/* ==========================================================================
   Okinawa Charter — shared styles
   Palette derives from bingata (紅型) textile dyes + Kerama-blue water depth.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400;12..96,700;12..96,800&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&family=Noto+Sans+TC:wght@400;500;700&display=swap');

:root{
  --ink:#0A1F2C;
  --indigo:#123A56;
  --kerama:#0FA3C0;
  --shallow:#7FD4DF;
  --vermilion:#E2472A;
  --sun:#F0B429;
  --paper:#F2F5F4;
  --line:#D5DEDB;
  --white:#fff;

  --display:'Bricolage Grotesque','Noto Sans TC',system-ui,sans-serif;
  --body:'Inter','Noto Sans TC',system-ui,-apple-system,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;

  --wrap:1120px;
  --r:4px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--body);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* --- utility type ------------------------------------------------------- */
.eyebrow{
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--kerama);margin:0 0 14px;
}
.eyebrow--dark{color:var(--indigo);opacity:.7}
h1,h2,h3{font-family:var(--display);font-weight:800;letter-spacing:-.02em;line-height:1.06;margin:0}
h1{font-size:clamp(38px,6.2vw,72px)}
h2{font-size:clamp(28px,3.6vw,42px)}
h3{font-size:19px;letter-spacing:-.01em;font-weight:700}
p{margin:0 0 1em}
.lede{font-size:clamp(16px,1.6vw,19px);max-width:56ch;color:#2C4658}

/* --- header ------------------------------------------------------------- */
.masthead{
  position:sticky;top:0;z-index:50;background:rgba(242,245,244,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.masthead .wrap{display:flex;align-items:center;gap:20px;height:62px}
.brand{
  font-family:var(--display);font-weight:800;font-size:17px;
  letter-spacing:-.01em;text-decoration:none;margin-right:auto;
}
.brand span{color:var(--vermilion)}
.navlink{
  font-size:14px;text-decoration:none;color:#2C4658;
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.navlink:hover{border-bottom-color:var(--kerama)}

/* --- buttons ------------------------------------------------------------ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--body);font-weight:600;font-size:15px;
  padding:13px 22px;border-radius:var(--r);border:1px solid transparent;
  text-decoration:none;cursor:pointer;transition:transform .12s ease,background .15s ease;
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--vermilion);color:#fff}
.btn--primary:hover{background:#C93B20}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn--ghost:hover{border-color:#fff}
.btn--dark{background:var(--indigo);color:#fff}
.btn--dark:hover{background:#0C2C43}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* --- hero: water-depth bands (signature) -------------------------------- */
.hero{position:relative;overflow:hidden;background:var(--indigo);color:#fff}
.hero__bands{position:absolute;inset:0;display:flex;flex-direction:column}
.hero__bands i{display:block;flex:1}
.hero__bands i:nth-child(1){background:#9CE0E6}
.hero__bands i:nth-child(2){background:#5FC8D8}
.hero__bands i:nth-child(3){background:#219FC2}
.hero__bands i:nth-child(4){background:#15688F}
.hero__bands i:nth-child(5){background:#123A56}
.hero__bands i:nth-child(6){background:#0A1F2C}
.hero__veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,31,44,.88) 0%,rgba(10,31,44,.62) 48%,rgba(10,31,44,.15) 100%)}
.hero__inner{position:relative;padding:96px 0 88px;max-width:760px}
.hero h1{color:#fff;text-wrap:balance}
.hero .lede{color:#CFE3EA;margin-top:22px}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}

/* depth scale marks along the right edge of the hero */
.depthscale{
  position:absolute;right:26px;top:0;bottom:0;display:none;
  flex-direction:column;justify-content:space-around;align-items:flex-end;
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;
  color:rgba(255,255,255,.55);text-align:right;padding:40px 0;
}
.depthscale b{display:block;font-weight:400}
@media(min-width:1000px){.depthscale{display:flex}}

/* --- sections ----------------------------------------------------------- */
.section{padding:84px 0}
.section--tight{padding:60px 0}
.section--white{background:var(--white)}
.section__head{max-width:620px;margin-bottom:44px}

