/* ============================================================
   学習塾RENA｜サイト共通スタイルシート
   ・全ページで読み込む土台（デザインシステム）
   ・全体の変更（メインカラー・ボタン等）はこのファイルを直せば全ページ反映
   ============================================================ */

/* ---------- デザイントークン ---------- */
:root{
  --green:      #0c3b38;   /* ディープグリーン（見出し・濃背景） */
  --teal:       #00a199;   /* ティール（アクセント・ボタン） */
  --teal-light: #5fd6cc;   /* ライトティール（濃背景上の差し色） */
  --gold:       #c0862f;   /* ゴールド（強調ライン・特別ボタン） */
  --cream:      #f8f4ea;   /* 生成り背景 */
  --ink:        #332f26;   /* 本文テキスト */
  --ink-soft:   #4c564f;   /* やわらかい本文 */
  --ink-mute:   #7d857d;   /* 注釈 */
  --line:       #e7ddc8;   /* カード境界（暖色系） */
  --line-cool:  #d7e6e2;   /* カード境界（寒色系） */

  --serif: 'Shippori Mincho', serif;
  --sans:  'Zen Kaku Gothic New', system-ui, sans-serif;

  --wrap: 1172px;                 /* 中身の最大幅 */
  --gutter: clamp(20px, 5vw, 54px); /* 左右の余白 */
  --radius: 16px;
  --header-h: 74px;
}

/* ---------- リセット ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--cream);
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p{margin:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
em{font-style:normal}

/* ---------- 共通レイアウト ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.center{text-align:center}

/* セクション上下の余白 */
main > section{ padding-block: clamp(52px, 8vw, 78px); }

/* ---------- 共通パーツ ---------- */
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.18em;font-weight:700;
  color:var(--teal);margin-bottom:12px;
}
.eyebrow-light{color:var(--teal-light)}
.rule{width:26px;height:1.5px;background:var(--teal);flex:none}
.rule-light{background:var(--teal-light)}

.accent-bar{display:block;width:60px;height:2px;background:var(--gold);margin:22px 0}
.accent-bar-sm{width:44px;margin:12px 0 16px}

.sec-head{text-align:center;margin-bottom:clamp(32px,5vw,46px)}
.sec-head .eyebrow{justify-content:center}
.sec-title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(24px,3.4vw,30px);letter-spacing:.04em;color:var(--green);
}
.sec-title-left{text-align:left}
.sec-desc{
  font-size:14px;line-height:1.95;color:#55605a;
  max-width:640px;margin:14px auto 0;
}

/* ボタン */
.btn{
  display:inline-block;font-weight:700;font-size:14.5px;
  padding:15px 30px;border-radius:8px;transition:.2s ease;
  cursor:pointer;border:0;
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--teal);color:#fff;box-shadow:0 12px 24px -14px rgba(0,161,153,.9)}
.btn-outline{border:1.5px solid var(--green);color:var(--green)}
.btn-outline:hover{background:var(--green);color:#fff}
.btn-dark{background:var(--green);color:#fff;white-space:nowrap}
.btn-gold{background:var(--gold);color:#fff;border-radius:999px;padding:15px 34px;font-size:15px;box-shadow:0 14px 26px -12px rgba(192,134,47,.8)}
.btn-text{color:var(--green);padding:15px 6px;border-bottom:2px solid #b9d8d4;border-radius:0}
.btn-text:hover{transform:none;border-bottom-color:var(--teal)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-pill{border-radius:999px;padding:16px 36px;font-size:15px}

.link-arrow{font-size:13px;font-weight:700;color:var(--teal)}
.link-arrow:hover{text-decoration:underline}

