/* Layout: an iPad-landscape POS. Item area left, sale panel right, tab bar bottom.
   Mirrors the Square POS layout Al Madina's cashiers already use; stacks at phone width. */
:root{
  --bg:#eef0f2; --surface:#ffffff; --sunk:#f4f5f7; --line:#dfe2e6;
  --fg:#1d232a; --muted:#6a737d; --tile:#8d99a6; --tile-fg:#ffffff;
  --ink:#2c3640; --ink-fg:#ffffff;
  --give:#1f7a4d; --give-soft:#e3f2ea; --warn:#b4231a; --scrim:rgba(20,26,32,.45);
  --term:#16191d; --term-fg:#f2f4f5;
  --font:"Figtree",-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#14181c; --surface:#1d2227; --sunk:#181c21; --line:#2e353c;
  --fg:#e8ebee; --muted:#9aa3ad; --tile:#4c5763; --tile-fg:#f3f5f7;
  --ink:#e3e8ec; --ink-fg:#14181c;
  --give:#4cc38a; --give-soft:#173327; --warn:#ff7b72; --scrim:rgba(0,0,0,.6);
  --term:#0b0d0f; --term-fg:#f2f4f5; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#14181c; --surface:#1d2227; --sunk:#181c21; --line:#2e353c;
  --fg:#e8ebee; --muted:#9aa3ad; --tile:#4c5763; --tile-fg:#f3f5f7;
  --ink:#e3e8ec; --ink-fg:#14181c;
  --give:#4cc38a; --give-soft:#173327; --warn:#ff7b72; --scrim:rgba(0,0,0,.6);
  --term:#0b0d0f; --term-fg:#f2f4f5; color-scheme:dark}

html,body{height:100%}
body{background:var(--bg);color:var(--fg);font-family:var(--font);font-size:15px;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:12px;box-sizing:border-box}
*{box-sizing:border-box}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
button:focus-visible,input:focus-visible{outline:2px solid var(--give);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}

.banner{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;justify-content:space-between;max-width:1240px;margin:0 auto 10px;font-size:13px;color:var(--muted)}
.banner b{color:var(--fg)}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:var(--give-soft);color:var(--give);font-weight:600}

.app{max-width:1240px;margin:0 auto;height:min(820px,calc(100% - 34px));min-height:560px;background:var(--surface);border:1px solid var(--line);border-radius:18px;display:grid;grid-template-rows:1fr auto;overflow:hidden}
.main{display:grid;grid-template-columns:minmax(0,1fr) 340px;min-height:0}
.left{display:flex;flex-direction:column;min-height:0;padding:18px 20px;gap:14px}
.right{border-left:1px solid var(--line);display:flex;flex-direction:column;min-height:0;padding:18px 18px 16px;gap:10px}

.topbar{display:flex;align-items:center;gap:22px}
.tab{font-size:18px;font-weight:500;padding-bottom:3px;border-bottom:2px solid transparent;color:var(--fg)}
.tab[aria-selected="true"]{border-color:var(--fg);font-weight:600}
.topbar .spacer{flex:1}
.iconbtn{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;color:var(--fg)}
.iconbtn:hover{background:var(--sunk)}
.iconbtn svg{width:22px;height:22px}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:12px;overflow:auto;align-content:start;padding-bottom:6px}
.tile{display:flex;flex-direction:column;border-radius:6px;overflow:hidden;background:var(--sunk);border:1px solid var(--line);text-align:center}
.tile .ab{background:var(--tile);color:var(--tile-fg);font-size:34px;font-weight:700;padding:14px 0 12px;letter-spacing:.01em}
.tile .nm{padding:9px 6px;font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tile:hover .ab{filter:brightness(1.08)}
.tile.empty{visibility:hidden}

.list{overflow:auto;display:flex;flex-direction:column}
.row{display:flex;align-items:center;gap:14px;padding:13px 4px;border-bottom:1px solid var(--line);text-align:left;width:100%}
.row:hover{background:var(--sunk)}
.row .ab{width:38px;height:38px;border-radius:6px;background:var(--sunk);border:1px solid var(--line);display:grid;place-items:center;font-size:13px;color:var(--muted);flex:none}
.row .grow{flex:1;min-width:0}
.row .ab svg{width:20px;height:20px}
.row .sub{font-size:13px;color:var(--muted)}
.row .so{color:var(--warn);font-size:13px}
.row.sold .nm{text-decoration:line-through;color:var(--muted)}
.row .chev{color:var(--muted)}

