:root{--bg:#f3f3f1;--panel:#fff;--text:#111;--muted:#777;--line:#e5e5e2;--black:#0b0b0b}
*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}
button,input,select,textarea{font:inherit}button{cursor:pointer}.app{min-height:100vh;display:grid;grid-template-columns:240px 1fr}
aside{background:#090909;color:white;padding:28px 20px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}
.brand{font-size:27px;font-weight:900;letter-spacing:-1px}.brand span{font-weight:400}.sub{font-size:10px;letter-spacing:3px;color:#777;margin:4px 0 28px}
nav{display:grid;gap:5px;overflow:auto}.nav{border:0;background:transparent;color:#aaa;padding:11px 13px;text-align:left;border-radius:10px}.nav.active,.nav:hover{background:#1c1c1c;color:#fff}
.aside-bottom{margin-top:auto;padding-top:16px;font-size:12px;color:#aaa}.logout{margin-top:8px;background:#222;color:#fff;border:0;border-radius:8px;padding:8px 10px;width:100%}
main{padding:28px;min-width:0}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}header h1{margin:0;font-size:28px}header p{margin:4px 0;color:var(--muted)}.status{font-size:12px;font-weight:800}
.page{display:none}.page.active{display:block}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:12px}.card,.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.card span{color:var(--muted);font-size:12px}.card strong{display:block;font-size:28px;margin-top:10px}.panel{margin-bottom:12px}.panel h2{margin:0 0 14px}
input,select,textarea{width:100%;border:1px solid #ddd;background:#fff;border-radius:10px;padding:11px;outline:none}input:focus,select:focus,textarea:focus{border-color:#111}
label{display:grid;gap:6px;font-size:12px;font-weight:700;margin-bottom:10px}.primary,.secondary,.icon{border:0;border-radius:10px;padding:11px 14px}.primary{background:#111;color:#fff}.secondary{background:#eee;color:#111}.big{width:100%;padding:14px;font-weight:800}.linkbtn{text-decoration:none;display:inline-block}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.toolbar h2{margin:0}.table-wrap{overflow:auto;margin-top:12px}table{border-collapse:collapse;width:100%;min-width:780px}th,td{padding:11px;border-bottom:1px solid var(--line);font-size:12px;text-align:left}th{color:var(--muted)}
.pos-grid{display:grid;grid-template-columns:1fr 330px;gap:12px}.scan{font-size:18px;padding:15px}.checkout{height:max-content;position:sticky;top:20px}.grand{font-size:36px;font-weight:900;margin:7px 0 14px}.total-label{color:var(--muted)}
.cart-item{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.cart-item small{display:block;color:var(--muted)}.qty{display:flex;gap:7px;align-items:center}.qty button{border:0;border-radius:7px;width:28px;height:28px}
.row{display:grid;grid-template-columns:2fr 1fr 2fr auto;gap:9px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.form-card{max-width:620px}
.modal{position:fixed;inset:0;background:#0008;display:none;align-items:center;justify-content:center;padding:18px}.modal.show{display:flex}.modal-card{background:#fff;border-radius:18px;width:min(720px,100%);max-height:92vh;overflow:auto;padding:20px}.icon{background:#eee}
#toast{position:fixed;right:18px;bottom:18px;background:#111;color:#fff;padding:12px 15px;border-radius:10px;display:none;max-width:350px}
.login-body{min-height:100vh;display:grid;place-items:center;background:#0b0b0b}.login-card{width:min(390px,92vw);background:#fff;border-radius:20px;padding:28px}.bigbrand{font-size:34px}.login-card p{color:#777}.login-note{font-size:12px;color:#777;margin-top:14px;line-height:1.5}
@media(max-width:900px){.app{grid-template-columns:1fr}aside{position:static;height:auto;padding:14px}nav{display:flex;overflow:auto}.nav{white-space:nowrap}.aside-bottom{display:flex;gap:10px;align-items:center}.logout{width:auto;margin:0}.sub{margin-bottom:10px}.cards{grid-template-columns:1fr 1fr}.pos-grid{grid-template-columns:1fr}.checkout{position:static}.row,.form-grid{grid-template-columns:1fr}main{padding:15px}}

