/* Chia Kèo v1.0.0 — theo quy tắc cứng: nền trắng, Manrope tối đa 600, icon Ionicons inline, không dark/glass/gradient. */
:root{
  --primary:#0B6E4F; --primary-strong:#095C42; --primary-soft:#E6F4EE;
  --red:#C92A2A; --red-soft:#FDECEC; --amber:#B45309; --amber-soft:#FEF3C7;
  --border:#E3EAE6; --border-strong:#C9D4CE; --text:#14201B; --dim:#5B6B63;
  --bg:#FFFFFF; --surface:#FFFFFF; --soft:#F2F4F0; --radius:16px;
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:'Manrope',-apple-system,'Segoe UI',Roboto,Arial,sans-serif;}
body{font-size:16px;line-height:1.45;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;padding:0;}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--text);}
a{color:var(--primary);}
.ic{width:22px;height:22px;flex:none;}
.hidden{display:none!important;}

/* Hiệu ứng nhấn theo số đã chốt: nhỏ/icon/nav .95, nút chính/thẻ .965, mục lớn .98; transition .12s */
.press-sm:active{transform:scale(.95);}
.press-md:active{transform:scale(.965);}
.press-lg:active{transform:scale(.98);}
.press-sm,.press-md,.press-lg{transition:transform .12s ease;}

/* Khung app mobile: tối đa 480px giữa trang trên desktop */
#app{max-width:480px;margin:0 auto;min-height:100dvh;position:relative;padding-bottom:92px;background:var(--bg);}
.view{padding:20px 16px 24px;}
.view h1{font-size:22px;font-weight:600;margin:0;letter-spacing:-.01em;}
.subtitle{font-size:13px;font-weight:500;color:var(--dim);margin:4px 0 0;}

/* Thẻ tổng */
.summary{background:var(--primary-soft);border-radius:20px;padding:18px;margin-top:16px;}
.summary .lbl{font-size:13px;font-weight:600;color:var(--primary-strong);}
.summary .big{font-size:32px;font-weight:600;color:var(--primary-strong);margin-top:2px;letter-spacing:-.01em;}
.summary .sub2{font-size:13px;font-weight:500;color:var(--dim);margin-top:2px;}

/* Ô tìm 52px */
.search{display:flex;align-items:center;gap:10px;height:52px;border:1px solid var(--border);
  border-radius:14px;padding:0 14px;margin-top:16px;background:var(--surface);}
.search .ic{color:var(--dim);width:20px;height:20px;}
.search input{border:none;outline:none;flex:1;height:100%;background:transparent;font-weight:500;}
.search input::placeholder{color:#8A978F;}

/* Lọc 3 mục */
.seg{display:flex;gap:4px;background:var(--soft);border-radius:999px;padding:4px;margin-top:14px;}
.seg button{flex:1;height:36px;border-radius:999px;font-size:14px;font-weight:500;color:var(--dim);}
.seg button[aria-current="true"]{background:#fff;color:var(--text);font-weight:600;
  box-shadow:0 1px 2px rgba(0,0,0,.08),0 0 0 1px rgba(0,0,0,.04);}

/* Thẻ kèo */
.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;
  padding:16px;margin-top:12px;text-align:left;width:100%;display:block;}
.card-head{display:flex;gap:12px;align-items:flex-start;}
.cat-ico{width:44px;height:44px;flex:none;border-radius:14px;background:var(--primary-soft);
  color:var(--primary);display:flex;align-items:center;justify-content:center;}
.cat-ico .ic{width:24px;height:24px;}
.card-title{flex:1;min-width:0;}
.card-title .t{font-size:16px;font-weight:600;overflow-wrap:anywhere;}
.card-title .m{font-size:13px;font-weight:500;color:var(--dim);margin-top:2px;}
.chip{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:600;
  border-radius:999px;padding:4px 10px;white-space:nowrap;}
.chip.open{background:var(--amber-soft);color:var(--amber);}
.chip.closed{background:#EDEFEA;color:var(--dim);}
.chip .ic{width:14px;height:14px;}
.card-total{display:flex;justify-content:space-between;align-items:center;margin-top:12px;}
.card-total .money{font-size:18px;font-weight:600;}
.card-total .meta{font-size:13px;font-weight:500;color:var(--dim);}
.chev{color:var(--dim);display:flex;align-items:center;}
.chev .ic{width:20px;height:20px;}

/* Dòng ai nợ ai */
.debt{border-top:1px solid var(--border);margin-top:12px;padding-top:12px;display:flex;flex-direction:column;gap:10px;}
.debt-row{display:flex;align-items:center;gap:10px;}
.debt-row .txt{flex:1;min-width:0;font-size:14px;font-weight:500;overflow-wrap:anywhere;}
.debt-row .amt{font-size:14px;font-weight:600;color:var(--red);white-space:nowrap;}
.btn-paid{height:36px;padding:0 14px;border-radius:999px;background:var(--primary);color:#fff;
  font-size:13px;font-weight:600;white-space:nowrap;}
.btn-paid:disabled{opacity:.45;}
.settled-note{font-size:13px;font-weight:500;color:var(--dim);margin-top:12px;}

