/* ---------- themes ---------- */
:root,[data-theme="pool"]{
  --ink:#0C272F; --ink-soft:#4A6068;
  --surface:#EAF2F3; --card:#FFFFFF; --line:#D2E0E2; --line-soft:#E4EDEE;
  --pool:#0E6B83; --accent:#11A0BE;
  --header-bg:#082F3D; --header-text:#EAF6F8; --header-sub:#9FC4CC;
  --input-disabled:#EDF1F2;
}
[data-theme="day"]{
  --ink:#152028; --ink-soft:#5A6B73;
  --surface:#F3F5F6; --card:#FFFFFF; --line:#DCE2E4; --line-soft:#EBEFF0;
  --pool:#1C6E86; --accent:#1A9FBD;
  --header-bg:#FFFFFF; --header-text:#152028; --header-sub:#7E8C92;
  --input-disabled:#EDF0F1;
}
[data-theme="night"]{
  --ink:#E6EEF0; --ink-soft:#90A4AC;
  --surface:#0E171C; --card:#16232A; --line:#2A3B43; --line-soft:#1E2E35;
  --pool:#34C5E0; --accent:#3FD0EA;
  --header-bg:#070F14; --header-text:#E6EEF0; --header-sub:#7C939C;
  --input-disabled:#1B2A31;
}
:root{--z-a2:#2E8BC0; --z-b1:#2AA98A; --z-b2:#E0A23C; --z-c:#DF5A48; --z-none:#90A4A9;}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--surface);color:var(--ink);font-family:'DM Sans',system-ui,sans-serif;font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;transition:background .25s,color .25s;}
a{color:var(--pool);text-decoration:none;}
a:hover{text-decoration:underline;}
h1{font-family:'Orbitron',sans-serif;font-weight:800;text-transform:uppercase;letter-spacing:.01em;font-size:clamp(24px,4vw,38px);margin:.1em 0 .6em;}
h2{font-family:'Orbitron',sans-serif;font-weight:700;text-transform:uppercase;letter-spacing:.04em;font-size:19px;margin:0 0 16px;}
.eyebrow{font-family:'Orbitron',sans-serif;font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin:0 0 6px;}
.eyebrow a{color:var(--accent);}
.muted{color:var(--ink-soft);font-size:14px;}

/* ---------- topbar ---------- */
.topbar{background:var(--header-bg);color:var(--header-text);transition:background .25s;}
.topbar-inner{max-width:1100px;margin:0 auto;padding:16px clamp(16px,4vw,40px);display:flex;align-items:center;justify-content:space-between;gap:16px;}
.brand{font-family:'Orbitron',sans-serif;font-weight:700;text-transform:uppercase;letter-spacing:.12em;font-size:16px;color:var(--header-text);}
.brand:hover{text-decoration:none;}
.topnav{display:flex;align-items:center;gap:18px;font-size:14px;}
.topnav a{color:var(--header-text);opacity:.9;}
.topnav .who{color:var(--header-sub);font-size:13px;}
.inline-form{margin:0;}
.link-btn{background:none;border:none;color:var(--header-text);font:inherit;cursor:pointer;opacity:.9;padding:0;}
.link-btn:hover{text-decoration:underline;}
.btn-sm{border:1px solid var(--accent);color:var(--accent)!important;border-radius:7px;padding:6px 12px;font-weight:600;}
.btn-sm:hover{background:var(--accent);color:#fff!important;text-decoration:none;}

.container{max-width:1100px;margin:0 auto;padding:32px clamp(16px,4vw,40px) 90px;}

