/* Layout: instrument panel — readout strip, live sea canvas, control column. Dark-first, square corners (house rule). */
:root{
  --void:#080E16; --deep:#111D2C; --surface:#1C2D40; --border:#3A5570; --mist:#7A9AB5; --foam:#E6EEF5;
  --tidal:#00C8A0; --amber:#F5A623; --storm:#E63946;
  --f-display:"Chakra Petch", "Rajdhani", system-ui, sans-serif;
  --f-body:"DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono:"JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  color-scheme:dark;
}
@media (prefers-color-scheme: light){ :root:not([data-theme="dark"]){
  --void:#F2F6F9; --deep:#E4ECF2; --surface:#FFFFFF; --border:#B6C7D6; --mist:#4E6A82; --foam:#0B1724;
  --tidal:#007A62; --amber:#A8650A; --storm:#C0283A; color-scheme:light } }
:root[data-theme="light"]{
  --void:#F2F6F9; --deep:#E4ECF2; --surface:#FFFFFF; --border:#B6C7D6; --mist:#4E6A82; --foam:#0B1724;
  --tidal:#007A62; --amber:#A8650A; --storm:#C0283A; color-scheme:light }
*{box-sizing:border-box;border-radius:0}
body{background:var(--void);color:var(--foam);font-family:var(--f-body);font-weight:400;font-size:15px;line-height:1.5}
.wrap{max-width:1240px;margin:0 auto;padding-inline:16px;padding-block:20px 40px;display:flex;flex-direction:column;gap:16px}
.eyebrow{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--tidal-text)}
h1{font-family:var(--f-display);font-weight:700;font-size:clamp(26px,4vw,38px);line-height:1.05;margin:4px 0 6px;text-wrap:balance}
.lede{color:var(--mist);max-width:66ch;margin:0;font-weight:300}
.tabs{display:flex;flex-wrap:wrap;gap:0;border:1px solid var(--border);align-self:flex-start;max-width:100%}
.tabs button{font:600 13px var(--f-body);background:transparent;color:var(--mist);border:0;border-right:1px solid var(--border);padding:10px 16px;cursor:pointer;text-align:left}
.tabs button:last-child{border-right:0}
.tabs button small{display:block;font:400 10px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;opacity:.8}
.tabs button[aria-pressed="true"]{background:var(--tidal);color:#04140F}
.tabs button:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.readouts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));border:1px solid var(--border);background:var(--deep)}
.ro{padding:10px 14px;border-right:1px solid var(--border);min-width:0}
.ro:last-child{border-right:0}
.ro .k{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist)}
.ro .v{font-family:var(--f-display);font-weight:700;font-size:28px;line-height:1.1;font-variant-numeric:tabular-nums;color:var(--tidal-text)}
.ro .v.amber{color:var(--amber-text)} .ro .v.storm{color:var(--storm-text)} .ro .v.plain{color:var(--foam);font-size:20px;padding-top:6px}
.ro .s{font-size:12px;color:var(--mist);font-weight:300}
.main{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:16px;align-items:start}
@media (max-width:860px){.main{grid-template-columns:minmax(0,1fr)}}
.stage{position:relative;border:1px solid var(--border);background:#06101A;min-width:0}
canvas{display:block;width:100%;height:auto;touch-action:pan-y}
.probe{position:absolute;pointer-events:none;background:rgba(8,14,22,.9);color:#E6EEF5;border:1px solid #3A5570;font:11px/1.4 var(--f-mono);padding:6px 8px;white-space:nowrap}
.stagebar{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;padding:8px 10px;border-top:1px solid var(--border);background:var(--deep);font:11px var(--f-mono);color:var(--mist)}
.stagebar .btns{display:flex;gap:8px;flex-wrap:wrap}
.btn{font:600 12px var(--f-body);padding:7px 12px;background:transparent;color:var(--foam);border:1px solid var(--border);cursor:pointer}
.btn:hover{border-color:var(--tidal)}
