/* ============================================================
   Shelf — medical stock control
   Visual system: printed pharmacy shelf labels.
   Archivo for interface, IBM Plex Mono for anything a label
   would have been stamped with (counts, lots, dates).
   ============================================================ */

:root{
  --paper:#F6F7F4;
  --card:#FFFFFF;
  --ink:#14231F;
  --ink-2:#5C6B66;
  --ink-3:#8A9691;
  --line:#DFE4E0;
  --pine:#1F5E4F;
  --pine-d:#16473B;
  --mint:#E4EFE9;
  --amber:#9C6206;
  --amber-bg:#FAEDD8;
  --red:#A62B21;
  --red-bg:#F8E4E1;
  --r:14px;
  --sp:16px;
  --shadow:0 1px 2px rgba(20,35,31,.06), 0 8px 24px -14px rgba(20,35,31,.28);
  --safe-b:env(safe-area-inset-bottom, 0px);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.45;
  -webkit-font-smoothing:antialiased;
  -webkit-text-size-adjust:100%;
}
[hidden]{display:none !important}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}

/* ---------- type helpers ---------- */
.stamp{
  font-family:"IBM Plex Mono",ui-monospace,monospace;
  font-size:10px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-3);
}
.sec-title{
  font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-2);margin:22px 0 10px;
}
.opt{font-weight:400;color:var(--ink-3);text-transform:none;letter-spacing:0}

/* ---------- centred views ---------- */
.center-view{
  min-height:100dvh;display:flex;align-items:center;justify-content:center;
  padding:24px 18px calc(24px + var(--safe-b));
}
.boot-mark{
  font-family:"IBM Plex Mono",monospace;font-weight:600;letter-spacing:.4em;
  color:var(--ink-3);animation:pulse 1.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}

.auth-card{
  width:100%;max-width:400px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:26px 22px 22px;box-shadow:var(--shadow);
}
.label-strip{display:flex;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px dashed var(--line)}
.auth-title{font-size:30px;font-weight:700;letter-spacing:-.02em;margin:18px 0 6px}
.auth-sub{color:var(--ink-2);margin:0 0 20px;font-size:14px}
.fine{color:var(--ink-3);font-size:12px;text-align:center;margin:14px 0 0}

/* ---------- segmented control ---------- */
.seg{display:flex;gap:4px;background:var(--mint);border-radius:10px;padding:4px;margin-bottom:18px}
.seg-sm{margin-bottom:0}
.seg-btn{
  flex:1;border:0;background:transparent;border-radius:7px;padding:8px 10px;
  font-family:inherit;font-size:13px;font-weight:600;color:var(--pine-d);cursor:pointer;
}
.seg-btn.is-on{background:var(--card);box-shadow:0 1px 2px rgba(20,35,31,.12)}

/* ---------- fields ---------- */
.field{margin-bottom:14px;display:flex;flex-direction:column}
.field label{
  font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-2);margin-bottom:6px;
}
input,select,.search{
  font-family:inherit;font-size:16px;color:var(--ink);background:var(--card);
  border:1px solid var(--line);border-radius:10px;padding:11px 12px;width:100%;
  appearance:none;
}
input[type=date]{min-height:44px}
input:focus,select:focus,.search:focus{outline:2px solid var(--pine);outline-offset:1px;border-color:transparent}
::placeholder{color:var(--ink-3)}
select{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235C6B66' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>");background-repeat:no-repeat;background-position:right 10px center;background-size:18px;padding-right:34px}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.grid2 .span2{grid-column:1 / -1}

/* ---------- buttons ---------- */
.btn{
  font-family:inherit;font-size:14px;font-weight:600;border-radius:10px;
  padding:12px 18px;border:1px solid transparent;cursor:pointer;
  transition:transform .06s ease, background .15s ease;
}
.btn:active{transform:translateY(1px)}
.btn-block{width:100%}
.btn-sm{padding:8px 12px;font-size:13px}
.btn-primary{background:var(--pine);color:#fff}
.btn-primary:hover{background:var(--pine-d)}
.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--line)}
.btn-ghost:hover{background:var(--mint);color:var(--pine-d)}
.btn-danger{background:transparent;color:var(--red);border-color:var(--red-bg);margin-right:auto}
.btn-danger:hover{background:var(--red-bg)}
.icon-btn{
  background:transparent;border:1px solid transparent;border-radius:10px;padding:8px;
  color:var(--ink-2);cursor:pointer;display:grid;place-items:center;
}
.icon-btn:hover{background:var(--mint);color:var(--pine-d)}

/* keyboard focus, everywhere */
.btn:focus-visible,.tab:focus-visible,.seg-btn:focus-visible,.icon-btn:focus-visible,
.step-btn:focus-visible,.fab:focus-visible{outline:2px solid var(--pine);outline-offset:2px}

