/* =====================================================
   오늘과외 - 과목 상세페이지 공통 스타일
   subject-template.css

   메인 홈페이지(onuel-gwaoe-homepage.html)의 디자인 토큰과
   컴포넌트 스타일(teacher-marquee 등)을 그대로 재사용합니다.
   영어회화 외 다른 과목 페이지도 이 파일을 공유합니다.
===================================================== */

/* ---------- Tokens (메인 홈페이지와 동일) ---------- */
:root{
  --ivory:#FAFBFC;
  --beige:#F3F4F6;
  --soft-gray:#E5E7EB;
  --surface:#FFFFFF;
  --ink:#1F2937;
  --ink-soft:#6B7280;
  --ink-faint:#9CA3AF;
  --olive:#2563EB;
  --olive-deep:#3B82F6;
  --olive-pale:#EEF5FF;
  --gold:#B4895A;
  --blue:#3B82F6;
  --blue-deep:#2563EB;
  --blue-pale:#EEF5FF;
  --line:#E5E7EB;
  --line-strong:#D1D5DB;
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --shadow-soft:0 20px 48px -26px rgba(15,23,42,.16);
  --shadow-card:0 8px 22px -14px rgba(15,23,42,.10);
  --container:1240px;
  --pad:clamp(20px, 6vw, 120px);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ivory);
  color:var(--ink);
  font-family:'Pretendard Variable','Pretendard',-apple-system,BlinkMacSystemFont,sans-serif;
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-0.025em;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}

.container{max-width:var(--container);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;letter-spacing:.08em;
  color:var(--olive-deep);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--olive);display:inline-block;}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in-view{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

.section-head{max-width:640px;margin:0 auto clamp(32px,4vw,48px);text-align:center;}
.section-head h2{font-size:clamp(27px,2.8vw,38px);margin-top:14px;line-height:1.4;font-weight:700;}
.section-head p{margin-top:14px;color:var(--ink-soft);font-size:17.5px;line-height:1.7;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;border-radius:999px;font-weight:600;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--olive-deep);color:#fff;padding:14px 28px;font-size:17px;box-shadow:0 14px 28px -14px rgba(58,71,48,.55);}
.btn-primary:hover{background:var(--olive);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--ink);padding:13px 24px;font-size:17px;border:1px solid var(--line-strong);}
.btn-ghost:hover{border-color:var(--olive);color:var(--olive-deep);}

/* ---------- Top back-link bar ---------- */
.subject-topbar{padding:18px 0;border-bottom:1px solid var(--line);background:var(--surface);}
.subject-topbar a{font-size:15px;color:var(--ink-soft);font-weight:600;}
.subject-topbar a:hover{color:var(--olive-deep);}

