/* =========================================================
   Deep Access — freediving school (Okinawa)
   Design: editorial / mincho headings / photo-first,
   light "bright ocean" palette (calm & mature).
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* base (light) */
  --paper:   #f5f8f9;   /* page background */
  --paper-2: #ffffff;   /* card / raised */
  --mist:    #eaf1f3;   /* soft section tint */

  /* ink (deep sea, for text on light) */
  --ink:     #10303a;   /* headings / deep teal-navy */
  --body:    #33474e;   /* body text */
  --muted:   #6b8188;   /* secondary text */
  --hair:    rgba(16,48,58,.12);  /* hairlines */

  /* accents */
  --sea:     #2f97b0;   /* Okinawa turquoise */
  --sea-deep:#1f6f86;   /* deeper sea */
  --surf:    #7fcbd8;   /* light surface glow */
  --sand:    #c3a575;   /* warm gold accent */

  /* type */
  --serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --latin: "Cormorant Garamond", serif;
  --sans:  "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;

  /* layout */
  --wrap: 1120px;
  --gutter: clamp(20px, 5vw, 64px);
  --nav-h: 68px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--body);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: .02em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 {
  font-family: var(--serif);
  color: var(--ink);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: .04em;
  margin: 0;
}
p { margin: 0 0 1.2em; }

/* ---------- utility ---------- */
.wrap { width: min(var(--wrap), 100%); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(72px, 12vw, 140px); }
.tint { background: var(--mist); }
.eyebrow {
  font-family: var(--latin);
  font-size: .95rem;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--sea-deep);
  margin: 0 0 1.1em;
  display: inline-block;
}
.section-title {
  font-size: clamp(1.7rem, 4.2vw, 2.7rem);
  margin-bottom: .7em;
}
.lead { font-size: clamp(1.02rem, 1.6vw, 1.18rem); color: var(--body); max-width: 62ch; }
.center { text-align: center; }
.center .lead, .center .eyebrow { margin-inline: auto; }

/* buttons */
.btn {
  --bg: var(--ink);
  --fg: #fff;
  display: inline-flex; align-items: center; gap: .6em;
  font-family: var(--sans);
  font-size: .92rem; letter-spacing: .14em;
  padding: .95em 1.9em;
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--bg);
  border-radius: 2px;
  transition: transform .3s ease, background .3s ease, color .3s ease, box-shadow .3s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(16,48,58,.18); }
.btn--sea { --bg: var(--sea); --fg: #fff; }
.btn--sea:hover { --bg: var(--sea-deep); }
.btn--line { --bg: #06C755; --fg: #fff; border-color:#06C755; }
.btn--ghost { --bg: transparent; --fg: var(--ink); border-color: var(--hair); }
.btn--ghost:hover { --fg:#fff; --bg: var(--ink); }

/* ---------- navigation ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(245,248,249,0);
  transition: background .4s ease, box-shadow .4s ease, border-color .4s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(245,248,249,.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hair);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.brand { font-family: var(--latin); font-size: 1.5rem; letter-spacing: .22em; color: var(--ink); text-transform: uppercase; }
.brand small { display:block; font-family: var(--sans); font-size:.58rem; letter-spacing:.4em; color: var(--sea-deep); margin-top:-2px; }
/* hero nav starts light (on dark image) then flips when scrolled */
.nav:not(.scrolled) .brand, .nav:not(.scrolled) .brand small,
.nav:not(.scrolled) .nav-links a { color: #fff; }
.nav:not(.scrolled) .brand small { color: var(--surf); }

.nav-links { display: flex; align-items: center; gap: clamp(18px, 3vw, 40px); }
.nav-links a { font-size: .86rem; letter-spacing: .12em; color: var(--body); transition: color .25s, opacity .25s; }
.nav-links a:hover { color: var(--sea); opacity: 1; }
.nav-links a.active { color: var(--sea); }
.nav-links .nav-cta { border: 1px solid currentColor; padding: .5em 1.1em; border-radius: 2px; }

.nav-toggle { display:none; background:none; border:0; cursor:pointer; width:34px; height:26px; position:relative; }
.nav-toggle span { position:absolute; left:0; right:0; height:2px; background: currentColor; transition: .3s; }
.nav:not(.scrolled) .nav-toggle { color:#fff; }
.nav.scrolled .nav-toggle { color: var(--ink); }
.nav-toggle span:nth-child(1){ top:4px; }
.nav-toggle span:nth-child(2){ top:12px; }
.nav-toggle span:nth-child(3){ top:20px; }

