/* Brand palette derived from js9.us.png: deep navy, electric blue, cyan, violet. Dark is the default theme. */
:root {
  --bg: #07091c; --bg-glow-1: rgba(96, 196, 228, .14); --bg-glow-2: rgba(156, 95, 228, .16);
  --surface: #0f1430; --surface-2: #17294c; --ink: #e9ecfb; --ink-2: #aab3d9; --ink-3: #7681b0;
  --line: #243762; --accent: #7fd4f0; --accent-strong: #3b7bff; --violet: #9c5fe4; --accent-ink: #ffffff;
  --danger: #ff8fa3; --ok: #7be0b8; --warn: #f3c86b;
  --tag-bg: #1b2a52; --ok-bg: #0f3b35; --warn-bg: #3f3214; --error-bg: #46213a; --info-bg: #182d5c; --bar: #60c4e4;
  --topbar: #060818; --topbar-ink: #c7cff2; --topbar-line: #1b2a52;
  --btn-grad: linear-gradient(135deg, #3b7bff 0%, #9c5fe4 100%);
  --focus: #9ae6f6;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f3f5fc; --bg-glow-1: rgba(96, 196, 228, .22); --bg-glow-2: rgba(156, 95, 228, .18);
    --surface: #ffffff; --surface-2: #e9edfb; --ink: #121633; --ink-2: #4b557f; --ink-3: #7f88ad;
    --line: #d9dff2; --accent: #2457c5; --accent-strong: #2f5fd1; --violet: #7a3fd6; --accent-ink: #ffffff;
    --danger: #b3261e; --ok: #1f7a3f; --warn: #8a5c00;
    --tag-bg: #e9edfb; --ok-bg: #e0f5ec; --warn-bg: #fff2d1; --error-bg: #fde6ec; --info-bg: #e6eefe; --bar: #3b7bff;
    --focus: #2f5fd1;
  }
}
* { box-sizing: border-box; }
html { font-size: 16px; }
body { margin: 0; min-height: 100vh; color: var(--ink); font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; line-height: 1.45;
  background: radial-gradient(60rem 30rem at 15% -10%, var(--bg-glow-1), transparent 60%),
              radial-gradient(50rem 28rem at 100% 0%, var(--bg-glow-2), transparent 60%), var(--bg); background-attachment: fixed; }
a { color: var(--accent); }
h1 { font-size: 1.6rem; margin: 1.2rem 0 .8rem; }
h2 { font-size: 1.15rem; margin: 0 0 .7rem; }
h3 { font-size: 1rem; margin: 1.2rem 0 .5rem; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 16px 48px; }
.container.narrow { max-width: 640px; padding-top: 32px; }
.topbar { background: var(--topbar); border-bottom: 1px solid var(--topbar-line); }
.nav { display: flex; align-items: center; gap: 18px; height: 60px; padding-bottom: 0; }
.nav a { color: var(--topbar-ink); text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a.active { color: #fff; border-bottom-color: var(--accent); }
.nav a:hover { color: #fff; }
.nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: #fff; border: none; letter-spacing: .02em; }
.nav .brand-logo { width: 40px; height: 40px; }
.nav .btn-link { color: var(--topbar-ink); }
.nav .btn-link:hover { color: #fff; }
.hero-logo { display: block; width: 128px; height: 128px; margin: 0 auto 12px; filter: drop-shadow(0 6px 24px rgba(96, 196, 228, .35)); }
.hero-title { text-align: center; margin: 0 0 18px; font-size: 1.5rem; letter-spacing: .02em; }
.spacer { flex: 1; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin-bottom: 18px; }
.card.center { text-align: center; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px) { .grid-2 { grid-template-columns: 1fr; } }
label { display: block; margin-bottom: 12px; font-weight: 500; }
label .muted { font-weight: 400; }
label.check { font-weight: 400; }
input[type=text], input[type=url], input[type=password], input[type=email], input[type=date], input[type=file], input[type=search], select, textarea {
  display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: var(--ink); background: var(--surface-2);
  border: 1px solid var(--line); border-radius: 6px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--focus); outline-offset: 1px; }
.small-input { display: inline-block; width: 150px; margin: 0 4px 0 0; padding: 3px 6px; font-size: .85rem; }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin: 0 0 14px; }
legend { font-weight: 500; padding: 0 6px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row > label { flex: 1 1 180px; }
.hidden { display: none; }
.btn { display: inline-block; padding: 8px 14px; font: inherit; border-radius: 6px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; text-decoration: none; }