.network-box{display:grid;grid-template-columns:1fr 170px;gap:18px;align-items:center}
.network-url{font-size:22px;font-weight:900;word-break:break-all;margin:8px 0}
.network-actions{display:flex;gap:8px;margin-top:12px}
.qr-wrap{background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;display:grid;place-items:center}
.qr-wrap img{width:145px;height:145px;object-fit:contain}
.network-help{font-size:12px;line-height:1.7;margin-top:14px;color:#555}
.warning-box{margin-top:12px;background:#fff8dc;border:1px solid #eadb9a;border-radius:10px;padding:11px;font-size:12px;line-height:1.5}
@media(max-width:650px){
 .network-box{grid-template-columns:1fr}
 .qr-wrap{width:170px}
 .network-url{font-size:17px}
 header h1{font-size:23px}
 .cards{grid-template-columns:1fr}
 .card strong{font-size:24px}
}

/* =========================================================
   SESSION24 POS — STEP 7 UI STABILITY / RESPONSIVE PASS
   Desktop / iPad / iPhone
   ========================================================= */

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  background:var(--bg);
}

html,body{
  width:100%;
  min-height:100%;
}

body{
  min-height:100vh;
  min-height:100dvh;
  overflow-x:hidden;
}

button,input,select,textarea{
  max-width:100%;
}

button,.primary,.secondary,.icon,.nav,.logout{
  min-height:44px;
  touch-action:manipulation;
  -webkit-tap-highlight-color:transparent;
}

textarea{
  min-height:88px;
  resize:vertical;
}

.app{
  min-height:100vh;
  min-height:100dvh;
}

main{
  width:100%;
  max-width:100%;
  overflow-x:hidden;
}

.page{
  min-width:0;
}

.panel,.card,.checkout{
  min-width:0;
}

.cards.six{
  grid-template-columns:repeat(3,minmax(0,1fr));
}

.toolbar > *{
  min-width:0;
}

.toolbar > div{
  min-width:0;
}

.table-wrap{
  width:100%;
  max-width:100%;
  overflow-x:auto;
  overflow-y:hidden;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior-x:contain;
}

table{
  max-width:none;
}

.checkout{
  max-height:calc(100dvh - 40px);
  overflow-y:auto;
  overscroll-behavior:contain;
  -webkit-overflow-scrolling:touch;
  scrollbar-gutter:stable;
  padding-bottom:max(18px,env(safe-area-inset-bottom));
}

.checkout .big{
  min-height:48px;
}

.grand{
  overflow-wrap:anywhere;
  line-height:1.08;
}

.modal{
  z-index:1000;
  padding:
    max(18px,env(safe-area-inset-top))
    max(18px,env(safe-area-inset-right))
    max(18px,env(safe-area-inset-bottom))
    max(18px,env(safe-area-inset-left));
}

.modal-card{
  max-height:calc(100dvh - 36px);
  overscroll-behavior:contain;
  -webkit-overflow-scrolling:touch;
}

#toast{
  z-index:1100;
  max-width:min(350px,calc(100vw - 36px));
  bottom:max(18px,env(safe-area-inset-bottom));
  right:max(18px,env(safe-area-inset-right));
}

@media (min-width:901px){
  aside{
    height:100vh;
    height:100dvh;
    overflow:hidden;
  }

  aside nav{
    min-height:0;
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
  }

  .pos-grid{
    grid-template-columns:minmax(0,1fr) minmax(310px,330px);
    align-items:start;
  }
}

/* iPad portrait / smaller tablets */
@media (max-width:900px){
  .app{
    display:block;
  }

  aside{
    position:sticky;
    top:0;
    z-index:100;
    height:auto;
    padding:
      max(12px,env(safe-area-inset-top))
      max(14px,env(safe-area-inset-right))
      12px
      max(14px,env(safe-area-inset-left));
  }

  aside .brand{
    font-size:22px;
  }

  aside .sub{
    margin:2px 0 8px;
  }

  aside nav{
    display:flex;
    gap:6px;
    width:100%;
    overflow-x:auto;
    overflow-y:hidden;
    padding-bottom:3px;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }

  aside nav::-webkit-scrollbar{
    display:none;
  }

  .nav{
    flex:0 0 auto;
    padding:10px 13px;
  }

  .aside-bottom{
    display:flex;
    align-items:center;
    justify-content:flex-end;
    gap:8px;
    width:100%;
    margin-top:8px;
    padding-top:8px;
    border-top:1px solid #1f1f1f;
    min-width:0;
  }

  .aside-bottom #meText{
    flex:1 1 auto;
    min-width:0;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
  }