.btn[aria-pressed="true"]{border-color:var(--tidal);color:var(--tidal-text)}
.panel{border:1px solid var(--border);background:var(--deep);display:flex;flex-direction:column}
.grp{padding:12px 14px;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:10px}
.grp:last-child{border-bottom:0}
.grp h2{margin:0;font:400 11px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--tidal-text)}
.ctl{display:flex;flex-direction:column;gap:4px}
.ctl .row{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.ctl label{font-size:13px;color:var(--foam)}
.ctl output{font:600 13px var(--f-mono);color:var(--amber-text);font-variant-numeric:tabular-nums}
input[type=range]{width:100%;accent-color:var(--tidal);height:22px}
.seg{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--border)}
.seg button{font:600 12px var(--f-body);padding:7px 4px;background:transparent;color:var(--mist);border:0;border-right:1px solid var(--border);cursor:pointer}
.seg button:last-child{border-right:0}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--tidal-text)}
.tip{font-size:13px;color:var(--foam);font-weight:300;margin:0}
.tip b{font-weight:600;color:var(--tidal-text)}
.tip.warn b{color:var(--amber-text)}
.note{font-size:12.5px;color:var(--mist);font-weight:300;max-width:80ch;margin:0}
.note code{font-family:var(--f-mono);font-size:11.5px;color:var(--foam)}
.legend{display:flex;flex-wrap:wrap;gap:14px;font:11px var(--f-mono);color:var(--mist)}
.legend i{display:inline-block;width:12px;height:12px;vertical-align:-2px;margin-right:5px;border:1px solid var(--border)}
@media (prefers-reduced-motion: reduce){.tabs button{transition:none}}
.tabwrap{display:flex;flex-direction:column;gap:10px;align-items:flex-start} .tabgrp[hidden]{display:none} .regs button{padding:8px 14px} .regs button[aria-pressed="true"]{background:var(--surface);color:var(--tidal-text);box-shadow:inset 0 -3px 0 var(--tidal)}
.tabgrp{display:flex;flex-direction:column;gap:6px;min-width:0;max-width:100%}
.tablab{font:400 10.5px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}
.stagehead{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:baseline;margin-bottom:8px}
.kind{font:600 10.5px var(--f-mono);letter-spacing:.12em;text-transform:uppercase;padding:3px 8px;border:1px solid var(--border)}
.kind.real{color:var(--tidal-text);border-color:var(--tidal)} .kind.ill{color:var(--amber-text);border-color:var(--amber)}
.srcline{margin:0;font-size:12px;color:var(--mist);font-weight:300;flex:1 1 320px;min-width:0}
.srcline b{color:var(--foam);font-weight:600}
.peel{display:grid;grid-template-columns:minmax(220px,1.1fr) 1.4fr 1fr 1fr;border:1px solid var(--border);background:var(--deep)}
.peel>*{border-right:1px solid var(--border);min-width:0} .peel>*:last-child{border-right:0}
.pgwrap{display:flex;align-items:flex-end;gap:10px;padding:8px 12px}
#pg{width:150px;flex:0 0 150px;display:block}
.pa .v{font-family:var(--f-display);font-weight:700;font-size:30px;line-height:1.1;color:var(--foam);font-variant-numeric:tabular-nums}
.pa .k{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist)}
.pa .s{font-size:12px;color:var(--mist);font-weight:300}
#pWho{font-size:20px;padding-top:6px}
@media (max-width:860px){.peel{grid-template-columns:1fr 1fr}.peel>*{border-bottom:1px solid var(--border)}.pgwrap{grid-column:1/-1}}
.xsec{margin-top:14px;border:1px solid var(--border);background:var(--deep);min-width:0}
.xhead{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;padding:10px 12px;border-bottom:1px solid var(--border)}
.xhead h2{margin:0;font:400 11px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--tidal-text);margin-right:auto}