/* Nút */
.btn{display:flex;align-items:center;justify-content:center;gap:8px;height:52px;border-radius:14px;
  font-size:16px;font-weight:600;width:100%;}
.btn.primary{background:var(--primary);color:#fff;}
.btn.primary:disabled{opacity:.45;}
.btn.ghost{border:1px solid var(--border-strong);color:var(--text);background:#fff;}
.btn.danger{color:var(--red);border:1px solid #F0C6C6;background:#fff;}
.btn.small{height:44px;font-size:14px;border-radius:12px;width:auto;padding:0 16px;}
.btn .ic{width:20px;height:20px;}
.fab{position:fixed;bottom:92px;right:calc(50% - 240px + 16px);width:56px;height:56px;border-radius:50%;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(11,110,79,.35);z-index:40;}
.fab .ic{width:26px;height:26px;}
@media (max-width:480px){ .fab{right:16px;} }

/* Tab dưới */
.tabbar{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;
  height:76px;background:#fff;border-top:1px solid var(--border);display:flex;z-index:50;
  padding-bottom:env(safe-area-inset-bottom);}
.tabbar button{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:12px;font-weight:500;color:#8A978F;}
.tabbar button .ic{width:24px;height:24px;}
.tabbar button[aria-current="page"]{color:var(--primary);font-weight:600;}
.tabbar button[aria-current="page"] .ic{fill:currentColor;}

/* Trạng thái rỗng */
.empty{text-align:center;padding:36px 16px;color:var(--dim);}
.empty .ic{width:48px;height:48px;color:#B9C2B6;margin-bottom:8px;}
.empty .t{font-size:16px;font-weight:600;color:var(--text);}
.empty .d{font-size:14px;font-weight:500;margin-top:4px;}

/* Sheet đáy */
.overlay{position:fixed;inset:0;background:rgba(20,32,27,.45);z-index:80;display:flex;
  align-items:flex-end;justify-content:center;}
.sheet{background:#fff;width:100%;max-width:480px;border-radius:20px 20px 0 0;padding:12px 16px calc(20px + env(safe-area-inset-bottom));
  max-height:88dvh;overflow-y:auto;animation:sheetIn .18s ease;}
@keyframes sheetIn{from{transform:translateY(24px);opacity:.6;}to{transform:none;opacity:1;}}
.sheet .grab{width:40px;height:4px;border-radius:999px;background:#D8DCD8;margin:0 auto 12px;}
.sheet h2{font-size:18px;font-weight:600;margin:0 0 4px;}
.sheet .hint{font-size:13px;font-weight:500;color:var(--dim);margin:0 0 14px;}
.sheet .row{margin-bottom:14px;}
.field-lbl{display:block;font-size:14px;font-weight:600;margin-bottom:6px;}
.input{width:100%;height:52px;border:1px solid var(--border-strong);border-radius:14px;
  padding:0 14px;background:#fff;font-weight:500;outline:none;}
.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,110,79,.15);}
textarea.input{height:auto;min-height:52px;padding:12px 14px;resize:none;}
.money-wrap{position:relative;}
.money-wrap .suffix{position:absolute;right:14px;top:50%;transform:translateY(-50%);
  font-weight:600;color:var(--dim);pointer-events:none;}

/* Chip loại kèo */
.chips{display:flex;gap:8px;flex-wrap:wrap;}
.chips button{display:flex;align-items:center;gap:6px;height:44px;padding:0 14px;border-radius:999px;
  border:1px solid var(--border-strong);font-size:14px;font-weight:600;color:var(--dim);}
.chips button .ic{width:18px;height:18px;}
.chips button[aria-pressed="true"]{background:var(--primary);border-color:var(--primary);color:#fff;}

/* Bộ chọn ngày tự vẽ */
.date-btn{width:100%;height:52px;border:1px solid var(--border-strong);border-radius:14px;
  display:flex;align-items:center;gap:10px;padding:0 14px;font-weight:500;text-align:left;}
.date-btn .ic{color:var(--dim);}
.cal{border:1px solid var(--border);border-radius:16px;padding:12px;margin-top:8px;}
.cal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.cal-head .t{font-weight:600;font-size:15px;}
.cal-head button{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--dim);}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;text-align:center;}
.cal-grid .dow{font-size:12px;font-weight:600;color:var(--dim);padding:6px 0;}
.cal-grid button{height:40px;border-radius:12px;font-size:14px;font-weight:500;}
.cal-grid button.today{box-shadow:inset 0 0 0 1.5px var(--primary);}
.cal-grid button.sel{background:var(--primary);color:#fff;font-weight:600;}
.cal-grid button:disabled{color:#C9D4CE;}

