:root{
  --g:#47E09A;--r:#F4554A;--y:#FFB84D;--b:#4DA6FF;
  --bg:#0a0a0a;--card:#111;--card2:#1a1a1a;--border:#222;--border2:#333;
  --fg:#fff;--muted:#888;
  --nav-h:83px; /* 49px content + 34px home indicator clearance */
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent;user-select:none}
html,body{width:100%;height:100%;overflow:hidden;position:fixed;inset:0;background:#0a0a0a;font-family:'DM Sans',sans-serif;color:var(--fg)}
.view{display:none;position:absolute;inset:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;scroll-behavior:smooth}
.view.active{display:block}

/* SCANNER */
video#feed{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
canvas#scan{display:none}
.top-bar{position:fixed;top:0;left:0;right:0;z-index:10;background:rgba(0,0,0,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:12px 18px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px}
.brand-icon{width:34px;height:34px;border-radius:10px;background:var(--g);display:flex;align-items:center;justify-content:center}
.brand-icon svg{width:18px;height:18px}
.brand-name{font-size:16px;font-weight:700;color:#fff;line-height:1.1}
.brand-sub{font-size:10px;font-weight:500;color:rgba(255,255,255,.5);letter-spacing:.3px}
.live{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.08);padding:5px 10px 5px 8px;border-radius:20px}
.live-dot{width:6px;height:6px;border-radius:50%;background:var(--g);animation:pulse 2s infinite}
@keyframes pulse{0%,80%,100%{opacity:1}90%{opacity:.3}}
.live span{font-size:10px;font-weight:700;color:var(--g);letter-spacing:1px}
.vf{position:absolute;inset:0;z-index:2;display:flex;align-items:center;justify-content:center;pointer-events:none}
.vf-box{width:68vmin;height:68vmin;max-width:270px;max-height:270px;position:relative}
.c{position:absolute;width:26px;height:26px}.c svg{width:100%;height:100%;display:block}
.c.tl{top:0;left:0}.c.tr{top:0;right:0;transform:rotate(90deg)}.c.bl{bottom:0;left:0;transform:rotate(-90deg)}.c.br{bottom:0;right:0;transform:rotate(180deg)}
.line{position:absolute;left:10px;right:10px;height:1px;top:0;opacity:0;background:var(--g);animation:sweep 2.4s ease-in-out infinite}
@keyframes sweep{0%{top:2px;opacity:0}6%{opacity:.5}48%{top:calc(100% - 3px);opacity:.5}55%{opacity:0}100%{top:2px;opacity:0}}

/* PAGE HEADER */
.page-header{padding:16px 20px 0;display:flex;justify-content:space-between;align-items:center}
.page-title{font-size:26px;font-weight:700}
.page-actions{display:flex;gap:8px}
.btn-primary{background:var(--g);color:#000;padding:10px 16px;border:none;border-radius:10px;font-weight:700;font-family:'DM Sans';cursor:pointer;font-size:13px;display:flex;align-items:center;gap:6px;transition:transform .15s}
.btn-primary:active{transform:scale(.95)}
.btn-secondary{background:var(--card2);color:var(--fg);border:1px solid var(--border2);padding:10px 14px;border-radius:10px;font-weight:600;font-family:'DM Sans';cursor:pointer;font-size:13px;transition:transform .15s}
.btn-secondary:active{transform:scale(.95)}
.btn-danger{background:rgba(244,85,74,.12);color:var(--r);border:1px solid rgba(244,85,74,.3);padding:10px 14px;border-radius:10px;font-weight:700;font-family:'DM Sans';cursor:pointer;font-size:13px}
.btn-danger:active{transform:scale(.95)}

/* STATS ROW */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:16px 20px}
.stat{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:12px 8px;text-align:center}
.stat-val{font-size:20px;font-weight:700;color:var(--g)}
.stat-val.warn{color:var(--y)}.stat-val.info{color:var(--b)}
.stat-label{font-size:9px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-top:4px}

/* SEARCH */
.search-wrap{padding:0 20px 12px;position:relative}
.search-input{width:100%;padding:13px 14px 13px 42px;background:var(--card);border:1px solid var(--border);border-radius:12px;color:var(--fg);font-size:14px;outline:none;font-family:'DM Sans';transition:border-color .2s}
.search-input:focus{border-color:var(--g)}
.search-wrap svg{position:absolute;left:34px;top:50%;transform:translateY(-50%);width:18px;height:18px;stroke:var(--muted);pointer-events:none}

/* SORT BAR */
.sort-bar{display:flex;gap:6px;padding:0 20px 10px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.sort-bar::-webkit-scrollbar{display:none}
.sort-btn{padding:6px 12px;border-radius:8px;font-size:11px;font-weight:600;background:var(--card);border:1px solid var(--border);color:var(--muted);white-space:nowrap;cursor:pointer;transition:all .2s}
.sort-btn.active{background:rgba(77,166,255,.12);color:var(--b);border-color:rgba(77,166,255,.3)}

