/* NutrifyYourGut — design system
   Palette drawn from a fermentation jar: brine, plum skin, kombucha, live culture. */

:root{
  --ink:#1B1420;          /* plum-black, all body text */
  --plum:#4A2545;         /* structural dark */
  --plum-soft:#6E4468;
  --brine:#EEF1EC;        /* cool mineral page ground */
  --brine-deep:#DFE5DB;
  --paper:#FFFFFF;
  --amber:#C9761B;        /* kombucha — the one warm accent */
  --amber-wash:#F6E7D3;
  --moss:#3F6B44;         /* live culture — success, growth */
  --moss-wash:#E2EBE0;
  --alarm:#A63A2B;
  --alarm-wash:#F5E0DC;
  --rule:rgba(27,20,32,.14);
  --rule-soft:rgba(27,20,32,.07);

  --display:"Fraunces",Georgia,serif;
  --body:"Public Sans",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;

  --r:4px;                /* deliberately tight — jars have square shoulders */
  --pad:clamp(20px,4vw,56px);
  --shadow:0 1px 2px rgba(27,20,32,.06),0 8px 24px -16px rgba(27,20,32,.3);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--brine);color:var(--ink);
  font:400 16px/1.6 var(--body);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--plum);text-underline-offset:3px}

h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.08;letter-spacing:-.02em;margin:0}
h1{font-size:clamp(2.4rem,6vw,4.5rem);font-variation-settings:"SOFT" 0,"WONK" 1,"opsz" 40}
h2{font-size:clamp(1.6rem,3.2vw,2.5rem)}
h3{font-size:1.15rem;letter-spacing:-.01em}
p{margin:0 0 1rem}

.eyebrow{
  font:500 .72rem/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;
  color:var(--plum-soft);margin:0 0 .9rem
}
.lede{font-size:clamp(1.05rem,1.8vw,1.3rem);color:rgba(27,20,32,.75);max-width:56ch}
.muted{color:rgba(27,20,32,.58)}
.small{font-size:.85rem}
.mono{font-family:var(--mono);font-size:.8rem;letter-spacing:.02em}

.wrap{max-width:1180px;margin:0 auto;padding:0 var(--pad)}
.narrow{max-width:720px}
.stack>*+*{margin-top:1rem}
.row{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap}
.spread{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
.grid{display:grid;gap:1.25rem}
@media(min-width:760px){
  .g2{grid-template-columns:1fr 1fr}
  .g3{grid-template-columns:repeat(3,1fr)}
}

/* ---------- site chrome ---------- */
.topbar{
  position:sticky;top:0;z-index:40;background:rgba(238,241,236,.88);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--rule-soft)
}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:66px}
.brand{font-family:var(--display);font-weight:600;font-size:1.15rem;letter-spacing:-.02em;
  text-decoration:none;color:var(--ink);display:flex;align-items:center;gap:.55rem}
.brand .dot{width:11px;height:11px;border-radius:50%;background:var(--amber);
  box-shadow:0 0 0 4px var(--amber-wash)}
.navlinks{display:flex;gap:1.4rem;align-items:center}
.navlinks a{font-size:.9rem;text-decoration:none;color:rgba(27,20,32,.72)}
.navlinks a:hover{color:var(--ink)}
@media(max-width:640px){.navlinks a:not(.btn){display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font:500 .93rem/1 var(--body);padding:.82rem 1.35rem;border-radius:var(--r);
  border:1px solid var(--plum);background:var(--plum);color:#fff;
  text-decoration:none;cursor:pointer;transition:.16s ease
}
.btn:hover{background:var(--ink);border-color:var(--ink)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.ghost{background:transparent;color:var(--plum)}
.btn.ghost:hover{background:rgba(74,37,69,.07);color:var(--plum)}
.btn.amber{background:var(--amber);border-color:var(--amber)}
.btn.amber:hover{background:#A9620F;border-color:#A9620F}
.btn.sm{padding:.5rem .85rem;font-size:.83rem}
.btn.block{width:100%}
:focus-visible{outline:2.5px solid var(--amber);outline-offset:2px}

/* ---------- surfaces ---------- */
.card{background:var(--paper);border:1px solid var(--rule-soft);border-radius:var(--r);
  padding:1.4rem;box-shadow:var(--shadow)}
.card.tight{padding:1rem}
.panel{background:var(--paper);border:1px solid var(--rule-soft);border-radius:var(--r)}

.tag{display:inline-flex;align-items:center;gap:.35rem;font:500 .7rem/1 var(--mono);
  letter-spacing:.08em;text-transform:uppercase;padding:.4rem .55rem;border-radius:2px;
  background:var(--brine-deep);color:var(--plum)}
.tag.warn{background:var(--amber-wash);color:#8A4E08}
.tag.bad{background:var(--alarm-wash);color:var(--alarm)}
.tag.good{background:var(--moss-wash);color:var(--moss)}