.seg2{grid-template-columns:repeat(2,auto)} .seg2 button{padding:7px 12px}
#xc{display:block;width:100%;touch-action:pan-y}
.xmode{font:11px var(--f-mono);color:var(--mist);flex-basis:100%}
.notfc{border:1px solid var(--amber);background:var(--deep);padding:10px 14px;font-size:14px;font-weight:300;max-width:none}
.notfc b{font-weight:600;color:var(--amber-text)} .notfc a,.safe a,.method a{color:var(--tidal-text)}
.s3d{display:grid;grid-template-columns:minmax(0,260px) minmax(0,1fr);gap:14px;align-items:center;border:1px solid var(--border);background:var(--deep);padding:10px;border-radius:6px;margin:10px 0} .s3d img{width:100%;height:auto;display:block;border-radius:4px} .s3dtx .k{font:600 11px "JetBrains Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--tidal-text)} .s3dtx p{margin:4px 0 8px;font-size:14px} .s3dl{display:flex;flex-wrap:wrap;gap:8px 16px} .s3dl a{color:var(--tidal-text);font-weight:600;text-decoration:none} .s3dl a:hover{text-decoration:underline} @media (max-width:560px){.s3d{grid-template-columns:1fr}}
.spotwarn{border:1px solid var(--storm);background:var(--deep);padding:10px 14px;font-size:14px;font-weight:400} .spotwarn b{color:var(--storm-text);font-weight:600}
.mob{margin:0 0 8px;font-size:13.5px;font-weight:400;padding:7px 10px;border-left:3px solid var(--border);background:var(--deep)}
.mob.rock{border-left-color:var(--tidal)} .mob.sand{border-left-color:var(--amber)} .mob b{font-weight:600}
.safe{margin-top:6px;font-size:11.5px}
.tidesub{font:11px var(--f-mono);color:var(--mist)} .tidebtns{display:flex;gap:6px;flex-wrap:wrap;margin-top:4px} .tidebtns .btn{padding:5px 9px;font-size:11.5px}
.method{border:1px solid var(--border);background:var(--deep);padding:14px 16px;display:flex;flex-direction:column;gap:10px}
.method h2{margin:0;font:400 11px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--tidal-text)}
.method p,.method li{font-size:13.5px;font-weight:300;color:var(--foam);max-width:92ch;margin:0} .method ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:4px}
.method .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px 28px} .method h3{margin:0 0 4px;font:600 13px var(--f-body);color:var(--foam)}
.conf{margin-top:4px;font:600 10.5px var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--mist)}
.conf.gA{color:var(--tidal-text)} .conf.gB{color:var(--amber-text)} .conf.gC{color:var(--storm-text)} .conf.ill{color:var(--amber-text)}
.fp{border:1px solid var(--border);background:var(--deep);padding:12px 14px;display:flex;flex-direction:column;gap:10px}
.fphead{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center}
.fphead h2{margin:0 auto 0 0;font:400 11px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--tidal-text)}
.fphead .seg{grid-template-columns:repeat(3,auto)} .fphead .seg button{padding:7px 10px}
.fpsum{margin:0;font-size:14px;font-weight:300;max-width:90ch} .fpsum b{font-weight:600;color:var(--tidal-text)}
.fpwrap{position:relative;max-width:640px}
.fpins{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:0;border:1px solid var(--border)} .fpins:empty{display:none}
.fpi{padding:10px 12px;border-right:1px solid var(--border);min-width:0;display:flex;flex-direction:column;gap:4px} .fpi:last-child{border-right:0}
.fpi h3{margin:0;font:400 10.5px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}
.fpv{margin:0;font:700 19px var(--f-body);line-height:1.15} .fpv.lo{color:var(--mist)} .fpv.mid{color:var(--tidal-text)} .fpv.hi{color:var(--amber-text)}
.fpbars{display:flex;gap:3px;align-items:stretch;margin-top:4px}
.fpb{flex:1 1 0;min-width:0;background:transparent;border:1px solid transparent;padding:2px 1px;cursor:pointer;display:flex;flex-direction:column;gap:3px;color:var(--mist)}