/* ---------- hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: flex-end;
  color: #fff; overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    linear-gradient(180deg, rgba(8,30,38,.30) 0%, rgba(8,30,38,.15) 40%, rgba(8,30,38,.72) 100%),
    radial-gradient(120% 90% at 70% 10%, #6fbfd4 0%, #2f8fae 34%, #16556c 68%, #0c3346 100%);
  background-size: cover; background-position: center;
  transform: scale(1.06);
  animation: heroZoom 12s ease forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero__inner { padding-bottom: clamp(64px, 12vh, 128px); padding-top: 120px; max-width: 900px; }
.hero__title {
  color:#fff; font-size: clamp(2.1rem, 6.4vw, 4.4rem); line-height: 1.35; letter-spacing: .05em;
  text-shadow: 0 2px 30px rgba(0,0,0,.35);
}
.hero__title .en { font-family: var(--latin); display:block; font-size:.42em; letter-spacing:.4em; color: var(--surf); margin-bottom:.7em; text-transform: uppercase; }
.hero__sub { color: rgba(255,255,255,.9); font-size: clamp(1rem, 1.8vw, 1.18rem); max-width: 40ch; margin-top: 1.4em; }
.hero__cta { display:flex; gap:14px; flex-wrap:wrap; margin-top: 2.2em; }
.hero__scroll {
  position:absolute; left:50%; bottom:22px; transform:translateX(-50%);
  font-family: var(--latin); font-size:.72rem; letter-spacing:.3em; color: rgba(255,255,255,.7);
  writing-mode: vertical-rl; text-orientation: mixed;
}
.hero__scroll::after { content:""; display:block; width:1px; height:44px; margin:10px auto 0; background: linear-gradient(rgba(255,255,255,.7), transparent); animation: scrollLine 2s ease-in-out infinite; }
@keyframes scrollLine { 0%,100%{opacity:.3; transform:scaleY(.6);} 50%{opacity:1; transform:scaleY(1);} }

/* ---------- statement ---------- */
.statement { text-align:center; }
.statement p {
  font-family: var(--serif); color: var(--ink);
  font-size: clamp(1.4rem, 3.4vw, 2.2rem); line-height: 2; letter-spacing: .08em;
  max-width: 22ch; margin-inline:auto;
}
.statement .en { font-family: var(--latin); color: var(--sea-deep); letter-spacing:.3em; font-size:1rem; text-transform:uppercase; display:block; margin-top:1.6em; }

/* ---------- feature rows (image + text) ---------- */
.row { display:grid; grid-template-columns: 1.05fr .95fr; gap: clamp(28px, 5vw, 72px); align-items:center; }
.row + .row { margin-top: clamp(48px, 8vw, 96px); }
.row--flip .row__media { order: 2; }
.row__body h3 { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom:.6em; }
.row__media { position: relative; }

/* ---------- media / placeholder photo ---------- */
.ph {
  position: relative; overflow: hidden; border-radius: 3px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.14), rgba(255,255,255,0) 60%),
    radial-gradient(140% 120% at 30% 20%, #7cc4d6 0%, #2f8fae 40%, #15596f 78%, #0e3648 100%);
  box-shadow: 0 24px 60px -30px rgba(16,48,58,.55);
  aspect-ratio: 4/3;
  display:flex; align-items:center; justify-content:center;
}
.ph::after {
  content: attr(data-label);
  font-family: var(--sans); font-size:.72rem; letter-spacing:.18em; color: rgba(255,255,255,.82);
  text-transform: uppercase; text-align:center; padding: .8em 1.2em;
  border: 1px solid rgba(255,255,255,.35); border-radius: 2px; backdrop-filter: blur(2px);
}
.ph--tall { aspect-ratio: 3/4; }
.ph--wide { aspect-ratio: 16/9; }
.ph--sq { aspect-ratio: 1/1; }
/* real image inside a media frame */
.ph.has-img { background: #0e3648; }
.ph.has-img::after { display: none; }
.ph > img { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }

/* full-bleed parallax interlude */
.interlude { position: relative; min-height: 60vh; background-size: cover; background-position: center 40%; }
.interlude::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(8,30,38,.20), rgba(8,30,38,.42)); }

