:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f1f3f6;
  --border: #e2e5ea;
  --text: #16181d;
  --muted: #6b7280;
  --accent: #d9457a;
  --accent-ink: #ffffff;
  --accent-soft: #fdeef4;
  --ok: #197f52;
  --warn: #a86a00;
  --danger: #c1362c;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 18, 23, .06), 0 8px 24px rgba(16, 18, 23, .06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --surface: #16191e;
    --surface-2: #1d2127;
    --border: #2a2f37;
    --text: #e8eaee;
    --muted: #98a0ac;
    --accent: #f2739f;
    --accent-ink: #1a0a11;
    --accent-soft: #2a1520;
    --ok: #55c48c;
    --warn: #e0ac4a;
    --danger: #f0796d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
        "Noto Sans Thai", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px 64px; }

header.top {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  margin-bottom: 28px;
}
header.top .wrap {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: 10px; margin-right: auto; text-decoration: none; color: inherit; }
.brand b { font-size: 16px; letter-spacing: -.01em; }
.brand span { color: var(--muted); font-size: 13px; }
.who { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 10px; }
.who strong { color: var(--text); font-weight: 600; }

h1 { font-size: 26px; letter-spacing: -.02em; margin: 0 0 6px; }
h2 { font-size: 15px; margin: 0 0 14px; letter-spacing: -.01em; }
p.lede { color: var(--muted); margin: 0 0 24px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}

label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.hint { color: var(--muted); font-size: 12.5px; margin-top: 6px; }

input[type=text], input[type=password], input[type=file] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
}
input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.field + .field { margin-top: 16px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit; font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { filter: brightness(1.06); }
.btn:disabled { opacity: .55; cursor: not-allowed; filter: none; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn.small { padding: 6px 12px; font-size: 13px; }
.btn.block { width: 100%; }

.quota { margin-bottom: 18px; }
.quota .row { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.bar { height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; border: 1px solid var(--border); }
.bar > i { display: block; height: 100%; background: var(--accent); transition: width .3s; }
.bar.warn > i { background: var(--warn); }
.bar.full > i { background: var(--danger); }

.notice {
  border-radius: 10px; padding: 12px 14px; font-size: 14px;
  border: 1px solid var(--border); background: var(--surface-2); margin-bottom: 18px;
}
.notice.error { border-color: var(--danger); color: var(--danger); background: transparent; }
.notice.ok { border-color: var(--ok); color: var(--ok); background: transparent; }

.code-out { text-align: center; padding: 26px 20px; }
.code-out .digits {
  font: 700 40px/1.1 ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  letter-spacing: .18em;
  color: var(--accent);
  margin: 10px 0 4px;
  word-break: break-all;
}

.code-input {
  font: 700 28px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .3em;
  text-align: center;
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; padding: 0 10px 8px 0; }
td { padding: 10px 10px 10px 0; border-top: 1px solid var(--border); vertical-align: middle; }
td.name { word-break: break-word; }
td .sub { color: var(--muted); font-size: 12.5px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 600; letter-spacing: .08em; }
.tag { display: inline-block; font-size: 11.5px; padding: 2px 7px; border-radius: 99px; border: 1px solid var(--border); color: var(--muted); }
.empty { color: var(--muted); font-size: 14px; padding: 6px 0; }

.split { display: grid; gap: 18px; grid-template-columns: 1fr 1fr; }
@media (max-width: 720px) { .split { grid-template-columns: 1fr; } }

footer.foot { color: var(--muted); font-size: 12.5px; text-align: center; padding: 8px 0 0; }

.landing { text-align: center; padding: 48px 24px; }
.landing h1 { font-size: 30px; }
.landing p { color: var(--muted); max-width: 44ch; margin: 0 auto 26px; }

progress { width: 100%; height: 8px; }