/* ---------- alerts ---------- */
.alert{border-radius:9px;padding:11px 14px;font-size:14px;margin-bottom:16px;}
.alert-error{background:color-mix(in srgb,var(--z-c) 14%,var(--card));color:var(--z-c);border:1px solid color-mix(in srgb,var(--z-c) 35%,var(--card));}
.alert-success{background:color-mix(in srgb,var(--z-b1) 16%,var(--card));color:var(--z-b1);border:1px solid color-mix(in srgb,var(--z-b1) 38%,var(--card));}
.empty-note{background:var(--card);border:1px dashed var(--line);border-radius:12px;padding:22px;color:var(--ink-soft);margin-bottom:26px;}

/* ---------- forms ---------- */
.auth-wrap{max-width:420px;margin:14px auto;}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;}
.form-wide{margin-top:30px;}
.stack{display:flex;flex-direction:column;gap:15px;}
.grid-form{display:grid;grid-template-columns:repeat(2,1fr);gap:15px 18px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field-full{grid-column:1/-1;}
.field label{font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);}
.field input,.field select{font-family:'DM Sans',sans-serif;font-size:15px;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:10px 12px;height:42px;transition:border-color .15s,box-shadow .15s;}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent);}
.field input:disabled,.field select:disabled{background:var(--input-disabled);cursor:not-allowed;}
.hint{font-size:12px;color:var(--ink-soft);margin:0;}
.checks{display:flex;flex-wrap:wrap;gap:14px;}
.check{display:flex;align-items:center;gap:7px;font-size:14px;color:var(--ink);font-weight:400;letter-spacing:normal;text-transform:none;}
.check input{width:17px;height:17px;accent-color:var(--pool);}
.radios{display:flex;flex-wrap:wrap;gap:18px;}
.radio{display:flex;align-items:center;gap:7px;font-size:14px;color:var(--ink);font-weight:400;letter-spacing:normal;text-transform:none;}
.radio input{width:17px;height:17px;accent-color:var(--pool);}
.is-hidden{display:none;}
.btn-add{margin:2px 0 24px;}
.error-stack{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;line-height:1.5;white-space:pre-wrap;word-break:break-word;background:var(--line-soft);border:1px solid var(--line);border-radius:8px;padding:14px;overflow:auto;max-height:360px;color:var(--ink);}

.btn{font-family:'DM Sans',sans-serif;font-size:15px;font-weight:600;border-radius:8px;padding:11px 20px;cursor:pointer;border:1px solid transparent;transition:all .15s;}
.btn-primary{background:var(--pool);color:#fff;}
.btn-primary:hover{background:var(--accent);}

/* ---------- athlete grid ---------- */
.athlete-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-bottom:10px;}
.athlete-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;color:var(--ink);transition:border-color .15s,transform .15s;}
.athlete-card:hover{border-color:var(--accent);transform:translateY(-2px);text-decoration:none;}
.athlete-name{font-family:'Orbitron',sans-serif;font-weight:700;font-size:17px;margin-bottom:9px;}
.athlete-meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px;}
.athlete-cta{font-size:13px;color:var(--pool);font-weight:600;}

/* ---------- day / session ---------- */
.day-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:10px;}
.day-picker{display:flex;flex-direction:column;gap:6px;}
.day-picker label{font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);}
.day-picker input{font-family:'DM Sans',sans-serif;font-size:15px;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:8px;padding:9px 12px;height:42px;}
.day-total{font-size:15px;color:var(--ink-soft);margin:6px 0 22px;}
.day-total b{font-family:'Orbitron',sans-serif;color:var(--pool);font-size:18px;}
.placeholder-note{display:inline-block;margin-left:10px;font-size:12px;color:var(--ink-soft);background:var(--line-soft);border-radius:6px;padding:2px 9px;}

