/* ═══════════════════════════════════════════════════════════
   서울에스마취통증의학과의원 방배이수점 — Common CSS
   디자인 토큰 · 리셋 · 타이포 · 헤더 · 푸터 · 플로팅 · 모션
   톤: 클린·신뢰 (메디컬 블루) / 안티슬롭 준수
   ═══════════════════════════════════════════════════════════ */

:root{
  /* Base (라이트) */
  --bg:#FFFFFF; --bg-soft:#F6F8FB; --bg-tint:#EAF1FB; --line:#E4E9F0;
  /* Accent — 메디컬 블루 (액센트 1개) */
  --blue:#1E5FBF; --blue-strong:#16498F; --blue-soft:#5C8FD6; --blue-deep:#0F2C5C;
  /* Text (순흑 금지) */
  --ink:#111418; --ink-2:#3A424E; --ink-3:#6B7480; --on-blue:#FFFFFF;
  --ok:#2E7D5B;
  /* Typography */
  --font-kr:'Pretendard Variable','Pretendard',-apple-system,BlinkMacSystemFont,sans-serif;
  --font-en:'Cormorant Garamond','Georgia',serif;
  --fs-hero:clamp(32px,5vw,60px);
  --fs-h2:clamp(26px,3.4vw,40px);
  --fs-h3:clamp(20px,2.2vw,26px);
  --fs-body:17px; --lh-body:1.75;
  /* Spacing (8pt) */
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:96px; --sp-8:128px;
  --sec-y:clamp(64px,9vw,128px);
  /* Radius / Shadow */
  --r-sm:8px; --r-md:14px; --r-lg:22px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(17,20,24,.05);
  --sh-2:0 8px 28px rgba(30,95,191,.08);
  --sh-3:0 18px 50px rgba(15,44,92,.14);
  /* Easing / Time */
  --ease-out:cubic-bezier(.16,1,.3,1); --ease-io:cubic-bezier(.65,0,.35,1);
  --t-fast:.25s; --t-base:.5s; --t-slow:.8s;
  /* Layout */
  --max-w:1200px; --max-w-wide:1440px; --header-h:76px;
}

/* ─── RESET ─── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-kr); font-size:var(--fs-body); line-height:var(--lh-body);
  color:var(--ink); background:var(--bg);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,video,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.02em;font-weight:700}
strong{font-weight:700}
:focus-visible{outline:3px solid var(--blue-soft);outline-offset:2px;border-radius:4px}

/* ─── LAYOUT HELPERS ─── */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.container-wide{max-width:var(--max-w-wide);margin:0 auto;padding:0 24px}
.section{padding:var(--sec-y) 0}
.section--soft{background:var(--bg-soft)}
.section--tint{background:var(--bg-tint)}
.eyebrow{
  font-family:var(--font-en); font-size:15px; letter-spacing:.15em; text-transform:uppercase;
  color:var(--blue); font-weight:600; margin-bottom:14px; display:inline-block;
}
.section-title{font-size:var(--fs-h2);margin-bottom:18px}
.section-title .accent{color:var(--blue)}
.section-lead{font-size:18px;color:var(--ink-2);max-width:680px;line-height:1.7}
.center{text-align:center}
.center .section-lead{margin-left:auto;margin-right:auto}

/* ─── BUTTONS ─── */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);font-size:16px;font-weight:600;
  transition:transform var(--t-fast) var(--ease-out),background var(--t-fast),box-shadow var(--t-fast);
}
.btn-primary{background:var(--blue);color:var(--on-blue);box-shadow:var(--sh-2)}
.btn-primary:hover{background:var(--blue-strong);transform:translateY(-2px);box-shadow:var(--sh-3)}
.btn-ghost{background:transparent;color:var(--blue);border:1.5px solid var(--blue)}
.btn-ghost:hover{background:var(--blue);color:var(--on-blue)}
.btn-white{background:#fff;color:var(--blue-strong)}
.btn-white:hover{transform:translateY(-2px);box-shadow:var(--sh-3)}

/* ═══════════════ HEADER ═══════════════ */
#header{
  position:fixed;top:0;left:0;width:100%;height:var(--header-h);z-index:1000;
  transition:background var(--t-base),box-shadow var(--t-base);
}
#header .header-inner{
  max-width:100%;margin:0;height:100%;padding:0 clamp(24px,3vw,56px);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
#header .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.02em;transition:color var(--t-base)}
#header .logo .logo-mark{width:30px;height:30px;flex:none}
#header .logo .logo-sub{font-size:12px;font-weight:600;color:var(--blue);letter-spacing:0}
/* transparent (상단) */
#header.transparent{background:transparent}
#header.transparent .logo,#header.transparent .gnb>li>a{color:#fff}
#header.transparent .header-tel{color:#fff;border-color:rgba(255,255,255,.5)}
#header.transparent .mobile-menu-btn span{background:#fff}
/* solid (스크롤) */
#header.solid{background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(12px);box-shadow:var(--sh-1)}
#header.solid .logo{color:var(--ink)}
#header.solid .gnb>li>a{color:var(--ink-2)}

