim: #a6a6bd;
  --text-faint: #74748c;
  --accent: #4ea3ff;        /* 활성 패널 파란 테두리 */
  --accent-2: #7c5cff;
  --accent-soft: rgba(78, 163, 255, 0.14);
  --pink: #ff5fa2;          /* 원격 federation 분홍 */
  --green: #3fd17a;
  --amber: #ffcc66;
  --red: #ff6b6b;
  --radius: 14px;
  --maxw: 1120px;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", ui-monospace, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

/* ── 상단 내비 ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 20, 31, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 20px;
}
.brand { font-family: var(--mono); font-weight: 700; font-size: 18px; color: var(--text); letter-spacing: -0.5px; }
.brand .prompt { color: var(--accent); }
.nav-links { margin-left: auto; display: flex; gap: 22px; font-size: 14.5px; }
.nav-links a { color: var(--text-dim); }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* ── 히어로 ── */
.hero { padding: 84px 0 56px; text-align: center; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% 0 auto 0; height: 600px;
  background: radial-gradient(60% 60% at 50% 0%, var(--accent-soft), transparent 70%);
  pointer-events: none;
}
.eyebrow {
  display: inline-block; font-family: var(--mono); font-size: 13px;
  color: var(--accent); background: var(--accent-soft);
  border: 1px solid rgba(78,163,255,0.3); border-radius: 999px;
  padding: 5px 14px; margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 62px); line-height: 1.08; margin: 0 0 18px;
  letter-spacing: -1.5px; font-weight: 800;
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lede { font-size: clamp(17px, 2.2vw, 21px); color: var(--text-dim); max-width: 720px; margin: 0 auto 32px; }
.cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  font-family: var(--sans); font-size: 15.5px; font-weight: 600;
  padding: 13px 26px; border-radius: 11px; border: 1px solid transparent;
  cursor: pointer; transition: transform .12s ease, background .12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #06121f; }
.btn-primary:hover { background: #6cb4ff; }
.btn-ghost { background: var(--bg-card); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-elev); }

.hero-shot {
  margin: 52px auto 0; max-width: 940px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-soft); padding: 10px;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.7);
}
.hero-shot img { width: 100%; display: block; border-radius: 8px; }

/* ── 섹션 공통 ── */
section { padding: 64px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-head h2 { font-size: clamp(27px, 4vw, 38px); margin: 0 0 14px; letter-spacing: -0.8px; font-weight: 800; word-break: keep-all; }
.section-head p { color: var(--text-dim); font-size: 17px; margin: 0; word-break: keep-all; }
.kicker { font-family: var(--mono); color: var(--accent); font-size: 13px; letter-spacing: 1px; text-transform: uppercase; display: block; margin-bottom: 10px; }

/* ── 핵심 가치 ── */
.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 20px; }
.pillar {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px;
}
.pillar .ic { font-size: 26px; margin-bottom: 14px; }
.pillar h3 { margin: 0 0 8px; font-size: 19px; }
.pillar p { margin: 0; color: var(--text-dim); font-size: 15px; }

/* ── 기능 + 스크린샷 교차 ── */
.feature {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  padding: 40px 0;
}
.feature.rev .ftext { order: 2; }
.feature .ftext h3 { font-size: 25px; margin: 0 0 14px; letter-spacing: -0.5px; }
.feature .ftext p { color: var(--text-dim); font-size: 16px; margin: 0 0 16px; }
.feature ul { margin: 0; padding-left: 18px; color: var(--text-dim); font-size: 15px; }
.feature ul li { margin-bottom: 7px; }
.feature code, .inline-code {
  font-family: var(--mono); font-size: 0.9em; background: var(--bg-elev);
  border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px; color: var(--text);
}
.shot {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-soft); padding: 8px; overflow: hidden;
}
.shot img { width: 100%; display: block; border-radius: 7px; }
.shot-stack img + img { margin-top: 10px; }
.shot .cap { font-size: 12.5px; color: var(--text-faint); padding: 8px 6px 2px; font-family: var(--mono); }

/* ── 스크린샷 갤러리 그리드 ── */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gcard { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.gcard img { width: 100%; display: block; }
.gcard .meta { padding: 12px 14px 14px; }
.gcard .meta b { font-size: 15px; display: block; margin-bottom: 3px; }
.gcard .meta span { font-size: 13px; color: var(--text-dim); }

/* ── 플랫폼/통계 ── */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stat { text-align: center; background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 26px 16px; }
.stat .n { font-size: 30px; font-weight: 800; color: var(--accent); font-family: var(--mono); }
.stat .l { font-size: 14px; color: var(--text-dim); margin-top: 4px; }

/* ── 코드 블록 ── */
.code {
  background: #0d0d16; border: 1px solid var(--border); border-radius: 12px;
  font-family: var(--mono); font-size: 14px; line-height: 1.7;
  padding: 20px 22px; overflow-x: auto; color: #d4d4e4;
  white-space: pre-wrap; word-break: break-word;
}
.code .c { color: var(--text-faint); }
.code .p { color: var(--accent); }