.keypad{display:flex;flex-direction:column;gap:12px;min-height:0;flex:1}
.kp-amt{font-size:48px;font-weight:700}
.kp-quick{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.kp-quick button{border:1px solid var(--line);border-radius:8px;padding:12px 6px;font-weight:500}
.kp-keys{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:8px;overflow:hidden;flex:1}
.kp-keys button{font-size:26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:56px}
.kp-keys button:nth-child(3n){border-right:0}
.kp-keys button:nth-last-child(-n+3){border-bottom:0}
.kp-keys button:active{background:var(--sunk)}

.sale-h{text-align:center;font-weight:600;font-size:16px;padding:4px 0 2px}
.cust{display:flex;align-items:center;gap:12px;background:var(--sunk);border-radius:10px;padding:12px 14px;text-align:left;width:100%}
.cust .grow{flex:1;min-width:0}
.cust.on{background:var(--give-soft)}
.lines{flex:1;overflow:auto;display:flex;flex-direction:column;min-height:0}
.line{display:flex;gap:10px;justify-content:space-between;padding:9px 2px;font-size:14px;text-align:left;width:100%;border-radius:6px}
.line:hover{background:var(--sunk)}
.line .grow{min-width:0}
.line .sub{font-size:12.5px;color:var(--muted)}
.line.give{color:var(--give);font-weight:600}
.link{color:var(--fg);font-size:14px;padding:9px 2px;text-align:left;border-top:1px solid var(--line);margin-top:4px}
.link.on{color:var(--give);font-weight:600}
.sums{font-size:14px;display:grid;gap:4px;padding-top:8px;border-top:1px solid var(--line)}
.sums div{display:flex;justify-content:space-between;color:var(--muted)}
.btn{border-radius:8px;padding:15px 12px;font-weight:600;font-size:16px;width:100%;background:var(--sunk);border:1px solid var(--line)}
.btn.primary{background:var(--ink);color:var(--ink-fg);border-color:var(--ink)}
.btn.primary:disabled{opacity:.45;cursor:default}
.btn.give{background:var(--give);border-color:var(--give);color:#fff}

.tabbar{display:flex;justify-content:center;gap:6px;border-top:1px solid var(--line);padding:8px 10px;flex-wrap:wrap}
.tabbar button{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:8px;font-size:14px}
.tabbar button[aria-selected="true"]{background:var(--sunk);font-weight:600}
.tabbar svg{width:19px;height:19px}

.page{padding:22px 24px;overflow:auto;display:flex;flex-direction:column;gap:14px;min-height:0}
.page h2{margin:0;font-size:22px}
.badge{font-size:12px;font-weight:600;padding:3px 8px;border-radius:999px;background:var(--sunk);color:var(--muted)}
.badge.red{color:var(--warn)}
.badge.green{color:var(--give);background:var(--give-soft)}
.stat{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.stat div{border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.stat b{display:block;font-size:28px;margin-top:4px}
.stat span{font-size:13px;color:var(--muted)}
.note{font-size:13px;color:var(--muted);max-width:62ch;line-height:1.5}

/* overlays */
.scrim{position:fixed;inset:0;background:var(--scrim);display:grid;place-items:center;padding:20px max(16px,env(safe-area-inset-left,0px));z-index:20}
.sheet{background:var(--surface);border-radius:16px;width:min(560px,100%);max-height:min(720px,100%);display:flex;flex-direction:column;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.sheet-h{display:flex;align-items:center;gap:12px;padding:16px 18px 6px}
.sheet-h h3{margin:0;font-size:22px;flex:1}
.sheet-b{padding:8px 18px 18px;overflow:auto;display:flex;flex-direction:column;gap:12px}
.search{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:999px;padding:10px 16px}
.search input{border:0;background:none;font:inherit;color:var(--fg);flex:1;min-width:0;outline:none}
.field{border:1px solid var(--line);border-radius:10px;padding:12px 14px;font:inherit;color:var(--fg);background:var(--surface);width:100%}