/* FILTER TABS */
.filter-tabs{display:flex;gap:8px;padding:0 20px 10px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.filter-tabs::-webkit-scrollbar{display:none}
.ftab{padding:7px 14px;border-radius:20px;font-size:12px;font-weight:600;background:var(--card);border:1px solid var(--border);color:var(--muted);white-space:nowrap;cursor:pointer;transition:all .2s}
.ftab.active{background:var(--g);color:#000;border-color:var(--g)}
.ftab.cat{border-radius:8px;font-size:11px;padding:5px 10px}
.ftab.cat.active{background:var(--b);border-color:var(--b)}

/* ITEM LIST */
.item-list{display:flex;flex-direction:column;gap:8px;padding:0 20px calc(var(--nav-h) + 36px)}
.item-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:15px;display:flex;align-items:center;cursor:pointer;transition:background .15s,border-color .15s,transform .2s ease-out}
.item-card:active{background:var(--card2);border-color:var(--border2)}
.item-card.swipe-right{background:rgba(71,224,154,.08)!important;border-left:5px solid var(--g)!important}
.item-card.swipe-left{background:rgba(244,85,74,.08)!important;border-right:5px solid var(--r)!important}
.item-card.low-stock{border-left:3px solid var(--y)}
.item-card.out-of-stock{border-left:3px solid var(--r)}
.item-card.selected{border-color:var(--b);background:rgba(77,166,255,.06)}
.i-info{flex:1;overflow:hidden;margin-right:12px}
.i-name{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:3px}
.i-meta{font-size:12px;color:var(--muted);display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.i-qty{background:rgba(71,224,154,.1);padding:2px 8px;border-radius:6px;color:var(--g);font-weight:700;font-size:12px}
.i-qty.low{background:rgba(255,184,77,.1);color:var(--y)}
.i-qty.out{background:rgba(244,85,74,.1);color:var(--r)}
.i-loc{color:#666;font-size:11px}
.i-cat{font-size:10px;padding:1px 6px;border-radius:4px;white-space:nowrap}
.i-cat.cameras{background:rgba(77,166,255,.1);color:var(--b)}
.i-cat.security{background:rgba(255,184,77,.1);color:var(--y)}
.i-cat.loxone{background:rgba(71,224,154,.1);color:var(--g)}
.i-cat.general{background:rgba(150,150,150,.1);color:#aaa}
.i-mfr{font-size:10px;color:#555}
.i-cost{font-size:10px;color:var(--g);font-family:'JetBrains Mono'}
.i-sku{font-family:'JetBrains Mono';font-size:10px;opacity:0.35;margin-top:4px}
.i-arrow{color:#444;font-size:18px;flex-shrink:0}
.i-thumb-wrap{width:48px;height:48px;border-radius:10px;background:var(--card2);display:flex;align-items:center;justify-content:center;margin-right:12px;overflow:hidden;flex-shrink:0}
.i-thumb-wrap img{width:100%;height:100%;object-fit:cover}
.i-thumb-wrap .ico{font-size:24px;filter:grayscale(0.5)}

/* BULK */
.bulk-check{width:22px;height:22px;border-radius:6px;border:2px solid var(--border2);background:transparent;flex-shrink:0;display:none;align-items:center;justify-content:center;cursor:pointer;margin-right:10px;transition:all .15s}
.bulk-check.checked{background:var(--b);border-color:var(--b)}
.bulk-check.checked::after{content:'✓';color:#fff;font-size:12px;font-weight:700}
.bulk-mode .bulk-check{display:flex}
.bulk-bar{position:fixed;bottom:-200px;left:0;right:0;background:rgba(20,20,20,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--b);padding:12px 20px;display:flex;align-items:center;justify-content:space-between;transition:bottom .3s cubic-bezier(.32,.72,0,1);z-index:95}
.bulk-bar.on{bottom:91px} /* 83px nav + 8px gap */
.bulk-bar-info{font-size:14px;font-weight:700;color:var(--b)}
.bulk-bar-actions{display:flex;gap:8px}

/* LOCATION CARDS */
.loc-list{display:flex;flex-direction:column;gap:8px;padding:0 20px calc(var(--nav-h) + 36px)}
.loc-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px;display:flex;justify-content:space-between;align-items:center}
.loc-info{flex:1}.loc-name{font-size:15px;font-weight:600;margin-bottom:2px}
.loc-desc{font-size:12px;color:var(--muted)}.loc-count{font-size:11px;color:var(--b);margin-top:4px;font-weight:600}
.loc-actions{display:flex;gap:8px}
.loc-btn{width:36px;height:36px;border-radius:10px;border:1px solid var(--border2);background:var(--card2);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--muted);font-size:14px}
.loc-btn:active{background:var(--border2)}.loc-btn.del{border-color:rgba(244,85,74,.3);color:var(--r)}

