:root{
    --green:#15803d; --green-d:#166534; --green-l:#dcfce7;
    --red:#dc2626; --red-l:#fee2e2; --amber:#b45309; --amber-l:#fef3c7;
    --ink:#1f2937; --muted:#6b7280; --line:#e5e7eb; --bg:#f3f4f6; --card:#fff;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
    font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
    background:var(--bg); color:var(--ink); font-size:16px; line-height:1.45;
    -webkit-text-size-adjust:100%;
}
a{color:var(--green); text-decoration:none}
.boot{text-align:center;margin-top:40vh;font-size:28px;color:var(--green);font-weight:700}

/* App scaffold */
#app{min-height:100vh}
.screen{max-width:680px;margin:0 auto;padding:14px;padding-bottom:84px}

/* Topbar */
.topbar{
    position:sticky; top:0; z-index:20; display:flex; align-items:center; justify-content:space-between; gap:8px;
    background:var(--green); color:#fff; padding:12px 16px; padding-top:calc(12px + env(safe-area-inset-top));
}
.topbar .brand{color:#fff; font-weight:700; font-size:17px; display:flex; align-items:center; gap:8px; min-width:0}
.topbar .brand b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar .tools{display:flex; align-items:center; gap:6px; flex:0 0 auto}
.sync-dot{width:10px;height:10px;border-radius:50%;background:#9ca3af;display:inline-block;transition:.3s}
.sync-dot.ok{background:#86efac}
.sync-dot.busy{background:#fde047;animation:pulse 1s infinite}
.sync-dot.off{background:#f87171}
.sync-dot.err{background:#fb923c}
@keyframes pulse{50%{opacity:.35}}
.icon-btn{background:rgba(255,255,255,.15);border:none;color:#fff;width:34px;height:34px;border-radius:9px;font-size:17px;cursor:pointer}

/* Tabbar */
.tabbar{
    position:fixed; bottom:0; left:0; right:0; z-index:20; display:flex; background:#fff;
    border-top:1px solid var(--line); padding-bottom:env(safe-area-inset-bottom); max-width:680px; margin:0 auto;
}
.tabbar button{
    flex:1; border:none; background:none; padding:7px 2px 6px; font-size:10px; color:var(--muted); font-weight:600; cursor:pointer; font-family:inherit;
    position:relative; transition:color .2s;
    display:flex; flex-direction:column; align-items:center; white-space:nowrap;
}
.tabbar button span{
    display:flex; align-items:center; justify-content:center;
    font-size:20px; line-height:1; height:28px; min-width:44px; margin-bottom:3px;
    border-radius:999px; transition:background .2s, transform .2s;
}
.tabbar button.on{color:var(--green); font-weight:700}
.tabbar button.on span{background:var(--green-l); transform:translateY(-1px) scale(1.06)}
.tabbar button.on::after{
    content:''; position:absolute; top:0; left:50%; transform:translateX(-50%);
    width:26px; height:3px; background:var(--green); border-radius:0 0 4px 4px;
}
.tabbar button:active span{transform:scale(.92)}

/* Cards, text */
.card{background:var(--card); border:1px solid var(--line); border-radius:14px; padding:16px; margin-bottom:14px}
h1{font-size:22px; margin:4px 0 14px}
h2{font-size:18px} h3{font-size:16px; margin:0 0 12px}
.muted{color:var(--muted)} .small{font-size:13px} .center{text-align:center}

/* Stat grid */
.stats{display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-bottom:14px}
.stat{background:#fff; border:1px solid var(--line); border-radius:14px; padding:14px}
.stat .label{font-size:13px; color:var(--muted)}
.stat .value{font-size:22px; font-weight:800; margin-top:4px}
.stat.big{grid-column:1/-1; background:var(--green); color:#fff; border-color:var(--green)}
.stat.big .label{color:#dcfce7}
.stat.danger .value{color:var(--red)}

