/* Tinnitus Atlas — design system. Mobile-first, DARK by default, light via [data-theme=light]. */

:root{
  --bg:#0c1120; --surface:#141b30; --surface-2:#1b2340; --text:#e8ecf7; --muted:#98a2bb;
  --line:#242e4d; --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.6);
  --brand-1:#0ea5b7; --brand-2:#5458e8;
  --grad-brand:linear-gradient(135deg,#0ea5b7,#5458e8);
  --c-strong:#34d39b;  --c-strong-bg:#0e2b22;  --c-strong-line:#1c4a3a;
  --c-promising:#6ea1ff;--c-promising-bg:#14213e;--c-promising-line:#263a66;
  --c-emerging:#b48aff; --c-emerging-bg:#241b3e; --c-emerging-line:#3d2f63;
  --c-watch:#f0a944;   --c-watch-bg:#2e2210;   --c-watch-line:#4d3a1d;
  --c-weak:#8b96ad;    --c-weak-bg:#1b2236;    --c-weak-line:#2c3552;
  --r:16px; --r-sm:10px;
  --font-display:"Sora",system-ui,sans-serif;
  --font-body:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#f5f7fc; --surface:#ffffff; --surface-2:#eef2fa; --text:#151a2b; --muted:#5b6478;
  --line:#e3e8f4; --shadow:0 1px 2px rgba(21,26,43,.05),0 8px 24px -12px rgba(21,26,43,.12);
  --c-strong:#0f9d6c;  --c-strong-bg:#e2f6ee;  --c-strong-line:#b5e6d2;
  --c-promising:#2f6fe4;--c-promising-bg:#e7eefc;--c-promising-line:#c3d5f7;
  --c-emerging:#7c4fd8; --c-emerging-bg:#f0eafc; --c-emerging-line:#d9c9f5;
  --c-watch:#c77414;   --c-watch-bg:#fdf1df;   --c-watch-line:#f2d9ae;
  --c-weak:#68738a;    --c-weak-bg:#eceff5;    --c-weak-line:#d5dae6;
  color-scheme:light;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);font:16px/1.6 var(--font-body);
  padding-bottom:calc(72px + env(safe-area-inset-bottom));
}
@media(min-width:900px){body{padding-bottom:0}}
img{max-width:100%}
a{color:var(--c-promising);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.25;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(1.7rem,5.5vw,2.6rem);font-weight:700}
h2{font-size:clamp(1.25rem,3.6vw,1.7rem);font-weight:700}
h3{font-size:1.08rem;font-weight:600}
p{margin:.4em 0 .9em}
[hidden]{display:none!important}
.small{font-size:.86rem}.muted{color:var(--muted)}
.skip-link{position:absolute;left:-999px}
.skip-link:focus{left:12px;top:12px;background:var(--surface);padding:8px 14px;border-radius:8px;z-index:99}

.wrap{max-width:1120px;margin:0 auto;padding:0 18px}

/* ---------- top bar ---------- */
.topbar{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:14px;
  padding:calc(10px + env(safe-area-inset-top)) 18px 10px;
  background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;color:var(--text);font-size:1.05rem;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand .mark{width:30px;height:30px;border-radius:9px;background:var(--grad-brand);display:grid;place-items:center;color:#fff;font-size:15px;flex:none}
.nav-desktop{display:none;gap:2px;margin-left:auto}
.nav-desktop a{padding:7px 12px;border-radius:999px;color:var(--muted);font-weight:500;font-size:.93rem}
.nav-desktop a:hover{text-decoration:none;color:var(--text);background:var(--surface-2)}
.nav-desktop a[aria-current="page"]{color:var(--text);background:var(--surface-2)}
@media(min-width:900px){.nav-desktop{display:flex}}
.theme-btn{margin-left:auto;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:999px;width:36px;height:36px;cursor:pointer;font-size:16px;flex:none}
@media(min-width:900px){.theme-btn{margin-left:6px}}

/* ---------- bottom nav (mobile) ---------- */
.bottomnav{
  position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;
  background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);padding:6px 4px calc(6px + env(safe-area-inset-bottom));
}
.bottomnav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;font-size:.68rem;color:var(--muted);padding:4px 0;border-radius:10px}
.bottomnav a:hover{text-decoration:none}
.bottomnav a .ico{font-size:1.15rem;line-height:1}
.bottomnav a[aria-current="page"]{color:var(--c-promising);font-weight:600}
@media(min-width:900px){.bottomnav{display:none}}

