/* ==========================================================
   Sakura Japanese Language Training Center
   Global stylesheet
   ========================================================== */

:root{
  --red:#1E3A8A;          /* primary — indigo (aiiro) */
  --red-dark:#132a63;
  --pink:#F7C6D0;
  --pink-strong:#E85A7C;  /* sakura accent */
  --ink:#111111;
  --ink-soft:#333333;
  --muted:#6b6b6b;
  --washi:#ffffff;
  --gray:#EEF1F6;
  --white:#ffffff;
  --shadow-sm:0 2px 8px rgba(17,17,17,.06);
  --shadow-md:0 12px 30px rgba(30,58,138,.12);
  --shadow-lg:0 20px 50px rgba(17,17,17,.15);
  --radius:16px;
  --radius-sm:10px;
  --transition:all .3s cubic-bezier(.4,0,.2,1);
  --font-display:'Shippori Mincho','Noto Serif JP',serif;
  --font-body:'Noto Sans JP','Inter',system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  color:var(--ink);
  background:#ffffff;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:600;
  color:var(--ink);
  letter-spacing:-.01em;
}
h1{font-size:clamp(2.2rem,5vw,3.75rem);line-height:1.1}
h2{font-size:clamp(1.8rem,3.5vw,2.6rem);line-height:1.2}
h3{font-size:clamp(1.3rem,2.2vw,1.6rem)}

a{color:var(--red);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--red-dark)}

.container{max-width:1200px}

/* ---------- Section basics ---------- */
.section{padding:96px 0;position:relative}
.section-sm{padding:64px 0}
.section-title{margin-bottom:12px}
.section-kana{
  font-family:var(--font-display);
  color:var(--red);
  font-size:1rem;
  letter-spacing:.4em;
  text-transform:uppercase;
  margin-bottom:8px;
  display:inline-block;
}
.section-lead{color:var(--muted);max-width:640px;margin:0 auto 48px}
.text-red{color:var(--red)!important}
.bg-washi{background:var(--washi)}
.bg-ink{background:var(--ink);color:#f5f5f5}
.bg-ink h1,.bg-ink h2,.bg-ink h3{color:#fff}

/* ---------- Navbar ---------- */
.navbar{
  padding:18px 0;
  background:rgba(250,247,242,.85);
  backdrop-filter:saturate(180%) blur(12px);
  transition:var(--transition);
  border-bottom:1px solid transparent;
}
.navbar.scrolled{
  padding:10px 0;
  background:rgba(250,247,242,.95);
  border-bottom-color:var(--gray);
  box-shadow:var(--shadow-sm);
}
.navbar-brand{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.35rem;
  color:var(--ink);
  display:flex;align-items:center;gap:12px;line-height:1.1;
}
.navbar-brand .kana{color:var(--red);font-weight:600}
.navbar-brand .petal{
  width:34px;height:34px;display:inline-block;flex-shrink:0;
  background:radial-gradient(circle at 30% 30%,var(--pink),var(--pink-strong));
  border-radius:50% 0 50% 0;transform:rotate(-15deg);
}
.navbar-brand .brand-text{display:flex;flex-direction:column;line-height:1.05}
.navbar-brand .brand-text .tagline{
  font-family:var(--font-body);font-weight:500;font-size:.68rem;
  letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-top:2px;
}
.navbar-nav .nav-link{
  color:var(--ink)!important;
  font-weight:500;
  padding:8px 14px!important;
  position:relative;
}
.navbar-nav .nav-link::after{
  content:'';position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;background:var(--red);
  transform:scaleX(0);transform-origin:right;
  transition:transform .3s ease;
}
.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after{transform:scaleX(1);transform-origin:left}
.navbar-nav .nav-link.active{color:var(--red)!important}