/* =====================================================
   Header / Nav — 메인 홈페이지(onuel-gwaoe-homepage.html)
   Header 스타일을 그대로 재사용합니다. (새로 만들지 않음)
===================================================== */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(250,247,241,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  display:flex;align-items:center;justify-content:space-between;
  height:78px;
}
.logo{
  font-weight:800;font-size:23.5px;color:var(--olive-deep);
  letter-spacing:-.03em;
}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-item{position:relative;}
.nav-link{
  display:flex;align-items:center;gap:5px;
  padding:10px 16px;border-radius:999px;
  font-size:17px;font-weight:500;color:var(--ink);
  transition:background .2s ease, color .2s ease;
}
.nav-item:hover .nav-link,.nav-link:focus-visible{background:var(--olive-pale);color:var(--olive-deep);}
.nav-link .chev{width:9px;height:9px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);margin-top:-3px;transition:transform .2s ease;}
.nav-item:hover .chev{transform:rotate(225deg);margin-top:3px;}
.dropdown{
  position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(6px);
  min-width:300px;background:#FFFFFF;border:1px solid #EEF0F3;
  border-radius:20px;box-shadow:0 16px 40px -22px rgba(20,20,20,.16);
  padding:8px;opacity:0;visibility:hidden;
  transition:opacity .22s ease, transform .22s ease, visibility .22s;
}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);}
.dropdown-item{
  display:flex;align-items:center;gap:14px;padding:14px;border-radius:14px;
  transition:background .2s ease;
}
.dropdown-item:hover{background:#F7F9FC;}
.dropdown-item.active{background:#EEF4FF;}
.dropdown-item-icon{
  width:40px;height:40px;border-radius:50%;background:#F3F7FF;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  font-size:12.5px;font-weight:800;letter-spacing:.02em;color:#2563EB;
}
.dropdown-item-text{flex:1;min-width:0;}
.dropdown-item-title{display:block;font-size:16px;font-weight:800;color:#1F2937;}
.dropdown-item-sub{display:block;margin-top:2px;font-size:12.5px;color:#6B7280;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.dropdown-item-cta{
  flex-shrink:0;font-size:16px;color:#C7D2E0;transition:transform .2s ease, color .2s ease;
}
.dropdown-item:hover .dropdown-item-cta{transform:translateX(3px);color:#2563EB;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.btn-sm{padding:9px 18px;font-size:15.5px;}
.hamburger{display:none;width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);background:transparent;align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.hamburger span{width:18px;height:1.5px;background:var(--ink);display:block;transition:transform .25s ease, opacity .25s ease;}
.mobile-panel{
  position:fixed;inset:0;z-index:300;background:var(--ivory);
  transform:translateX(100%);transition:transform .35s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.mobile-panel.open{transform:translateX(0);}
.mobile-panel-head{display:flex;justify-content:space-between;align-items:center;height:78px;padding:0 24px;border-bottom:1px solid var(--line);}
.mobile-close{width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);background:transparent;position:relative;}
.mobile-close::before,.mobile-close::after{content:"";position:absolute;left:50%;top:50%;width:16px;height:1.5px;background:var(--ink);}
.mobile-close::before{transform:translate(-50%,-50%) rotate(45deg);}
.mobile-close::after{transform:translate(-50%,-50%) rotate(-45deg);}
.mobile-nav{padding:18px 24px 60px;}
.mobile-group{border-bottom:1px solid var(--line);}
.mobile-group-head{
  display:flex;align-items:center;justify-content:space-between;
  min-height:62px;padding:0 4px;font-size:19px;font-weight:600;
  text-decoration:none;color:var(--ink);
}
.mobile-group-head .mgh-left{display:flex;align-items:center;gap:12px;}
.mobile-group-head .mgh-icon{font-size:21px;line-height:1;flex-shrink:0;}
.mobile-group-head .chev{width:9px;height:9px;border-right:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);transform:rotate(45deg);transition:transform .2s ease;flex-shrink:0;}
.mobile-group-head .chev.static{transform:rotate(-45deg);}
.mobile-group.open .chev{transform:rotate(-135deg);}
.mobile-sub{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.mobile-group.open .mobile-sub{max-height:420px;}
.mobile-sub a{display:block;padding:12px 4px 12px 14px;color:var(--ink-soft);font-size:17.5px;}
.mobile-cta{margin-top:28px;display:flex;flex-direction:column;gap:12px;}

/* -- 현재 페이지 메뉴 Active 표시 (과목 페이지 공통, subject 무관하게 재사용) --
   사용법: 현재 과목에 해당하는 .nav-link / .mobile-group-head 에
   class="is-active" 를 추가하면 됩니다. */
.nav-link.is-active{
  color:var(--olive-deep);font-weight:700;
  box-shadow:inset 0 -2px 0 var(--olive-deep);
}
.mobile-group-head.is-active{color:var(--olive-deep);font-weight:700;}

/* =====================================================
   ① 선생님 마퀴 (메인 홈페이지 teacher-marquee 100% 동일 재사용)
===================================================== */
.teachers{padding:clamp(70px,8vw,110px) 0 clamp(50px,6vw,80px);}
.teacher-marquee{
  margin-top:clamp(40px,5vw,60px);width:100%;overflow:hidden;
  cursor:grab;-webkit-user-select:none;user-select:none;touch-action:pan-y;
}
.teacher-marquee.dragging{cursor:grabbing;}
.teacher-track{
  display:flex;gap:28px;width:max-content;
  padding:6px var(--pad) 24px;will-change:transform;
}
.teacher-card{
  flex:0 0 auto;height:clamp(220px,26vw,300px);
  border-radius:var(--r-xl);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  background:var(--surface);cursor:pointer;
  transition:transform .25s ease, box-shadow .25s ease;
}
.teacher-card:hover{transform:translateY(-4px);box-shadow:0 22px 46px -20px rgba(15,23,42,0.18);}
.teacher-card img{display:block;height:100%;width:auto;pointer-events:none;-webkit-user-drag:none;}