/* ---------- hero ---------- */
.hero{padding:34px 0 10px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-40% -20% auto;height:130%;pointer-events:none;
  background:radial-gradient(50% 60% at 20% 20%,color-mix(in srgb,var(--brand-1) 16%,transparent),transparent 70%),
             radial-gradient(45% 55% at 85% 10%,color-mix(in srgb,var(--brand-2) 14%,transparent),transparent 70%);}
.hero>*{position:relative}
.hero .kicker{font-weight:600;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:1.05rem;color:var(--muted);max-width:46em}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 8px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);padding:10px 16px;box-shadow:var(--shadow)}
.stat b{display:block;font-family:var(--font-display);font-size:1.25rem}
.stat span{font-size:.78rem;color:var(--muted)}

/* ---------- sections ---------- */
.section{padding:26px 0 6px}
.section-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.section-head .more{margin-left:auto;font-size:.9rem;font-weight:600}
.section-sub{color:var(--muted);margin:-8px 0 14px;max-width:52em}

/* ---------- cards ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow)}
.grid{display:grid;gap:14px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media(min-width:640px){.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:1fr 1fr}}
@media(min-width:960px){.grid-3{grid-template-columns:1fr 1fr 1fr}}

/* treatment card */
.tcard{display:flex;flex-direction:column;gap:10px;position:relative;color:var(--text)}
a.tcard:hover{text-decoration:none;border-color:color-mix(in srgb,var(--c-promising) 45%,var(--line));transform:translateY(-1px);transition:.15s}
.tcard .rank{position:absolute;top:-11px;left:14px;background:var(--grad-brand);color:#fff;font-family:var(--font-display);font-weight:700;font-size:.8rem;border-radius:999px;padding:2px 11px;box-shadow:var(--shadow)}
.tcard h3{margin:2px 0 0}
.tcard .cat{font-size:.74rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.tcard .one{color:var(--muted);font-size:.92rem;margin:0}
.tcard .foot{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:6px}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:.74rem;font-weight:600;border-radius:999px;padding:3px 9px;border:1px solid;white-space:nowrap}
.b-strong{color:var(--c-strong);background:var(--c-strong-bg);border-color:var(--c-strong-line)}
.b-promising{color:var(--c-promising);background:var(--c-promising-bg);border-color:var(--c-promising-line)}
.b-emerging{color:var(--c-emerging);background:var(--c-emerging-bg);border-color:var(--c-emerging-line)}
.b-watch{color:var(--c-watch);background:var(--c-watch-bg);border-color:var(--c-watch-line)}
.b-weak{color:var(--c-weak);background:var(--c-weak-bg);border-color:var(--c-weak-line)}

/* evidence meter (5 dots) */
.emeter{display:inline-flex;align-items:center;gap:3px}
.emeter i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.emeter i.on{background:var(--em-c,var(--c-promising))}
.emeter .lab{font-size:.74rem;font-weight:600;color:var(--muted);margin-left:5px}

/* loudness / distress duo */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.duo .cell{border-radius:var(--r-sm);padding:8px 10px;border:1px solid var(--line);background:var(--surface-2)}
.duo .cell .k{font-size:.68rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.duo .cell .v{font-weight:600;font-size:.88rem}
.lv-none{color:var(--c-weak)}.lv-limited{color:var(--c-watch)}.lv-moderate{color:var(--c-promising)}.lv-strong{color:var(--c-strong)}

/* category cards */
.catcard{display:flex;flex-direction:column;gap:6px;border-radius:var(--r);padding:16px;border:1px solid var(--line);color:var(--text);background:var(--surface);box-shadow:var(--shadow);position:relative;overflow:hidden}
.catcard:hover{text-decoration:none;transform:translateY(-1px);transition:.15s}
.catcard .ico{font-size:1.5rem}
.catcard .count{font-size:.78rem;color:var(--muted)}
.catcard::after{content:"";position:absolute;inset:auto -30px -34px auto;width:96px;height:96px;border-radius:50%;background:var(--cat-c,var(--c-promising));opacity:.10}

/* ---------- chips / filters ---------- */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 16px}
.chip{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:999px;padding:6px 13px;font-size:.85rem;font-weight:500;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--grad-brand);border-color:transparent;color:#fff;font-weight:600}
.searchbar{display:flex;gap:8px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:9px 16px;box-shadow:var(--shadow)}
.searchbar input{flex:1;border:0;background:none;color:var(--text);font:inherit;outline:none;min-width:0}

/* ---------- snapshot (treatment page) ---------- */
.snapshot{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
@media(min-width:720px){.snapshot{grid-template-columns:repeat(4,1fr)}}
.snapshot .cell{background:var(--surface);padding:11px 13px}
.snapshot .k{font-size:.68rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.snapshot .v{font-weight:600;font-size:.92rem;margin-top:2px}