.session{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));align-items:start;}
.wk-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:17px;position:relative;overflow:hidden;}
.wk-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;}
.wk-card.z-a2::before{background:var(--z-a2);} .wk-card.z-b1::before{background:var(--z-b1);}
.wk-card.z-b2::before{background:var(--z-b2);} .wk-card.z-c::before{background:var(--z-c);}
.wk-card.z-none::before{background:var(--z-none);}
.wk-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:10px;}
.wk-dist{font-family:'Orbitron',sans-serif;font-weight:700;font-size:18px;color:var(--pool);}
.wk-dist small{font-family:'DM Sans',sans-serif;font-size:12px;color:var(--ink-soft);font-weight:400;}
.wk-desc{font-size:13px;line-height:1.62;color:var(--ink);opacity:.92;white-space:pre-line;margin:0;padding-top:11px;border-top:1px dashed var(--line);}

.tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:11px;}
.tag{font-size:11px;font-weight:500;letter-spacing:.02em;border-radius:5px;padding:3px 8px;white-space:nowrap;background:var(--line-soft);color:var(--ink-soft);}
.tag-phase{text-transform:uppercase;}
.tag-zone{font-family:'Orbitron',sans-serif;color:#fff;font-weight:600;font-size:10px;}
.tag-zone.z-a2{background:var(--z-a2);} .tag-zone.z-b1{background:var(--z-b1);}
.tag-zone.z-b2{background:var(--z-b2);} .tag-zone.z-c{background:var(--z-c);}
.tag-target{background:color-mix(in srgb,var(--pool) 12%,var(--card));color:var(--pool);border:1px solid var(--line);}
.tag-sco{background:color-mix(in srgb,var(--z-c) 15%,var(--card));color:var(--z-c);border:1px solid color-mix(in srgb,var(--z-c) 35%,var(--card));}

/* ---------- gear + modal ---------- */
.gear{position:fixed;right:20px;bottom:20px;z-index:60;width:50px;height:50px;border-radius:50%;background:var(--pool);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(0,0,0,.28);transition:transform .18s,background .18s;}
.gear:hover{transform:rotate(35deg);background:var(--accent);}
.gear svg{width:24px;height:24px;}
.overlay{position:fixed;inset:0;z-index:80;background:rgba(4,12,16,.6);backdrop-filter:blur(3px);display:none;align-items:center;justify-content:center;padding:20px;}
.overlay.open{display:flex;}
.modal{background:var(--card);border-radius:16px;width:100%;max-width:380px;padding:24px;box-shadow:0 24px 60px rgba(0,0,0,.45);}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.modal-head h2{margin:0;font-size:16px;}
.modal-close{background:none;border:none;font-size:24px;line-height:1;color:var(--ink-soft);cursor:pointer;padding:2px 8px;border-radius:6px;}
.modal-close:hover{color:var(--ink);background:var(--line-soft);}
.section-label{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin:0 0 9px;}
.theme-list{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;}
.theme-opt{display:flex;flex-direction:column;align-items:center;gap:8px;font-family:'Orbitron',sans-serif;font-size:11px;font-weight:600;letter-spacing:.07em;color:var(--ink);background:var(--surface);border:1.5px solid var(--line);border-radius:9px;padding:11px 8px;cursor:pointer;transition:all .15s;}
.theme-opt:hover{border-color:var(--accent);}
.theme-opt.active{border-color:var(--pool);box-shadow:0 0 0 1px var(--pool);}
.swatch{width:100%;height:24px;border-radius:5px;box-shadow:0 0 0 1px rgba(0,0,0,.12);}
.sw-night{background:linear-gradient(135deg,#0E171C 0 58%,#34C5E0 58% 100%);}
.sw-day{background:linear-gradient(135deg,#FFFFFF 0 58%,#1A9FBD 58% 100%);}
.sw-pool{background:linear-gradient(135deg,#082F3D 0 40%,#EAF2F3 40% 72%,#11A0BE 72% 100%);}

@media (max-width:620px){
  .grid-form{grid-template-columns:1fr;}
}

/* ---------- athlete summary ---------- */
.athlete-summary{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:0 0 24px;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px 22px;}
.summary-item{display:flex;flex-direction:column;gap:3px;}
.summary-item .k{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);}
.summary-item .v{font-size:15px;color:var(--ink);}