:root {
  --bg: #f5f4f0;
  --surface: #ffffff;
  --surface-2: #f0efe9;
  --text: #1d2321;
  --muted: #5d6763;
  --line: #dcdbd3;
  --accent: #0f6b52;
  --accent-strong: #0a5340;
  --accent-text: #ffffff;
  --ok: #0f6b52;
  --warn: #8a5a00;
  --warn-bg: #fbf1da;
  --danger: #a4291f;
  --danger-bg: #fbe9e6;
  --radius: 10px;
  --shadow: 0 1px 2px rgb(20 30 25 / 8%);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131715;
    --surface: #1c211f;
    --surface-2: #252b28;
    --text: #e9ecea;
    --muted: #a0aaa5;
    --line: #333a37;
    --accent: #3fb48f;
    --accent-strong: #5cc9a5;
    --accent-text: #0a1d16;
    --ok: #5cc9a5;
    --warn: #e6b65c;
    --warn-bg: #33290f;
    --danger: #f08a7e;
    --danger-bg: #3a1c18;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
}
main { flex: 1; width: 100%; max-width: 1040px; margin: 0 auto; padding: 16px; }
h1, h2, h3 { line-height: 1.25; margin: 0; font-weight: 650; }
h1 { font-size: 1.25rem; }
h2 { font-size: 1.1rem; }
p { margin: 0; }
.muted { color: var(--muted); font-size: .92rem; }
.loading { padding: 48px 0; text-align: center; color: var(--muted); }
.site-footer { padding: 16px; text-align: center; font-size: .85rem; }
.site-footer a { color: var(--muted); }

/* Üst bant */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.topbar .who { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tabs { display: flex; gap: 4px; margin-bottom: 16px; overflow-x: auto; border-bottom: 1px solid var(--line); }
.tabs button {
  appearance: none; background: none; border: 0; border-bottom: 2px solid transparent; color: var(--muted);
  padding: 12px 14px; min-height: 44px; font: inherit; font-weight: 600; cursor: pointer; white-space: nowrap;
}
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }

/* Düğme ve form */
button.btn, a.btn {
  appearance: none; display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 8px 16px;
  border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--text); font: inherit; font-weight: 600; cursor: pointer;
}
button.btn:hover { background: var(--surface-2); }
button.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.btn.primary:hover { background: var(--accent-strong); }
button.btn.danger { color: var(--danger); }
button.btn:disabled { opacity: .55; cursor: default; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
label.field { display: block; margin-bottom: 12px; font-weight: 600; font-size: .95rem; }
label.field .muted { display: block; font-weight: 400; }
input, select {
  display: block; width: 100%; min-height: 44px; margin-top: 4px; padding: 8px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text); font: inherit; font-weight: 400;
}
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.row.end { justify-content: flex-end; }
.spread { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.section { margin-top: 24px; }
.range { margin-bottom: 12px; }
.notice { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; background: var(--warn-bg); color: var(--warn); }
.notice.error { background: var(--danger-bg); color: var(--danger); }

/* Giriş */
.login { max-width: 380px; margin: 8dvh auto 0; background: var(--surface); padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); }
.login h1 { margin-bottom: 4px; }
.login p { margin-bottom: 16px; }
.login button { width: 100%; }

/* Kart ve tablo */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.stat .value { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: .85rem; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.actions { text-align: right; }
td.actions .row { justify-content: flex-end; }
.empty { padding: 32px 16px; text-align: center; color: var(--muted); }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .85rem; font-weight: 600; background: var(--surface-2); color: var(--muted); }
.badge.ok { color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.code { font-family: ui-monospace, Consolas, monospace; font-size: .95em; }

/* Eşleşme kodu */
.pair-code { font: 700 2.4rem/1.2 ui-monospace, Consolas, monospace; letter-spacing: .18em; text-align: center; padding: 16px; margin: 12px 0; background: var(--surface-2); border-radius: 8px; user-select: all; }

dialog { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--text); padding: 20px; width: min(440px, calc(100vw - 32px)); }
dialog::backdrop { background: rgb(0 0 0 / 45%); }
dialog h2 { margin-bottom: 12px; }

/* Telefon: tablo satırları karta döner; sayfa yatay kaymaz */
@media (max-width: 640px) {
  main { padding: 12px 16px; }
  thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  tr { display: block; padding: 10px 14px; border-bottom: 1px solid var(--line); }
  tr:last-child { border-bottom: 0; }
  td { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; border: 0; text-align: right; }
  td::before { content: attr(data-label); color: var(--muted); font-size: .88rem; text-align: left; }
  td.actions { display: block; padding-top: 8px; }
  td.actions::before { content: none; }
  td.actions .row { justify-content: stretch; }
  td.actions .btn { flex: 1; }
}
@media (prefers-reduced-motion: no-preference) {
  button.btn, .tabs button { transition: background-color .12s ease, color .12s ease; }
}