.grid{display:grid;gap:20px}
@media(min-width:760px){
  .grid--3{grid-template-columns:repeat(3,1fr)}
  .grid--2{grid-template-columns:repeat(2,1fr)}
}

.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  padding:26px 24px 28px;
}
.card--plain{background:transparent;border:0;padding:0}
.card h3{margin-bottom:8px}
.card p{font-size:15px;color:#3A5566;margin:0}

/* numbered steps — used only because the content is a real sequence */
.step__n{
  font-family:var(--mono);font-size:12px;color:var(--vermilion);
  letter-spacing:.14em;display:block;margin-bottom:14px;
}
.step{border-top:2px solid var(--ink);padding-top:16px}

/* vehicle rows */
.spec{
  display:flex;justify-content:space-between;gap:16px;
  border-top:1px solid var(--line);padding:12px 0;font-size:14px;
}
.spec:last-child{border-bottom:1px solid var(--line)}
.spec dt{color:#5A7383;margin:0}
.spec dd{margin:0;font-family:var(--mono);font-size:13px}

/* region lists */
.region{border-top:2px solid var(--kerama);padding-top:18px}
.region ul{list-style:none;margin:12px 0 0;padding:0}
.region li{font-size:15px;padding:7px 0;border-bottom:1px solid var(--line);color:#3A5566}
.region li span{font-family:var(--mono);font-size:12px;color:#8AA1AD;margin-left:6px}

/* --- footer ------------------------------------------------------------- */
.foot{background:var(--ink);color:#B9CCD6;padding:56px 0 40px;font-size:14px}
.foot a{color:#fff;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.3)}
.foot__grid{display:grid;gap:32px}
@media(min-width:760px){.foot__grid{grid-template-columns:2fr 1fr 1fr}}
.foot h4{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:#6D8B9A;margin:0 0 12px;font-weight:400}

/* --- forms -------------------------------------------------------------- */
.field{margin-bottom:22px}
.field > label,.legend{
  display:block;font-weight:600;font-size:14px;margin-bottom:6px;
}
.req{color:var(--vermilion);margin-left:2px}
.hint{font-size:13px;color:#5A7383;margin:0 0 8px}
input[type=text],input[type=email],input[type=tel],input[type=date],input[type=number],select,textarea{
  width:100%;font-family:var(--body);font-size:16px;color:var(--ink);
  background:var(--white);border:1px solid #B9C7C4;border-radius:var(--r);
  padding:11px 13px;
}
textarea{min-height:110px;resize:vertical}
input:focus,select:focus,textarea:focus{
  outline:2px solid var(--kerama);outline-offset:1px;border-color:var(--kerama);
}
input[aria-invalid=true],textarea[aria-invalid=true],select[aria-invalid=true]{border-color:var(--vermilion)}
.err{display:block;color:var(--vermilion);font-size:13px;margin-top:5px;min-height:1px}

fieldset{border:0;padding:0;margin:0 0 22px}

/* route chooser */
.routes{display:grid;gap:10px}
@media(min-width:700px){.routes{grid-template-columns:repeat(3,1fr)}}
.route{position:relative}
.route input{position:absolute;opacity:0;width:1px;height:1px}
.route label{
  display:block;background:var(--white);border:1px solid #B9C7C4;border-radius:var(--r);
  padding:16px;cursor:pointer;height:100%;
}
.route input:checked + label{border-color:var(--indigo);box-shadow:inset 0 0 0 2px var(--indigo)}
.route input:focus-visible + label{outline:2px solid var(--kerama);outline-offset:2px}
.route .rt-code{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--kerama)}
.route .rt-name{display:block;font-weight:700;margin:4px 0 4px;font-size:16px}
.route .rt-days{font-size:13px;color:#5A7383}

.counts{display:grid;gap:14px}
@media(min-width:620px){.counts{grid-template-columns:repeat(3,1fr)}}

.checkline{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;font-size:14px}
.checkline input{margin-top:4px;width:17px;height:17px;flex:none;accent-color:var(--indigo)}

/* honeypot — hidden from humans, present for bots */
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}

