/* ============================================================================
   PTSC Visitor Kiosk — "Offshore, at night"
   A maritime-tech identity built from the real PTSC marque: the twin GREEN
   flame (#009048) over deep-sea indigo (#303078). Dark, cinematic, engineered.
   Display: Fraunces (optical serif). UI/body: Be Vietnam Pro (Vietnamese-native).
   ========================================================================== */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  /* sea */
  --abyss:#050a1c;
  --deep:#091027;
  --sea:#0e1740;
  --sea-2:#131f52;
  /* brand */
  --indigo:#303078;
  --indigo-lift:#3f43a6;
  --flame:#009048;
  --flame-bright:#16c76c;
  --flame-glow:rgba(22,199,108,.50);
  /* metal + paper */
  --brass:#c9a86a;
  --brass-bright:#ecd39a;
  --paper:#f4f1e8;
  /* ink */
  --mist:#eef2ff;
  --haze:#94a0cf;
  --haze-dim:#6b76a4;
  --line:rgba(150,170,235,.14);
  --line-strong:rgba(160,180,240,.26);
  --card:rgba(16,25,63,.55);
  --card-lift:rgba(23,34,82,.66);

  --display:'Fraunces',Georgia,'Times New Roman',serif;
  --ui:'Be Vietnam Pro',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;

  --r-lg:26px; --r-md:18px; --r-sm:12px;
  --pad:clamp(20px,3.5vw,54px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

html,body{height:100%}
body{
  font-family:var(--ui);
  color:var(--mist);
  background:var(--abyss);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
  min-height:100dvh;
  position:relative;
}

/* ---- atmosphere (persistent, behind everything) ------------------------- */
.atmos{position:fixed;inset:0;z-index:-2;overflow:hidden;
  background:
    radial-gradient(120% 90% at 50% 118%, rgba(0,144,72,.22), transparent 60%),
    radial-gradient(90% 70% at 82% -10%, rgba(48,48,120,.5), transparent 55%),
    linear-gradient(180deg,#070d22 0%, var(--deep) 42%, var(--abyss) 100%);
}
.aurora{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;mix-blend-mode:screen}
.a1{width:60vw;height:60vw;left:-14vw;top:32vh;
  background:radial-gradient(circle,var(--flame) 0%,rgba(0,144,72,0) 68%);
  animation:drift1 26s var(--ease) infinite alternate}
.a2{width:52vw;height:52vw;right:-10vw;top:-14vh;
  background:radial-gradient(circle,var(--indigo-lift) 0%,rgba(63,67,166,0) 66%);
  animation:drift2 32s var(--ease) infinite alternate}
@keyframes drift1{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(6vw,-6vh,0) scale(1.14)}}
@keyframes drift2{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(-7vw,7vh,0) scale(1.1)}}

/* horizon + seabed waves */
.horizon{position:absolute;left:0;right:0;top:52%;height:1px;
  background:linear-gradient(90deg,transparent,var(--brass) 22%,var(--brass-bright) 50%,var(--brass) 78%,transparent);
  opacity:.28}
.seabed{position:absolute;left:-4%;right:-4%;bottom:-2%;height:34vh;opacity:.5;
  color:var(--indigo);}
.seabed svg{width:108%;height:100%}

/* fine grain */
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}

/* ---- shell -------------------------------------------------------------- */
.shell{position:relative;min-height:100dvh;display:flex;flex-direction:column;
  max-width:1480px;margin:0 auto;padding:0 var(--pad)}

.brandbar{display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 2px 22px;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:16px}
.emblem{height:54px;width:auto;flex:none;object-fit:contain;
  filter:drop-shadow(0 0 16px var(--flame-glow));animation:flicker 5.5s ease-in-out infinite}
@keyframes flicker{0%,100%{opacity:.96}45%{opacity:.82}70%{opacity:1}}
.brand-name{font-family:var(--display);font-weight:700;font-size:30px;letter-spacing:.04em;line-height:1;color:var(--mist)}
.brand-sub{font-size:12px;letter-spacing:.05em;color:var(--haze);margin-top:6px}
.brand-sub span{color:var(--flame-bright);font-weight:600}
.meta{text-align:right;display:flex;flex-direction:column;gap:4px}
.meta .t{font-family:var(--display);font-size:26px;font-weight:500;letter-spacing:.5px;
  font-variant-numeric:tabular-nums;color:var(--mist)}
.meta .d{font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--haze)}