/* ACTIVITY LOG */
.log-list{display:flex;flex-direction:column;gap:6px;padding:0 20px calc(var(--nav-h) + 36px)}
.log-item{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:13px 15px;display:flex;justify-content:space-between;align-items:center}
.log-left{flex:1;overflow:hidden}
.log-action{font-size:13px;font-weight:600;margin-bottom:2px}
.log-action .plus{color:var(--g)}.log-action .minus{color:var(--r)}
.log-detail{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.log-time{font-size:10px;color:#555;white-space:nowrap;margin-left:10px;font-family:'JetBrains Mono'}

/* BOTTOM NAV — Apple HIG: 49px content + 34px home indicator = 83px total */
.bottom-nav{
  position:fixed;bottom:0;left:0;right:0;z-index:90;
  display:flex;
  align-items:flex-start; /* icons sit in top 49px; bottom 34px is home-indicator fill */
  height:83px;
  padding-bottom:34px; /* clearance for home indicator */
  background:rgba(10,10,10,.95);
  backdrop-filter:blur(30px) saturate(180%);
  -webkit-backdrop-filter:blur(30px) saturate(180%);
  border-top:1px solid rgba(255,255,255,.07);
  z-index:200; /* always above sheets, shade, and everything else */
}
.nav-item{flex:1;height:49px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:#555;font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;cursor:pointer;transition:color .2s;flex-shrink:0}
.nav-item.active{color:var(--g)}.nav-item svg{stroke:currentColor;width:22px;height:22px;flex-shrink:0}

/* SHEETS — slide up from nav bar top, never obscure it */
.shade{position:fixed;inset:0;z-index:150;background:rgba(0,0,0,.65);opacity:0;visibility:hidden;transition:opacity .25s;pointer-events:none}
.shade.on{opacity:1;visibility:visible;pointer-events:auto}
.sheet{position:fixed;bottom:83px;left:0;right:0;z-index:160;background:var(--card);border-radius:24px 24px 0 0;padding:0 20px 24px;transform:translateY(100%);transition:transform .35s cubic-bezier(.32,.72,0,1);max-height:calc(92vh - 83px);overflow-y:auto}
.sheet.on{transform:translateY(0)}
.pill{width:32px;height:4px;border-radius:2px;background:var(--border2);margin:10px auto 16px}
.sheet-title{font-size:20px;font-weight:700;text-align:center;margin-bottom:18px}

/* FORM */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:11px;color:var(--muted);margin-bottom:6px;font-weight:600;text-transform:uppercase;letter-spacing:.8px}
.form-input,.form-select,.form-textarea{width:100%;padding:13px 14px;background:var(--card2);border:1.5px solid var(--border2);border-radius:10px;color:var(--fg);font-size:14px;font-family:'DM Sans';outline:none;transition:border-color .2s}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--g)}
.form-select{-webkit-appearance:none;appearance:none}
.form-textarea{resize:vertical;min-height:60px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* QTY ADJUSTER */
.qty-adjuster{display:flex;align-items:center;gap:12px;justify-content:center;margin:6px 0}
.qty-btn{width:44px;height:44px;border-radius:12px;border:none;font-size:22px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .1s}
.qty-btn:active{transform:scale(.9)}
.qty-btn.minus{background:rgba(244,85,74,.15);color:var(--r)}
.qty-btn.plus{background:rgba(71,224,154,.15);color:var(--g)}
.qty-display{width:80px;font-size:32px;font-weight:700;text-align:center;font-family:'JetBrains Mono';background:transparent;border:none;color:var(--fg);outline:none;padding:0}

/* SCAN SHEET */
.scan-res{display:flex;flex-direction:column;align-items:center}
.code-display{text-align:center;margin-bottom:15px}
.acts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.ab{padding:18px 10px;border-radius:14px;border:none;font-family:'DM Sans';font-size:15px;font-weight:700;display:flex;flex-direction:column;align-items:center;gap:3px;cursor:pointer;transition:transform .1s}
.ab:active{transform:scale(.96)}
.ab small{font-size:10px;font-weight:500;opacity:.5}
.ab.add{background:var(--g);color:#000}.ab.use{background:var(--r);color:#fff}
.btn-row{display:flex;gap:10px;margin-top:16px}
.btn-row>*{flex:1}
.btn-full{width:100%;padding:14px;border-radius:12px;border:none;font-family:'DM Sans';font-size:14px;font-weight:700;cursor:pointer;margin-top:10px;transition:transform .1s}
.btn-full:active{transform:scale(.97)}
.btn-full.cancel{background:var(--card2);color:var(--fg)}
.btn-full.save{background:var(--g);color:#000}
.btn-full.danger{background:rgba(244,85,74,.12);color:var(--r);border:1px solid rgba(244,85,74,.3)}
.btn-full.ghost{background:var(--card2);color:var(--fg);border:1px solid var(--border2)}

