/* =========================================================================
   Trinity Sub-page Premium Design System
   Shared by /about, /doctors, /equipment, /location, /uterus/*, ...
   Pairs with Tailwind Play CDN + Pretendard + Noto Serif KR + lucide.
   ========================================================================= */

:root {
  --kale-deep: #3e522d;
  --kale-dark: #2d3b1a;
  --kale-muted: #5b6d4a;
  --beige-site: #f4ebe2;
  --beige-bg: #fdfcfb;
  --beige-card: #f5f2eb;
  --line: #e9e4db;
  --taupe: #957f6a;
  --text-dark: #1a1f16;
  --text-soft: #5c5c5c;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Pretendard Variable", Pretendard, -apple-system, sans-serif;
  background-color: #ffffff;
  color: #3a4035;
  overflow-x: hidden;
  margin: 0;
}

.serif {
  font-family: "Noto Serif KR", serif;
}

.break-keep {
  word-break: keep-all;
}

/* --- brand color helpers --- */
.t-primary {
  color: var(--kale-deep);
}
.bg-t-primary {
  background-color: var(--kale-deep);
}
.bg-t-primary-dark {
  background-color: var(--kale-dark);
}
.bg-t-soft {
  background-color: #f1f4ed;
}
.bg-t-beige {
  background-color: var(--beige-bg);
}
.border-t-primary {
  border-color: var(--kale-deep);
}

/* =========================================================================
   Site Header
   ========================================================================= */
#site-header {
  transition: background-color 0.3s ease, border-color 0.3s ease,
    box-shadow 0.3s ease;
}
#site-header.is-scrolled {
  background-color: rgba(253, 252, 251, 0.96);
  border-color: rgba(233, 228, 219, 0.8);
  box-shadow: 0 4px 24px rgba(26, 31, 22, 0.06);
  backdrop-filter: blur(12px);
}
#site-header.is-scrolled .site-nav-link,
#site-header.is-scrolled .site-header-logo-text {
  color: #1a1f16;
}
#site-header.is-scrolled .site-menu-btn {
  color: #1a1f16;
  border-color: rgba(233, 228, 219, 0.9);
}
#site-header:not(.is-scrolled) .site-header-logo img {
  filter: brightness(0) invert(1);
  opacity: 0.95;
}
.site-nav-item:hover .site-nav-dropdown,
.site-nav-item:focus-within .site-nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.site-nav-dropdown {
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}
#mobile-nav-panel {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
#mobile-nav-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
#mobile-nav-backdrop {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s;
}
#mobile-nav-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}
#site-header.menu-open,
#site-header.menu-open.is-scrolled {
  background-color: rgba(253, 252, 251, 0.98);
  border-color: rgba(233, 228, 219, 0.8);
  backdrop-filter: blur(12px);
}
#site-header.menu-open .site-nav-link,
#site-header.menu-open .site-menu-btn {
  color: #1a1f16;
  border-color: rgba(233, 228, 219, 0.9);
}
#site-header.menu-open .site-header-logo img {
  filter: none;
  opacity: 1;
}
.mobile-nav-group summary {
  list-style: none;
}
.mobile-nav-group summary::-webkit-details-marker {
  display: none;
}
.mobile-nav-group[open] .mobile-nav-chevron {
  transform: rotate(180deg);
}

/* =========================================================================
   Reusable sub-page components
   ========================================================================= */

/* Hero */
.sub-hero {
  position: relative;
  min-height: 62vh;
  display: flex;
  align-items: center;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(26, 31, 22, 0.55) 0%, rgba(26, 31, 22, 0.35) 45%, rgba(26, 31, 22, 0.7) 100%),
    var(--kale-deep);
  background-size: cover;
  background-position: center;
}
.sub-hero__eyebrow {
  letter-spacing: 0.28em;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  opacity: 0.85;
}

/* Section shell */
.sec {
  padding: 88px 0;
}
@media (max-width: 767px) {
  .sec {
    padding: 60px 0;
  }
}
.sec-eyebrow {
  letter-spacing: 0.22em;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--taupe);
}
.sec-title {
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.3;
  word-break: keep-all;
}
.sec-lead {
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.85;
  word-break: keep-all;
}

/* Cards */
.t-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s;
}
.t-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(26, 31, 22, 0.08);
  border-color: #d9d2c4;
}
.t-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f1f4ed;
  color: var(--kale-deep);
  margin-bottom: 18px;
}

/* Stat / number pill */
.t-num {
  font-family: "Noto Serif KR", serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--kale-deep);
  background: #f1f4ed;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Image placeholder box */
.img-box {
  background-color: var(--beige-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  border-radius: 16px;
  border: 1px solid var(--line);
}
.img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* CTA band */
.cta-band {
  background:
    radial-gradient(1200px 400px at 50% -30%, rgba(255, 255, 255, 0.08), transparent),
    var(--kale-deep);
  color: #fff;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  padding: 14px 28px;
  transition: all 0.2s ease;
}
.cta-btn--light {
  background: #fff;
  color: var(--kale-deep);
}
.cta-btn--light:hover {
  background: #f1f4ed;
  transform: translateY(-2px);
}
.cta-btn--outline {
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  color: #fff;
}
.cta-btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}