.stage{flex:1;display:flex;flex-direction:column;justify-content:center;
  padding:clamp(18px,3vw,40px) 0}

.footline{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 2px 26px;border-top:1px solid var(--line);
  font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--haze-dim)}
.footline .dot{width:6px;height:6px;border-radius:50%;background:var(--flame-bright);
  box-shadow:0 0 10px var(--flame-glow);display:inline-block;margin-right:8px;vertical-align:middle;
  animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---- type helpers ------------------------------------------------------- */
.eyebrow{font-size:12px;letter-spacing:.34em;text-transform:uppercase;color:var(--brass-bright);
  font-weight:600;display:flex;align-items:center;gap:12px}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--brass);opacity:.7}
/* two-line step marker: "Bước x / 3" over its label */
.steps{display:flex;flex-direction:column;gap:8px}
.steps.center{align-items:center;text-align:center}
.steps .eyebrow::before{display:none}
.steps-label{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--haze);font-weight:500}
.display{font-family:var(--display);font-weight:600;line-height:1.02;letter-spacing:-.5px;
  text-wrap:balance;color:var(--mist)}
.lede{color:var(--haze);font-size:clamp(15px,1.4vw,18px);line-height:1.6;max-width:46ch}

/* ---- buttons ------------------------------------------------------------ */
.btn{--bg:var(--flame);font-family:var(--ui);font-weight:600;font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;gap:12px;
  padding:18px 30px;border:0;border-radius:var(--r-md);cursor:pointer;color:#02160c;
  background:linear-gradient(135deg,var(--flame-bright),var(--flame));
  box-shadow:0 12px 30px -10px var(--flame-glow),inset 0 1px 0 rgba(255,255,255,.28);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);text-decoration:none}
.btn:hover{transform:translateY(-3px);box-shadow:0 20px 44px -12px var(--flame-glow),inset 0 1px 0 rgba(255,255,255,.34)}
.btn:active{transform:translateY(-1px)}
.btn .arw{font-size:20px;transition:transform .3s var(--ease)}
.btn:hover .arw{transform:translateX(5px)}
.btn.ghost{background:transparent;color:var(--mist);border:1px solid var(--line-strong);box-shadow:none}
.btn.ghost:hover{border-color:var(--brass);color:var(--brass-bright);transform:translateY(-2px)}
.btn.brass{background:linear-gradient(135deg,var(--brass-bright),var(--brass));color:#241a06;
  box-shadow:0 12px 30px -12px rgba(201,168,106,.6),inset 0 1px 0 rgba(255,255,255,.4)}
.btn.wide{width:100%}
.btn:focus-visible{outline:2px solid var(--brass-bright);outline-offset:3px}

.back{background:none;border:0;color:var(--haze);font-family:var(--ui);font-size:14px;
  cursor:pointer;display:inline-flex;align-items:center;gap:8px;padding:8px 0;transition:color .25s}
.back:hover{color:var(--brass-bright)}

/* ---- LANDING ------------------------------------------------------------ */
.landing{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,4vw,64px);align-items:center}
.land-copy{display:flex;flex-direction:column;gap:26px}
.land-copy .display{font-size:clamp(40px,6.2vw,78px)}
.land-copy .display i{font-style:italic;color:var(--flame-bright);font-weight:500;margin-right:.16em}
.land-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:6px}
.trust{display:flex;gap:26px;margin-top:10px;flex-wrap:wrap}
.trust .n{font-family:var(--display);font-size:26px;font-weight:600;color:var(--mist);
  font-variant-numeric:tabular-nums;line-height:1}
.trust .l{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--haze);margin-top:6px}