/* ---------- forms ---------- */
label{display:block;font-size:.83rem;font-weight:500;margin-bottom:.35rem;color:rgba(27,20,32,.8)}
input,select,textarea{
  width:100%;font:400 .95rem/1.4 var(--body);color:var(--ink);
  padding:.72rem .8rem;border:1px solid var(--rule);border-radius:var(--r);
  background:var(--paper)
}
input:focus,select:focus,textarea:focus{border-color:var(--plum);outline:none;
  box-shadow:0 0 0 3px rgba(74,37,69,.1)}
textarea{min-height:96px;resize:vertical}
.field+.field{margin-top:.95rem}
.check{display:flex;gap:.6rem;align-items:flex-start;font-size:.88rem;line-height:1.45}
.check input{width:auto;margin-top:.2rem;flex:none}

/* ---------- SIGNATURE: the Bristol strip ----------
   Seven cells. Height = symptom load, fill = stool type.
   The whole week's gut readable in one glance. */
.strip{display:flex;gap:3px;align-items:flex-end;height:76px}
.strip .cell{
  flex:1;min-width:0;border-radius:2px 2px 0 0;position:relative;
  background:var(--brine-deep);transition:.2s ease
}
.strip .cell[data-b="1"],.strip .cell[data-b="2"]{background:#8C5A2B}  /* hard */
.strip .cell[data-b="3"],.strip .cell[data-b="4"]{background:var(--moss)} /* ideal */
.strip .cell[data-b="5"]{background:#B8912F}
.strip .cell[data-b="6"],.strip .cell[data-b="7"]{background:var(--alarm)} /* loose */
.strip .cell.empty{background:repeating-linear-gradient(45deg,
  var(--brine-deep) 0 4px,transparent 4px 8px);height:12px!important}
.strip-legend{display:flex;justify-content:space-between;margin-top:.45rem;
  font:.68rem/1 var(--mono);color:rgba(27,20,32,.5);letter-spacing:.05em}

/* score dial */
.dial{--v:0;width:132px;height:132px;border-radius:50%;flex:none;
  background:conic-gradient(var(--amber) calc(var(--v)*1%),var(--brine-deep) 0);
  display:grid;place-items:center;position:relative}
.dial::after{content:"";position:absolute;inset:11px;border-radius:50%;background:var(--paper)}
.dial b{position:relative;z-index:1;font-family:var(--display);font-size:2.1rem;font-weight:600}

/* ---------- assessment ---------- */
.q{border-top:1px solid var(--rule-soft);padding:1.4rem 0}
.q:first-of-type{border-top:0}
.q h3{margin-bottom:.9rem}
.scale{display:grid;grid-template-columns:repeat(5,1fr);gap:.4rem}
.scale button{
  padding:.75rem .3rem;border:1px solid var(--rule);background:var(--paper);
  border-radius:var(--r);cursor:pointer;font:500 .78rem/1.3 var(--body);color:rgba(27,20,32,.7)
}
.scale button[aria-pressed="true"]{background:var(--plum);color:#fff;border-color:var(--plum)}
.scale button:hover{border-color:var(--plum)}
@media(max-width:520px){.scale{grid-template-columns:repeat(5,1fr)}
  .scale button{font-size:.68rem;padding:.7rem .15rem}}

.progress{height:3px;background:var(--brine-deep);border-radius:2px;overflow:hidden}
.progress i{display:block;height:100%;background:var(--amber);transition:width .3s ease}

/* ---------- tables / lists ---------- */
table{width:100%;border-collapse:collapse;font-size:.9rem}
th{text-align:left;font:500 .7rem/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;
  color:rgba(27,20,32,.5);padding:.7rem .6rem;border-bottom:1px solid var(--rule)}
td{padding:.85rem .6rem;border-bottom:1px solid var(--rule-soft);vertical-align:top}
tr:last-child td{border-bottom:0}
.clickable{cursor:pointer}
.clickable:hover{background:var(--brine)}

.entry{border-left:2px solid var(--rule);padding:.15rem 0 .15rem .85rem;margin-bottom:.9rem}
.entry.meal{border-color:var(--amber)}
.entry.stool{border-color:var(--moss)}
.entry.symptom{border-color:var(--alarm)}

.empty{padding:2.6rem 1rem;text-align:center;color:rgba(27,20,32,.55)}
.empty h3{margin-bottom:.4rem;color:var(--ink)}

/* ---------- app shell ---------- */
.shell{display:grid;min-height:100vh}
@media(min-width:900px){.shell{grid-template-columns:250px 1fr}}
.side{background:var(--plum);color:rgba(255,255,255,.75);padding:1.6rem 1.2rem}
.side .brand{color:#fff}
.side nav{margin-top:1.8rem;display:flex;flex-direction:column;gap:.15rem}
.side nav a{padding:.6rem .7rem;border-radius:var(--r);text-decoration:none;
  color:rgba(255,255,255,.72);font-size:.92rem}
.side nav a:hover{background:rgba(255,255,255,.09);color:#fff}
.side nav a.on{background:rgba(255,255,255,.15);color:#fff;font-weight:500}
.main{padding:var(--pad);max-width:100%;overflow-x:hidden}
@media(max-width:899px){.side{padding:1rem}.side nav{flex-direction:row;overflow-x:auto;margin-top:1rem}}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);
  background:var(--ink);color:#fff;padding:.8rem 1.15rem;border-radius:var(--r);
  font-size:.9rem;z-index:99;box-shadow:var(--shadow);max-width:90vw}
.hide{display:none!important}

@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}