:root{
  --pool-deep:#073B46; --pool:#0E6E80; --water:#1FA9BE;
  --buoy:#FF5A3C; --buoy-deep:#E8431F;
  --tile:#EEF4F4; --surface:#FFFFFF;
  --ink:#0B2227; --muted:#5E767C; --line:#DCE7E8;
  --present:#15A34A; --absent:#E04848; --late:#E59500;
  --r:14px; --r-sm:10px; --shadow:0 1px 3px rgba(7,59,70,.08),0 6px 18px rgba(7,59,70,.06);
  --tap:52px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:Inter,system-ui,sans-serif;background:var(--tile);color:var(--ink);
  -webkit-font-smoothing:antialiased;font-size:16px;line-height:1.45;
  overscroll-behavior-y:none;
}
h1,h2,h3,.num,.brand,.badge,.tab b{font-family:"Space Grotesk",Inter,sans-serif}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:16px}
a{color:var(--pool);text-decoration:none}

/* ---------- App frame ---------- */
#app{max-width:560px;margin:0 auto;min-height:100%;padding-bottom:84px;position:relative}
.appbar{
  position:sticky;top:0;z-index:20;background:var(--pool-deep);color:#fff;
  padding:14px 18px;display:flex;align-items:center;gap:12px;
  box-shadow:0 2px 10px rgba(7,59,70,.18)
}
.appbar .brand{font-size:19px;font-weight:600;letter-spacing:-.3px;display:flex;align-items:center;gap:9px}
.appbar .brand .mark{width:22px;height:22px;flex:none}
.appbar .sub{margin-left:auto;font-size:12.5px;opacity:.78;font-weight:500;text-align:right;line-height:1.2}
.appbar .ghost{margin-left:auto;color:#fff;opacity:.85;font-size:14px;padding:8px;font-weight:600}

.view{padding:18px 16px 8px}
.eyebrow{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:10px}
.h-lg{font-size:25px;font-weight:600;letter-spacing:-.5px;line-height:1.15}

/* ---------- Cards ---------- */
.card{background:var(--surface);border-radius:var(--r);box-shadow:var(--shadow);padding:16px;margin-bottom:14px}
.card.tap{display:block;width:100%;text-align:left}
.card.tap:active{transform:scale(.99)}
.row{display:flex;align-items:center;gap:12px}
.spread{justify-content:space-between}
.muted{color:var(--muted)}
.small{font-size:13px}
.tiny{font-size:11.5px}

/* ---------- Stat strip ---------- */
.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}
.stat{background:var(--surface);border-radius:var(--r);box-shadow:var(--shadow);padding:14px 16px}
.stat .num{font-size:30px;font-weight:600;letter-spacing:-1px;line-height:1}
.stat .lbl{font-size:12.5px;color:var(--muted);margin-top:4px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:var(--tap);padding:0 20px;border-radius:var(--r);font-weight:600;font-size:15.5px;
  background:var(--pool);color:#fff;width:100%
}
.btn:active{filter:brightness(.95)}
.btn.coral{background:var(--buoy)}
.btn.ghost{background:transparent;color:var(--pool);box-shadow:inset 0 0 0 1.5px var(--line)}
.btn.sm{min-height:42px;padding:0 14px;font-size:14px;width:auto}

/* ---------- Swimmer rows ---------- */
.swimmer{display:flex;align-items:center;gap:13px;padding:13px 14px}
.avatar{width:44px;height:44px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--water),var(--pool));color:#fff;font-weight:600;font-size:17px;
  font-family:"Space Grotesk"}
.swimmer .nm{font-weight:600;font-size:15.5px}
.badge{font-size:11.5px;font-weight:600;padding:3px 9px;border-radius:20px;
  background:rgba(31,169,190,.12);color:var(--pool);white-space:nowrap}
.badge.l0{background:rgba(94,118,124,.14);color:var(--muted)}
.badge.l1{background:rgba(31,169,190,.13);color:#0E6E80}
.badge.l2{background:rgba(21,163,74,.13);color:#15803d}
.badge.l3{background:rgba(229,149,0,.15);color:#b45309}
.badge.l4{background:rgba(255,90,60,.14);color:var(--buoy-deep)}
.chev{margin-left:auto;color:var(--line);font-size:22px}