/* =====================================================
   선생님 프로필 모달
===================================================== */
.teacher-modal-overlay{
  position:fixed;inset:0;background:rgba(15,23,42,0.33);
  display:flex;align-items:center;justify-content:center;padding:24px;
  z-index:500;opacity:0;visibility:hidden;transition:opacity .25s ease, visibility .25s ease;
}
.teacher-modal-overlay.open{opacity:1;visibility:visible;}
.teacher-modal{
  position:relative;max-width:900px;width:100%;max-height:90vh;overflow-y:auto;
  background:var(--surface);border-radius:var(--r-xl);box-shadow:var(--shadow-soft);
  padding:clamp(20px,3vw,32px);text-align:center;
  transform:translateY(24px) scale(.97);transition:transform .3s ease;
}
.teacher-modal-overlay.open .teacher-modal{transform:translateY(0) scale(1);}
.teacher-modal-close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;
  background:var(--beige);border:none;font-size:18px;color:var(--ink);
  display:flex;align-items:center;justify-content:center;transition:background .2s ease;
  z-index:2;
}
.teacher-modal-close:hover{background:var(--olive-pale);color:var(--olive-deep);}
.teacher-modal img{
  max-width:900px;width:100%;margin:0 auto;border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
}
.teacher-modal-cta{margin-top:24px;}

/* =====================================================
   ② 영어회화 학습정보 (3x2 갤러리)
===================================================== */
.learning-section{padding:clamp(60px,7vw,90px) 0;background:var(--soft-gray);}
.learning-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease, box-shadow .25s ease;
  display:block;
}
.post-card:hover{transform:translateY(-6px);box-shadow:0 22px 46px -20px rgba(15,23,42,0.17);}
.post-thumb{width:100%;aspect-ratio:16/10;background:var(--beige);background-size:cover;background-position:center;}
.post-body{padding:20px 20px 22px;}
.post-title{
  font-size:18px;font-weight:800;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-date{margin-top:12px;font-size:13px;color:var(--ink-faint);}
.learning-more{text-align:center;margin-top:clamp(28px,3.5vw,40px);}

@media(max-width:1080px){.learning-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.learning-grid{grid-template-columns:1fr;}}

/* =====================================================
   ③ 최종 CTA
===================================================== */
.final-cta{padding:clamp(70px,8vw,110px) 0;text-align:center;}
.final-cta h2{font-size:clamp(24.5px,2.6vw,36px);}
.final-cta-actions{margin-top:26px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap;}

/* =====================================================
   과목 상세페이지 공통 (국어/영어/수학/사회/과학)
===================================================== */

/* -- 과목 Hero -- */
.subject-hero2{padding:clamp(60px,7vw,90px) 0 clamp(40px,5vw,56px);text-align:center;}
.subject-hero2 .eyebrow{justify-content:center;}
.subject-hero2 h1{margin-top:14px;font-size:clamp(31.5px,3.4vw,47px);font-weight:800;line-height:1.4;}
.subject-hero2 p{margin-top:12px;color:var(--ink-soft);font-size:17.5px;}
.subject-hero2-actions{margin-top:26px;}

/* -- 상세 소개 이미지 (교체만 하면 되는 영역) -- */
.subject-detail{padding:0 0 clamp(60px,7vw,90px);}
.subject-detail-img{
  max-width:1100px;margin:0 auto;
}
.subject-detail-img img{max-width:100%;height:auto;display:block;margin:0 auto;}

/* -- 상세 이미지 준비 중 안내 (Placeholder) -- */
.subject-detail-placeholder{
  max-width:720px;margin:0 auto;
  border:1px dashed var(--line-strong);border-radius:var(--r-lg);
  background:var(--soft-gray);
  padding:clamp(60px,8vw,100px) 24px;
  text-align:center;
}
.subject-detail-placeholder .ph-icon{font-size:38px;}
.subject-detail-placeholder p{margin-top:14px;color:var(--ink-soft);font-size:17px;line-height:1.8;}