/* ---------- Buttons ---------- */
.btn{
  border-radius:999px;
  font-weight:600;
  padding:12px 28px;
  transition:var(--transition);
  border:2px solid transparent;
  letter-spacing:.02em;
}
.btn-primary,.btn-red{
  background:var(--red);color:#fff;border-color:var(--red);
  box-shadow:0 6px 18px rgba(188,0,45,.25);
}
.btn-primary:hover,.btn-red:hover{
  background:var(--red-dark);border-color:var(--red-dark);
  color:#fff;transform:translateY(-2px);
  box-shadow:0 12px 24px rgba(188,0,45,.35);
}
.btn-ghost{
  background:transparent;color:var(--red);border-color:var(--red);
}
.btn-ghost:hover{background:var(--red);color:#fff;transform:translateY(-2px)}
.btn-dark{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-dark:hover{background:#000;color:#fff;transform:translateY(-2px)}
.btn-lg{padding:14px 34px;font-size:1.05rem}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:140px 0 100px;
  overflow:hidden;
  background:
    radial-gradient(circle at 85% 20%,rgba(247,198,208,.35),transparent 50%),
    radial-gradient(circle at 10% 90%,rgba(232,90,124,.15),transparent 45%),
    var(--washi);
}
.hero-eyebrow{
  color:var(--red);letter-spacing:.4em;font-weight:600;
  text-transform:uppercase;font-size:.85rem;margin-bottom:20px;
}
.hero h1 span.accent{color:var(--red);position:relative}
.hero h1 span.accent::after{
  content:'';position:absolute;left:0;right:0;bottom:4px;height:12px;
  background:var(--pink);z-index:-1;border-radius:4px;opacity:.6;
}
.hero-lead{font-size:1.15rem;color:var(--ink-soft);max-width:560px;margin:24px 0 36px}
.hero-visual{position:relative}
.hero-photo{
  width:100%;aspect-ratio:1;border-radius:50%;object-fit:cover;
  box-shadow:0 30px 60px rgba(30,58,138,.28);
  border:8px solid #fff;position:relative;z-index:1;
}
.hero-circle{display:none}

.hero-badge{
  position:absolute;background:#fff;border-radius:var(--radius);
  padding:14px 20px;box-shadow:var(--shadow-lg);display:flex;gap:12px;align-items:center;
}
.hero-badge .num{font-family:var(--font-display);font-size:1.6rem;color:var(--red);font-weight:700;line-height:1}
.hero-badge .lbl{font-size:.8rem;color:var(--muted)}
.hero-badge.b1{top:12%;left:-10px}
.hero-badge.b2{bottom:14%;right:-10px}

/* ---------- Petals ---------- */
.petals-canvas{position:absolute;inset:0;pointer-events:none;z-index:0}
.hero .container{position:relative;z-index:1}

/* ---------- Feature strip ---------- */
.feature-strip{
  background:#fff;border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:32px;margin-top:-60px;position:relative;z-index:2;
}
.feature-item{display:flex;gap:14px;align-items:flex-start}
.feature-item i{color:var(--red);font-size:1.6rem;flex-shrink:0}
.feature-item h5{margin:0 0 4px;font-size:1rem}
.feature-item p{margin:0;color:var(--muted);font-size:.9rem}

/* ---------- Cards ---------- */
.card-sakura{
  background:#fff;border:none;border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:var(--transition);position:relative;height:100%;
  border-top:3px solid transparent;
}
.card-sakura::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--red),var(--pink-strong));
  transform:scaleX(0);transform-origin:left;transition:transform .4s ease;
}
.card-sakura:hover{transform:translateY(-8px);box-shadow:var(--shadow-md)}
.card-sakura:hover::before{transform:scaleX(1)}
.card-sakura .card-body{padding:28px}
.card-sakura .tag{
  display:inline-block;background:var(--pink);color:var(--red-dark);
  padding:4px 12px;border-radius:999px;font-size:.75rem;font-weight:600;
  letter-spacing:.05em;margin-bottom:14px;
}
.card-sakura h3{margin-bottom:10px;font-size:1.35rem}
.card-sakura p{color:var(--muted);margin-bottom:16px}
.card-sakura .meta{display:flex;gap:16px;color:var(--muted);font-size:.85rem;margin-bottom:18px}
.card-sakura .meta i{color:var(--red);margin-right:4px}