.fpb:hover{border-color:var(--border)} .fpb.cur{border-color:var(--amber)}
.fpb .trk{position:relative;display:block;height:64px;background:linear-gradient(var(--border),var(--border)) 0 50%/100% 1px no-repeat}
.fpb .trk i{position:absolute;left:18%;right:18%} .fpb .trk i.up{bottom:50%;background:var(--tidal)} .fpb .trk i.dn{top:50%;background:var(--mist)}
.fpb em{font:400 10.5px var(--f-mono);font-style:normal;text-align:center;white-space:nowrap;overflow:hidden;font-variant-numeric:tabular-nums}
.fpi.wide{grid-column:span 2} .fpb.far{cursor:default;opacity:.55} .fpc.na{background:transparent;border:1px dashed var(--border);cursor:default}
@media (max-width:700px){.fpi.wide{grid-column:auto}}
.t3title{margin:8px 0 0;font:400 11px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--tidal-text)} #tide3h span{color:var(--mist);font-size:12.5px}
.tide3{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));border:1px solid var(--border)} .tide3:empty{display:none}
.t3{display:flex;flex-direction:column;gap:3px;text-align:left;padding:10px 12px;background:transparent;color:var(--foam);border:0;border-right:1px solid var(--border);cursor:pointer;font:300 13px var(--f-body);min-width:0} .t3:last-child{border-right:0}
.t3:hover{background:var(--surface)} .t3.cur{box-shadow:inset 0 0 0 2px var(--amber)}
.t3 canvas{width:100%;max-width:220px;height:auto;image-rendering:auto;border:1px solid var(--border);margin-bottom:4px}
.t3n{font:600 14px var(--f-body)} .t3n i{font:400 11px var(--f-mono);font-style:normal;color:var(--mist);margin-left:6px}
.t3r{color:var(--mist)} .t3r b{font-weight:600;color:var(--foam);font-variant-numeric:tabular-nums}
@media (max-width:700px){.t3{border-right:0;border-bottom:1px solid var(--border)} .t3:last-child{border-bottom:0}}
.sects{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px} .sects button{font:inherit;font-size:12px;padding:5px 10px;border-radius:999px;border:1px solid var(--border);background:transparent;color:var(--mist);cursor:pointer} .sects button[aria-pressed=true]{border-color:var(--amber);color:var(--foam)}
#sect3{margin-top:14px;overflow-x:auto} #sect3 table{border-collapse:collapse;font-size:12.5px;min-width:440px;width:100%} #sect3 th,#sect3 td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--border);vertical-align:top;color:var(--mist)} #sect3 th{font-weight:600;color:var(--foam)} #sect3 td b{color:var(--foam);font-variant-numeric:tabular-nums} #sect3 .rk{color:var(--amber-text)}
.fc{margin:10px 0 14px;padding:12px 14px;border:1px solid var(--border);border-radius:10px;background:var(--surface)} .fchead{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between} .fchead h3{margin:0;font-size:14px;letter-spacing:.04em} .fcbtns{display:flex;gap:6px;flex-wrap:wrap}
#fcC{display:block;width:100%;margin-top:10px} #fcS{width:100%;margin:4px 0 2px} .fct{margin:4px 0;font-size:13px;color:var(--mist);font-variant-numeric:tabular-nums} .fct b{color:var(--foam)} .fcd{margin:4px 0 0;font-size:12px;color:var(--mist)} .fcb{font:inherit;font-size:12px;margin:3px 4px 0 0;padding:4px 9px;border-radius:999px;border:1px solid var(--tidal);background:transparent;color:var(--foam);cursor:pointer}
.fpd{margin:0;font-size:12.5px;color:var(--mist);font-weight:300}
.fpdetail{display:flex;flex-direction:column;gap:10px} .fpdetail[hidden]{display:none}
@media (max-width:700px){.fpi{border-right:0;border-bottom:1px solid var(--border)} .fpi:last-child{border-bottom:0}}
.fpgrid{display:grid;gap:2px}
.fpc{aspect-ratio:1.6;min-height:22px;border:0;padding:0;cursor:pointer;outline-offset:0}