/* =====================================================
   Footer (메인 홈페이지 Footer 그대로 재사용)
===================================================== */
.site-footer{border-top:1px solid var(--line);padding:50px 0 36px;}
.footer-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.footer-brand .logo{display:block;margin-bottom:14px;}
.footer-brand p{font-size:15px;color:var(--ink-faint);line-height:1.9;max-width:320px;}
.footer-cols{display:flex;gap:64px;flex-wrap:wrap;}
.footer-col h5{font-size:15px;font-weight:700;color:var(--ink-soft);margin-bottom:14px;}
.footer-col a,.footer-col span{display:block;font-size:15px;color:var(--ink-faint);line-height:2.1;}
.footer-sns{display:flex;gap:10px;margin-top:14px;}
.footer-sns a{width:34px;height:34px;border-radius:50%;background:var(--beige);display:flex;align-items:center;justify-content:center;font-size:14.5px;color:var(--ink-soft);}
.footer-bottom{margin-top:40px;padding-top:24px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-faint);}

/* =====================================================
   Floating Menu (메인 홈페이지 그대로 재사용)
===================================================== */
.floating-menu{position:fixed;right:24px;bottom:90px;z-index:250;display:flex;flex-direction:column;gap:12px;}
.float-btn{
  position:relative;width:52px;height:52px;border-radius:50%;border:none;
  display:flex;align-items:center;justify-content:center;font-size:23.5px;
  box-shadow:0 12px 26px -10px rgba(15,23,42,0.24);
  transition:transform .2s ease;
}
.float-btn:hover{transform:translateY(-3px);}
.float-btn.kakao{background:#FBE54D;color:#391B1B;}
.float-btn.consult{background:var(--olive-deep);color:#fff;}
.float-btn.insta{background:radial-gradient(circle at 30% 110%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);color:#fff;}
.float-btn.phone{background:#fff;color:var(--olive-deep);border:1px solid var(--line-strong);}
.float-btn.top{background:#fff;color:var(--ink);border:1px solid var(--line-strong);font-size:18px;}
.float-tooltip{
  position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(6px);
  background:var(--ink);color:#fff;font-size:14px;font-weight:600;
  padding:7px 12px;border-radius:8px;white-space:nowrap;
  opacity:0;visibility:hidden;transition:opacity .2s ease, transform .2s ease;
}
.float-tooltip::after{content:"";position:absolute;left:100%;top:50%;transform:translateY(-50%);border:5px solid transparent;border-left-color:var(--ink);}
.float-btn:hover .float-tooltip{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0);}

@media (max-width:640px){
  .floating-menu{right:14px;bottom:18px;gap:10px;}
  .float-btn{width:46px;height:46px;font-size:20px;}
  .float-tooltip{display:none;}
}


/* ===================== 제2외국어 프리미엄 드롭다운 ===================== */
.dropdown.dropdown-premium{
  min-width:248px;background:#FFFFFF;border:none;
  border-radius:18px;box-shadow:0 12px 32px rgba(20,20,20,.10);
  padding:8px;display:flex;flex-direction:column;gap:7px;
}
.dropdown-card-item{
  display:flex;align-items:flex-start;gap:10px;
  padding:13px 14px;border-radius:14px;text-decoration:none;
  transition:background .2s ease, transform .2s ease;
}
.dropdown-card-item:hover{background:#F6F8FC;transform:translateX(4px);}
.dropdown-card-icon{font-size:22.5px;line-height:1.3;flex-shrink:0;}
.dropdown-card-text{display:flex;flex-direction:column;gap:2px;}
.dropdown-card-title{font-size:18px;font-weight:600;color:var(--ink);line-height:1.3;}
.dropdown-card-desc{font-size:14.5px;color:var(--ink-faint);line-height:1.3;}

/* ===================== 과목 페이지 인트로 (Hero + 소개 + 장점 카드) ===================== */
.lang-hero{
  width:100%;height:320px;overflow:hidden;
  border-radius:0 0 var(--r-xl) var(--r-xl);
  background:var(--olive-pale);
  display:flex;align-items:center;justify-content:center;
}
.lang-hero img{width:100%;height:100%;object-fit:contain;display:block;}