/* Checkbox danh sách chia */
.pick-row{display:flex;align-items:center;gap:12px;min-height:52px;padding:8px 0;border-bottom:1px solid var(--border);}
.pick-row:last-child{border-bottom:none;}
.pick-row .nm{flex:1;font-weight:600;font-size:15px;overflow-wrap:anywhere;}
.pick-row .share{font-size:13px;font-weight:600;color:var(--dim);white-space:nowrap;}
.pick-row .share input{width:110px;height:44px;border:1px solid var(--border-strong);border-radius:12px;
  padding:0 10px;text-align:right;font-weight:600;}
.check{width:24px;height:24px;flex:none;border-radius:8px;border:2px solid var(--border-strong);
  display:flex;align-items:center;justify-content:center;color:#fff;}
.check.on{background:var(--primary);border-color:var(--primary);}
.check .ic{width:16px;height:16px;}
.avatar{width:40px;height:40px;flex:none;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;}
.av-sm{width:32px;height:32px;font-size:13px;}
.status-line{font-size:13px;font-weight:600;margin-top:8px;}
.status-line.ok{color:var(--primary);}
.status-line.warn{color:var(--amber);}
.status-line.bad{color:var(--red);}

/* Hàng thành viên / số dư */
.member-row{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--border);}
.member-row:last-child{border-bottom:none;}
.member-row .nm{flex:1;min-width:0;}
.member-row .nm .t{font-size:15px;font-weight:600;overflow-wrap:anywhere;}
.member-row .nm .s{font-size:13px;font-weight:500;color:var(--dim);margin-top:1px;}
.member-row .nm .s.neg{color:var(--red);}
.member-row .nm .s.pos{color:var(--primary);}
.icon-btn{width:44px;height:44px;flex:none;border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--dim);}
.icon-btn.danger{color:var(--red);}
.icon-btn .ic{width:20px;height:20px;}
.pill-add{height:44px;padding:0 16px;border-radius:999px;background:var(--primary);color:#fff;
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.pill-add .ic{width:18px;height:18px;}
.head-row{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;}

/* Chỉ số 3 cột */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:16px;}
.stat{border:1px solid var(--border);border-radius:16px;padding:12px 10px;text-align:center;}
.stat .l{font-size:12px;font-weight:600;color:var(--dim);}
.stat .v{font-size:17px;font-weight:600;margin-top:4px;overflow-wrap:anywhere;}
.section-t{font-size:15px;font-weight:600;margin:22px 0 4px;}
.kv{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);font-size:14px;font-weight:500;}
.kv:last-child{border-bottom:none;}
.kv .r{font-weight:600;white-space:nowrap;}
.kv .r.neg{color:var(--red);}
.kv .r.pos{color:var(--primary);}

/* Thông tin */
.info-card{border:1px solid var(--border);border-radius:20px;padding:16px;margin-top:12px;}
.info-card h3{margin:0 0 6px;font-size:16px;font-weight:600;}
.info-card p,.info-card li{font-size:14px;font-weight:500;color:var(--dim);}
.info-card ul{margin:6px 0 0;padding-left:18px;}
.info-card li{margin-bottom:4px;}
.foot{text-align:center;font-size:13px;font-weight:500;color:var(--dim);margin:24px 0 8px;}
.code-box{display:flex;align-items:center;gap:10px;margin-top:10px;}
.code-box .code{flex:1;font-size:24px;font-weight:600;letter-spacing:.18em;text-align:center;
  border:1px dashed var(--border-strong);border-radius:14px;padding:10px 8px;}
.sync-line{font-size:13px;font-weight:500;color:var(--dim);margin-top:10px;display:flex;align-items:center;gap:6px;}
.sync-line .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);flex:none;}
.sync-line.off .dot{background:var(--amber);}
.sync-line .ic{width:16px;height:16px;}

/* Banner */
.banner{display:flex;gap:10px;align-items:flex-start;background:var(--amber-soft);border-radius:14px;
  padding:12px;margin-top:14px;font-size:13px;font-weight:500;color:#7A4A00;}
.banner .ic{width:20px;height:20px;flex:none;margin-top:1px;}
.banner button{font-weight:600;text-decoration:underline;white-space:nowrap;}

/* Toast */
#toast{position:fixed;left:50%;transform:translateX(-50%);bottom:96px;z-index:120;background:var(--text);
  color:#fff;font-size:14px;font-weight:600;padding:12px 18px;border-radius:999px;max-width:90vw;
  box-shadow:0 4px 16px rgba(0,0,0,.25);}
#toast.hidden{display:none;}

/* Màn hình vào nhóm */
.gate{max-width:480px;margin:0 auto;min-height:100dvh;padding:40px 20px 24px;text-align:center;}
.gate .logo{width:72px;height:72px;border-radius:22px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;margin:0 auto;}
.gate .logo .ic{width:38px;height:38px;}
.gate h1{font-size:26px;font-weight:600;margin:18px 0 4px;}
.gate p{font-size:14px;font-weight:500;color:var(--dim);margin:0 0 24px;}
.gate .input{text-align:center;font-size:20px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;}
.gate .or{font-size:13px;font-weight:600;color:var(--dim);margin:18px 0 10px;}
.gate .link{font-size:14px;font-weight:600;color:var(--primary);margin-top:16px;}