/* 写真プレースホルダ（本番は img に差し替え） */
.ph{
  display:flex;align-items:center;justify-content:center;
  background:repeating-linear-gradient(135deg,#e7e0d0 0 12px,#efe9dc 12px 24px);
  color:#9a927f;font:600 12px ui-monospace,monospace;text-align:center;padding:8px;
}
.ph::after{content:attr(data-ph)}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(248,244,234,.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(12,59,56,.08);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:var(--header-h);
}
.brand{display:flex;align-items:baseline;gap:8px}
.brand-mark{
  font-family:var(--serif);font-weight:800;font-size:24px;
  letter-spacing:.08em;color:var(--green);
}
.brand-sub{font-size:11px;font-weight:700;letter-spacing:.1em;color:var(--teal)}
.nav{display:flex;align-items:center;gap:clamp(14px,2vw,28px)}
.nav a{font-size:14px;font-weight:700;color:var(--green);transition:color .2s}
.nav a:hover{color:var(--teal)}
.nav .nav-cta{
  background:var(--teal);color:#fff;padding:10px 20px;border-radius:999px;
}
.nav .nav-cta:hover{color:#fff;background:#008b84}
.hamburger{
  display:none;flex-direction:column;gap:5px;
  width:44px;height:44px;align-items:center;justify-content:center;
  background:none;border:0;cursor:pointer;
}
.hamburger span{
  width:24px;height:2px;background:var(--green);border-radius:2px;
  transition:.3s ease;
}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============================================================
   HERO
   ============================================================ */
.hero{padding-block:0!important;background:var(--cream)}
.hero-grid{
  display:grid;grid-template-columns:0.88fr 1.12fr;
  align-items:center;gap:clamp(24px,4vw,48px);
}
.hero-copy{padding-block:clamp(40px,6vw,64px)}
.hero-title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(32px,4.6vw,48px);line-height:1.42;letter-spacing:.02em;
  color:var(--green);margin-bottom:0;
}
.hero-title-sub{font-size:clamp(20px,2.8vw,29px);color:#3a443f}
.hero-lead{
  font-size:15px;line-height:2.05;color:var(--ink-soft);
  max-width:440px;margin-bottom:34px;
}
.hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.hero-media img{width:100%;height:auto;border-radius:4px}

/* ============================================================
   MISSION
   ============================================================ */
.mission{
  background:var(--green);color:#e9f2f0;position:relative;overflow:hidden;
}
.mission::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(110% 120% at 90% -20%,rgba(0,161,153,.22),transparent 60%);
}
.mission .wrap{position:relative}
.mission-text{
  font-family:var(--serif);font-size:clamp(20px,2.9vw,27px);line-height:1.9;
  max-width:900px;letter-spacing:.02em;
}
.mission-text em{color:var(--teal-light)}

/* ============================================================
   CAPACITY
   ============================================================ */
.cap-card{
  max-width:720px;margin:0 auto;background:#fff;
  border:1px solid var(--line-cool);border-radius:var(--radius);overflow:hidden;
  box-shadow:0 20px 44px -34px rgba(12,59,56,.5);
}
.cap-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 26px;border-bottom:1px solid #eee3cf;
}
.cap-row:last-child{border-bottom:0}
.cap-grade{font-weight:700;color:var(--green)}
.badge{font-size:13px;font-weight:700;padding:6px 15px;border-radius:999px}
.badge-open{color:#0c7a6f;background:#e2f2ed}
.badge-few{color:#a96f22;background:#fbf0dd}
.cap-note{
  font-size:12px;line-height:1.85;color:var(--ink-mute);
  max-width:720px;margin:18px auto 0;text-align:center;
}
.capacity .center{margin-top:26px}

/* ============================================================
   TEST RESULTS BANNER
   ============================================================ */
.results-banner{
  background:var(--green);color:#eaf3f1;position:relative;overflow:hidden;
}
.results-banner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(100% 120% at 88% -10%,rgba(0,161,153,.26),transparent 60%),
    radial-gradient(90% 120% at -8% 110%,rgba(192,134,47,.2),transparent 62%);
}
.results-grid{
  position:relative;display:grid;grid-template-columns:1.15fr .85fr;
  gap:40px;align-items:center;
}
.banner-title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(28px,4vw,38px);line-height:1.36;color:#fff;letter-spacing:.03em;
}
.banner-lead{font-size:15px;line-height:2;color:#c4d7d2;max-width:520px;margin-bottom:28px}
.stat-cards{display:flex;gap:12px}
.stat-card{
  flex:1;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);
  border-radius:14px;padding:22px 16px;text-align:center;
}
.stat-num{font-family:var(--serif);font-weight:700;color:#fff;font-size:34px;line-height:1}
.stat-num span{font-size:15px;color:var(--teal-light);margin-left:2px}
.stat-label{font-size:11px;letter-spacing:.08em;font-weight:700;color:#9fbcb6;margin-top:9px}

/* ============================================================
   WHY / FEATURE CARDS
   ============================================================ */
.why-grid,.course-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:26px;
}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:38px 34px;box-shadow:0 18px 40px -34px rgba(120,90,30,.5);
}
.card-kicker{font-size:11.5px;letter-spacing:.14em;color:var(--teal);font-weight:700;margin-bottom:6px}
.card-title{font-family:var(--serif);font-size:clamp(20px,2.6vw,23px);color:var(--green)}
.card-body{font-size:14px;line-height:2;color:var(--ink-soft)}