/* Course card image */
.course-img{
  height:200px;background:linear-gradient(135deg,var(--pink),var(--red));
  display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;
  font-family:var(--font-display);font-size:4rem;color:rgba(255,255,255,.8);font-weight:700;
}
.course-img img{width:100%;height:100%;object-fit:cover;display:block}
.course-img .badge-n{
  position:absolute;top:14px;left:14px;background:rgba(255,255,255,.95);
  color:var(--red);padding:6px 12px;border-radius:999px;
  font-family:var(--font-display);font-weight:700;font-size:.9rem;letter-spacing:.05em;
}


/* Teacher card */
.teacher-card{text-align:center;padding:36px 24px}
.teacher-avatar{
  width:120px;height:120px;border-radius:50%;
  margin:0 auto 20px;
  background:linear-gradient(135deg,var(--pink),var(--red));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-family:var(--font-display);font-size:2.5rem;font-weight:700;
  box-shadow:0 8px 20px rgba(188,0,45,.2);
  border:4px solid #fff;
}
.teacher-card h3{font-size:1.2rem;margin-bottom:4px}
.teacher-card .role{color:var(--red);font-size:.85rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px}
.socials{display:flex;gap:10px;justify-content:center;margin-top:16px}
.socials a{
  width:36px;height:36px;border-radius:50%;background:var(--washi);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
}
.socials a:hover{background:var(--red);color:#fff;transform:translateY(-3px)}

/* ---------- Stats ---------- */
.stat{text-align:center;padding:24px}
.stat .num{
  font-family:var(--font-display);font-size:3rem;font-weight:700;color:var(--red);line-height:1;
}
.stat .lbl{color:var(--muted);margin-top:8px;font-size:.95rem}

/* ---------- Testimonials ---------- */
.testimonial{
  background:#fff;border-radius:var(--radius);padding:32px;
  box-shadow:var(--shadow-sm);position:relative;height:100%;
}
.testimonial::before{
  content:'“';position:absolute;top:-10px;left:20px;
  font-family:var(--font-display);font-size:5rem;color:var(--pink);line-height:1;
}
.testimonial p{color:var(--ink-soft);margin:18px 0 20px;font-style:italic}
.testimonial .who{display:flex;align-items:center;gap:12px}
.testimonial .who .av{
  width:44px;height:44px;border-radius:50%;
  background:linear-gradient(135deg,var(--pink),var(--red));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;
}
.testimonial .who .n{font-weight:600}
.testimonial .who .r{font-size:.8rem;color:var(--muted)}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--red) 0%,var(--red-dark) 100%);
  color:#fff;border-radius:var(--radius);padding:56px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:'桜';position:absolute;right:-20px;bottom:-60px;
  font-family:var(--font-display);font-size:16rem;color:rgba(255,255,255,.08);font-weight:700;
}
.cta-band h2{color:#fff}
.cta-band .btn-primary{background:#fff;color:var(--red);border-color:#fff}
.cta-band .btn-primary:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- Page header ---------- */
.page-header{
  padding:140px 0 60px;
  background:
    radial-gradient(circle at 80% 30%,rgba(247,198,208,.4),transparent 50%),
    var(--washi);
  text-align:center;
}
.breadcrumbs{color:var(--muted);font-size:.9rem;margin-top:12px}
.breadcrumbs a{color:var(--red)}

