/* =========================================================
   K-Aesthetics Beyond Borders — shared styles
   Warm, premium, medical-aesthetic. Korean-first.
   ========================================================= */

:root {
  --bg: #faf8f4;
  --surface: #ffffff;
  --surface-alt: #f3ede4;
  --ink: #2a2622;
  --ink-soft: #6b6258;
  --line: #e7ded2;
  --accent: #a47864;       /* clay / mocha */
  --accent-deep: #7d5a4a;
  --accent-soft: #efe6dd;
  --max: 1140px;
  --radius: 14px;
  --shadow: 0 18px 50px -28px rgba(60, 44, 34, 0.45);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans KR", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Noto Serif KR", Georgia, serif;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

p { margin: 0 0 1em; }

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

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

.wrap { width: min(var(--max), 92%); margin-inline: auto; }

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-deep);
  font-weight: 600;
  margin-bottom: 0.9rem;
}

.lead { font-size: 1.15rem; color: var(--ink-soft); }

/* ---------- language toggle visibility ---------- */
[data-en] { display: none; }
body.lang-en [data-ko] { display: none; }
body.lang-en [data-en] { display: revert; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 248, 244, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}
.brand {
  font-family: "Noto Serif KR", serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.brand small { display: block; font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent-deep); font-family: "Noto Sans KR", sans-serif; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--ink); font-size: 0.95rem; font-weight: 500; }
.nav-links a.active { color: var(--accent-deep); }
.nav-right { display: flex; align-items: center; gap: 1rem; }

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  font-size: 0.78rem;
  background: var(--surface);
}
.lang-toggle button {
  border: 0; background: transparent; cursor: pointer;
  padding: 0.3rem 0.7rem; color: var(--ink-soft); font-weight: 600;
  font-family: inherit;
}
.lang-toggle button.on { background: var(--accent); color: #fff; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.72rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--accent);
  cursor: pointer;
  transition: background .2s, transform .2s;
}
.btn:hover { background: var(--accent-deep); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--accent-deep); }
.btn-ghost:hover { background: var(--accent-soft); color: var(--accent-deep); }

.menu-toggle { display: none; background: none; border: 0; cursor: pointer; font-size: 1.5rem; color: var(--ink); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
  padding: clamp(3rem, 7vw, 6rem) 0;
}
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
.hero .lead { max-width: 32ch; }
.hero-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 1.6rem; }
.hero-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 5;
  background: linear-gradient(160deg, #d8c4b4, #a47864 70%);
}
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-tag {
  position: absolute; left: 1rem; bottom: 1rem;
  background: rgba(255,255,255,0.92);
  border-radius: 10px; padding: 0.6rem 0.9rem;
  font-size: 0.82rem; color: var(--ink); max-width: 75%;
  box-shadow: 0 8px 24px -12px rgba(0,0,0,.4);
}

/* ---------- sections ---------- */
section { padding: clamp(2.6rem, 6vw, 4.8rem) 0; }
.section-head { max-width: 60ch; margin-bottom: 2.4rem; }
.section-head h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }

.alt { background: var(--surface-alt); }

/* ---------- service / feature grid ---------- */
.grid { display: grid; gap: 1.2rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem;
  transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.2rem; height: 2.2rem; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent-deep);
  font-family: "Noto Serif KR", serif; font-weight: 600; margin-bottom: 1rem;
}
.card h3 { font-size: 1.18rem; }
.card p { color: var(--ink-soft); font-size: 0.97rem; margin: 0; }

/* ---------- split content ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.split .media {
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  aspect-ratio: 5/4; background: linear-gradient(160deg, #e6d6c6, #b08c75);
}

/* ---------- stat band ---------- */
.stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; text-align: center; }
.stat .big { font-family: "Noto Serif KR", serif; font-size: 2.4rem; color: var(--accent-deep); }
.stat .lbl { color: var(--ink-soft); font-size: 0.92rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(150deg, var(--accent-deep), var(--accent));
  color: #fff; border-radius: var(--radius); padding: clamp(2rem,5vw,3.4rem);
  text-align: center;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,.9); }
.cta-band .btn { background: #fff; color: var(--accent-deep); border-color: #fff; }
.cta-band .btn:hover { background: var(--surface-alt); }

/* ---------- forms ---------- */
.form { display: grid; gap: 1rem; max-width: 560px; }
.form label { font-weight: 600; font-size: 0.9rem; }
.form input, .form textarea, .form select {
  width: 100%; padding: 0.8rem 0.95rem; border: 1px solid var(--line);
  border-radius: 10px; font: inherit; background: var(--surface); color: var(--ink);
}
.form textarea { min-height: 130px; resize: vertical; }
.inline { display: flex; gap: 0.6rem; }
.inline input { flex: 1; }
.muted { color: var(--ink-soft); font-size: 0.9rem; }

/* ---------- footer ---------- */
.site-footer { background: #efe7dd; border-top: 1px solid var(--line); padding: 3rem 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; }
.footer-grid h4 { font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-deep); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 0.5rem; font-size: 0.95rem; }
.footer-bottom { margin-top: 2.5rem; padding-top: 1.4rem; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; font-size: 0.82rem; color: var(--ink-soft); }

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; }
  .hero-media { order: -1; aspect-ratio: 16/10; }
  .split { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .menu-toggle { display: block; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: 0.5rem 4%; max-height: 0; overflow: hidden; transition: max-height .3s;
  }
  .nav-links.open { max-height: 360px; }
  .nav-links li { width: 100%; padding: 0.6rem 0; border-bottom: 1px solid var(--line); }
}