.msg{font-size:13px;margin:0 0 12px;padding:10px 12px;border-radius:9px;background:var(--red-bg);color:var(--red)}
.msg.ok{background:var(--mint);color:var(--pine-d)}

/* ---------- app frame ---------- */
.topbar{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;
  padding:10px 14px;background:rgba(246,247,244,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;flex-direction:column;line-height:1.1;margin-right:auto}
.brand-mark{font-family:"IBM Plex Mono",monospace;font-weight:600;letter-spacing:.28em;font-size:14px}
.brand-sub{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--pine)}

#main{max-width:760px;margin:0 auto;padding:4px 14px calc(96px + var(--safe-b))}

/* ---------- tabs ---------- */
.tabs{display:flex}
.tabs-top{display:none}
.tabs-bottom{
  position:fixed;left:0;right:0;bottom:0;z-index:30;
  background:var(--card);border-top:1px solid var(--line);
  padding:6px 6px calc(6px + var(--safe-b));
}
.tab{
  flex:1;border:0;background:transparent;cursor:pointer;font-family:inherit;
  display:flex;flex-direction:column;align-items:center;gap:3px;padding:7px 4px;
  color:var(--ink-3);border-radius:10px;
}
.tab span{font-size:10px;font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.tab.is-on{color:var(--pine)}
.tabs-bottom .tab.is-on{background:var(--mint)}

/* ---------- stat row ---------- */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px}
.stat{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:12px 10px;text-align:left;
}
.stat b{display:block;font-family:"IBM Plex Mono",monospace;font-size:24px;font-weight:600;letter-spacing:-.02em}
.stat small{font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.stat.warn b{color:var(--amber)}
.stat.bad b{color:var(--red)}

/* ---------- toolbar ---------- */
.toolbar{display:flex;gap:8px;align-items:center;margin:14px 0 4px}
.search{flex:1;font-size:16px;padding:10px 12px}
.select-inline{width:auto;flex:0 0 auto;font-size:16px;padding:10px 32px 10px 10px}

/* ---------- the shelf label (signature) ---------- */
.list{display:flex;flex-direction:column;gap:10px;margin-top:10px}

.item{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:13px 14px 0 20px;overflow:hidden;box-shadow:var(--shadow);
}
.item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--pine)}
.item.is-low::before{background:var(--amber)}
.item.is-bad::before{background:var(--red)}

.item-head{display:flex;align-items:flex-start;gap:12px}
.item-name{font-size:16px;font-weight:600;letter-spacing:-.01em;margin:0}
.item-meta{font-size:12px;color:var(--ink-2);margin:2px 0 0}
.item-qty{margin-left:auto;text-align:right;flex:0 0 auto}
.item-qty b{display:block;font-family:"IBM Plex Mono",monospace;font-size:26px;font-weight:600;line-height:1;letter-spacing:-.03em}
.item-qty small{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.item.is-low .item-qty b{color:var(--amber)}
.item.is-bad .item-qty b{color:var(--red)}

.flags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.flag{
  font-family:"IBM Plex Mono",monospace;font-size:10px;font-weight:500;letter-spacing:.08em;
  text-transform:uppercase;padding:3px 7px;border-radius:5px;background:var(--mint);color:var(--pine-d);
}
.flag.warn{background:var(--amber-bg);color:var(--amber)}
.flag.bad{background:var(--red-bg);color:var(--red)}

/* the tear-off strip at the bottom of a printed label */
.item-strip{
  display:flex;flex-wrap:wrap;gap:4px 16px;margin:12px -14px 0 -20px;padding:9px 14px 9px 20px;
  border-top:1px dashed var(--line);background:linear-gradient(var(--paper),var(--paper));
}
.item-strip span{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--ink-2);white-space:nowrap}
.item-strip span i{font-style:normal;color:var(--ink-3);letter-spacing:.08em}
.item-strip .exp-warn{color:var(--amber);font-weight:600}
.item-strip .exp-bad{color:var(--red);font-weight:600}

.item-acts{display:flex;gap:8px;margin:12px -14px 0 -20px;padding:10px 14px 12px 20px;border-top:1px solid var(--line)}
.item-acts .btn{flex:1;padding:10px 12px;font-size:13px}

/* ---------- log rows ---------- */
.row{
  background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;
  display:flex;gap:12px;align-items:flex-start;
}
.row-delta{
  font-family:"IBM Plex Mono",monospace;font-weight:600;font-size:15px;flex:0 0 auto;
  min-width:44px;text-align:right;
}
.row-delta.out{color:var(--red)}
.row-delta.in{color:var(--pine)}
.row-main{flex:1;min-width:0}
.row-main h3{font-size:14px;font-weight:600;margin:0}
.row-main p{font-size:12px;color:var(--ink-2);margin:2px 0 0;overflow-wrap:anywhere}
.row-main time{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.06em;color:var(--ink-3);text-transform:uppercase}