/* ---------- Forms ---------- */
.form-card{
  background:#fff;border-radius:var(--radius);padding:40px;
  box-shadow:var(--shadow-sm);
}
.form-control,.form-select{
  border-radius:10px;border:1.5px solid var(--gray);padding:12px 16px;
  background:var(--washi);transition:var(--transition);
}
.form-control:focus,.form-select:focus{
  border-color:var(--red);box-shadow:0 0 0 4px rgba(188,0,45,.1);background:#fff;
}
.form-label{font-weight:600;color:var(--ink);margin-bottom:6px}

/* ---------- Notice list ---------- */
.notice-item{
  background:#fff;border-radius:var(--radius);padding:24px 28px;
  box-shadow:var(--shadow-sm);display:flex;gap:20px;align-items:center;
  transition:var(--transition);margin-bottom:16px;
  border-left:4px solid var(--red);
}
.notice-item:hover{transform:translateX(6px);box-shadow:var(--shadow-md)}
.notice-date{
  min-width:70px;text-align:center;
  background:var(--pink);color:var(--red-dark);border-radius:10px;padding:10px;
}
.notice-date .d{font-family:var(--font-display);font-size:1.6rem;font-weight:700;line-height:1}
.notice-date .m{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;margin-top:4px}
.notice-item h3{font-size:1.1rem;margin:0 0 4px}
.notice-item p{color:var(--muted);margin:0;font-size:.9rem}
.notice-item .tag{background:var(--washi);color:var(--red);font-size:.7rem;padding:3px 10px;border-radius:999px;font-weight:600}

/* ---------- Gallery ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:768px){.gallery-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.gallery-grid{grid-template-columns:1fr}}
.gallery-item{
  aspect-ratio:1;border-radius:var(--radius);overflow:hidden;
  position:relative;cursor:pointer;transition:var(--transition);
  background:linear-gradient(135deg,var(--pink),var(--red));
}
.gallery-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s ease}
.gallery-item:hover{transform:scale(1.02);box-shadow:var(--shadow-md)}
.gallery-item:hover img{transform:scale(1.08)}
.gallery-item::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to top,rgba(17,17,17,.7) 0%,rgba(17,17,17,0) 55%);
  opacity:1;transition:var(--transition);
}
.gallery-item .cap{
  position:absolute;bottom:16px;left:16px;right:16px;color:#fff;font-family:var(--font-body);
  font-size:.9rem;z-index:2;font-weight:500;
}


/* ---------- Auth ---------- */
.auth-wrap{
  min-height:100vh;display:flex;align-items:center;
  background:
    radial-gradient(circle at 20% 20%,rgba(247,198,208,.4),transparent 50%),
    radial-gradient(circle at 80% 80%,rgba(232,90,124,.2),transparent 50%),
    var(--washi);
  padding:100px 0 40px;
}
.auth-card{
  background:#fff;border-radius:var(--radius);padding:48px;
  box-shadow:var(--shadow-lg);max-width:460px;margin:0 auto;
}
.auth-card h2{text-align:center;margin-bottom:8px}
.auth-card .sub{text-align:center;color:var(--muted);margin-bottom:28px}

/* ---------- Footer ---------- */
.footer{
  background:var(--ink);color:#c9c9c9;padding:64px 0 24px;position:relative;overflow:hidden;
}
.footer::before{
  content:'桜';position:absolute;right:-40px;top:-40px;font-family:var(--font-display);
  font-size:14rem;color:rgba(255,255,255,.03);font-weight:700;
}
.footer h5{color:#fff;font-family:var(--font-display);margin-bottom:20px;font-size:1.1rem}
.footer a{color:#c9c9c9}
.footer a:hover{color:var(--pink)}
.footer ul{list-style:none;padding:0}
.footer ul li{margin-bottom:10px}
.footer .brand{color:#fff;font-family:var(--font-display);font-size:1.5rem;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.footer .brand .petal{
  width:26px;height:26px;
  background:radial-gradient(circle at 30% 30%,var(--pink),var(--pink-strong));
  border-radius:50% 0 50% 0;transform:rotate(-15deg);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:40px;padding-top:20px;
  text-align:center;font-size:.85rem;color:#888;
}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ---------- Accordion ---------- */
.accordion-item{border:none;background:transparent;margin-bottom:12px}
.accordion-button{
  background:#fff;border-radius:var(--radius)!important;
  font-weight:600;color:var(--ink);box-shadow:var(--shadow-sm);
}
.accordion-button:not(.collapsed){background:var(--pink);color:var(--red-dark);box-shadow:none}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(188,0,45,.15)}
.accordion-body{background:#fff;border-radius:0 0 var(--radius) var(--radius);color:var(--muted)}

