/* ============ Diving Trips · ocean theme ============ */
:root{
  --deep:#03182e;
  --deeper:#020e1e;
  --mid:#07446e;
  --shallow:#0e6b9e;
  --surface:#35b6d9;
  --foam:#eaf7fc;
  --accent:#7fe3ff;
  --gold:#ffd98a;
  --ink:rgba(234,247,252,.92);
  --ink-dim:rgba(234,247,252,.62);
  --card:rgba(10,50,84,.45);
  --line:rgba(127,227,255,.18);
  --serif:"Cormorant Garamond",Georgia,serif;
  --sans:"Jost","Avenir Next",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  font-weight:300;
  color:var(--ink);
  background:var(--deeper);
  overflow-x:hidden;
  line-height:1.65;
}

/* ---------- ambient background ---------- */
.ocean-bg{position:fixed;inset:0;z-index:-1;overflow:hidden;
  background:linear-gradient(180deg,#0d7cae 0%,#0a5c8f 12%,#07446e 28%,#053252 48%,#03203a 70%,#020e1e 100%);
}
.depth-glow{position:absolute;inset:0;
  background:radial-gradient(120% 55% at 50% -8%,rgba(126,220,255,.38),rgba(126,220,255,.08) 45%,transparent 70%);
}
/* rays of light */
.rays{position:absolute;top:-12vh;left:0;right:0;height:120vh;pointer-events:none;
  mix-blend-mode:screen}
.ray{position:absolute;top:0;height:115vh;
  background:linear-gradient(180deg,rgba(190,240,255,.55),rgba(150,225,255,.14) 45%,transparent 80%);
  -webkit-mask:linear-gradient(90deg,transparent,#000 35%,#000 65%,transparent);
  mask:linear-gradient(90deg,transparent,#000 35%,#000 65%,transparent);
  transform-origin:top center;
  animation:sway 11s ease-in-out infinite alternate, shimmer 7s ease-in-out infinite alternate;
}
.r1{left:8%;width:9vw;transform:rotate(14deg);animation-delay:0s,-2s}
.r2{left:26%;width:14vw;transform:rotate(9deg);animation-delay:-3s,-1s;opacity:.8}
.r3{left:47%;width:8vw;transform:rotate(4deg);animation-delay:-6s,-4s}
.r4{left:63%;width:16vw;transform:rotate(-6deg);animation-delay:-2s,-5s;opacity:.7}
.r5{left:84%;width:10vw;transform:rotate(-13deg);animation-delay:-8s,-3s}
@keyframes sway{
  from{transform:rotate(var(--a,10deg)) translateX(-2.5vw) }
  to{transform:rotate(calc(var(--a,10deg) * -0.3)) translateX(2.5vw)}
}
.r1{--a:14deg}.r2{--a:9deg}.r3{--a:4deg}.r4{--a:-6deg}.r5{--a:-13deg}
@keyframes shimmer{from{opacity:.35}to{opacity:.85}}

/* caustic shimmer */
.caustics{position:absolute;inset:0;opacity:.16;mix-blend-mode:screen;
  background:
    radial-gradient(38% 24% at 22% 18%,rgba(170,235,255,.8),transparent 60%),
    radial-gradient(30% 20% at 68% 10%,rgba(170,235,255,.7),transparent 60%),
    radial-gradient(26% 18% at 45% 30%,rgba(170,235,255,.5),transparent 60%);
  animation:causticsMove 14s ease-in-out infinite alternate;
}
@keyframes causticsMove{
  from{transform:translate(-2%,0) scale(1)}
  to{transform:translate(2%,3%) scale(1.08)}
}

/* bubbles (populated by JS) */
.bubbles{position:absolute;inset:0;pointer-events:none}
.bubble{position:absolute;bottom:-4vh;border-radius:50%;
  background:radial-gradient(circle at 32% 30%,rgba(255,255,255,.85),rgba(255,255,255,.12) 42%,rgba(180,235,255,.06) 70%);
  border:1px solid rgba(210,245,255,.28);
  animation:rise linear infinite;
}
@keyframes rise{
  0%{transform:translate(0,0) scale(.9);opacity:0}
  8%{opacity:.9}
  50%{transform:translate(2.2vw,-55vh) scale(1)}
  100%{transform:translate(-1.5vw,-112vh) scale(1.12);opacity:0}
}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem clamp(1.2rem,5vw,4rem);
  background:linear-gradient(180deg,rgba(3,20,38,.82),rgba(3,20,38,.35) 75%,transparent);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.brand{display:flex;align-items:center;gap:.8rem;text-decoration:none;color:var(--foam)}
.brand-mark{width:42px;height:42px;color:var(--accent);filter:drop-shadow(0 0 10px rgba(127,227,255,.45))}
.brand-text{font-family:var(--serif);font-size:1.35rem;font-weight:500;line-height:1.05;letter-spacing:.02em}
.brand-text small{display:block;font-family:var(--sans);font-size:.6rem;font-weight:400;
  letter-spacing:.32em;text-transform:uppercase;color:var(--gold);margin-top:.25rem}
.site-nav{display:flex;gap:clamp(.9rem,2.4vw,2.2rem)}
.site-nav a{color:var(--ink-dim);text-decoration:none;font-size:.74rem;font-weight:400;
  letter-spacing:.24em;text-transform:uppercase;transition:color .25s}
.site-nav a:hover{color:var(--accent)}