/* ---------- people ---------- */
.person{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:13px 14px}
.person-top{display:flex;align-items:center;gap:10px}
.person-top h3{font-size:15px;font-weight:600;margin:0}
.person-top p{font-size:12px;color:var(--ink-2);margin:1px 0 0;overflow-wrap:anywhere}
.person-ctl{display:flex;gap:8px;margin-top:11px}
.person-ctl select{font-size:16px;padding:9px 32px 9px 10px}

/* ---------- empty ---------- */
.empty{
  border:1px dashed var(--line);border-radius:var(--r);padding:34px 20px;text-align:center;
  color:var(--ink-2);font-size:14px;background:var(--card);
}
.empty b{display:block;font-size:15px;color:var(--ink);margin-bottom:4px}

/* ---------- fab ---------- */
.fab{
  position:fixed;right:16px;bottom:calc(74px + var(--safe-b));z-index:25;
  display:flex;align-items:center;gap:8px;border:0;cursor:pointer;
  background:var(--pine);color:#fff;font-family:inherit;font-size:14px;font-weight:600;
  padding:13px 18px;border-radius:999px;box-shadow:0 10px 24px -8px rgba(31,94,79,.6);
}
.fab:active{transform:translateY(1px)}

/* ---------- sheets ---------- */
.scrim{position:fixed;inset:0;background:rgba(20,35,31,.42);z-index:40;animation:fade .18s ease}
@keyframes fade{from{opacity:0}}
.sheet{
  position:fixed;left:0;right:0;bottom:0;z-index:50;max-height:92dvh;overflow:auto;
  background:var(--card);border-radius:20px 20px 0 0;
  padding:8px 18px calc(18px + var(--safe-b));
  animation:rise .22s cubic-bezier(.2,.8,.3,1);
}
@keyframes rise{from{transform:translateY(100%)}}
.sheet-grab{width:38px;height:4px;border-radius:99px;background:var(--line);margin:4px auto 14px}
.sheet-title{font-size:20px;font-weight:700;letter-spacing:-.01em;margin:0 0 4px}
.sheet-item{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--ink-2);margin:0 0 18px}
.sheet-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}
.sheet-actions .btn{flex:0 0 auto}

.stepper{display:flex;align-items:center;gap:12px;margin:0 0 18px}
.step-btn{
  width:52px;height:52px;flex:0 0 auto;border:1px solid var(--line);background:var(--card);
  border-radius:12px;font-size:24px;color:var(--pine);cursor:pointer;font-family:inherit;
}
.step-btn:active{background:var(--mint)}
.step-val{flex:1;text-align:center}
.step-val input{
  font-family:"IBM Plex Mono",monospace;font-size:34px;font-weight:600;text-align:center;
  border:0;padding:0;background:transparent;letter-spacing:-.02em;
}
.step-val input:focus{outline:0}
.step-val span{display:block;font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;transform:translateX(-50%);bottom:calc(88px + var(--safe-b));z-index:60;
  background:var(--ink);color:#fff;font-size:13.5px;font-weight:500;
  padding:11px 18px;border-radius:999px;box-shadow:var(--shadow);max-width:88vw;text-align:center;
}

/* ---------- desktop ---------- */
@media (min-width:760px){
  .tabs-bottom{display:none}
  .tabs-top{display:flex;gap:4px}
  .tabs-top .tab{flex:0 0 auto;flex-direction:row;gap:7px;padding:8px 13px}
  .tabs-top .tab.is-on{background:var(--mint)}
  .tabs-top .tab span{font-size:12px;letter-spacing:.04em;text-transform:none}
  #main{padding-bottom:64px}
  .fab{bottom:26px;right:calc(50% - 380px + 10px)}
  .stat-row{gap:12px}
  .sheet{
    left:50%;bottom:auto;top:50%;transform:translate(-50%,-50%);
    width:min(520px,92vw);border-radius:18px;padding:12px 24px 24px;animation:fade .18s ease;
  }
  .sheet-grab{display:none}
}
@media (max-width:400px){
  .fab span{display:none}
  .fab{padding:15px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* ---------- offline banner ---------- */
.offline{
  max-width:760px;margin:10px auto 0;padding:11px 14px;
  background:var(--amber-bg);color:var(--amber);
  border:1px solid rgba(156,98,6,.22);border-radius:10px;
  font-size:13px;line-height:1.4;
}
@media (min-width:760px){ .offline{margin-top:14px} }