/* ==========================================================================
   SELA 조경설계사무소 — Global Stylesheet
   Minimal / Refined Landscape Architecture Studio Theme
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-soft: #f7f7f5;
  --color-text: #16180f  ;
  --color-text: #17190f;
  --color-text: #151710;
  --color-ink: #14150f;
  --color-muted: #74766c;
  --color-line: #e2e2dc;
  --color-line-strong: #c9c9c0;
  --color-accent: #33432b;
  --color-accent-soft: #eef0e8;
  --color-white: #ffffff;

  --font-serif: 'Newsreader', 'Noto Serif KR', serif;
  --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;

  --max-width: 1320px;
  --pad: 6vw;

  --dur: 0.5s;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
  font-weight: 400;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-muted);
  font-weight: 600;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--color-accent);
  display: inline-block;
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--color-ink);
}

.section-sub {
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 640px;
}

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px var(--pad);
  transition: background var(--dur) var(--ease), padding var(--dur) var(--ease), border-color var(--dur) var(--ease);
  border-bottom: 1px solid transparent;
  mix-blend-mode: normal;
}

#site-header.is-solid {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
  padding: 16px var(--pad);
}

.header-logo img {
  height: 40px;
  width: auto;
  transition: filter var(--dur) var(--ease);
}

.theme-dark #site-header:not(.is-solid) .header-logo img {
  filter: invert(1) brightness(2);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.main-nav a {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 6px 0;
  position: relative;
  color: var(--color-ink);
  transition: color var(--dur) var(--ease);
}

.theme-dark #site-header:not(.is-solid) .main-nav a,
.theme-dark #site-header:not(.is-solid) .header-logo,
.theme-dark #site-header:not(.is-solid) .nav-toggle span {
  color: #fff;
}
.theme-dark #site-header:not(.is-solid) .nav-toggle span { background: #fff; }

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 0%; height: 1px;
  background: currentColor;
  transition: width var(--dur) var(--ease);
}
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }
.main-nav a.active { color: var(--color-accent); }

.nav-cta {
  border: 1px solid var(--color-ink);
  padding: 9px 22px !important;
  border-radius: 999px;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--color-ink); color: #fff; }
.theme-dark #site-header:not(.is-solid) .nav-cta { border-color: #fff; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  width: 30px;
  z-index: 1100;
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--color-ink);
  transition: all var(--dur) var(--ease);
}

/* ==========================================================================
   Mobile Nav
   ========================================================================== */

@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    gap: 34px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.5s var(--ease), opacity 0.4s var(--ease), visibility 0.5s;
  }
  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav a { font-size: 22px; color: var(--color-ink) !important; }
  .nav-toggle { display: flex; }
  .nav-toggle.is-active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
  .nav-toggle.is-active span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
  .nav-toggle.is-active span { background: var(--color-ink) !important; }
}

/* ==========================================================================
   Footer
   ========================================================================== */

#site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,0.72);
  padding: 90px var(--pad) 30px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  flex-wrap: wrap;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.footer-brand img { height: 42px; margin-bottom: 22px; filter: invert(1) brightness(2); }
.footer-brand p {
  max-width: 320px;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255,255,255,0.55);
}
.footer-cols { display: flex; gap: 70px; flex-wrap: wrap; }
.footer-col h4 {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 20px;
  font-weight: 600;
}
.footer-col a, .footer-col li {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 12px;
  line-height: 1.6;
}
.footer-col a:hover { color: #fff; }
.footer-instagram {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.footer-instagram svg { flex-shrink: 0; }
.footer-instagram:hover { color: #fff; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 26px;
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-domain-badge {
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 11px;
  letter-spacing: 0.08em;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 16px 30px;
  border-radius: 999px;
  border: 1px solid var(--color-ink);
  transition: all var(--dur) var(--ease);
}
.btn-dark { background: var(--color-ink); color: #fff; }
.btn-dark:hover { background: var(--color-accent); border-color: var(--color-accent); }
.btn-outline { background: transparent; color: var(--color-ink); }
.btn-outline:hover { background: var(--color-ink); color: #fff; }
.btn svg { transition: transform var(--dur) var(--ease); }
.btn:hover svg { transform: translateX(4px); }

/* ==========================================================================
   Page Header (sub pages hero)
   ========================================================================== */

.page-hero {
  position: relative;
  min-height: 46vh;
  display: flex;
  align-items: flex-end;
  padding: 200px var(--pad) 70px;
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15,20,10,0.35) 0%, rgba(15,20,10,0.72) 100%);
  z-index: 1;
}
.page-hero-inner { position: relative; z-index: 2; width: 100%; }
.page-hero .eyebrow { color: rgba(255,255,255,0.75); }
.page-hero .eyebrow::before { background: #fff; }
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  font-weight: 500;
  margin-top: 14px;
  letter-spacing: -0.01em;
}
.page-hero p.lead {
  margin-top: 18px;
  max-width: 560px;
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  line-height: 1.8;
}

/* ==========================================================================
   Utility: reveal-on-scroll
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

/* ==========================================================================
   Breadcrumb strip under fixed header on inner pages without hero
   ========================================================================== */
.spacer-header { height: 96px; }

@media (max-width: 640px) {
  :root { --pad: 6.5vw; }
  #site-header { padding: 18px var(--pad); }
  .footer-top { flex-direction: column; gap: 40px; }
}