:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --ink: #1d2733;
  --muted: #5d6b7a;
  --line: #d9dee4;
  --brand: #1f5fa8;
  --brand-ink: #ffffff;
  --ok-bg: #e6f4ea;
  --ok-ink: #1e6b34;
  --err-bg: #fdecea;
  --err-ink: #a12a1f;
  --warn-bg: #fff6e0;
  --warn-ink: #8a5a00;
  --code-bg: #eef1f4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12171d;
    --card: #1b232c;
    --ink: #e4e9ee;
    --muted: #9aa7b4;
    --line: #2e3a46;
    --brand: #4d8fd8;
    --brand-ink: #0b1118;
    --ok-bg: #173323;
    --ok-ink: #8fd6a4;
    --err-bg: #3a1c19;
    --err-ink: #f2a39a;
    --warn-bg: #3a2f14;
    --warn-ink: #f0cf84;
    --code-bg: #232d38;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
a { color: var(--brand); }
h1 { font-size: 1.4rem; margin: 0 0 .75rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 .5rem; }
code, pre { background: var(--code-bg); border-radius: 4px; font-family: ui-monospace, Consolas, monospace; font-size: .9em; }
code { padding: .1em .35em; }
pre { padding: .75rem; overflow-x: auto; white-space: pre-wrap; word-break: break-word; }

.btn {
  display: inline-block; border: 0; border-radius: 8px; padding: .6rem 1rem;
  background: var(--brand); color: var(--brand-ink); font: inherit; font-weight: 600;
  cursor: pointer; text-align: center; text-decoration: none;
}
.btn.alt { background: var(--card); color: var(--brand); border: 2px solid var(--brand); }
.btn.small { padding: .3rem .6rem; font-size: .9rem; }
.btn.danger { background: var(--err-ink); color: var(--card); }
.btn:disabled { opacity: .6; cursor: default; }
.btn.big { display: block; width: 100%; padding: 1rem; font-size: 1.1rem; margin: .5rem 0; }

.flash { padding: .7rem 1rem; border-radius: 8px; margin: 0 0 1rem; background: var(--ok-bg); color: var(--ok-ink); }
.flash.err { background: var(--err-bg); color: var(--err-ink); }
.flash.warn { background: var(--warn-bg); color: var(--warn-ink); }
.flash.pre { white-space: pre-wrap; word-break: break-word; }

input[type=text], input[type=password], input[type=number], input:not([type]), select, textarea {
  font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-radius: 6px; padding: .5rem .6rem; width: 100%;
}
label.field { display: block; margin: .6rem 0; }
label.field span { display: block; font-size: .9rem; color: var(--muted); margin-bottom: .2rem; }

/* Phone page */
body.phone { min-height: 100vh; padding: 16px; }
.phone-card { max-width: 480px; margin: 0 auto; background: var(--card); border-radius: 12px; padding: 1.25rem; }
.phone .for { color: var(--muted); margin-top: 0; }
.phone .tip { font-size: .9rem; color: var(--muted); }
.phone .send { margin-top: 1rem; }
.phone .count { font-size: .9rem; color: var(--muted); text-align: center; }
.phone .status { font-weight: 600; color: var(--ok-ink); }
.phone .status.err { color: var(--err-ink); }
.code-form { display: grid; gap: .5rem; }
.queue { list-style: none; padding: 0; margin: 1rem 0 0; }
.queue li { display: grid; grid-template-columns: 56px 1fr; grid-template-rows: auto auto; column-gap: .75rem; padding: .5rem 0; border-top: 1px solid var(--line); }
.queue .thumb { grid-row: span 2; width: 56px; height: 56px; border-radius: 6px; background: var(--code-bg); overflow: hidden; }
.queue .thumb img { width: 100%; height: 100%; object-fit: cover; }
.queue .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.queue .state { font-size: .9rem; color: var(--muted); }
.queue li.err .state { color: var(--err-ink); }

/* Admin */
header.top { background: var(--card); border-bottom: 1px solid var(--line); padding: .6rem 16px; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; align-items: center; }
header.top .brand { font-weight: 700; }
header.top nav { display: flex; flex-wrap: wrap; gap: .25rem; }
header.top nav a { padding: .3rem .6rem; border-radius: 6px; text-decoration: none; color: var(--ink); }
header.top nav a.on { background: var(--brand); color: var(--brand-ink); }
body.admin main, body.plain main { max-width: 1100px; margin: 0 auto; padding: 1rem 16px 3rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 1rem; margin: 0 0 1rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.tile .num { font-size: 1.6rem; font-weight: 700; }
.tile .lbl { color: var(--muted); font-size: .9rem; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .85rem; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.badge { display: inline-block; padding: .05rem .5rem; border-radius: 99px; font-size: .8rem; background: var(--code-bg); }
.badge.ok { background: var(--ok-bg); color: var(--ok-ink); }
.badge.err { background: var(--err-bg); color: var(--err-ink); }
.badge.warn { background: var(--warn-bg); color: var(--warn-ink); }
.checks li { margin: .2rem 0; }
.token { font-family: ui-monospace, Consolas, monospace; font-size: 1rem; word-break: break-all; background: var(--code-bg); padding: .6rem; border-radius: 6px; user-select: all; }
.qr { background: #fff; padding: 8px; border-radius: 8px; width: 240px; max-width: 100%; }
.inline-form { display: inline; }
.row-actions { display: flex; flex-wrap: wrap; gap: .3rem; }
.muted { color: var(--muted); }
.login { max-width: 360px; margin: 10vh auto; }