/* Buttons */
.btn{display:inline-flex; align-items:center; justify-content:center; gap:6px; background:var(--green); color:#fff;
    border:none; border-radius:10px; padding:12px 16px; font-size:15px; font-weight:600; cursor:pointer; text-align:center; font-family:inherit}
.btn:active{transform:translateY(1px)}
.btn.block{display:flex; width:100%}
.btn.ghost{background:#fff; color:var(--green); border:1.5px solid var(--green)}
.btn.grey{background:#eef0f2; color:var(--ink)}
.btn.red{background:var(--red)}
.btn.amber{background:var(--amber)}
.btn.sm{padding:8px 12px; font-size:13px}

/* Forms */
label{display:block; font-size:14px; font-weight:600; margin:10px 0 4px}
input,select,textarea{width:100%; padding:11px 12px; border:1px solid #cbd5e1; border-radius:10px; font-size:16px; font-family:inherit; background:#fff; color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--green-l); border-color:var(--green)}
textarea{min-height:60px}
.row{display:flex; gap:10px} .row>*{flex:1}
.field-hint{font-size:12px; color:var(--muted); margin-top:3px; font-weight:400}

/* Lists */
.list{list-style:none; margin:0; padding:0}
.list li{display:flex; align-items:center; justify-content:space-between; gap:10px; padding:12px 4px; border-bottom:1px solid var(--line)}
.list li:last-child{border-bottom:none}
.list .l-main{min-width:0; flex:1}
.list .l-title{font-weight:600}
.list .l-sub{font-size:13px; color:var(--muted); overflow:hidden; text-overflow:ellipsis}
.list .l-right{text-align:right; white-space:nowrap; display:flex; flex-direction:column; align-items:flex-end; gap:4px}

.badge{display:inline-block; font-size:12px; font-weight:700; padding:3px 9px; border-radius:999px}
.badge.debt{background:var(--red-l); color:var(--red)}
.badge.ok{background:var(--green-l); color:var(--green-d)}
.badge.job{background:#e0e7ff; color:#3730a3}
.badge.pay{background:var(--green-l); color:var(--green-d)}
.amount-pos{color:var(--red); font-weight:800}
.amount-ok{color:var(--green); font-weight:800}

/* Balance box */
.balance-box{text-align:center; padding:18px; border-radius:14px; margin:6px 0 14px}
.balance-box.debt{background:var(--red-l)} .balance-box.ok{background:var(--green-l)}
.balance-box .big{font-size:30px; font-weight:800}
.balance-box.debt .big{color:var(--red)} .balance-box.ok .big{color:var(--green-d)}

/* QR */
.qr-wrap{text-align:center}
.qr-wrap img,.qr-wrap canvas,.qr-wrap table{width:230px; max-width:80%; height:auto; border:1px solid var(--line); border-radius:12px; background:#fff; padding:8px}
.qr-wrap table{border-collapse:collapse} .qr-wrap td{width:5px;height:5px;padding:0}

/* Accordion */
details.acc{border:1px solid var(--line); border-radius:12px; margin-bottom:12px; background:#fff; overflow:hidden}
details.acc>summary{padding:13px 16px; font-weight:700; cursor:pointer; list-style:none; display:flex; justify-content:space-between; align-items:center}
details.acc>summary::-webkit-details-marker{display:none}
details.acc>summary::after{content:"＋"; color:var(--green); font-size:20px}
details.acc[open]>summary::after{content:"－"}
details.acc .acc-body{padding:0 16px 16px}

.actions{display:flex; gap:8px; flex-wrap:wrap; margin-top:12px}
.actions .btn{flex:1; min-width:120px}
.empty{text-align:center; color:var(--muted); padding:26px 10px}
hr.sep{border:none; border-top:1px solid var(--line); margin:16px 0}
.link-back{font-size:13px;color:var(--muted);display:inline-block;margin-bottom:6px}
.del-x{background:none;border:none;color:var(--red);font-size:17px;cursor:pointer;padding:2px 6px}

/* Toast */
#toast{position:fixed; left:50%; bottom:88px; transform:translateX(-50%); background:#111827; color:#fff;
    padding:11px 18px; border-radius:10px; font-size:14px; z-index:50; opacity:0; transition:.3s; pointer-events:none; max-width:90%; text-align:center}
#toast.show{opacity:.96}

