/* Freediving NYC — shared design system (v2)
   Palette: abyss #02060f · deep #04101d · mid #072031 · surface #0b3247
   Accent: glacial cyan #6fe3d6/#a8f4ea · sunlight gold #e9d5a3
   Typography: Georgia serif display + system sans UI */

:root{
  --abyss:#02060f; --deep:#04101d; --mid:#072031; --surface:#0b3247;
  --foam:#e9f4f2; --dim:#8fb0b6; --faint:#51707a;
  --glow:#6fe3d6; --glow-bright:#a8f4ea; --sun:#e9d5a3;
  --line:rgba(111,227,214,.22); --line-soft:rgba(111,227,214,.1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--abyss);color:var(--foam);font-family:Georgia,'Times New Roman',serif;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(120% 60% at 50% -10%, rgba(11,50,71,.5), transparent 60%)}
main{position:relative;z-index:1}
.ui,h2 small{font-family:-apple-system,'Segoe UI',Roboto,sans-serif}
h1,h2,h3{font-weight:normal;letter-spacing:.01em}
a{color:var(--glow-bright)}
.glow{color:var(--glow)}
.gold{color:var(--sun)}
.kicker{font-family:-apple-system,sans-serif;font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--glow);margin-bottom:16px}
.depth-tag{font-family:-apple-system,sans-serif;font-size:11px;letter-spacing:.34em;color:var(--faint);text-transform:uppercase;margin-bottom:10px}
.depth-tag b{color:var(--glow);font-weight:500}
section{position:relative}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:80;display:flex;justify-content:space-between;align-items:center;
  padding:14px 36px;background:linear-gradient(to bottom,rgba(2,6,15,.92),rgba(2,6,15,0))}
.logo{letter-spacing:.24em;font-size:14px;color:var(--glow-bright);text-transform:uppercase;text-decoration:none}
.logo b{color:var(--foam);font-weight:normal}
.navlinks{display:flex;gap:26px;align-items:center}
.navlinks a{font-family:-apple-system,sans-serif;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);text-decoration:none}
.navlinks a:hover,.navlinks a.active{color:var(--glow-bright)}
.navcta{font-family:-apple-system,sans-serif;font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--abyss);background:linear-gradient(135deg,#a8f4ea,#58cfc0);padding:10px 20px;border-radius:2px;text-decoration:none;white-space:nowrap}
.navcta:hover{filter:brightness(1.08)}
@media(max-width:900px){.navlinks a:not(.navcta){display:none}nav{padding:14px 18px}.logo{font-size:12px}}

/* HERO (shared) */
.hero{min-height:78vh;display:flex;align-items:flex-end;padding:140px 6vw 70px;
  background:linear-gradient(to top,var(--abyss) 4%,rgba(4,16,29,.55) 45%,rgba(11,50,71,.55))}
.hero.home{min-height:100vh;align-items:center;text-align:center}
.hero-inner{max-width:900px;margin:0 auto}
.hero.home .hero-inner{max-width:920px}
.hero h1{font-size:clamp(36px,5.2vw,72px);line-height:1.05;margin-bottom:20px}
.hero h1 em{font-style:italic;color:var(--glow)}
.hero .sub{font-family:-apple-system,sans-serif;font-size:clamp(14px,1.6vw,17px);color:var(--dim);letter-spacing:.02em;max-width:680px;line-height:1.65}
.hero.home .sub{margin:0 auto 34px}
.hero .sub b{color:var(--foam);font-weight:500}
.btn{display:inline-block;font-family:-apple-system,sans-serif;font-size:14px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--abyss);background:linear-gradient(135deg,#a8f4ea,#58cbe0);padding:16px 34px;border-radius:2px;text-decoration:none;border:none;cursor:pointer}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--glow-bright);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--glow);filter:none}
.trust{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px}
.hero.home .trust{justify-content:center}
.trust span{font-family:-apple-system,sans-serif;font-size:12.5px;color:var(--dim);letter-spacing:.04em}
.trust span::before{content:"◆";color:var(--glow);font-size:9px;margin-right:8px;vertical-align:2px}

/* SECTION SHELL */
.wrap{position:relative;z-index:2;max-width:1100px;margin:0 auto;padding:96px 6vw}
h2.sec{font-size:clamp(28px,3.6vw,46px);margin-bottom:14px;line-height:1.12}
h2.sec em{font-style:italic;color:var(--glow)}
.lead-p{color:var(--dim);max-width:680px;line-height:1.65;margin-bottom:48px;font-size:16.5px}
.lead-p b{color:var(--foam)}

/* BLOCKS */
.block{border-top:1px solid var(--line-soft);padding:34px 0}
.block h3{font-size:24px;margin-bottom:12px}
.block p{font-size:15.5px;line-height:1.7;color:var(--dim);max-width:720px}
.block p b{color:var(--foam);font-weight:normal}
.block ul{list-style:none;margin-top:14px}
.block li{font-size:14.5px;color:var(--dim);padding:6px 0 6px 22px;position:relative;line-height:1.6}
.block li::before{content:"—";position:absolute;left:0;color:var(--glow)}