/* language switch */
.langswitch{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:var(--white)}
.langswitch button{
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  border:0;background:transparent;padding:7px 14px;cursor:pointer;color:#5A7383;
}
.langswitch button[aria-pressed=true]{background:var(--indigo);color:#fff}

/* notice block (tour conditions) */
.notice{background:#FFF6E0;border:1px solid #EAD08A;border-radius:var(--r);padding:20px 22px;font-size:14px;line-height:1.75}
.notice ul{margin:0;padding-left:1.1em}
.notice li{margin-bottom:8px}
.notice li:last-child{margin-bottom:0}

/* --- boarding-pass live preview (signature of the booking page) --------- */
.pass{
  position:sticky;top:86px;background:var(--indigo);color:#fff;border-radius:var(--r);
  overflow:hidden;box-shadow:0 14px 40px -22px rgba(10,31,44,.7);
}
.pass__top{padding:22px 24px 18px;border-bottom:2px dashed rgba(255,255,255,.28);position:relative}
.pass__top::before,.pass__top::after{
  content:'';position:absolute;bottom:-11px;width:20px;height:20px;
  background:var(--paper);border-radius:50%;
}
.pass__top::before{left:-10px}
.pass__top::after{right:-10px}
.pass__label{font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:#7FD4DF}
.pass__route{font-family:var(--display);font-weight:800;font-size:26px;line-height:1.15;margin:6px 0 0}
.pass__rows{padding:18px 24px 24px;display:grid;gap:12px}
.pass__row{display:flex;justify-content:space-between;gap:14px;font-size:14px;align-items:baseline}
.pass__row dt{color:#8FB4C6;font-size:12px;font-family:var(--mono);letter-spacing:.08em;margin:0}
.pass__row dd{margin:0;text-align:right;font-weight:500;word-break:break-word}
.pass__row dd:empty::after{content:'—';color:#6D8B9A}

.formgrid{display:grid;gap:40px;align-items:start}
@media(min-width:960px){.formgrid{grid-template-columns:1fr 340px}}

.status{border-radius:var(--r);padding:16px 18px;font-size:15px;margin-bottom:20px}
.status--err{background:#FDEBE7;border:1px solid #F0B4A6;color:#8C2612}
.status--ok{background:#E6F6EF;border:1px solid #A7D8C3;color:#14543C}

.done{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:44px 36px;text-align:center}
.done .ref{font-family:var(--mono);font-size:22px;letter-spacing:.12em;color:var(--vermilion);display:block;margin:16px 0}

.legalnote{font-size:13px;color:#5A7383}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* --- itinerary panel (appears once a route is chosen) ------------------- */
.itin{
  background:var(--white);border:1px solid var(--line);border-left:3px solid var(--kerama);
  border-radius:var(--r);padding:22px 24px 24px;margin:0 0 26px;
}
.itin h3{margin:0 0 10px}
.itin__meet{font-size:14px;margin:0 0 18px;color:#3A5566}
.itin__meet strong{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:#8AA1AD;font-weight:400;margin-bottom:3px}
.itin__meet a{margin-left:8px;color:var(--kerama);font-size:13px}
.itin__meal{font-size:14px;color:#3A5566;margin:16px 0 0;padding-top:14px;border-top:1px solid var(--line)}
.itin__meal strong{font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:#8AA1AD;font-weight:400;margin-right:8px}

.timeline{list-style:none;margin:0;padding:0}
.timeline li{
  display:grid;grid-template-columns:62px 1fr;gap:14px;
  font-size:14.5px;color:#22404F;padding:0 0 14px;position:relative;
}
.timeline li:last-child{padding-bottom:0}
.timeline time{
  font-family:var(--mono);font-size:12px;color:var(--indigo);
  padding-top:3px;white-space:nowrap;
}
.timeline li span{
  border-left:1px solid var(--line);padding-left:16px;position:relative;
}
.timeline li span::before{
  content:'';position:absolute;left:-4px;top:7px;width:7px;height:7px;
  border-radius:50%;background:var(--kerama);
}
.timeline li:last-child span::before{background:var(--vermilion)}