.empty-state{text-align:center;padding:50px 20px;color:var(--muted)}
.empty-state svg{width:48px;height:48px;stroke:var(--border2);margin-bottom:12px}
.empty-state p{font-size:14px;margin-bottom:6px}
.empty-state small{font-size:12px;color:#444}

.toast{position:fixed;top:calc(var(--sat) + 12px);left:14px;right:14px;z-index:200;padding:14px 16px;border-radius:14px;font-size:13px;font-weight:600;text-align:center;transform:translateY(-160%);transition:transform .3s;pointer-events:none}
.toast.show{transform:translateY(0)}.toast.ok{background:var(--g);color:#000}.toast.no{background:var(--r);color:#fff}

/* DETAIL TABS */
.detail-tabs{display:flex;gap:0;margin-bottom:16px;border-bottom:1px solid var(--border)}
.detail-tab{flex:1;padding:10px;text-align:center;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;transition:all .2s}
.detail-tab.active{color:var(--g);border-bottom-color:var(--g)}

/* HISTORY */
.history-list{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow-y:auto}
.history-item{display:flex;align-items:center;gap:12px;padding:10px;background:var(--card2);border-radius:10px}
.history-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.history-dot.plus{background:var(--g)}.history-dot.minus{background:var(--r)}.history-dot.neutral{background:var(--b)}
.history-info{flex:1;overflow:hidden}
.history-action{font-size:13px;font-weight:600}
.history-time{font-size:10px;color:var(--muted);font-family:'JetBrains Mono'}

.sku-entry-btn{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);z-index:5;background:rgba(0,0,0,.7);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.15);padding:10px 20px;border-radius:30px;color:#fff;font-weight:600;font-size:13px;cursor:pointer;display:flex;align-items:center;gap:8px;transition:transform .15s}
.sku-entry-btn:active{transform:translateX(-50%) scale(.95)}

/* TORCH BTN */
.torch-btn{position:absolute;bottom:20px;right:20px;z-index:5;width:44px;height:44px;background:rgba(0,0,0,.7);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.15);border-radius:50%;color:#fff;font-size:20px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .15s}
.torch-btn:active{transform:scale(.95)}
.torch-btn.on{background:var(--y);color:#000;border-color:var(--y)}

/* PULL TO REFRESH */
.pull-indicator{position:fixed;top:calc(var(--sat) + 70px);left:50%;transform:translateX(-50%) scale(.8);z-index:50;background:rgba(71,224,154,.15);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(71,224,154,.2);color:var(--g);padding:8px 20px;border-radius:20px;font-size:12px;font-weight:600;opacity:0;transition:all .25s;pointer-events:none}
.pull-indicator.active{opacity:1;transform:translateX(-50%) scale(1)}

/* Auth Screen */
.auth-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    z-index: 999999;
    display: flex; justify-content: center; align-items: center;
    transition: opacity 0.3s ease;
}
.auth-box {
    background: var(--card); border-radius: 20px; padding: 30px;
    width: 320px; text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.8);
    border: 1px solid rgba(255,255,255,0.05);
}
.auth-title { color: #fff; margin: 0 0 5px 0; font-size: 22px; }
.auth-subtitle { color: var(--muted); font-size: 14px; margin-bottom: 25px; line-height: 1.4; }
.auth-input-text {
    width: 100%; background: var(--bg); border: 1px solid var(--border);
    color: #fff; padding: 15px; border-radius: 12px;
    font-size: 16px; margin-bottom: 15px; text-align: center;
    transition: 0.2s; -webkit-appearance: none; appearance: none;
}
.auth-input-text:focus { outline: none; border-color: var(--b); background: rgba(10,132,255,0.1); }
.auth-input {
    width: 100%; background: var(--bg); border: 1px solid var(--border);
    color: #fff; padding: 15px; border-radius: 12px;
    font-size: 28px; text-align: center; letter-spacing: 8px; margin-bottom: 15px;
    transition: 0.2s;
}
.auth-input:focus { outline: none; border-color: var(--b); background: rgba(10,132,255,0.1); }
.auth-button {
    width: 100%; background: var(--b); color: white; border: none;
    padding: 16px; border-radius: 12px; font-size: 16px; font-weight: 600;
    cursor: pointer; transition: 0.2s;
}
.auth-button:active { background: #0066cc; transform: scale(0.96); }
.auth-back-btn { background: transparent; border: 1px solid var(--border); color: var(--muted); margin-top: 10px; }
.auth-back-btn:active { background: var(--border); }
.auth-error { color: var(--r); font-size: 14px; margin-top: 15px; font-weight: 500; }