/* small stacked thumbs */
.thumbs { display:grid; grid-template-columns: repeat(3,1fr); gap:12px; margin-top:14px; }

/* ---------- course cards ---------- */
.cards { display:grid; grid-template-columns: repeat(auto-fit, minmax(250px,1fr)); gap: clamp(18px, 3vw, 30px); }
.card {
  background: var(--paper-2); border: 1px solid var(--hair); border-radius: 4px;
  padding: clamp(26px, 3vw, 38px); display:flex; flex-direction:column;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 26px 50px -30px rgba(16,48,58,.4); border-color: transparent; }
.card__tag { font-family: var(--latin); letter-spacing:.28em; font-size:.8rem; color: var(--sea-deep); text-transform:uppercase; }
.card__name { font-size: 1.35rem; margin:.35em 0 .5em; }
.card__price { font-family: var(--serif); color: var(--ink); font-size: 1.5rem; }
.card__price span { font-size:.7rem; color: var(--muted); font-family: var(--sans); letter-spacing:.08em; margin-left:.4em; }
.card__desc { color: var(--body); font-size:.95rem; margin:.9em 0 1.4em; }
.card__meta { margin-top:auto; font-size:.8rem; color: var(--muted); border-top:1px solid var(--hair); padding-top:1em; }
.card--feature { background: linear-gradient(160deg, #123a46, #0e2f3a); color:#fff; border-color:transparent; }
.card--feature .card__name, .card--feature .card__price { color:#fff; }
.card--feature .card__tag { color: var(--surf); }
.card--feature .card__desc { color: rgba(255,255,255,.85); }
.card--feature .card__meta { color: rgba(255,255,255,.6); border-color: rgba(255,255,255,.2); }

/* ---------- info list / steps ---------- */
.steps { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: clamp(20px,3vw,34px); counter-reset: s; }
.step { position:relative; padding-top: 1.4em; border-top: 1px solid var(--hair); }
.step::before { counter-increment:s; content: "0" counter(s); font-family: var(--latin); font-size:2rem; color: var(--surf); display:block; margin-bottom:.3em; }
.step h4 { font-size:1.1rem; margin-bottom:.4em; }
.step p { font-size:.92rem; color: var(--muted); margin:0; }

/* ---------- area chips ---------- */
.areas { display:flex; flex-wrap:wrap; gap:12px; margin-top: 1.6em; }
.chip { border:1px solid var(--hair); border-radius: 999px; padding:.5em 1.3em; font-size:.86rem; color: var(--ink); background: var(--paper-2); }
.chip b { font-family: var(--serif); font-weight:500; }

/* ---------- quote / voice ---------- */
.quote { background: var(--paper-2); border:1px solid var(--hair); border-left: 3px solid var(--sea); border-radius: 4px; padding: clamp(24px,3vw,36px); }
.quote p { font-family: var(--serif); color: var(--ink); font-size:1.1rem; line-height:2; margin-bottom:.8em; }
.quote cite { font-style:normal; color: var(--muted); font-size:.85rem; letter-spacing:.06em; }

/* ---------- CTA band ---------- */
.cta-band { position:relative; overflow:hidden; color:#fff; text-align:center; }
.cta-band__bg { position:absolute; inset:0; z-index:-1;
  background:
    linear-gradient(180deg, rgba(8,30,38,.55), rgba(8,30,38,.7)),
    radial-gradient(120% 120% at 50% 0%, #4aa7c0 0%, #1f6f86 45%, #0c3346 100%); }
.cta-band h2 { color:#fff; font-size: clamp(1.6rem,4vw,2.6rem); }
.cta-band p { color: rgba(255,255,255,.85); max-width: 46ch; margin: 1em auto 1.8em; }
.cta-band .hero__cta { justify-content:center; }

/* ---------- contact methods ---------- */
.contact-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: clamp(18px,3vw,26px); }
.contact-card { background: var(--paper-2); border:1px solid var(--hair); border-radius:4px; padding: clamp(28px,3vw,40px); text-align:center; transition: transform .3s, box-shadow .3s; }
.contact-card:hover { transform: translateY(-4px); box-shadow: 0 24px 50px -30px rgba(16,48,58,.4); }
.contact-card .ic { width:46px; height:46px; margin:0 auto .8em; border-radius:12px; display:grid; place-items:center; color:#fff; font-weight:700; font-size:1.1rem; }
.contact-card h3 { font-size:1.2rem; margin-bottom:.3em; }
.contact-card p { font-size:.9rem; color: var(--muted); margin-bottom:1.2em; }