/* ---------- hero ---------- */
.hero{min-height:calc(100vh - 90px);display:flex;flex-direction:column;justify-content:center;
  padding:4rem clamp(1.2rem,7vw,7rem);max-width:1200px;position:relative}
.eyebrow{font-size:.72rem;letter-spacing:.34em;text-transform:uppercase;color:var(--gold);margin-bottom:1.4rem}
.hero h1{font-family:var(--serif);font-weight:500;font-size:clamp(2.6rem,6.4vw,5rem);
  line-height:1.08;color:var(--foam);text-shadow:0 4px 40px rgba(3,24,46,.6)}
.hero h1 em{font-style:italic;color:var(--accent)}
.lede{max-width:34rem;margin-top:1.6rem;font-size:1.08rem;color:var(--ink-dim)}
.hero-actions{display:flex;gap:1rem;margin-top:2.4rem;flex-wrap:wrap}
.btn{display:inline-block;padding:.85rem 1.9rem;border-radius:999px;text-decoration:none;
  font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;transition:.3s}
.btn-solid{background:linear-gradient(135deg,var(--surface),#1f8fc4);color:#04263e;font-weight:500;
  box-shadow:0 6px 30px rgba(53,182,217,.35)}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 10px 38px rgba(53,182,217,.5)}
.btn-ghost{border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.scroll-cue{position:absolute;bottom:2.2rem;left:50%;width:26px;height:44px;border:1.5px solid var(--line);
  border-radius:14px}
.scroll-cue span{position:absolute;top:8px;left:50%;width:4px;height:9px;margin-left:-2px;border-radius:3px;
  background:var(--accent);animation:cue 1.8s ease-in-out infinite}
@keyframes cue{0%{transform:translateY(0);opacity:1}70%{transform:translateY(16px);opacity:0}100%{opacity:0}}

/* ---------- sections ---------- */
.section{padding:clamp(4rem,9vw,7rem) clamp(1.2rem,6vw,6rem);max-width:1280px;margin:0 auto}
.section-head{max-width:44rem;margin-bottom:3rem}
.section-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(2rem,4vw,3rem);color:var(--foam);margin:.4rem 0 .8rem}
.section-head .sub{color:var(--ink-dim)}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.6rem}
.loc-card{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  backdrop-filter:blur(8px);transition:transform .35s,border-color .35s,box-shadow .35s}
.loc-card:hover{transform:translateY(-6px);border-color:rgba(127,227,255,.45);
  box-shadow:0 18px 50px rgba(2,14,30,.55)}
.loc-media{aspect-ratio:16/10;display:grid;place-items:center;
  background:
    radial-gradient(80% 90% at 50% 0%,rgba(127,227,255,.16),transparent 65%),
    linear-gradient(160deg,rgba(14,107,158,.5),rgba(3,32,58,.7));
  border-bottom:1px solid var(--line)}
.loc-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease}
.loc-card:hover .loc-media img{transform:scale(1.05)}
.loc-body{padding:1.4rem 1.5rem 1.7rem}
.loc-body h3,.video-card h3,.info-card h3,.log-body h3{font-family:var(--serif);font-weight:500;
  font-size:1.45rem;color:var(--foam)}
.loc-meta{font-size:.68rem;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);margin:.35rem 0 .7rem}
.loc-body p:last-child{color:var(--ink-dim);font-size:.95rem}

.ph-label{font-size:.68rem;letter-spacing:.26em;text-transform:uppercase;color:rgba(234,247,252,.45);
  border:1px dashed rgba(127,227,255,.35);border-radius:999px;padding:.5rem 1.1rem}

/* gallery */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:150px;gap:1rem}
.gal-item{border-radius:14px;border:1px solid var(--line);display:grid;place-items:center;
  background:
    radial-gradient(70% 80% at 50% 10%,rgba(127,227,255,.14),transparent 60%),
    linear-gradient(150deg,rgba(14,107,158,.45),rgba(3,26,48,.7));
  transition:border-color .3s,transform .3s}
.gal-item:hover{border-color:rgba(127,227,255,.5);transform:scale(1.02)}
.gal-item.tall{grid-row:span 2}
.gal-item.wide{grid-column:span 2}