/* ---------- Swim-lane progress (signature) ---------- */
.lane{position:relative;height:30px;border-radius:8px;margin:14px 0 6px;
  background:linear-gradient(180deg,#0E6E80,#0a5765);overflow:hidden}
.lane::before{content:"";position:absolute;left:0;right:0;top:50%;height:0;
  border-top:3px dashed rgba(255,255,255,.42);transform:translateY(-50%)}
.lane .fill{position:absolute;left:0;top:0;bottom:0;background:rgba(31,169,190,.35);
  border-right:2px solid rgba(255,255,255,.5);transition:width .4s ease}
.lane .swim{position:absolute;top:50%;transform:translate(-50%,-50%);width:20px;height:20px;
  border-radius:50%;background:var(--buoy);box-shadow:0 0 0 3px rgba(255,90,60,.3);transition:left .4s ease}
.lane-meta{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted)}

/* ---------- Milestone checklist ---------- */
.skill{display:flex;align-items:center;gap:12px;padding:13px 4px;border-bottom:1px solid var(--line)}
.skill:last-child{border-bottom:none}
.check{width:26px;height:26px;border-radius:7px;flex:none;box-shadow:inset 0 0 0 2px var(--line);
  display:grid;place-items:center;transition:.15s}
.skill.done .check{background:var(--present);box-shadow:none}
.skill.done .check svg{display:block}
.check svg{display:none;width:15px;height:15px}
.skill .sname{font-size:15px}
.skill.done .sname{color:var(--muted);text-decoration:line-through}

/* ---------- Attendance pills ---------- */
.att{display:flex;gap:7px;margin-left:auto}
.pill{min-width:42px;height:38px;border-radius:9px;font-size:12.5px;font-weight:600;
  box-shadow:inset 0 0 0 1.5px var(--line);color:var(--muted);padding:0 10px}
.pill.on.present{background:var(--present);color:#fff;box-shadow:none}
.pill.on.absent{background:var(--absent);color:#fff;box-shadow:none}
.pill.on.late{background:var(--late);color:#fff;box-shadow:none}

/* ---------- Forms ---------- */
.field{margin-bottom:13px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 14px;border-radius:var(--r-sm);background:#fff;
  box-shadow:inset 0 0 0 1.5px var(--line);outline:none;color:var(--ink)
}
.field input:focus,.field select:focus,.field textarea:focus{box-shadow:inset 0 0 0 2px var(--water)}
.field textarea{min-height:84px;resize:vertical}

/* ---------- Note flow ---------- */
.ainote{background:linear-gradient(160deg,#f0fbfc,#eef6f7);border-radius:var(--r);
  padding:15px;box-shadow:inset 0 0 0 1.5px rgba(31,169,190,.25);margin:12px 0;
  font-size:15px;line-height:1.55;white-space:pre-wrap;min-height:60px}
.langrow{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.lang{padding:9px 14px;border-radius:20px;font-size:13.5px;font-weight:600;color:var(--muted);
  box-shadow:inset 0 0 0 1.5px var(--line)}
.lang.on{background:var(--pool);color:#fff;box-shadow:none}
.toggle{display:flex;align-items:center;gap:10px;margin:12px 0}
.toggle .sw{width:46px;height:27px;border-radius:20px;background:var(--line);position:relative;transition:.18s;flex:none}
.toggle .sw::after{content:"";position:absolute;top:3px;left:3px;width:21px;height:21px;border-radius:50%;background:#fff;transition:.18s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.toggle.on .sw{background:var(--water)}
.toggle.on .sw::after{left:22px}

/* ---------- Bottom nav ---------- */
.nav{position:fixed;left:0;right:0;bottom:0;z-index:30;background:#fff;
  border-top:1px solid var(--line);display:flex;max-width:560px;margin:0 auto;
  padding-bottom:env(safe-area-inset-bottom)}
.tab{flex:1;padding:11px 0 13px;display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--muted)}
.tab svg{width:23px;height:23px}
.tab b{font-size:11px;font-weight:600}
.tab.on{color:var(--pool)}