/* prose sections */
.prose{max-width:760px}
.prose h2{margin-top:1.6em}
details.rdetail{border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface-2);padding:0 14px;margin:10px 0}
details.rdetail summary{cursor:pointer;font-weight:600;padding:11px 0;color:var(--c-promising)}
details.rdetail[open]{padding-bottom:10px}

/* study table -> cards on mobile */
.study{border:1px solid var(--line);border-radius:var(--r-sm);padding:13px 15px;margin:10px 0;background:var(--surface)}
.study .t{font-weight:600}
.study .meta{font-size:.82rem;color:var(--muted);margin:2px 0 6px}
.study .res{font-size:.92rem}
.study .flags{margin-top:6px;display:flex;flex-wrap:wrap;gap:6px}

/* timeline */
.timeline{list-style:none;margin:10px 0;padding:0;border-left:2px solid var(--line)}
.timeline li{position:relative;padding:0 0 14px 18px}
.timeline li::before{content:"";position:absolute;left:-6px;top:7px;width:10px;height:10px;border-radius:50%;background:var(--grad-brand)}
.timeline b{font-family:var(--font-display)}

/* ---------- compare ---------- */
.cmp-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table.cmp{border-collapse:collapse;min-width:640px;width:100%}
table.cmp th,table.cmp td{padding:10px 13px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left;font-size:.9rem}
table.cmp th:first-child,table.cmp td:first-child{position:sticky;left:0;background:var(--surface);font-weight:600;min-width:130px;box-shadow:1px 0 0 var(--line)}
table.cmp thead th{font-family:var(--font-display)}

/* ---------- Phase 3: entry paths, plain-why, profile, search ---------- */
.paths{display:grid;gap:12px;grid-template-columns:1fr;margin:18px 0 6px}
@media(min-width:720px){.paths{grid-template-columns:1fr 1fr 1fr}}
.path-card{display:flex;flex-direction:column;gap:6px;padding:16px 18px;border-radius:var(--r);
  border:1px solid var(--line);background:var(--surface);color:var(--text);box-shadow:var(--shadow);
  border-left:4px solid var(--p-c,var(--c-promising))}
.path-card:hover{text-decoration:none;transform:translateY(-1px);transition:.15s}
.path-card b{font-family:var(--font-display);font-size:1.05rem}
.path-card .small{color:var(--muted)}
.whyline{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:8px 11px;margin:2px 0 0;font-size:.88rem}
.whyline strong{color:var(--c-promising)}
.who{margin:0;font-size:.8rem;color:var(--muted)}
.lvl-chip{cursor:pointer}
.imp{display:inline-flex;font-size:.72rem;font-weight:700;letter-spacing:.02em;border-radius:6px;padding:2px 8px;margin-right:6px}
.plain-block{border:1px solid var(--line);border-left:4px solid var(--c-promising);background:var(--surface);
  border-radius:var(--r-sm);padding:12px 16px;margin:14px 0;box-shadow:var(--shadow)}
.plain-block .k{font-size:.68rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.narrow-note{border:1px solid var(--c-watch-line);background:var(--c-watch-bg);border-radius:var(--r-sm);
  padding:10px 14px;margin:10px 0;font-size:.9rem}
.fmqs-box{border:1px dashed var(--c-promising-line);background:var(--c-promising-bg);border-radius:var(--r-sm);
  padding:12px 15px;margin:14px 0}
.fmqs-box .small{margin:6px 0 0}
.pform fieldset{border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;margin:0 0 14px;background:var(--surface)}
.pform legend{font-family:var(--font-display);font-weight:600;padding:0 8px}
.pform label{display:flex;gap:8px;align-items:center;padding:5px 0;font-size:.93rem}
.pform select,.pform input[type=text]{background:var(--surface-2);border:1px solid var(--line);color:var(--text);
  border-radius:8px;padding:7px 10px;font:inherit;max-width:100%}
.pform .row{display:flex;flex-wrap:wrap;gap:10px 22px}
.redflag{border:1px solid var(--c-watch-line);background:var(--c-watch-bg);border-radius:var(--r);padding:14px 16px;margin:14px 0}
.match-note{border:1px solid var(--c-promising-line);background:var(--c-promising-bg);border-radius:var(--r-sm);
  padding:9px 12px;margin:8px 0;font-size:.85rem}
.sr-row{display:flex;gap:10px;align-items:baseline;padding:10px 4px;border-bottom:1px solid var(--line)}
.sr-row .type{flex:none;font-size:.68rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  border:1px solid var(--line);border-radius:6px;padding:2px 7px;color:var(--muted);min-width:78px;text-align:center}
.followbtn{font-size:.8rem;padding:5px 12px}