/* CARDS / GRIDS */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.grid2,.grid3{grid-template-columns:1fr}}
.card{border:1px solid var(--line-soft);background:rgba(7,32,49,.35);padding:28px 26px;border-radius:4px;display:flex;flex-direction:column}
.card h4{font-family:Georgia,serif;font-size:19px;color:var(--glow-bright);margin-bottom:10px}
.card p{font-size:14px;line-height:1.62;color:var(--dim)}
.card p b{color:var(--foam)}
.card .go{font-family:-apple-system,sans-serif;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--glow-bright);text-decoration:none;border-bottom:1px solid var(--glow);padding-bottom:3px;margin-top:18px;align-self:flex-start}
.card .go:hover{color:var(--foam)}
.price-line{font-family:-apple-system,sans-serif;font-size:13px;letter-spacing:.06em;color:var(--sun);border:1px dashed rgba(233,213,163,.35);border-radius:3px;padding:10px 14px;margin:14px 0 4px;text-align:center}
.meta{font-family:-apple-system,sans-serif;font-size:12.5px;color:var(--faint);letter-spacing:.04em}

/* TABLES */
.tbl{width:100%;border-collapse:collapse;font-family:-apple-system,sans-serif;font-size:14px}
.tbl th{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--glow);text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.tbl td{padding:10px 12px;border-bottom:1px solid var(--line-soft);color:var(--dim);vertical-align:top;line-height:1.5}
.tbl td:first-child{color:var(--foam)}
.tbl td b{color:var(--foam);font-weight:600}
.tbl .yes{color:var(--glow)} .tbl .no{color:var(--faint)}

/* INSTRUCTOR CARDS */
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:860px){.team{grid-template-columns:1fr}}
.person{border:1px solid var(--line-soft);background:rgba(7,32,49,.35);padding:28px 26px;border-radius:4px}
.person .role{font-family:-apple-system,sans-serif;font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--glow);margin-bottom:10px}
.person h4{font-size:22px;margin-bottom:6px}
.person .cert{font-family:-apple-system,sans-serif;font-size:12.5px;color:var(--sun);margin-bottom:12px;letter-spacing:.03em}
.person p{font-size:13.5px;line-height:1.6;color:var(--dim)}
.person .ava{width:56px;height:56px;border-radius:50%;margin-bottom:16px;flex:none;
  background:radial-gradient(circle at 35% 30%,rgba(168,244,234,.5),rgba(7,32,49,.9)),var(--mid);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--glow-bright)}

/* FORM */
.res-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
@media(max-width:860px){.res-grid{grid-template-columns:1fr;gap:36px}}
form{border:1px solid var(--line);background:rgba(4,16,29,.75);padding:36px 32px;border-radius:4px}
.f-row{margin-bottom:18px}
label{display:block;font-family:-apple-system,sans-serif;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--glow);margin-bottom:8px}
input,select,textarea{width:100%;background:rgba(2,6,15,.6);border:1px solid var(--line-soft);color:var(--foam);
  font-family:-apple-system,sans-serif;font-size:15px;padding:13px 14px;outline:none;border-radius:2px}
input:focus,select:focus,textarea:focus{border-color:var(--glow)}
select option{background:#072031}
.consent{display:flex;gap:10px;align-items:flex-start;font-family:-apple-system,sans-serif;font-size:12px;color:var(--dim);line-height:1.5;margin:22px 0}
.consent input{width:auto;margin-top:2px}
.ok-msg{display:none;border:1px solid var(--glow);padding:40px 30px;text-align:center}
.ok-msg .big{font-size:22px;color:var(--glow-bright);margin-bottom:10px}
.res-left p{color:var(--dim);line-height:1.65;font-size:16px;margin-bottom:16px}
.res-left .mini{font-size:13.5px}
.res-left .mini span{color:var(--glow)}

/* FOOTER */
footer{border-top:1px solid var(--line-soft);padding:44px 6vw 60px;text-align:center;color:#3d565e;font-size:13px;font-family:-apple-system,sans-serif;line-height:2.1}
footer a{color:var(--faint);text-decoration:none}
footer a:hover{color:var(--glow)}
footer .fl{display:flex;gap:8px 26px;justify-content:center;flex-wrap:wrap}

/* CHAT */
.chat-fab{position:fixed;right:22px;bottom:22px;z-index:100;width:62px;height:62px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,#a8f4ea,#58cbe0);color:var(--abyss);font-family:Georgia,serif;font-size:20px;
  box-shadow:0 8px 30px rgba(111,227,214,.3)}
.chat-panel{position:fixed;right:22px;bottom:96px;z-index:100;width:min(370px,calc(100vw - 32px));background:#04101d;
  border:1px solid var(--line);border-radius:10px;overflow:hidden;display:none;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.chat-panel.open{display:flex}
.chat-head{height:78px;background:linear-gradient(135deg,#072031,#0b3247);display:flex;align-items:center;padding:0 16px}
.chat-title .nm{font-size:17px}
.chat-title .st{font-family:-apple-system,sans-serif;font-size:11.5px;color:var(--glow);letter-spacing:.06em}
.chat-body{padding:16px;display:flex;flex-direction:column;gap:10px;max-height:300px;overflow-y:auto}
.msg{max-width:85%;padding:11px 14px;border-radius:10px;font-family:-apple-system,sans-serif;font-size:13.5px;line-height:1.5}
.msg.bot{background:rgba(111,227,214,.08);border:1px solid var(--line-soft);color:var(--foam)}
.msg.me{align-self:flex-end;background:linear-gradient(135deg,#a8f4ea,#58cbe0);color:var(--abyss)}
.quick{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 12px}
.quick button{font-family:-apple-system,sans-serif;font-size:12.5px;color:var(--glow-bright);background:transparent;
  border:1px solid var(--line-soft);border-radius:100px;padding:8px 14px;cursor:pointer}
.quick button:hover{border-color:var(--glow)}
.chat-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line-soft)}
.chat-input input{flex:1}
.chat-input button{background:linear-gradient(135deg,#a8f4ea,#58cbe0);border:none;color:var(--abyss);border-radius:2px;padding:0 18px;cursor:pointer;font-size:15px}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.on{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}