/* QR-to-phone invite card (boarding-pass styled) */
.invite{position:relative;background:linear-gradient(160deg,var(--card-lift),var(--card));
  border:1px solid var(--line-strong);border-radius:var(--r-lg);padding:30px;
  backdrop-filter:blur(10px);box-shadow:0 40px 80px -40px rgba(0,0,0,.75),inset 0 1px 0 rgba(255,255,255,.06)}
.invite::before{content:"";position:absolute;inset:0;border-radius:var(--r-lg);padding:1px;
  background:linear-gradient(160deg,rgba(201,168,106,.5),transparent 40%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.invite h3{font-family:var(--display);font-weight:600;font-size:21px;margin-bottom:4px}
.invite p{color:var(--haze);font-size:13.5px;line-height:1.55;margin-bottom:22px}
.qrframe{position:relative;background:var(--paper);border-radius:14px;padding:9px;
  width:280px;margin:0 auto;box-shadow:0 18px 40px -18px rgba(0,0,0,.8)}
.qrframe img{display:block;width:100%;height:auto;border-radius:4px}
.qrframe .corner{position:absolute;width:16px;height:16px;border:2px solid var(--flame)}
.qrframe .c1{top:4px;left:4px;border-right:0;border-bottom:0}
.qrframe .c2{top:4px;right:4px;border-left:0;border-bottom:0}
.qrframe .c3{bottom:4px;left:4px;border-right:0;border-top:0}
.qrframe .c4{bottom:4px;right:4px;border-left:0;border-top:0}
.invite .scanhint{display:flex;align-items:center;gap:10px;justify-content:center;
  margin-top:20px;font-size:12.5px;color:var(--haze);letter-spacing:.02em}
.invite .scanhint svg{width:18px;height:18px;color:var(--flame-bright)}

/* ---- CHOOSE ------------------------------------------------------------- */
.choose{display:flex;flex-direction:column;gap:30px;align-items:flex-start}
.choose .head{display:flex;flex-direction:column;gap:14px}
.choose .head .display{font-size:clamp(30px,4.4vw,52px)}
.choices{display:grid;grid-template-columns:1fr 1fr;gap:22px;width:100%}
.choice{position:relative;text-align:left;cursor:pointer;color:inherit;text-decoration:none;
  background:linear-gradient(160deg,var(--card-lift),var(--card));border:1px solid var(--line-strong);
  border-radius:var(--r-lg);padding:34px;display:flex;flex-direction:column;gap:16px;min-height:238px;
  transition:transform .35s var(--ease),border-color .35s var(--ease),box-shadow .35s var(--ease);
  overflow:hidden}
.choice::after{content:"";position:absolute;right:-40px;bottom:-40px;width:160px;height:160px;border-radius:50%;
  background:radial-gradient(circle,var(--glow,var(--flame-glow)),transparent 70%);opacity:.28;transition:opacity .35s}
.choice:hover{transform:translateY(-6px);border-color:var(--brass);
  box-shadow:0 40px 70px -36px rgba(0,0,0,.7)}
.choice:hover::after{opacity:.5}
.choice .ico{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;
  background:rgba(22,199,108,.12);border:1px solid var(--line-strong);color:var(--flame-bright)}
.choice.delivery .ico{background:rgba(201,168,106,.12);color:var(--brass-bright)}
.choice .ico svg{width:30px;height:30px}
.choice h3{font-family:var(--display);font-weight:600;font-size:26px}
.choice p{color:var(--haze);font-size:14px;line-height:1.55}
.choice .go{margin-top:auto;color:var(--brass-bright);font-size:13px;letter-spacing:.14em;
  text-transform:uppercase;font-weight:600;display:inline-flex;gap:8px;align-items:center}

/* ---- FORMS -------------------------------------------------------------- */
.formwrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,4vw,60px);align-items:start}
.form-side{display:flex;flex-direction:column;gap:18px;position:sticky;top:20px}
.form-side .display{font-size:clamp(28px,3.6vw,44px)}
.form-side .kv{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.form-side .kv div{display:flex;gap:12px;align-items:flex-start;color:var(--haze);font-size:13.5px;line-height:1.5}
.form-side .kv b{color:var(--flame-bright);font-weight:700}
form.reg{display:flex;flex-direction:column;gap:6px;
  background:linear-gradient(160deg,var(--card-lift),var(--card));border:1px solid var(--line-strong);
  border-radius:var(--r-lg);padding:clamp(22px,2.6vw,34px);
  box-shadow:0 40px 80px -44px rgba(0,0,0,.7)}
.field{position:relative;margin-top:20px}
.field input,.field textarea{width:100%;font-family:var(--ui);font-size:16px;color:var(--mist);
  background:rgba(5,10,28,.5);border:1px solid var(--line-strong);border-radius:var(--r-sm);
  padding:22px 16px 10px;transition:border-color .25s,box-shadow .25s}
.field textarea{min-height:84px;resize:vertical;padding-top:26px}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--flame-bright);
  box-shadow:0 0 0 3px rgba(22,199,108,.16)}
.field label{position:absolute;left:16px;top:16px;color:var(--haze-dim);font-size:15px;
  pointer-events:none;transition:.2s var(--ease);transform-origin:left}
.field input:focus+label,.field input:not(:placeholder-shown)+label,
.field textarea:focus+label,.field textarea:not(:placeholder-shown)+label{
  top:8px;font-size:11px;letter-spacing:.08em;color:var(--brass-bright);transform:translateY(0)}
.field .req{color:var(--flame-bright)}
.form-actions{display:flex;gap:14px;margin-top:26px;align-items:center}
.form-error{margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);font-size:13.5px;
  color:#ffb4a2;background:rgba(255,120,90,.08);border:1px solid rgba(255,120,90,.3)}
.form-note{font-size:12px;color:var(--haze-dim);margin-top:14px;line-height:1.5;
  display:flex;gap:8px;align-items:flex-start}
.form-note svg{width:15px;height:15px;flex:none;margin-top:1px;color:var(--haze)}