/* ============================================================
   COURSES
   ============================================================ */
.courses{padding-top:0!important}
.course-card{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
}
.course-photo{height:180px}
.course-body{padding:32px 32px 34px}
.chips{display:flex;gap:7px;flex-wrap:wrap;margin:14px 0 18px}
.chip{font-size:12px;font-weight:700;color:var(--green);background:#eaf3f1;padding:6px 12px;border-radius:7px}
.course-text{font-size:13.5px;line-height:1.95;color:var(--ink-soft);margin-bottom:10px}
.course-text b{color:var(--green)}
.course-card .link-arrow{margin-top:8px;display:inline-block}

/* ============================================================
   RESULTS (admission)
   ============================================================ */
.admission{background:var(--cream)}
.admission-inner{
  display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center;
  max-width:960px;margin:0 auto;
}
.admission-text{font-size:14px;line-height:1.95;color:var(--ink-soft);margin-top:12px}

/* ============================================================
   VOICE (swiper)
   ============================================================ */
.voiceSwiper{padding-bottom:8px}
.voiceSwiper .swiper-slide{height:auto}
.voiceSwiper .swiper-slide img{width:100%;height:auto;border-radius:14px}
.voiceSwiper .swiper-button-next,
.voiceSwiper .swiper-button-prev{color:var(--teal)}
.voiceSwiper .swiper-pagination-bullet-active{background:var(--teal)}
.voice .center{margin-top:30px}

/* ============================================================
   STUDY SPACE
   ============================================================ */
.study{padding-top:0!important}
.study-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.study-item{
  margin:0;border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line);
}
.study-photo{height:300px}
.study-item figcaption{font-size:13px;font-weight:700;color:var(--green);text-align:center;padding:16px 10px}

/* ============================================================
   AFTER GRADUATION
   ============================================================ */
.after{position:relative;overflow:hidden;padding:0!important}
.after-photo{position:absolute;inset:0;height:100%}
.after-photo::after{color:#8a8270}
.after-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(12,59,56,.92) 0%,rgba(12,59,56,.78) 46%,rgba(12,59,56,.28) 100%);
}
.after-inner{position:relative;min-height:420px;display:flex;align-items:center}
.after-copy{max-width:560px;color:#eaf3f1;padding-block:48px}
.after-title{font-family:var(--serif);font-weight:700;font-size:clamp(24px,3.4vw,30px);color:#fff;letter-spacing:.03em;margin-bottom:18px}
.after-text{font-size:14.5px;line-height:2.05;color:#cfe0dc}

/* ============================================================
   ACCESS
   ============================================================ */
.access{background:var(--cream)}
.access-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:26px;
  align-items:stretch;max-width:1000px;margin:0 auto;
}
.access-info{background:#fff;border:1px solid var(--line-cool);border-radius:var(--radius);overflow:hidden}
.info-row{display:flex;padding:18px 22px;border-bottom:1px solid #eee3cf;gap:14px}
.info-row:last-child{border-bottom:0}
.info-label{width:64px;flex:none;font-size:12px;font-weight:700;color:var(--teal);letter-spacing:.06em}
.info-val{font-size:14px;color:var(--ink);line-height:1.7}
.info-tel{font-size:14px;color:var(--green);font-weight:700}
.access-map{width:100%;min-height:340px;border:0;border-radius:var(--radius)}

/* ============================================================
   CTA
   ============================================================ */
.cta{text-align:center;background:var(--green);color:#eaf3f1;position:relative;overflow:hidden}
.cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(90% 120% at 50% -20%,rgba(0,161,153,.22),transparent 60%);
}
.cta .wrap{position:relative}
.cta .eyebrow{justify-content:center}
.cta-title{font-family:var(--serif);font-weight:600;font-size:clamp(24px,3.4vw,30px);color:#fff;letter-spacing:.03em;margin-bottom:14px}
.cta-lead{font-size:14.5px;line-height:1.9;color:#b7cabf;margin-bottom:30px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{background:#082825;color:#c4d7d2}
.footer-inner{
  display:grid;grid-template-columns:1fr auto;gap:40px;
  padding-block:clamp(40px,6vw,56px);align-items:start;
}
.footer-brand .brand-mark{color:#fff}
.footer-tagline{font-family:var(--serif);font-size:15px;color:var(--teal-light);margin-top:10px}
.footer-addr{font-size:13px;line-height:1.9;color:#8fa8a3;margin-top:14px}
.footer-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px 40px}
.footer-nav a{font-size:13.5px;color:#c4d7d2;font-weight:500}
.footer-nav a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-block:18px;font-size:12px;color:#6f8983}
.footer-bottom .wrap{text-align:center}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:860px){
  .nav{
    position:fixed;inset:var(--header-h) 0 auto 0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--cream);border-bottom:1px solid rgba(12,59,56,.1);
    padding:8px 0 16px;
    transform:translateY(-120%);transition:transform .32s ease;
    box-shadow:0 20px 30px -24px rgba(0,0,0,.4);
  }
  .nav.open{transform:translateY(0)}
  .nav a{padding:14px var(--gutter);border-top:1px solid rgba(12,59,56,.06)}
  .nav .nav-cta{margin:12px var(--gutter) 0;text-align:center;border-radius:8px}
  .hamburger{display:flex}