/* ---------- FAQ ---------- */
.faq { max-width: 780px; margin-inline:auto; }
.faq details { border-bottom:1px solid var(--hair); padding: 1.1em 0; }
.faq summary { cursor:pointer; list-style:none; font-family: var(--serif); color: var(--ink); font-size:1.08rem; display:flex; justify-content:space-between; gap:1em; }
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::after { content:"＋"; color: var(--sea); transition: transform .3s; }
.faq details[open] summary::after { content:"−"; }
.faq p { margin:.9em 0 0; color: var(--body); font-size:.95rem; }

/* ---------- footer ---------- */
.footer { background: #0d2b34; color: rgba(255,255,255,.75); padding-block: clamp(48px,7vw,80px) 32px; }
.footer .wrap { display:grid; grid-template-columns: 1.4fr 1fr 1fr; gap: clamp(28px,5vw,60px); }
.footer h4 { color:#fff; font-family: var(--latin); letter-spacing:.2em; font-size:.9rem; text-transform:uppercase; margin-bottom:1.1em; }
.footer a { color: rgba(255,255,255,.75); font-size:.9rem; line-height:2.1; }
.footer a:hover { color: var(--surf); }
.footer .brand { color:#fff; }
.footer .brand small { color: var(--surf); }
.footer .fnote { grid-column:1/-1; border-top:1px solid rgba(255,255,255,.12); margin-top: 1.4em; padding-top:1.6em; font-size:.78rem; color: rgba(255,255,255,.5); display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; }
.footer .col p { font-size:.9rem; }

/* ---------- reveal animation ---------- */
.reveal { opacity:0; transform: translateY(26px); transition: opacity .9s cubic-bezier(.16,.7,.3,1), transform .9s cubic-bezier(.16,.7,.3,1); }
.reveal.in { opacity:1; transform:none; }
.reveal.d1{ transition-delay:.08s;} .reveal.d2{ transition-delay:.16s;} .reveal.d3{ transition-delay:.24s;} .reveal.d4{ transition-delay:.32s;}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1; transform:none;} .hero__bg{animation:none; transform:none;}
}

/* ---------- page hero (sub pages) ---------- */
.phero { position:relative; min-height: 56svh; display:flex; align-items:flex-end; color:#fff; overflow:hidden; }
.phero__bg { position:absolute; inset:0; z-index:-1;
  background: linear-gradient(180deg, rgba(8,30,38,.25), rgba(8,30,38,.65)),
              radial-gradient(120% 120% at 70% 10%, #6fbfd4 0%, #2f8fae 38%, #12506a 74%, #0c3346 100%); }
.phero__inner { padding: 150px 0 clamp(48px,8vh,84px); }
.phero__title { color:#fff; font-size: clamp(2rem,5.5vw,3.4rem); }
.phero__title .en { display:block; font-family: var(--latin); font-size:.32em; letter-spacing:.4em; color: var(--surf); text-transform:uppercase; margin-bottom:.9em; }
.crumb { font-family: var(--latin); letter-spacing:.2em; font-size:.78rem; color: rgba(255,255,255,.7); margin-bottom:1.2em; }

/* ---------- responsive ---------- */
@media (max-width: 860px){
  .row, .row--flip .row__media { grid-template-columns: 1fr; order: 0; }
  .footer .wrap { grid-template-columns: 1fr 1fr; }
  .nav-links {
    position: fixed; inset: var(--nav-h) 0 auto 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: rgba(245,248,249,.98); backdrop-filter: blur(12px);
    border-bottom:1px solid var(--hair);
    padding: 10px var(--gutter) 22px;
    transform: translateY(-140%); transition: transform .4s ease; box-shadow: 0 20px 40px -20px rgba(16,48,58,.4);
  }
  .nav-links.open { transform: none; }
  .nav-links a { color: var(--ink) !important; width:100%; padding: .9em 0; border-bottom:1px solid var(--hair); }
  .nav:not(.scrolled) .nav-links a { color: var(--ink) !important; }
  .nav-links .nav-cta { border:0; padding: .9em 0; color: var(--sea) !important; }
  .nav-toggle { display:block; }
}
@media (max-width: 560px){
  .footer .wrap { grid-template-columns: 1fr; }
  .thumbs { grid-template-columns: repeat(3,1fr); }
}