/* ---------- Misc ---------- */
.empty{text-align:center;padding:40px 20px;color:var(--muted)}
.empty .big{font-size:40px;margin-bottom:8px}
.fab{position:fixed;right:18px;bottom:96px;z-index:25;width:58px;height:58px;border-radius:18px;
  background:var(--buoy);color:#fff;display:grid;place-items:center;box-shadow:0 8px 22px rgba(255,90,60,.4);max-width:560px}
.fab svg{width:26px;height:26px}
.section-title{font-size:13px;font-weight:600;color:var(--muted);margin:18px 2px 8px}
.note-item{padding:13px 14px}
.note-item .ai{font-size:14.5px;line-height:1.5;white-space:pre-wrap}
.note-item .meta{font-size:11.5px;color:var(--muted);margin-top:7px;display:flex;gap:8px;align-items:center}
.dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.backbtn{color:#fff;font-size:15px;font-weight:600;display:flex;align-items:center;gap:6px}
.center{display:grid;place-items:center;min-height:70vh;padding:24px}
.auth{width:100%;max-width:400px}
.auth .logo{text-align:center;margin-bottom:22px}
.auth .logo .mark{width:54px;height:54px;margin:0 auto 12px}
.auth .logo h1{font-size:27px;letter-spacing:-.5px}
.auth .logo p{color:var(--muted);font-size:14.5px;margin-top:4px}
.linkbtn{display:block;text-align:center;margin-top:16px;color:var(--pool);font-weight:600;font-size:14.5px}
.err{background:rgba(224,72,72,.1);color:#b91c1c;padding:11px 14px;border-radius:var(--r-sm);font-size:14px;margin-bottom:13px}
.toast{position:fixed;bottom:100px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;
  padding:11px 18px;border-radius:30px;font-size:14px;z-index:50;box-shadow:var(--shadow);max-width:90%}
.spin{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ============ Landing page (static, crawlable) ============ */
#landing{max-width:920px;margin:0 auto;padding:0 20px 40px}
.lp-nav{display:flex;align-items:center;justify-content:space-between;padding:18px 2px}
.lp-brand{font-family:"Space Grotesk";font-weight:600;font-size:20px;color:var(--pool-deep);display:flex;align-items:center;gap:8px}
.lp-brand .mark{width:24px;height:24px}
.lp-login{font-weight:600;color:var(--pool);font-size:15px;padding:10px 12px}
.lp-hero{padding:34px 0 30px;max-width:680px}
.lp-eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--water);font-weight:600;margin-bottom:14px}
.lp-hero h1{font-family:"Space Grotesk";font-size:38px;line-height:1.08;letter-spacing:-1px;color:var(--ink)}
.lp-sub{font-size:17px;line-height:1.5;color:var(--muted);margin-top:16px}
.lp-cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.lp-feat,.lp-region,.lp-faq{padding:30px 0;border-top:1px solid var(--line)}
.lp-feat h2,.lp-region h2,.lp-faq h2{font-family:"Space Grotesk";font-size:24px;letter-spacing:-.4px;color:var(--ink);margin-bottom:20px}
.lp-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.lp-grid article{background:var(--surface);border-radius:var(--r);box-shadow:var(--shadow);padding:18px}
.lp-grid h3{font-family:"Space Grotesk";font-size:16.5px;color:var(--pool-deep);margin-bottom:7px}
.lp-grid p{font-size:14.5px;line-height:1.5;color:var(--muted)}
.lp-region{max-width:680px}
.lp-region p{font-size:16px;line-height:1.55;color:var(--muted)}
.lp-faq details{background:var(--surface);border-radius:var(--r-sm);box-shadow:var(--shadow);padding:14px 16px;margin-bottom:10px}
.lp-faq summary{font-family:"Space Grotesk";font-weight:500;font-size:15.5px;color:var(--ink);cursor:pointer;list-style:none}
.lp-faq summary::-webkit-details-marker{display:none}
.lp-faq summary::after{content:"+";float:right;color:var(--water);font-weight:600}
.lp-faq details[open] summary::after{content:"–"}
.lp-faq details p{font-size:14.5px;line-height:1.5;color:var(--muted);margin-top:10px}
.lp-foot{display:flex;flex-direction:column;gap:6px;padding-top:26px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.lp-foot .mark{width:18px;height:18px}
@media(max-width:560px){.lp-hero h1{font-size:31px}.lp-grid{grid-template-columns:1fr}.lp-sub{font-size:16px}}