/* ---- PASS (boarding pass) ---------------------------------------------- */
.passwrap{display:flex;flex-direction:column;align-items:center;gap:26px;animation:passin .7s var(--ease) both}
@keyframes passin{from{opacity:0;transform:translateY(24px) scale(.97)}to{opacity:1;transform:none}}
.pass{position:relative;width:min(560px,94vw);
  background:linear-gradient(158deg,#182357,#0d1636);
  border:1px solid var(--line-strong);border-radius:24px;overflow:hidden;
  box-shadow:0 60px 110px -50px rgba(0,0,0,.85),inset 0 1px 0 rgba(255,255,255,.07)}
.pass-top{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;
  padding:26px 30px 22px;background:
    radial-gradient(120% 140% at 100% 0%, rgba(22,199,108,.16), transparent 55%);
  border-bottom:1px dashed var(--line-strong)}
.pass-kind{font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--brass-bright);font-weight:700}
.pass-name{font-family:var(--display);font-weight:600;font-size:30px;margin-top:8px;line-height:1.05}
.pass-host{color:var(--haze);font-size:13.5px;margin-top:8px}
.pass-host b{color:var(--mist);font-weight:600}
.stamp{flex:none;transform:rotate(7deg);border:2px solid var(--flame-bright);border-radius:10px;
  color:var(--flame-bright);padding:8px 12px;text-align:center;
  box-shadow:0 0 22px -6px var(--flame-glow);animation:stampin .6s .25s var(--ease) both}
@keyframes stampin{from{opacity:0;transform:rotate(-6deg) scale(1.5)}to{opacity:1;transform:rotate(7deg) scale(1)}}
.stamp .s1{font-size:9px;letter-spacing:.22em;text-transform:uppercase;font-weight:700}
.stamp .s2{font-family:var(--display);font-weight:700;font-size:15px;letter-spacing:.06em}
.pass-body{display:grid;grid-template-columns:auto 1fr;gap:26px;padding:26px 30px 30px;align-items:center;
  position:relative}
/* perforation notches */
.pass-body::before,.pass-body::after{content:"";position:absolute;top:-14px;width:28px;height:28px;
  border-radius:50%;background:var(--abyss)}
.pass-body::before{left:-14px}.pass-body::after{right:-14px}
.pass-qr{background:var(--paper);border-radius:12px;padding:8px;width:194px;height:194px;
  box-shadow:0 14px 32px -16px rgba(0,0,0,.8)}
.pass-qr img{width:100%;height:100%;display:block;border-radius:4px}
.pass-info{display:flex;flex-direction:column;gap:14px}
.pass-row{display:flex;flex-direction:column;gap:3px}
.pass-row .k{font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--haze-dim)}
.pass-row .v{font-size:15px;color:var(--mist);font-weight:500}
.pass-row .v.mono{font-family:var(--display);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.zones{display:flex;flex-wrap:wrap;gap:7px}
.zone{font-size:11.5px;padding:5px 11px;border-radius:20px;color:var(--mist);
  background:rgba(22,199,108,.1);border:1px solid rgba(22,199,108,.28)}
.pass-strip{display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 30px;background:rgba(5,10,28,.5);border-top:1px solid var(--line)}
.single-use{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--brass-bright);font-weight:600}
.single-use svg{width:16px;height:16px}
.pass-token{font-family:var(--display);font-size:13px;letter-spacing:.14em;color:var(--haze);
  font-variant-numeric:tabular-nums}

