:root{
  --ink:#16302C; --muted:#6B7C79; --bg:#EEF2F1; --card:#fff;
  --brand:#0F5C54; --brand-2:#0B4640; --soft:#DDEBE8;
  --low:#C77700; --low-bg:#FFF1D9; --out:#B3261E; --out-bg:#FCE3E1; --ok:#1B7F4B;
  --line:#E1E8E6;
}
*{-webkit-tap-highlight-color:transparent}
html,body{background:#DCE4E2}
body{font-family:'Hind Siliguri','Plus Jakarta Sans',system-ui,sans-serif;color:var(--ink);font-size:15px;margin:0}
.app{max-width:480px;min-height:100vh;margin:0 auto;background:var(--bg);position:relative;box-shadow:0 0 40px rgba(0,0,0,.08);padding-bottom:110px}

/* header */
.app-header{background:var(--brand);color:#fff;padding:calc(env(safe-area-inset-top,0px) + 20px) 20px 56px;border-radius:0 0 28px 28px}
.app-title{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:1.5rem;margin:0;letter-spacing:-.3px}
.app-sub{margin:2px 0 0;font-size:.85rem;opacity:.75}
.icon-btn{width:40px;height:40px;border:0;border-radius:12px;background:rgba(255,255,255,.14);color:#fff;font-size:1.1rem}
.stat-row{display:flex;gap:10px;margin-top:20px}
.stat{flex:1;background:rgba(255,255,255,.12);border-radius:14px;padding:10px 12px;display:flex;flex-direction:column}
.stat-num{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:1.4rem;line-height:1.1}
.stat-num.text-low{color:#FFD58A}
.stat-lbl{font-size:.78rem;opacity:.8}

/* body */
.app-body{padding:0 16px;margin-top:-30px}
.search-box{position:relative}
.search-box i{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}
.search-box .form-control{height:50px;border:0;border-radius:16px;padding-left:42px;box-shadow:0 4px 14px rgba(15,92,84,.12)}
.search-box .form-control:focus,.form-control:focus,.form-select:focus{box-shadow:0 0 0 3px rgba(15,92,84,.25);border-color:var(--brand)}
.chips{display:flex;gap:8px;overflow-x:auto;padding:14px 0 6px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:20px;padding:5px 14px;font-size:.85rem;font-weight:500}
.chip.active{background:var(--ink);border-color:var(--ink);color:#fff}

/* item rows */
.item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:var(--card);border:0;border-radius:16px;padding:12px 14px;margin-top:10px;box-shadow:0 1px 2px rgba(22,48,44,.06)}
.item:active{background:#F7FAF9}
.avatar{flex:none;width:44px;height:44px;border-radius:12px;background:var(--soft);color:var(--brand);display:grid;place-items:center;font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:1.1rem}
.item-info{flex:1;min-width:0}
.item-name{font-weight:600;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item-meta{font-size:.78rem;color:var(--muted)}
.item-qty{text-align:right}
.qty-num{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:1.25rem;line-height:1.1}
.qty-unit{font-size:.78rem;color:var(--muted)}
.tag{display:inline-block;font-size:.7rem;font-weight:600;border-radius:8px;padding:1px 8px;margin-top:3px}
.tag.low{background:var(--low-bg);color:var(--low)}
.tag.out{background:var(--out-bg);color:var(--out)}
.item.is-out .qty-num{color:var(--out)}
.item.is-low .qty-num{color:var(--low)}

.empty{text-align:center;padding:48px 24px;color:var(--muted)}
.empty i{font-size:2.6rem;color:var(--brand);opacity:.5}
.empty h3{font-size:1.1rem;color:var(--ink);margin:12px 0 4px;font-weight:600}

/* fab */
.fab{position:fixed;bottom:calc(env(safe-area-inset-bottom,0px) + 22px);left:50%;margin-left:min(170px,calc(50vw - 70px));width:58px;height:58px;border:0;border-radius:18px;background:var(--brand);color:#fff;font-size:1.5rem;box-shadow:0 8px 20px rgba(15,92,84,.4);z-index:50}
.fab:active{background:var(--brand-2)}

/* bottom sheets */
.modal-dialog-bottom{margin:0 auto;max-width:480px;min-height:100%;display:flex;align-items:flex-end}
.modal.fade .modal-dialog-bottom{transform:translateY(100%);transition:transform .25s ease-out}
.modal.show .modal-dialog-bottom{transform:none}
.modal-dialog-bottom .modal-content{border:0;border-radius:24px 24px 0 0;padding-bottom:env(safe-area-inset-bottom,0px)}
.sheet-handle{width:40px;height:4px;border-radius:2px;background:var(--line);margin:10px auto 0}
.sheet-title{font-family:'Plus Jakarta Sans',sans-serif;font-weight:800;font-size:1.2rem;margin-bottom:16px}
.form-label{font-weight:500;font-size:.85rem;margin-bottom:4px}
.form-control,.form-select{height:48px;border-radius:12px;border-color:var(--line)}
.btn-main{height:50px;border:0;border-radius:14px;background:var(--brand);color:#fff;font-weight:600}
.btn-main:hover,.btn-main:active{background:var(--brand-2);color:#fff}
.btn-delete{width:50px;height:50px;border:0;border-radius:14px;background:var(--out-bg);color:var(--out)}

.mode-tabs{display:flex;background:var(--bg);border-radius:14px;padding:4px;margin-bottom:14px}
.mode-tabs button{flex:1;border:0;background:transparent;border-radius:11px;padding:8px 0;font-weight:600;color:var(--muted)}
.mode-tabs button.active{background:#fff;color:var(--brand);box-shadow:0 1px 3px rgba(0,0,0,.1)}
.qty-input{position:relative}
.qty-input .form-control{height:64px;font-size:1.8rem;font-weight:700;font-family:'Plus Jakarta Sans',sans-serif;padding-right:80px}
.qty-input span{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-weight:500}
.preview{min-height:22px;margin:10px 2px 14px;font-size:.9rem;color:var(--muted)}
.preview b{color:var(--brand)}
.history{margin-top:18px;border-top:1px solid var(--line);padding-top:10px;max-height:160px;overflow-y:auto}
.history-row{display:flex;justify-content:space-between;font-size:.82rem;color:var(--muted);padding:4px 0}
.history-row b{color:var(--ink);font-weight:600}

.toast-wrap{position:fixed;top:calc(env(safe-area-inset-top,0px) + 12px);left:0;right:0;display:flex;justify-content:center;z-index:2000;pointer-events:none}
.toast{background:var(--ink);color:#fff;border-radius:12px}

/* brand / logo */
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{flex:none;width:60px;height:60px;border-radius:13px;box-shadow:0 4px 12px rgba(0,0,0,.2)}