/* videos */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.6rem}
.video-frame{aspect-ratio:16/9;border-radius:16px;border:1px solid var(--line);
  display:grid;place-items:center;gap:.6rem;position:relative;margin-bottom:1rem;
  background:linear-gradient(160deg,rgba(14,107,158,.4),rgba(2,14,30,.8))}
.play-ring{position:absolute;width:64px;height:64px;border-radius:50%;display:grid;place-items:center;
  border:1.5px solid rgba(127,227,255,.6);color:var(--accent);font-size:1.1rem;padding-left:4px;
  box-shadow:0 0 30px rgba(127,227,255,.25);animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 20px rgba(127,227,255,.2)}50%{box-shadow:0 0 42px rgba(127,227,255,.45)}}
.video-frame .ph-label{position:absolute;bottom:1rem;border:none;padding:0}
.video-card .loc-meta{margin-bottom:0}

/* info */
.info-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.6rem}
.info-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:1.9rem 1.7rem;
  backdrop-filter:blur(8px);transition:transform .3s,border-color .3s}
.info-card:hover{transform:translateY(-5px);border-color:rgba(127,227,255,.45)}
.info-icon{font-size:1.9rem;margin-bottom:.9rem;filter:drop-shadow(0 0 14px rgba(127,227,255,.35))}
.info-card p{color:var(--ink-dim);font-size:.93rem;margin-top:.6rem}

/* dive log */
.log-list{display:flex;flex-direction:column;gap:1.2rem;max-width:52rem}
.log-entry{display:flex;gap:1.6rem;align-items:flex-start;background:var(--card);
  border:1px solid var(--line);border-radius:16px;padding:1.5rem 1.7rem;backdrop-filter:blur(8px);
  transition:border-color .3s}
.log-entry:hover{border-color:rgba(127,227,255,.45)}
.log-date{text-align:center;min-width:64px;border-right:1px solid var(--line);padding-right:1.4rem}
.log-date .d{display:block;font-family:var(--serif);font-size:2rem;color:var(--accent);line-height:1}
.log-date .m{font-size:.62rem;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-dim)}
.log-body p{color:var(--ink-dim);font-size:.95rem;margin-top:.35rem}

/* community */
.community-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.4rem;align-items:start}
@media (max-width:860px){.community-grid{grid-template-columns:1fr}}
.community-title{font-family:var(--serif);font-weight:500;font-size:1.6rem;color:var(--foam);margin-bottom:1.1rem}
.c-form{display:flex;flex-direction:column;gap:.9rem;background:var(--card);border:1px solid var(--line);
  border-radius:18px;padding:1.6rem;backdrop-filter:blur(8px)}
.c-form input[type=text],.c-form textarea{background:rgba(3,24,46,.55);border:1px solid var(--line);
  border-radius:10px;padding:.8rem 1rem;color:var(--ink);font-family:var(--sans);font-size:.95rem;
  font-weight:300;outline:none;transition:border-color .25s;resize:vertical}
.c-form input:focus,.c-form textarea:focus{border-color:var(--accent)}
.c-form ::placeholder{color:rgba(234,247,252,.4)}
.c-form .btn{border:none;cursor:pointer;font-family:var(--sans)}
.file-drop{display:grid;place-items:center;min-height:110px;border:1.5px dashed rgba(127,227,255,.4);
  border-radius:12px;cursor:pointer;color:var(--ink-dim);font-size:.85rem;letter-spacing:.06em;
  padding:1rem;text-align:center;transition:border-color .25s,background .25s}
.file-drop:hover{border-color:var(--accent);background:rgba(127,227,255,.06)}
.file-drop.has-file{border-style:solid;border-color:var(--accent);color:var(--accent)}
.form-msg{font-size:.85rem;min-height:1.2em;color:var(--gold)}
.form-msg.err{color:#ff9d9d}
.community-photos{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.9rem;margin-top:1.6rem}
.cp-item{border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--card)}
.cp-item img{width:100%;aspect-ratio:1;object-fit:cover;display:block}
.cp-item figcaption{padding:.6rem .8rem;font-size:.78rem;color:var(--ink-dim)}
.cp-item figcaption b{color:var(--ink);font-weight:400}
.fact-list{display:flex;flex-direction:column;gap:.9rem;margin-top:1.6rem}
.fact-item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.1rem 1.3rem;
  backdrop-filter:blur(8px)}
.fact-item p{color:var(--ink);font-size:.95rem}
.fact-item .fact-by{margin-top:.5rem;font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}

/* footer */
.site-footer{text-align:center;padding:4.5rem 1.5rem 3.5rem;border-top:1px solid var(--line);
  background:linear-gradient(180deg,transparent,rgba(2,10,20,.6))}
.site-footer .brand-mark{width:38px;height:38px;color:var(--accent);margin-bottom:1rem}
.site-footer .fine{color:var(--ink-dim);font-size:.8rem;margin-top:.4rem}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media (max-width:820px){
  .site-nav{display:none}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .scroll-cue{display:none}
}
@media (prefers-reduced-motion:reduce){
  .ray,.caustics,.bubble,.play-ring,.scroll-cue span{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
}