:root {
  --bg: #f3f5f9;
  --card: #ffffff;
  --ink: #1a2333;
  --muted: #64748b;
  --line: #e2e8f0;
  --brand: #0b57d0;
  --brand-dark: #0842a0;
  --ok: #15803d;
  --warn: #b45309;
  --bad: #b91c1c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
}

a { color: var(--brand); text-decoration: none; }

/* ---- topbar ---- */
.topbar {
  background: #0d1b3e;
  color: #fff;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.topbar .logo { font-size: 18px; font-weight: 700; letter-spacing: .3px; }
.topbar .logo span { color: #7fb0ff; }
.topbar .sub { color: #b9c6e4; font-size: 13px; }
.topbar .right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.topbar button { background: rgba(255,255,255,.12); color: #fff; border: 0; }
.topbar button:hover { background: rgba(255,255,255,.22); }

.banner {
  padding: 8px 24px;
  background: #fef3c7;
  color: #92400e;
  font-size: 14px;
}
.banner.red { background: #fee2e2; color: #991b1b; }

/* ---- layout ---- */
.wrap { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 { margin: 0 0 14px; font-size: 17px; }
.card h2 small { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 8px; }

.grid { display: grid; gap: 16px; }
.grid.k3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.kpi { padding: 14px 18px; }
.kpi .lbl { color: var(--muted); font-size: 13px; }
.kpi .val { font-size: 24px; font-weight: 700; margin-top: 2px; }

/* ---- tabs ---- */
.tabs { display: flex; gap: 4px; margin-bottom: 16px; flex-wrap: wrap; }
.tabs button {
  background: transparent;
  color: var(--muted);
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  padding: 8px 14px;
  font-size: 15px;
}
.tabs button.on { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }

/* ---- tables ---- */
.tblwrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .4px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.total td { font-weight: 700; border-top: 2px solid var(--ink); }
tbody tr:hover { background: #f8fafc; }

.pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 99px;
  font-size: 12.5px;
  font-weight: 600;
}
.pill.acik { background: #fef3c7; color: #92400e; }
.pill.faturalandi { background: #dbeafe; color: #1e40af; }
.pill.odendi { background: #dcfce7; color: #166534; }
.pill.iptal { background: #fee2e2; color: #991b1b; }
.pill.gri { background: #e2e8f0; color: #475569; }

/* ---- forms ---- */
input, select, textarea {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid #bfd6ff; border-color: var(--brand); }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.frow { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 12px; }
.frow > div { display: flex; flex-direction: column; }

button {
  font: inherit;
  font-weight: 600;
  padding: 9px 18px;
  border: 0;
  border-radius: 7px;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
}
button:hover { background: var(--brand-dark); }
button.sec { background: #e2e8f0; color: var(--ink); }
button.sec:hover { background: #cbd5e1; }
button.danger { background: #fee2e2; color: var(--bad); }
button.mini { padding: 4px 10px; font-size: 13px; }

.msg { margin: 10px 0; font-size: 14px; }
.msg.err { color: var(--bad); }
.msg.ok { color: var(--ok); }

/* ---- login ---- */
.login-box {
  max-width: 420px;
  margin: 9vh auto;
  padding: 0 16px;
}
.login-box .card { padding: 30px; }
.login-box h1 { font-size: 22px; margin: 0 0 4px; }
.login-box .sub { color: var(--muted); margin-bottom: 22px; }
.login-box input { width: 100%; font-size: 17px; letter-spacing: 1px; margin-bottom: 12px; }
.login-box button { width: 100%; padding: 11px; font-size: 16px; }
.login-brand { text-align: center; margin-bottom: 18px; font-size: 26px; font-weight: 800; color: #0d1b3e; }
.login-brand span { color: var(--brand); }
.foot { text-align: center; color: var(--muted); font-size: 13px; margin-top: 18px; }

.billing p { margin: 4px 0; }
.billing .k { color: var(--muted); display: inline-block; min-width: 120px; font-size: 13px; }
.hint { color: var(--muted); font-size: 13px; }