:root{
  --bg:#f4f6fb;
  --card:#ffffff;
  --line:#e5eaf4;
  --txt:#0f172a;
  --mut:#64748b;

  --pri:#2563eb;      /* biru ala Android */
  --pri2:#1d4ed8;
  --danger:#ef4444;

  --shadow: 0 10px 26px rgba(2,6,23,.08);
  --shadow2: 0 8px 18px rgba(2,6,23,.10);
}

/* base */
*{box-sizing:border-box;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial}
body{margin:0;color:var(--txt);background:var(--bg)}
a{color:#2563eb;text-decoration:none}

/* login bg */
.bg{
  min-height:100vh;
  background:linear-gradient(180deg,#f4f6fb,#eef2ff);
  display:flex;align-items:center;justify-content:center;
  padding:16px
}

/* card */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:18px;
  box-shadow:var(--shadow);
  max-width:460px;width:100%
}
.center{text-align:left}
h2{margin:0 0 6px}
.muted{color:var(--mut);margin:0 0 14px}

/* form */
label{display:block;color:var(--mut);font-size:13px;margin-top:10px}
input,select{
  width:100%;
  padding:12px;
  border-radius:16px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--txt);
  outline:none
}
input:focus,select:focus{
  border-color:#93c5fd;
  box-shadow:0 0 0 4px rgba(37,99,235,.15);
}

/* buttons (material-ish) */
.btn{
  position:relative;
  padding:12px 14px;
  border:0;
  border-radius:16px;
  background:linear-gradient(180deg,var(--pri),var(--pri2));
  color:#fff;
  font-weight:800;
  cursor:pointer;
  margin-top:14px;
  box-shadow:0 10px 18px rgba(37,99,235,.22);
  user-select:none;
}
.btn:active{transform:translateY(1px)}
.btn.full{width:100%}
.btn.gray{
  background:#e2e8f0;
  color:#0f172a;
  box-shadow:none;
}
.btn.danger{
  background:linear-gradient(180deg,#fb7185,#ef4444);
  color:#fff;
  box-shadow:0 10px 18px rgba(239,68,68,.18);
}

/* ripple effect (biar terasa android) */
.btn::after{
  content:"";
  position:absolute;left:50%;top:50%;
  width:10px;height:10px;border-radius:999px;
  transform:translate(-50%,-50%) scale(1);
  opacity:0;
  background:rgba(255,255,255,.45);
  pointer-events:none;
}
.btn:active::after{
  width:240px;height:240px;opacity:1;
  transition:width .25s ease,height .25s ease,opacity .6s ease;
}

/* alerts */
.alert{
  background:rgba(239,68,68,.08);
  border:1px solid rgba(239,68,68,.25);
  padding:10px;
  border-radius:16px;
  margin:10px 0
}
.hint{color:var(--mut);font-size:12px;margin-top:12px}

/* appbar (topbar) */
.topbar{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.86);
  backdrop-filter: blur(12px);
  border-bottom:1px solid var(--line);
  padding:12px;
  display:flex;gap:10px;align-items:center
}

/* container & grid */
.container{max-width:980px;margin:0 auto;padding:12px}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media(min-width:700px){.grid{grid-template-columns:repeat(4,minmax(0,1fr));}}

/* product item card */
.item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  padding:12px;
  box-shadow:var(--shadow2);
}
.item .name{font-weight:900;font-size:14px;line-height:1.2}
.item .price{color:#16a34a;font-weight:900;margin-top:8px}
.item .stok{color:var(--mut);font-size:12px;margin-top:6px}

/* row */
.row{display:flex;gap:10px;align-items:center}

/* badge/chip ala android */
.badge{
  padding:6px 10px;
  border-radius:999px;
  font-size:12px;
  background:#f1f5f9;
  color:#0f172a;
  border:1px solid var(--line);
  font-weight:800
}

/* bottom bar (mirip bottom app bar) */
.bottombar{
  position:sticky;bottom:0;z-index:20;
  background:rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-top:1px solid var(--line);
  padding:12px;
  display:flex;gap:10px;align-items:center;justify-content:space-between
}

.small{font-size:12px;color:var(--mut)}

/* table */
table{width:100%;border-collapse:collapse}
td,th{
  padding:10px;
  border-bottom:1px solid var(--line);
  text-align:left;
  font-size:14px
}
th{font-weight:900}

/* print */
.print-wrap{max-width:320px;margin:0 auto;padding:10px;font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;color:#111}
@media print{
  body{background:#fff}
  .no-print{display:none!important}
  .print-wrap{max-width:320px}
}