  .aside-bottom .logout{
    flex:0 0 auto;
    width:auto;
    margin:0;
    padding:9px 12px;
  }

  main{
    padding:
      16px
      max(15px,env(safe-area-inset-right))
      max(24px,env(safe-area-inset-bottom))
      max(15px,env(safe-area-inset-left));
  }

  header{
    gap:12px;
    align-items:flex-start;
  }

  .cards,
  .cards.six{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }

  .pos-grid{
    display:grid;
    grid-template-columns:minmax(0,1fr);
    gap:12px;
  }

  .checkout{
    position:static;
    max-height:none;
    overflow:visible;
    padding-bottom:max(22px,env(safe-area-inset-bottom));
  }

  .row,
  .form-grid{
    grid-template-columns:1fr;
  }

  .toolbar{
    flex-wrap:wrap;
    align-items:flex-start;
  }

  .toolbar > div{
    max-width:100%;
  }

  .network-actions{
    flex-wrap:wrap;
  }
}

/* iPhone / narrow mobile */
@media (max-width:650px){
  main{
    padding:
      12px
      max(10px,env(safe-area-inset-right))
      max(24px,env(safe-area-inset-bottom))
      max(10px,env(safe-area-inset-left));
  }

  header{
    margin-bottom:14px;
  }

  header h1{
    font-size:22px;
  }

  header p{
    font-size:12px;
  }

  .status{
    white-space:nowrap;
    padding-top:4px;
  }

  .cards,
  .cards.six{
    grid-template-columns:1fr;
    gap:9px;
  }

  .card,.panel{
    border-radius:14px;
    padding:14px;
  }

  .card strong{
    font-size:24px;
    overflow-wrap:anywhere;
  }

  .panel h2{
    font-size:19px;
  }

  input,select,textarea{
    font-size:16px;
    min-height:44px;
    padding:11px 12px;
  }

  .scan{
    font-size:16px;
  }

  .money-input{
    grid-template-columns:minmax(0,1fr) 105px;
  }

  .toolbar{
    display:flex;
    gap:8px;
  }

  .toolbar > div{
    width:100%;
  }

  .toolbar .primary,
  .toolbar .secondary,
  .toolbar .linkbtn{
    max-width:100%;
  }

  .cart-item{
    grid-template-columns:minmax(0,1fr) auto;
  }

  .cart-item > :last-child{
    grid-column:1 / -1;
  }

  .grand{
    font-size:30px;
  }

  #foreignTotal{
    font-size:25px !important;
  }

  .checkout .big{
    width:100%;
    min-height:50px;
  }

  .checkout #clearCartBtn{
    margin-top:8px;
  }

  .modal{
    align-items:flex-end;
    padding:
      max(10px,env(safe-area-inset-top))
      max(8px,env(safe-area-inset-right))
      max(8px,env(safe-area-inset-bottom))
      max(8px,env(safe-area-inset-left));
  }

  .modal-card{
    width:100%;
    max-height:calc(100dvh - max(18px,env(safe-area-inset-top)));
    border-radius:18px 18px 12px 12px;
    padding:16px;
  }

  #toast{
    left:max(10px,env(safe-area-inset-left));
    right:max(10px,env(safe-area-inset-right));
    bottom:max(10px,env(safe-area-inset-bottom));
    max-width:none;
  }

  .refund-line{
    grid-template-columns:minmax(0,1fr) 80px;
    gap:8px;
  }

  .network-actions > *{
    flex:1 1 auto;
  }

  .aside-bottom{
    gap:6px;
  }

  .aside-bottom #meText{
    font-size:11px;
  }

  .aside-bottom .logout{
    min-height:44px;
    padding:9px 11px;
    white-space:nowrap;
  }
}

/* Short-height devices and iPad landscape */
@media (min-width:901px) and (max-height:820px){
  main{
    padding-top:18px;
    padding-bottom:18px;
  }

  .checkout{
    top:12px;
    max-height:calc(100dvh - 24px);
  }

  .checkout label{
    margin-bottom:8px;
  }

  .checkout input,
  .checkout select,
  .checkout textarea{
    padding-top:9px;
    padding-bottom:9px;
  }

  .checkout .grand{
    font-size:31px;
    margin:5px 0 10px;
  }

  #foreignTotal{
    font-size:25px !important;
  }
}

/* iPad/tablet landscape: keep POS in two columns without clipping */
@media (min-width:701px) and (max-width:1180px) and (orientation:landscape){
  .pos-grid{
    grid-template-columns:minmax(0,1fr) minmax(300px,36%);
    align-items:start;
  }

  .checkout{
    position:sticky;
    top:12px;
    max-height:calc(100dvh - 24px);
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
  }
}