/* Utilities */
.divider-jp{
  width:60px;height:3px;background:var(--red);margin:12px auto 24px;border-radius:2px;
}
.text-jp{font-family:var(--font-display)}

/* Responsive tweaks */
@media(max-width:991px){
  .section{padding:72px 0}
  .hero{padding:120px 0 60px;text-align:center}
  .hero-lead{margin-left:auto;margin-right:auto}
  .hero-visual{margin-top:40px;max-width:400px;margin-left:auto;margin-right:auto}
  .cta-band{padding:36px 24px;text-align:center}
  .feature-strip{margin-top:24px}
}

/* ---------- Success History ---------- */
.success-section{padding:96px 0;background:#fff;position:relative}
.success-section::before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 10% 10%,rgba(232,90,124,.06),transparent 40%),
  radial-gradient(circle at 90% 90%,rgba(30,58,138,.06),transparent 40%);pointer-events:none}
.success-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;position:relative}
.success-card{position:relative;overflow:hidden;border-radius:18px;box-shadow:var(--shadow-md);
  transition:var(--transition);background:#000;aspect-ratio:4/3}
.success-card img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .8s ease}
.success-card:hover img{transform:scale(1.06)}
.success-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.75));}
.success-card .cap{position:absolute;left:20px;right:20px;bottom:18px;color:#fff;z-index:2}
.success-card .cap .badge-jp{display:inline-block;background:var(--pink-strong);color:#fff;
  font-size:.7rem;letter-spacing:.15em;padding:4px 10px;border-radius:99px;margin-bottom:8px;text-transform:uppercase}
.success-card .cap h4{color:#fff;font-size:1.05rem;margin:0 0 4px}
.success-card .cap p{margin:0;font-size:.82rem;opacity:.9}
@media (max-width: 900px){
  .success-grid{grid-template-columns:1fr}
}

/* ---------- Teacher photo + Owner ---------- */
.teacher-photo{
  width:150px;height:150px;border-radius:50%;object-fit:cover;
  margin:0 auto 20px;display:block;border:4px solid #fff;
  box-shadow:0 10px 24px rgba(30,58,138,.18);
}
.owner-card{
  background:#fff;border:1px solid var(--gray);border-radius:24px;
  padding:40px;margin:0 auto 56px;max-width:820px;text-align:center;
  box-shadow:0 20px 50px rgba(30,58,138,.10);position:relative;overflow:hidden;
}
.owner-card::before{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 0%,rgba(232,90,124,.10),transparent 60%);pointer-events:none}
.owner-card .owner-photo{
  width:180px;height:180px;border-radius:50%;object-fit:cover;
  margin:0 auto 20px;display:block;border:5px solid #fff;
  box-shadow:0 14px 34px rgba(30,58,138,.22);position:relative;
}
.owner-card .owner-kana{color:var(--red);letter-spacing:.3em;font-size:.75rem;text-transform:uppercase;margin-bottom:8px;position:relative}
.owner-card h2{font-family:var(--font-display);font-size:2rem;margin:0 0 4px;position:relative}
.owner-card .owner-role{color:var(--muted);letter-spacing:.1em;text-transform:uppercase;font-size:.8rem;margin-bottom:16px;position:relative}
.owner-card p{color:var(--ink-soft);max-width:620px;margin:0 auto;position:relative}