.header-nav{height:100%}
.gnb{display:flex;height:100%;gap:4px}
.gnb>li{height:100%}
.gnb>li>a{
  display:flex;align-items:center;height:100%;padding:0 20px;font-size:17px;font-weight:600;
  position:relative;transition:color var(--t-fast);
}
.gnb>li>a::after{
  content:'';position:absolute;left:20px;right:20px;bottom:22px;height:2px;background:var(--blue);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t-fast) var(--ease-out);
}
.gnb>li>a:hover{color:var(--blue)}
.gnb>li>a:hover::after{transform:scaleX(1)}

.header-right{display:flex;align-items:center;gap:14px}
.header-sns{display:inline-flex;align-items:center;gap:10px}
.header-sns a{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--r-pill);color:var(--ink-3);transition:color var(--t-fast),background var(--t-fast)}
.header-sns a:hover{color:var(--blue);background:var(--bg-tint)}
#header.transparent .header-sns a{color:rgba(255,255,255,.85)}
#header.transparent .header-sns a:hover{color:#fff;background:rgba(255,255,255,.15)}
.header-tel{
  display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border:1.5px solid var(--blue);
  border-radius:var(--r-pill);font-weight:700;font-size:15px;color:var(--blue);transition:all var(--t-fast);white-space:nowrap;
}
#header.solid .header-tel{background:var(--blue);color:#fff;border-color:var(--blue)}
.header-tel:hover{transform:translateY(-1px);box-shadow:var(--sh-2)}

/* ─── MEGA MENU ─── */
#megaMenuBar{
  position:absolute;top:var(--header-h);left:0;width:100%;background:rgba(255,255,255,.98);
  backdrop-filter:blur(12px);box-shadow:var(--sh-2);border-top:1px solid var(--line);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity var(--t-fast),transform var(--t-fast),visibility var(--t-fast);
}
#megaMenuBar.active{opacity:1;visibility:visible;transform:translateY(0)}
.mega-inner{max-width:var(--max-w-wide);margin:0 auto;padding:32px 28px;display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.mega-col h4{font-size:15px;color:var(--blue);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.mega-col ul + h4{margin-top:22px}
.mega-col ul li{margin:9px 0}
.mega-col ul li a{font-size:15px;color:var(--ink-2);transition:color var(--t-fast),padding-left var(--t-fast)}
.mega-col ul li a:hover{color:var(--blue);padding-left:5px}

/* ─── MOBILE MENU BUTTON ─── */
.mobile-menu-btn{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;z-index:1100}
.mobile-menu-btn span{display:block;width:24px;height:2px;background:var(--ink);margin:0 auto;transition:transform var(--t-fast),opacity var(--t-fast)}
.mobile-menu-btn.active span{background:var(--ink)!important}
.mobile-menu-btn.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mobile-menu-btn.active span:nth-child(2){opacity:0}
.mobile-menu-btn.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ─── MOBILE DRAWER ─── */
.mobile-drawer-overlay{position:fixed;inset:0;background:rgba(15,44,92,.4);opacity:0;visibility:hidden;transition:opacity var(--t-base),visibility var(--t-base);z-index:1050}
.mobile-drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:-100%;width:min(86vw,360px);height:100%;background:#fff;z-index:1060;
  box-shadow:var(--sh-3);transition:right var(--t-base) var(--ease-out);overflow-y:auto;padding:88px 28px 40px;
}
.mobile-drawer.open{right:0}
.mobile-drawer .md-group{border-bottom:1px solid var(--line)}
.mobile-drawer .md-group>a{display:block;padding:18px 4px;font-size:18px;font-weight:700;color:var(--ink)}
.mobile-drawer .md-sub{padding:0 4px 16px}
.mobile-drawer .md-sub a{display:block;padding:8px 0;font-size:15px;color:var(--ink-3)}
.mobile-drawer .md-tel{margin-top:28px;display:flex;justify-content:center}

/* ═══════════════ FLOATING QUICK MENU ═══════════════ */
.quick-menu{
  position:fixed;right:20px;bottom:24px;z-index:900;display:flex;flex-direction:column;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity var(--t-base),transform var(--t-base),visibility var(--t-base);
}
.quick-menu.visible{opacity:1;visibility:visible;transform:translateY(0)}
.quick-menu .qm-item{
  width:60px;height:60px;border-radius:var(--r-md);background:#fff;box-shadow:var(--sh-2);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;font-weight:600;color:var(--ink-2);transition:transform var(--t-fast),background var(--t-fast),color var(--t-fast);
}
.quick-menu .qm-item svg{width:22px;height:22px}
.quick-menu .qm-item:hover{transform:translateY(-3px);background:var(--blue);color:#fff}
.quick-menu .qm-item:hover svg [stroke]{stroke:#fff}
.quick-menu .qm-tel{background:var(--blue);color:#fff}
.quick-menu .qm-tel svg [stroke]{stroke:#fff}