/* ---------- Phase 4: evidence visuals (no chart library — CSS marks) ---------- */
.eprofile{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);
  padding:14px 16px;margin:14px 0;box-shadow:var(--shadow)}
.eprofile .k{font-size:.68rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.eprow{display:grid;grid-template-columns:minmax(96px,132px) 1fr minmax(74px,auto);gap:10px;align-items:center;padding:5px 0}
.eprow .lab{font-size:.83rem;color:var(--text)}
.eprow .val{font-size:.8rem;font-weight:600;color:var(--muted);text-align:right;white-space:nowrap}
.segbar{display:flex;gap:2px;height:10px;max-width:300px}
.segbar i{flex:1;border-radius:3px;background:var(--surface-2);border:1px solid var(--line)}
.segbar i.on{background:var(--seg-c,var(--c-promising));border-color:transparent}
.segbar.na i{background:repeating-linear-gradient(45deg,var(--surface-2),var(--surface-2) 3px,var(--line) 3px,var(--line) 5px)}
/* Conflicting replication: its own state (amber stripes), never a level on the positive scale */
.segbar.conflict i.cf{background:repeating-linear-gradient(135deg,var(--c-watch),var(--c-watch) 3px,var(--surface-2) 3px,var(--surface-2) 6px);border-color:var(--c-watch);opacity:.85}
.eprofile details{margin-top:8px}
.eprofile summary{cursor:pointer;font-size:.82rem;color:var(--c-promising);font-weight:600}

/* homepage distribution + generic count bars */
.dchart{display:grid;gap:8px;margin:10px 0}
.drow{display:grid;grid-template-columns:minmax(120px,190px) 1fr auto;gap:10px;align-items:center}
.drow .lab{font-size:.86rem}
.drow .n{font-size:.86rem;font-weight:700;font-variant-numeric:tabular-nums;min-width:2ch;text-align:right}
.dbar{height:14px;border-radius:4px;background:var(--surface-2);overflow:hidden}
.dbar i{display:block;height:100%;border-radius:4px;background:var(--d-c,var(--c-promising));min-width:3px}
a.drow{color:var(--text)} a.drow:hover{text-decoration:none;background:var(--surface-2);border-radius:8px}

/* timeline event types (presentation-only classification) */
.timeline li::before{background:var(--tl-c,var(--grad-brand))}
.tl-regulatory{--tl-c:var(--c-strong)} .tl-negative{--tl-c:var(--c-weak)}
.tl-study{--tl-c:var(--c-promising)} .tl-commercial{--tl-c:var(--c-emerging)} .tl-assessment{--tl-c:var(--c-watch)}
.tl-key{display:flex;flex-wrap:wrap;gap:10px;font-size:.74rem;color:var(--muted);margin:4px 0 8px}
.tl-key i{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:4px;vertical-align:middle}

/* ranking history strip */
.rankhist{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:8px 0}
.rankhist .step{background:var(--surface-2);border:1px solid var(--line);border-radius:8px;padding:4px 10px;font-size:.83rem;font-variant-numeric:tabular-nums}
.rankhist .arrow{color:var(--muted)}

/* ---------- misc ---------- */
.notice{border:1px solid var(--c-watch-line);background:var(--c-watch-bg);color:var(--text);border-radius:var(--r-sm);padding:11px 14px;font-size:.88rem}
.footer{margin-top:40px;border-top:1px solid var(--line);padding:24px 0 30px;color:var(--muted);font-size:.85rem}
.btn{display:inline-flex;align-items:center;gap:7px;border-radius:999px;padding:9px 18px;font-weight:600;font-size:.92rem;cursor:pointer;border:1px solid var(--line);background:var(--surface);color:var(--text)}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--grad-brand);color:#fff;border-color:transparent}
.btn-ghost{background:none;border-color:transparent;color:var(--c-promising)}
.watch-btn[aria-pressed="true"]{background:var(--c-promising-bg);border-color:var(--c-promising-line);color:var(--c-promising)}
.empty{padding:34px 10px;text-align:center;color:var(--muted)}
.updated-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--c-strong);margin-right:6px}
.tag{font-size:.72rem;border-radius:6px;padding:2px 7px;background:var(--surface-2);border:1px solid var(--line);color:var(--muted)}
.week-item{border-left:3px solid var(--w-c,var(--c-promising));padding:2px 0 2px 12px;margin:12px 0}
.week-item .t{font-weight:600}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}

/* crawlable breadcrumbs + static footer links (footer-links is folded into the JS footer when app.js runs) */
.crumbs{color:var(--muted)}
.crumbs a{color:var(--c-promising);text-decoration:none}
.footer-links{border-top:1px solid var(--line);margin-top:40px;padding:18px 0 90px;color:var(--muted)}
.footer-links a{color:var(--c-promising);text-decoration:none}