.fpc:hover{outline:2px solid var(--foam)} .fpc.cur{outline:2px solid var(--amber);outline-offset:-2px}
.fpy,.fpx{font:11px var(--f-mono);color:var(--mist);display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums}
.fpy{justify-content:flex-end;padding-right:6px}
.fptip{position:absolute;z-index:3;width:230px;pointer-events:none;background:var(--void);color:var(--foam);border:1px solid var(--border);padding:8px 10px;font-size:12.5px;line-height:1.45}
.fptip b{font-weight:600} .fptip span{color:var(--mist);font-size:11.5px}
.fpfoot{display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;max-width:560px;font:11px var(--f-mono);color:var(--mist)}
.fpleg{display:flex;align-items:center;gap:6px} .fpleg i{display:inline-block;width:120px;height:10px;border:1px solid var(--border)}
.fptable{overflow-x:auto} .fptable table{border-collapse:collapse;font:12px var(--f-mono);font-variant-numeric:tabular-nums}
.fptable th,.fptable td{border:1px solid var(--border);padding:4px 8px;text-align:right} .fptable th{color:var(--mist);font-weight:400}
.xcap{margin:0;padding:10px 12px 0;font-size:13.5px;color:var(--foam);font-weight:400;min-height:calc(3 * 1.5em + 10px);font-variant-numeric:tabular-nums}
.xnote{margin:0;padding:6px 12px 12px;font-size:12px;color:var(--mist);font-weight:300}

@media (max-width:560px){.tabs.regs{grid-template-columns:1fr 1fr}.tabs.regs button:nth-child(odd){border-right:1px solid var(--border)}.tabgrp{width:100%}.tabgrp .tabs{grid-template-columns:1fr 1fr !important}.tabgrp .tabs button{padding:8px 10px}.tabgrp .tabs button:nth-child(odd){border-right:1px solid var(--border)}.tabgrp .tabs button:last-child{border-bottom:1px solid var(--border)}.tabs{display:grid;grid-template-columns:1fr;width:100%;align-self:stretch}.tabs button{border-right:0;border-bottom:1px solid var(--border)}.tabs button:last-child{border-bottom:0}}
.seg5{grid-template-columns:repeat(5,auto)} .seg5 button{padding:7px 10px;white-space:nowrap}
.clock{font:600 11px var(--f-mono);letter-spacing:.06em;color:var(--foam);font-variant-numeric:tabular-nums;min-width:0}
.chk{margin:6px 0 8px;font-size:12.5px;color:var(--mist);font-weight:300} .chk.ok,.chk.mid,.chk.bad{color:var(--foam)} .chk b{font-weight:600;color:var(--tidal-text)} .chk.mid b{color:var(--amber-text)} .chk.bad b{color:var(--storm-text)}
.tl{margin-top:14px} #sv{display:block;width:100%;touch-action:pan-y;cursor:grab;background:#BDD4E6} .sv .seg{grid-template-columns:repeat(3,auto)} .sv .seg button{padding:7px 10px} #tl{display:block;width:100%}
.condsrc{margin:0;padding:8px 14px;border-bottom:1px solid var(--border);font:600 10.5px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mist)} .condsrc.live{color:var(--tidal-text)}

/* phone: tighter readouts, shorter scroll (18 Oct) */
@media (max-width:700px){
  .wrap{gap:12px;padding-block:14px 32px}
  .lede{font-size:14px}
  .readouts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ro{padding:8px 10px;border-bottom:1px solid var(--border)} .ro:nth-child(2n){border-right:0} .ro:nth-last-child(-n+2){border-bottom:0}
  .ro .v{font-size:22px} .ro .v.plain{font-size:16px;padding-top:3px} .ro .s{font-size:11px;line-height:1.35}
  .peel{grid-template-columns:repeat(2,minmax(0,1fr))} .pa .v{font-size:24px} #pWho{font-size:16px}
  .legend{gap:6px 10px;font-size:10px}
  .xnote,.method p,.method li,.fpd,.note{font-size:12px}
  .xsec{margin-top:10px} .xhead{padding:8px 10px} .xcap{font-size:12.5px;min-height:0}
  .grp{padding:10px 12px;gap:8px}
  .stagebar{gap:6px 8px;padding:6px 8px}
  .seg5 button{padding:6px 8px;font-size:11px}
  .btn{padding:6px 9px;font-size:11.5px}
  .method{padding:12px}
}