.pass-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;align-items:stretch}

/* tablet: carry-away options + auto-return to home */
.carry{display:flex;flex-direction:column;align-items:center;gap:18px;width:min(600px,94vw)}
.carry-hint{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--haze)}
.carry-photo{display:flex;align-items:center;gap:13px;padding:14px 20px;border-radius:var(--r-md);
  border:1px dashed var(--line-strong);background:rgba(5,10,28,.4);text-align:left;max-width:320px}
.carry-photo svg{width:26px;height:26px;color:var(--flame-bright);flex:none}
.carry-photo b{display:block;font-size:14px;color:var(--mist);font-weight:600}
.carry-photo span{display:block;font-size:12px;color:var(--haze);line-height:1.4;margin-top:2px}
.autoreturn{font-size:12.5px;color:var(--haze-dim);letter-spacing:.03em}
.autoreturn b{color:var(--brass-bright);font-variant-numeric:tabular-nums;font-weight:700}

/* live status pill (phone) */
.keepopen{width:min(560px,94vw);display:flex;align-items:center;gap:14px;
  background:rgba(201,168,106,.09);border:1px solid rgba(201,168,106,.3);
  border-radius:var(--r-md);padding:16px 20px;color:var(--brass-bright);font-size:14px;line-height:1.5}
.keepopen svg{width:22px;height:22px;flex:none}
.status-pill{display:inline-flex;align-items:center;gap:10px;padding:12px 20px;border-radius:30px;
  font-size:14px;font-weight:600;letter-spacing:.02em;transition:.4s var(--ease)}
.status-pill .led{width:9px;height:9px;border-radius:50%}
.status-pending{background:rgba(148,160,207,.1);border:1px solid var(--line-strong);color:var(--haze)}
.status-pending .led{background:var(--haze);animation:pulse 1.6s ease-in-out infinite}
.status-in{background:rgba(22,199,108,.14);border:1px solid rgba(22,199,108,.4);color:var(--flame-bright)}
.status-in .led{background:var(--flame-bright);box-shadow:0 0 12px var(--flame-glow)}

/* error */
.errbox{width:min(520px,94vw);margin:0 auto;text-align:center;display:flex;flex-direction:column;gap:20px;
  background:var(--card);border:1px solid var(--line-strong);border-radius:var(--r-lg);padding:40px}

/* ---- reveal ------------------------------------------------------------- */
.reveal{opacity:0;animation:rise .8s var(--ease) forwards;animation-delay:var(--d,0s)}
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}

/* view-transition for htmx swaps */
@media (prefers-reduced-motion:no-preference){
  ::view-transition-old(stage){animation:vtout .3s var(--ease) both}
  ::view-transition-new(stage){animation:vtin .45s var(--ease) both}
}
@keyframes vtout{to{opacity:0;transform:translateY(-14px)}}
@keyframes vtin{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

/* ---- responsive: PHONE -------------------------------------------------- */
@media (max-width:820px){
  .shell{padding:0 20px}
  .brandbar{padding:18px 0 14px}
  .meta{display:none}
  .landing{grid-template-columns:1fr;gap:30px}
  .invite{order:-1}
  .land-copy .display{font-size:clamp(34px,10vw,52px)}
  .formwrap{grid-template-columns:1fr;gap:24px}
  .form-side{position:static}
  .choices{grid-template-columns:1fr}
  .pass-body{grid-template-columns:1fr;justify-items:center;text-align:center}
  .pass-info{align-items:center}
  .zones{justify-content:center}
  .trust{gap:20px}
}
@media (max-width:820px) and (orientation:portrait){
  .stage{justify-content:flex-start;padding-top:8px}
}

/* ---- print (thermal pass) ---------------------------------------------- */
@media print{
  body{background:#fff;color:#000}
  .atmos,body::after,.brandbar,.footline,.pass-cta,.keepopen,.back,.form-actions{display:none!important}
  .shell{padding:0}
  .stage{padding:0}
  .pass{box-shadow:none;border:1px solid #000;background:#fff;color:#000;width:74mm}
  .pass-top{background:none;border-bottom:1px dashed #000}
  .pass-name,.pass-kind{color:#000}
  .pass-body::before,.pass-body::after{background:#fff}
  .pass-qr{box-shadow:none}
  .zone{color:#000;border-color:#000;background:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .aurora{animation:none}
}