:root{
  --bg:#f6f7f9; --surface:#ffffff; --surface-2:#f1f3f6;
  --txt:#101828; --muted:#667085; --line:#e6e8ec;
  --accent:#4f46e5; --accent-d:#4338ca; --accent-soft:#eef2ff;
  --warn:#b45309; --warn-soft:#fef3e6; --ok:#067647; --ok-soft:#e7f6ee;
  --danger:#b42318; --danger-soft:#fee4e2;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 1px 3px rgba(16,24,40,.06);
  --shadow-lg:0 8px 24px rgba(16,24,40,.12);
  --r:14px; --sidebar:248px;
  --thumb-svg:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='22' fill='none' stroke='%2398a2b3' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'><path d='M21 16V8a2 2 0 0 0-1-1.7l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.7l7 4a2 2 0 0 0 2 0l7-4A2 2 0 0 0 21 16z'/><path d='M3.3 7 12 12l8.7-5M12 22V12'/></svg>");
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--txt);
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  line-height:1.5;letter-spacing:-.01em}
a{color:var(--accent);text-decoration:none}
h1{font-size:1.4rem;font-weight:650;margin:.1em 0 .25em;letter-spacing:-.02em}
h2{font-size:1.05rem;font-weight:600;margin:1.5em 0 .6em;letter-spacing:-.01em}
.muted{color:var(--muted)}
.mono{font-family:ui-monospace,"SF Mono",monospace;font-size:.78rem;word-break:break-all;color:var(--muted)}
.ic{width:20px;height:20px;flex:0 0 auto}
.page-sub{color:var(--muted);margin:0 0 1.2em}

/* ============ APP SHELL ============ */
.app{display:flex;min-height:100vh}

/* sidebar (desktop) */
.sidebar{display:none;flex-direction:column;width:var(--sidebar);flex:0 0 var(--sidebar);
  position:fixed;inset:0 auto 0 0;height:100vh;background:var(--surface);
  border-right:1px solid var(--line);padding:1.1rem .8rem;z-index:30}
.logo{display:flex;align-items:center;gap:.6rem;padding:.4rem .5rem .9rem;color:var(--txt)}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:9px;background:var(--accent);color:#fff;font-weight:700;font-size:1.05rem}
.logo-mark.sm{width:26px;height:26px;font-size:.85rem;border-radius:7px}
.logo-txt{font-weight:650;font-size:1.05rem;letter-spacing:-.02em}
.side-nav{display:flex;flex-direction:column;gap:.2rem;margin-top:.4rem}
.side-nav a{display:flex;align-items:center;gap:.7rem;padding:.62rem .65rem;border-radius:10px;
  color:var(--muted);font-weight:550;font-size:.95rem;transition:.13s}
.side-nav a:hover{background:var(--surface-2);color:var(--txt)}
.side-nav a.active{background:var(--accent-soft);color:var(--accent-d)}
.side-nav a.active .ic{stroke:var(--accent)}
.side-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:.5rem;padding:.6rem .5rem;border-top:1px solid var(--line)}
.user{display:flex;align-items:center;gap:.55rem;min-width:0}
.avatar{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;
  border-radius:50%;background:var(--surface-2);color:var(--txt);font-weight:650;font-size:.85rem;flex:0 0 auto}
.user-name{font-weight:550;font-size:.9rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-logout{display:inline-flex;color:var(--muted);padding:.35rem;border-radius:8px}
.side-logout:hover{background:var(--surface-2);color:var(--danger)}

.main-area{flex:1;min-width:0;display:flex;flex-direction:column}

/* topbar (mobile) */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;
  justify-content:space-between;gap:1rem;padding:.7rem 1rem;
  background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:650;color:var(--txt);
  letter-spacing:-.02em;font-size:1.02rem}
.top-logout{color:var(--muted);display:inline-flex;padding:.3rem}

.container{max-width:880px;width:100%;margin:0 auto;padding:1.4rem 1.1rem 6.5rem}

/* bottom nav (mobile) */
.bottomnav{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;
  justify-content:space-around;align-items:flex-end;
  background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(10px);
  border-top:1px solid var(--line);padding:.35rem .4rem calc(.35rem + env(safe-area-inset-bottom))}
.bottomnav a{display:flex;flex-direction:column;align-items:center;gap:.15rem;
  flex:1;padding:.4rem 0;color:var(--muted);font-size:.68rem;font-weight:550}
.bottomnav a.active{color:var(--accent)}
.bottomnav a.active .ic{stroke:var(--accent)}
.scan-tab{position:relative}
.scan-circle{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;
  margin-top:-22px;border-radius:50%;background:var(--accent);color:#fff;
  box-shadow:var(--shadow-lg);border:3px solid var(--surface)}
.scan-circle .ic{width:22px;height:22px;stroke:#fff}

/* ============ DESKTOP ============ */
@media (min-width:880px){
  .sidebar{display:flex}
  .main-area{margin-left:var(--sidebar)}
  .topbar,.bottomnav{display:none}
  .container{padding:2rem 2rem 3rem}
}

/* ============ COMPONENTS ============ */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:1.1rem;margin:.9rem 0;box-shadow:var(--shadow)}
.grid{display:grid;gap:.8rem}
.stats{grid-template-columns:repeat(2,1fr)}
@media (min-width:880px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{display:flex;flex-direction:column;gap:.15rem;padding:1.1rem;color:var(--txt)}
.stat .num{font-size:1.7rem;font-weight:680;letter-spacing:-.03em}
.stat .num.warn{color:var(--warn)}
.stat .lbl{color:var(--muted);font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em}