.pay{display:grid;grid-template-columns:minmax(0,1fr) 300px;width:min(1000px,100%);max-height:100%;background:var(--surface);border-radius:16px;overflow:hidden}
.pay-l{padding:22px 26px;display:flex;flex-direction:column;gap:16px;overflow:auto}
.pay-total{text-align:center;font-size:46px;font-weight:700;margin-top:10px}
.pay-sub{text-align:center;color:var(--muted);font-size:14px;margin-top:-10px}
.cashrow{display:flex;flex-wrap:wrap;gap:8px;border-block:1px solid var(--line);padding:12px 0}
.cashrow button{padding:10px 14px;border-radius:8px;font-weight:600}
.cashrow button:hover{background:var(--sunk)}
.payopt{display:flex;justify-content:space-between;align-items:center;padding:15px 4px;border-bottom:1px solid var(--line);text-align:left;width:100%;font-weight:600}
.payopt:hover{background:var(--sunk)}
.payopt .sub{display:block;font-weight:400;font-size:13px;color:var(--muted)}
.pay-r{background:var(--sunk);border-left:1px solid var(--line);padding:22px 20px;display:flex;flex-direction:column;align-items:center;gap:12px}
.pay-r .cap{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}

.terminal{width:230px;max-width:100%;background:var(--term);color:var(--term-fg);border-radius:26px;padding:14px 14px 22px;box-shadow:0 14px 34px rgba(0,0,0,.28)}
.t-screen{background:#22272d;border-radius:14px;min-height:300px;padding:18px 14px;display:flex;flex-direction:column;gap:12px;text-align:center}
.t-title{font-size:19px;font-weight:700;line-height:1.25;text-wrap:balance}
.t-body{font-size:13.5px;color:#c4cbd2;line-height:1.45}
.t-amt{font-size:30px;font-weight:700}
.t-btn{border-radius:10px;padding:12px;font-weight:700;font-size:15px}
.t-yes{background:var(--give);color:#fff}
.t-no{background:#3a4148;color:#f2f4f5}
.t-idle{margin:auto 0;color:#9aa3ad;font-size:14px}
.t-btn:disabled{opacity:.4;cursor:default}
.tchoice{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.tchoice .t-btn{font-size:22px;padding:16px 0}
.tchoice3{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.tchoice3 .t-btn{font-size:19px;padding:14px 0}
.btn.give:disabled{opacity:.45;cursor:default}
.tpad{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.tpad button{background:#3a4148;color:#f2f4f5;border-radius:8px;padding:9px 0;font-size:17px;font-weight:600}
.t-tap{margin:auto 0;display:grid;gap:10px;justify-items:center}
.t-tap svg{width:54px;height:54px}

.done{text-align:center;padding:30px 24px;display:flex;flex-direction:column;gap:14px;align-items:center}
.done .tick{width:64px;height:64px;border-radius:50%;background:var(--give-soft);color:var(--give);display:grid;place-items:center}
.done .tick svg{width:34px;height:34px}
.done .big{font-size:40px;font-weight:700}
.done .give-msg{background:var(--give-soft);color:var(--give);padding:8px 14px;border-radius:10px;font-weight:600;font-size:14px}
.done .btns{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:min(420px,100%)}

.wp{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.wp button{border:1px solid var(--line);border-radius:10px;font-size:22px;padding:12px 0}
.wp-read{font-size:40px;font-weight:700;text-align:center}
.wp-calc{text-align:center;color:var(--muted)}

@media (max-width:860px){
  body{padding-block:10px}
  .app{height:auto;min-height:0}
  .main{grid-template-columns:1fr}
  .right{border-left:0;border-top:1px solid var(--line)}
  .left{max-height:none}
  .grid{max-height:none;overflow:visible}
  .lines{max-height:260px}
  .pay{grid-template-columns:1fr}
  .pay-r{border-left:0;border-top:1px solid var(--line)}
  .tabbar button span{display:none}
}
@media (prefers-reduced-motion:no-preference){
  .sheet,.pay{animation:up .18s ease-out}
  @keyframes up{from{transform:translateY(10px);opacity:.6}to{transform:none;opacity:1}}
}