  .hero-grid{grid-template-columns:1fr}
  .hero-media{order:-1}
  .hero-copy{padding-top:36px;padding-bottom:8px}
  .hero-lead{max-width:none}

  .results-grid{grid-template-columns:1fr;gap:28px}
  .admission-inner{grid-template-columns:1fr;text-align:left}
  .admission-inner .btn-dark{justify-self:start}
  .footer-inner{grid-template-columns:1fr;gap:28px}
}

@media (max-width:480px){
  .btn{width:100%;text-align:center}
  .hero-actions,.cta-actions{flex-direction:column;align-items:stretch}
  .btn-text{border-bottom:0}
  .footer-nav{grid-template-columns:1fr}
}

/* ============================================================
   追加: ロゴ(マーク+学習塾RENA) と 夏期講習バナー  2026-07-05
   ============================================================ */
.brand{align-items:center;gap:10px}
.brand-logo{height:40px;width:auto;display:block}
.brand-text{display:flex;align-items:baseline;gap:7px}
.brand-mark{color:var(--teal)}
.brand-sub{font-family:var(--serif);font-size:16px;font-weight:700;letter-spacing:.06em;color:var(--ink)}
.footer-brand .brand-logo{height:46px}
.footer-brand .brand-mark{color:var(--teal-light)}
.footer-brand .brand-sub{color:#f8f4ea}

.summer-banner{background:#0a7ea4;color:#fff} /* LP(summer.css)の--sky-deepと同色 */
.summer-banner-inner{display:flex;align-items:center;gap:16px 22px;flex-wrap:wrap;padding-block:16px}
.summer-banner-badge{
  background:#fff;color:#0a7ea4;font-weight:900;font-size:12px;
  padding:5px 14px;border-radius:999px;letter-spacing:.08em;white-space:nowrap;
}
.summer-banner-text{font-size:15px;font-weight:700;flex:1;min-width:220px;margin:0}
.summer-banner-text strong{font-family:var(--serif);font-size:20px;font-weight:800;margin-right:10px;letter-spacing:.04em}
.btn-invert{background:#ef8f3c;color:#fff;border-radius:999px;font-weight:900} /* LPの--orangeと同色 */
.btn-invert:hover{background:#c96a1c}
@media (max-width:640px){
  .summer-banner-inner{gap:10px}
  .summer-banner-text strong{display:block;margin-bottom:2px}
}

/* ============================================================
   追加: 写真の実画像化 と FACILITYギャラリー  2026-07-06
   ============================================================ */
img.course-photo{width:100%;object-fit:cover;display:block}
img.study-photo{width:100%;object-fit:cover;display:block}

.facility-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.facility-item{
  margin:0;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:#fff;
}
.facility-item img{width:100%;height:240px;object-fit:cover;display:block}
.facility-item.is-wide{grid-column:1/-1}
.facility-item.is-wide img{height:min(46vw,380px)}
.facility-item figcaption{font-size:13px;font-weight:700;color:var(--green);text-align:center;padding:14px 10px}
@media (max-width:640px){
  .facility-grid{grid-template-columns:1fr}
  .facility-item img{height:210px}
}

/* ============================================================
   追加: 準備中ページ  2026-07-06
   ============================================================ */
.cs-hero{background:var(--cream);min-height:60vh;display:flex;align-items:center}
.cs-inner{padding-block:clamp(48px,8vw,90px);text-align:left;max-width:680px}
.cs-title{font-family:var(--serif);font-weight:800;color:var(--green);font-size:clamp(24px,4.2vw,38px);line-height:1.5;margin-top:14px}
.cs-lead{font-size:15px;line-height:2.1;color:var(--ink-soft);margin-top:18px}
.cs-contact{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px;margin-top:28px}
.cs-contact-title{font-size:13px;font-weight:900;color:var(--green);letter-spacing:.04em}
.cs-tel{display:inline-block;font-family:var(--serif);font-weight:800;font-size:32px;color:var(--teal);margin-top:6px;letter-spacing:.04em}
.cs-hours{font-size:12.5px;color:var(--ink-mute);margin-top:2px}
.cs-mail{font-size:13.5px;color:var(--ink-soft);margin-top:10px}
.cs-actions{margin-top:30px}