@media(max-width:720px){
  .lang-hero{height:240px;}
}

.lang-intro{padding:clamp(48px,6vw,72px) 0 clamp(24px,3vw,32px);text-align:center;}
.lang-intro h2{font-size:clamp(31.5px,3.2vw,42.5px);font-weight:800;color:var(--ink);letter-spacing:-.02em;}
.lang-intro p{
  margin:16px auto 0;max-width:600px;
  font-size:19px;line-height:1.8;color:var(--ink-soft);
}

.lang-perks{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  max-width:960px;margin:clamp(32px,4vw,44px) auto clamp(56px,6vw,80px);
  padding:0 20px;
}
.lang-perk-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 20px;text-align:center;
  box-shadow:var(--shadow-card);
}
.lang-perk-icon{font-size:36px;line-height:1;margin-bottom:14px;}
.lang-perk-text{font-size:17.5px;font-weight:600;color:var(--ink);line-height:1.5;}

@media(max-width:720px){
  .lang-perks{grid-template-columns:1fr;}
}

/* =====================================================
   모바일 전용 레이아웃 (max-width:768px)
   PC 레이아웃을 그대로 축소하지 않고, 모바일 전용으로 재배치합니다.
   - 헤더: 햄버거 메뉴만 노출
   - 히어로: 이미지 폭 88% 제한
   - 플로팅 버튼: 카카오톡 + 전화 2개만 노출
===================================================== */
@media(max-width:768px){
  /* ---- Header / Nav: 로고 + 햄버거만 ---- */
  .nav-row{height:60px;}
  .logo{font-size:20px;}
  .nav-menu{display:none;}
  .nav-actions{gap:10px;}
  .nav-actions .btn-primary{display:none;}
  .hamburger{display:inline-flex;}

  /* ---- 컨테이너 좌우 여백 20px ---- */
  .container{padding-left:20px;padding-right:20px;}

  /* ---- 버튼 터치 영역 48~56px ---- */
  .btn-primary,.btn-ghost{min-height:52px;padding:14px 26px;font-size:16px;}
  .mobile-cta .btn{height:52px;font-size:16.5px;}

  /* ---- 과목 히어로 (텍스트형, 현재 미사용이지만 대비) ---- */
  .subject-hero2{padding:32px 0 24px;}
  .subject-hero2 h1{font-size:clamp(30px,8vw,38px);}
  .subject-hero2 p{font-size:16px;}

  /* ---- 상세 이미지형 페이지 (국어·수학·과학·오픽 등) ---- */
  .subject-detail{padding:20px 0 56px;}
  .subject-detail-img{
    width:88%;margin:0 auto;border-radius:20px;overflow:hidden;
    box-shadow:0 20px 40px -26px rgba(15,23,42,.22);
  }

  /* ---- 제2외국어형 히어로 (.lang-hero / .lang-intro) ---- */
  .lang-hero{width:88%;margin:0 auto;height:auto;aspect-ratio:4/3;border-radius:20px;}
  .lang-intro{padding:32px 20px 8px;}
  .lang-intro h2{font-size:clamp(30px,8vw,38px);}
  .lang-intro p{font-size:16px;margin-top:12px;}
  .lang-perks{padding:0;margin-top:24px;gap:12px;}
  .lang-perk-card{padding:22px 16px;}

  /* ---- 섹션 · 카드 간격 넉넉하게 ---- */
  .learning-section{padding:44px 0;}
  .learning-grid{gap:16px;}
  .section-head{margin-bottom:28px;}
  .final-cta{padding:52px 0;}

  /* ---- 플로팅 버튼: 카카오톡 + 전화 2개만 노출 ---- */
  .float-btn.insta,.float-btn.top,.float-btn.consult{display:none!important;}
  .floating-menu{right:18px;bottom:22px;gap:12px;flex-direction:column;}
  .float-btn{width:56px;height:56px;font-size:24px;box-shadow:0 14px 30px -14px rgba(15,23,42,.3);}
  .float-tooltip{display:none;}
}