/* ── CTA 배너 ── */
.banner {
  background: linear-gradient(120deg, var(--bg-soft), var(--bg-elev));
  border: 1px solid var(--border); border-radius: 20px;
  padding: 52px 40px; text-align: center; margin: 24px 0;
}
.banner h2 { font-size: 30px; margin: 0 0 12px; letter-spacing: -0.6px; }
.banner p { color: var(--text-dim); margin: 0 0 26px; font-size: 17px; }

/* ── 푸터 ── */
.foot { border-top: 1px solid var(--border); padding: 38px 0; color: var(--text-faint); font-size: 14px; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.foot a { color: var(--text-dim); }

/* ── 가이드 페이지 전용 ── */
.guide-layout { display: grid; grid-template-columns: 240px 1fr; gap: 48px; padding: 48px 0; align-items: start; }
.toc { position: sticky; top: 84px; font-size: 14.5px; }
.toc h4 { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-faint); margin: 0 0 12px; }
.toc a { display: block; color: var(--text-dim); padding: 5px 0; border-left: 2px solid transparent; padding-left: 12px; margin-left: -12px; }
.toc a:hover { color: var(--text); text-decoration: none; border-left-color: var(--accent); }
.doc h2 { font-size: 28px; margin: 56px 0 6px; padding-top: 12px; letter-spacing: -0.6px; border-top: 1px solid var(--border); }
.doc h2:first-child { border-top: none; margin-top: 0; }
.doc h3 { font-size: 20px; margin: 34px 0 10px; }
.doc p { color: var(--text-dim); font-size: 16px; }
.doc ul, .doc ol { color: var(--text-dim); font-size: 16px; }
.doc li { margin-bottom: 6px; }
.doc strong { color: var(--text); }
.doc figure { margin: 24px 0; }
.doc figure img { width: 100%; border: 1px solid var(--border); border-radius: 12px; background: var(--bg-soft); padding: 8px; }
.doc figcaption { font-size: 13.5px; color: var(--text-faint); margin-top: 10px; text-align: center; }
.doc table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14.5px; }
.doc th, .doc td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); }
.doc th { color: var(--text); font-weight: 600; background: var(--bg-card); }
.doc td { color: var(--text-dim); }
.doc kbd {
  font-family: var(--mono); font-size: 12.5px; background: var(--bg-elev);
  border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px;
  padding: 2px 7px; color: var(--text);
}
.callout {
  background: var(--accent-soft); border: 1px solid rgba(78,163,255,0.3);
  border-radius: 12px; padding: 16px 20px; margin: 22px 0; font-size: 15px; color: var(--text);
}
.callout.warn { background: rgba(255,204,102,0.1); border-color: rgba(255,204,102,0.35); }

/* ── 내비 GitHub 강조 ── */
.nav-links a.gh {
  color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 4px 12px; background: var(--bg-card);
}
.nav-links a.gh:hover { background: var(--bg-elev); border-color: var(--accent); }

/* ── 다운로드 카드 ── */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.dl-card {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 22px; color: var(--text);
}
.dl-card:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-2px); transition: transform .12s ease, border-color .12s ease; }
.dl-card .dl-ic { font-size: 26px; margin-bottom: 6px; }
.dl-card b { font-size: 18px; }
.dl-card span { font-size: 14px; color: var(--text-dim); }
.dl-card .dl-link { font-family: var(--mono); font-size: 13px; color: var(--accent); margin-top: 4px; }

/* ── 연락 카드 ── */
.contact-card {
  max-width: 560px; margin: 0 auto; text-align: center;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px 28px;
}
.contact-row { display: flex; align-items: center; justify-content: center; gap: 12px; }
.contact-ic { font-size: 24px; }
.contact-mail { font-family: var(--mono); font-size: clamp(20px, 3vw, 26px); font-weight: 700; }
.contact-sub { color: var(--text-dim); font-size: 15px; margin-top: 14px; }

/* ── 푸터 링크 줄 ── */
.foot-links { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

/* ── 반응형 ── */
@media (max-width: 880px) {
  .pillars, .gallery, .stats, .dl-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .feature { grid-template-columns: 1fr; gap: 24px; }
  .feature.rev .ftext { order: 0; }
  .guide-layout { grid-template-columns: 1fr; }
  .toc { position: static; display: none; }
  .nav-links { display: none; }
}

/* ───────── 스크린샷 라이트박스(클릭 확대) ───────── */
.hero-shot img, .shot img, .gcard img, figure img { cursor: zoom-in; }
.lightbox {
  position: fixed; inset: 0; z-index: 1000;
  display: none; align-items: center; justify-content: center;
  background: rgba(5, 6, 12, .92); padding: 4vmin; cursor: zoom-out;
  opacity: 0; transition: opacity .12s ease;
}
.lightbox.open { display: flex; opacity: 1; }
.lightbox img {
  max-width: 96vw; max-height: 92vh; width: auto; height: auto;
  border-radius: 10px; border: 1px solid var(--border);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .6);
}
.lightbox .lb-close {
  position: absolute; top: 18px; right: 22px;
  font-size: 30px; line-height: 1; color: #c9c9d6;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.lightbox .lb-close:hover { color: #fff; }