/* Login */
.login-wrap{max-width:360px;margin:8vh auto;padding:0 16px}
.login-logo{text-align:center;margin-bottom:18px}
.login-logo .em{font-size:52px}
.remember{display:flex;align-items:center;gap:9px;font-weight:400;font-size:14px;margin:12px 0 0;cursor:pointer;color:var(--ink)}
.remember input{width:auto;flex:0 0 auto;transform:scale(1.2)}

/* Dashboard — card công nợ lớn */
.hero-debt{background:linear-gradient(135deg,var(--green),var(--green-d));color:#fff;border-radius:18px;padding:24px 20px;margin-bottom:14px;text-align:center;box-shadow:0 6px 18px rgba(21,128,61,.25)}
.hero-debt .label{font-size:14px;color:#dcfce7}
.hero-debt .value{font-size:36px;font-weight:800;margin:6px 0 4px;line-height:1.1}
.hero-debt .sub{font-size:13px;color:#bbf7d0}
.stats2{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.stat2{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 12px;text-align:center}
.stat2 .s-ic{font-size:26px;line-height:1}
.stat2 .s-val{font-size:24px;font-weight:800;margin:6px 0 2px}
.stat2 .s-lbl{font-size:13px;color:var(--muted)}
.big-btn{display:flex;align-items:center;gap:14px;width:100%;border:1px solid var(--line);border-radius:16px;padding:16px;margin-bottom:12px;cursor:pointer;font-family:inherit;text-align:left;background:#fff}
.big-btn:active{transform:scale(.985)}
.big-btn .bi{font-size:28px;width:54px;height:54px;display:flex;align-items:center;justify-content:center;border-radius:14px;flex:0 0 auto}
.big-btn .bt{flex:1;display:flex;flex-direction:column;min-width:0}
.big-btn .bt b{font-size:18px;color:var(--ink)}
.big-btn .bt small{font-size:12.5px;color:var(--muted);margin-top:2px}
.big-btn .ba{font-size:26px;color:#cbd5e1;flex:0 0 auto}
.big-btn.green .bi{background:var(--green-l)}
.big-btn.red .bi{background:var(--red-l)}
.big-btn.amber .bi{background:var(--amber-l)}
.big-btn.grey .bi{background:#eef0f2}
.quick2{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:14px}
.big-act{flex-direction:column;gap:4px;padding:18px 8px;font-size:16px;border-radius:16px}
.big-act span{font-size:26px;line-height:1}
.big-act.red{background:var(--red)}

/* Nhóm công việc theo vụ */
.vu-head{font-weight:700;color:var(--green-d);margin:8px 0 4px;font-size:15px}

/* Khung nội dung nhắc nợ (hiện sẵn) */
.reminder-box{white-space:pre-line;background:#f9fafb;border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:13.5px;line-height:1.5;color:var(--ink);margin-bottom:10px;word-break:break-word}

/* Bộ chọn ruộng khi ghi việc */
.fld-checks{border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-top:6px}
.fld-pick{display:flex;align-items:center;gap:10px;padding:11px 12px;font-weight:400;margin:0;border-bottom:1px solid var(--line);cursor:pointer}
.fld-checks .fld-pick:last-child{border-bottom:none}
.fld-pick.all{background:var(--green-l);border:1px solid #86efac;border-radius:10px;margin:6px 0}
.fld-pick input{width:auto;flex:0 0 auto;transform:scale(1.25)}
.fld-pick span{flex:1;min-width:0}
.fld-pick b{white-space:nowrap;color:var(--green-d)}

/* Biểu đồ cột so sánh vụ */
.bar-row{display:flex;align-items:center;gap:8px;margin:9px 0}
.bar-lbl{width:96px;font-size:12px;flex:0 0 auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted)}
.bar-track{flex:1;background:var(--bg);border-radius:6px;height:16px;overflow:hidden;min-width:40px}
.bar-fill{height:100%;background:var(--green);border-radius:6px;min-width:2px}
.bar-val{font-size:12px;font-weight:700;flex:0 0 auto;white-space:nowrap}

/* Offline banner */
.offline-banner{background:var(--amber-l); color:var(--amber); text-align:center; font-size:13px; padding:6px; font-weight:600}