/* ═══════════════ FOOTER ═══════════════ */
.footer{background:var(--blue-deep);color:rgba(255,255,255,.78);padding:64px 0 40px;font-size:14.5px;line-height:1.8}
.footer .footer-top{display:grid;grid-template-columns:1.4fr 1fr 1.1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer h5{color:#fff;font-size:16px;margin-bottom:16px;font-weight:700}
.footer .f-brand .f-logo{font-size:21px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:-.02em}
.footer .f-info p{margin:3px 0}
.footer .f-info b{color:#fff;font-weight:600}
.footer .f-social{display:flex;gap:10px;margin-top:16px}
.footer .f-social a{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--r-pill);background:rgba(255,255,255,.1);color:rgba(255,255,255,.85);transition:background var(--t-fast),color var(--t-fast)}
.footer .f-social a svg{width:18px;height:18px}
.footer .f-social a:hover{background:var(--blue-soft);color:#fff}
.footer .f-links a{display:block;margin:7px 0;color:rgba(255,255,255,.78);transition:color var(--t-fast)}
.footer .f-links a:hover{color:#fff}
.footer .f-branch{font-size:13.5px}
.footer .f-branch .branch-item{margin-bottom:14px;padding-left:14px;border-left:2px solid var(--blue-soft)}
.footer .f-branch .branch-item b{color:#fff;display:block;font-weight:600}
.footer .footer-bottom{padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:rgba(255,255,255,.55)}
.footer .footer-bottom .legal{color:rgba(255,255,255,.5)}

/* ═══════════════ MOTION / REVEAL ═══════════════ */
/* fail-safe: JS 미실행(no-js) 시 등장모션 콘텐츠 강제 노출 */
.no-js .reveal,.no-js [data-reveal],.no-js [data-motion],.no-js [data-stagger]>*,.no-js [data-motion="char-reveal"] .m-char{opacity:1!important;transform:none!important;filter:none!important}
.reveal{opacity:0;transform:translateY(40px);transition:opacity var(--t-slow) var(--ease-out),transform var(--t-slow) var(--ease-out)}
.reveal.visible{opacity:1;transform:none}
/* 모션 강화: 제목 강조어에 밑줄이 스르륵 그려지는 효과 (인뷰, 레퍼런스 톤) */
.accent{position:relative;display:inline-block}
.accent::after{content:'';position:absolute;left:0;bottom:-3px;width:100%;height:2px;background:var(--blue);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .9s var(--ease-out) .3s}
.accent.visible::after{transform:scaleX(1)}
[data-motion="fade-up"]{opacity:0;transform:translateY(40px);transition:opacity var(--t-slow) var(--ease-out),transform var(--t-slow) var(--ease-out)}
[data-motion="fade-up"].visible{opacity:1;transform:none}
[data-motion="fade-in"]{opacity:0;transition:opacity var(--t-slow) var(--ease-out)}
[data-motion="fade-in"].visible{opacity:1}
[data-motion="scale-in"]{opacity:0;transform:scale(.94);transition:opacity var(--t-slow) var(--ease-out),transform var(--t-slow) var(--ease-out)}
[data-motion="scale-in"].visible{opacity:1;transform:none}
/* char-reveal */
[data-motion="char-reveal"] .m-char{display:inline-block;opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease-out),transform .5s var(--ease-out)}
[data-motion="char-reveal"].visible .m-char{opacity:1;transform:none}
/* stagger children */
[data-stagger]>*{opacity:0;transform:translateY(30px);transition:opacity var(--t-base) var(--ease-out),transform var(--t-base) var(--ease-out)}
[data-stagger].visible>*{opacity:1;transform:none}
[data-stagger].visible>*:nth-child(1){transition-delay:.05s}
[data-stagger].visible>*:nth-child(2){transition-delay:.13s}
[data-stagger].visible>*:nth-child(3){transition-delay:.21s}
[data-stagger].visible>*:nth-child(4){transition-delay:.29s}
[data-stagger].visible>*:nth-child(5){transition-delay:.37s}
[data-stagger].visible>*:nth-child(6){transition-delay:.45s}

/* ═══════════════ RESPONSIVE ═══════════════ */
@media (max-width:1024px){
  .header-nav,.header-tel,.header-right{display:none}
  .mobile-menu-btn{display:flex}
  .footer .footer-top{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:680px){
  :root{--header-h:64px}
  .footer .footer-top{grid-template-columns:1fr}
  .quick-menu{right:14px;bottom:16px}
  .quick-menu .qm-item{width:54px;height:54px}
}

/* ═══════════════ A11Y: 모션 최소화 선호 ═══════════════ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal,[data-motion],[data-stagger]>*{opacity:1!important;transform:none!important}
}