.actions{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.1rem 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;
  background:var(--surface);color:var(--txt);border:1px solid var(--line);
  padding:.65rem 1.05rem;border-radius:11px;font-size:.95rem;font-weight:550;
  cursor:pointer;transition:.15s;box-shadow:var(--shadow)}
.btn:hover{background:var(--surface-2)}
.btn .ic{width:18px;height:18px}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-d)}
.btn.primary .ic{stroke:#fff}
.btn.big{width:100%;padding:.9rem;font-size:1rem}
@media (min-width:880px){.btn.big{width:auto}}

.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}
.list.compact{gap:.4rem}
.list-item>a,.list-item>span{display:flex;align-items:center;gap:.8rem;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:.7rem .85rem;color:var(--txt);box-shadow:var(--shadow);transition:.15s}
.list-item>a:hover{border-color:#d3d6db;transform:translateY(-1px)}
.li-main{display:flex;flex-direction:column;flex:1;min-width:0;gap:.1rem}
.li-main strong{font-weight:570;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.li-main small{font-size:.8rem}
.thumb{width:48px;height:48px;border-radius:10px;object-fit:cover;background:var(--surface-2);
  flex:0 0 auto;border:1px solid var(--line)}
.thumb.ph{background-color:var(--surface-2);background-image:var(--thumb-svg);
  background-repeat:no-repeat;background-position:center}

.badge{background:var(--surface-2);color:var(--txt);border-radius:999px;
  padding:.28rem .65rem;font-size:.78rem;font-weight:550;white-space:nowrap}
.badge.warn{background:var(--warn-soft);color:var(--warn)}
.status-importada{background:var(--ok-soft);color:var(--ok)}
.status-parcial{background:var(--warn-soft);color:var(--warn)}
.status-erro{background:var(--danger-soft);color:var(--danger)}
.status-manual{background:var(--surface-2);color:var(--muted)}

.form label{display:flex;flex-direction:column;gap:.35rem;margin:.7rem 0;
  font-size:.82rem;font-weight:550;color:var(--muted)}
.form .row{display:flex;gap:.7rem}.form .row label{flex:1}
input,select,textarea{background:var(--surface);color:var(--txt);
  border:1px solid var(--line);border-radius:10px;padding:.7rem .8rem;font-size:1rem;
  width:100%;font-family:inherit;transition:.15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-soft)}
.search{display:flex;gap:.5rem;margin:.7rem 0}.search input{flex:1}

/* login */
.login-main{display:flex;align-items:center;justify-content:center;
  min-height:100vh;min-height:100dvh;padding:1.2rem;
  padding-top:calc(1.2rem + env(safe-area-inset-top));
  padding-bottom:calc(1.2rem + env(safe-area-inset-bottom))}
.login-wrap{width:100%;display:flex;justify-content:center}
.login-card{max-width:380px;width:100%;text-align:center;padding:1.6rem}
.login-brand{display:flex;justify-content:center;margin-bottom:.4rem}
.login-card .logo-mark{width:46px;height:46px;font-size:1.4rem;border-radius:12px}
.login-card h1{margin:.1em 0;font-size:1.5rem}
.login-card .form{margin-top:1rem;text-align:left}

.alert{border-radius:10px;padding:.75rem .9rem;margin:.7rem 0;font-size:.9rem}
.alert.erro{background:var(--danger-soft);color:var(--danger)}
.alert.info{background:var(--accent-soft);color:var(--accent-d)}

#reader{position:relative;width:100%;max-width:440px;margin:.6rem auto;border-radius:var(--r);
  overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#000;aspect-ratio:4/3}
#reader video{width:100%;height:100%;object-fit:cover;display:block}
.scan-overlay{position:absolute;inset:0;pointer-events:none;display:flex;
  align-items:center;justify-content:center}
.scan-frame{position:relative;width:84%;height:50%;border:2px solid rgba(255,255,255,.85);
  border-radius:12px;box-shadow:0 0 0 100vmax rgba(0,0,0,.28)}
.scan-line{position:absolute;left:8px;right:8px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,transparent,#22d3ee,#22d3ee,transparent);
  box-shadow:0 0 8px #22d3ee;animation:scanmove 1.5s ease-in-out infinite}
@keyframes scanmove{0%{top:6%}50%{top:90%}100%{top:6%}}
@media (prefers-reduced-motion:reduce){.scan-line{animation:none;top:50%}}
.scan-status{text-align:center}
.prev-head{display:flex;gap:.4rem;flex-wrap:wrap}

.prod-head{display:flex;gap:1.1rem;align-items:center;margin-bottom:.4rem}
.prod-foto{width:96px;height:96px;border-radius:16px;object-fit:cover;flex:0 0 auto;
  background-color:var(--surface-2);border:1px solid var(--line)}
.prod-foto.ph{background-image:var(--thumb-svg);background-repeat:no-repeat;
  background-position:center;background-size:34px}
.prod-head h1{margin:0 0 .15rem}
.saldo-big{font-size:1.55rem;font-weight:680;margin:.25rem 0;letter-spacing:-.02em}
.saldo-big.warn{color:var(--warn)}
.preview{max-width:150px;border-radius:10px;margin:.3rem 0;border:1px solid var(--line)}

.mtag{font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;
  padding:.22rem .5rem;border-radius:6px;flex:0 0 auto}
.mtag.entrada{background:var(--ok-soft);color:var(--ok)}
.mtag.saida{background:var(--danger-soft);color:var(--danger)}
.mtag.ajuste{background:var(--accent-soft);color:var(--accent-d)}
details summary{cursor:pointer;font-weight:600;padding:.2rem 0;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary::before{content:"+ ";color:var(--muted)}
details[open] summary::before{content:"– "}