.btn:hover { border-color: var(--ink-3); }
.btn-primary { background: var(--btn-grad); color: var(--accent-ink); border-color: transparent; font-weight: 600; box-shadow: 0 2px 10px rgba(59, 123, 255, .25); }
.btn-primary:hover { filter: brightness(1.08); border-color: transparent; }
.btn-danger { color: var(--danger); }
.btn-small { padding: 5px 10px; font-size: .9rem; }
.btn-tiny { padding: 2px 7px; font-size: .78rem; }
.btn-link { background: none; border: none; color: var(--ink-2); padding: 0; cursor: pointer; font: inherit; }
.btn.right { float: right; }
.btn[disabled] { opacity: .6; cursor: progress; }
form.inline { display: inline; }
.flash { padding: 10px 14px; border-radius: 8px; margin: 14px 0; border: 1px solid transparent; }
.flash-success { background: var(--ok-bg); color: var(--ok); }
.flash-error { background: var(--error-bg); color: var(--danger); }
.flash-info { background: var(--info-bg); color: var(--ink); }
.flash pre { margin: 6px 0 0; font-size: .85rem; white-space: pre-wrap; }
.muted { color: var(--ink-2); }
.small { font-size: .85rem; }
.big { font-size: 1.15rem; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; }
.break { overflow-wrap: anywhere; }
.nowrap { white-space: nowrap; }
.tag { display: inline-block; padding: 1px 7px; border-radius: 999px; font-size: .75rem; background: var(--tag-bg); color: var(--ink-2); vertical-align: middle; }
.tag-ok { background: var(--ok-bg); color: var(--ok); }
.tag-warn { background: var(--warn-bg); color: var(--warn); }
table { width: 100%; border-collapse: collapse; font-size: .93rem; }
th, td { text-align: left; padding: 8px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink-3); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.compact th, table.compact td { padding: 5px 8px; }
.table-wrap { overflow-x: auto; }
.truncate { max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
tr.expired td { opacity: .55; }
ul.plain { list-style: none; padding: 0; margin: 0 0 10px; }
ul.plain li { padding: 4px 0; border-bottom: 1px dashed var(--line); }
blockquote { margin: 10px 0; padding: 8px 14px; border-left: 3px solid var(--line); color: var(--ink-2); }
.qr { background: #fff; border-radius: 8px; padding: 6px; }
.stats { display: flex; flex-wrap: wrap; gap: 22px; margin: 6px 0 12px; }
.stat { display: flex; flex-direction: column; }
.stat-n { font-size: 1.7rem; font-weight: 600; font-variant-numeric: tabular-nums; line-height: 1.1; color: var(--accent); }
.stat-l { font-size: .8rem; color: var(--ink-2); }
/* single-series daily bar chart: thin baseline-anchored bars, 2px gaps, hover tooltip via title */
.bars { display: flex; align-items: flex-end; gap: 2px; height: 120px; margin: 0; padding: 0; border-bottom: 1px solid var(--line); }
.bar-col { flex: 1 1 0; height: 100%; display: flex; align-items: flex-end; min-width: 4px; }
.bar { width: 100%; background: linear-gradient(180deg, var(--bar), var(--violet)); border-radius: 3px 3px 0 0; min-height: 0; transition: opacity .1s; }
.bar-col:hover .bar { opacity: .7; }
.bar-axis { display: flex; justify-content: space-between; font-size: .78rem; color: var(--ink-3); margin: 4px 0 10px; }
details summary { cursor: pointer; }
/* link search and inline title editing */
.search { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.search h2 { margin: 0; flex: 1 1 100%; }
.search input[type=search] { flex: 1 1 260px; margin: 0; }
.title-edit summary { list-style: none; cursor: pointer; }
.title-edit summary::-webkit-details-marker { display: none; }
.edit-hint { font-size: .75rem; color: var(--ink-3); opacity: 0; }
.title-edit summary:hover .edit-hint, .title-edit[open] .edit-hint { opacity: 1; }
.inline-edit { display: flex; gap: 6px; margin: 4px 0 6px; }
.inline-edit input { margin: 0; padding: 4px 8px; font-size: .9rem; }
.title-form label { margin-bottom: 6px; }
/* host-prefixed input for custom short codes */
.prefixed { display: flex; align-items: stretch; margin-top: 4px; }
.prefixed .prefix { display: flex; align-items: center; padding: 0 10px; border: 1px solid var(--line); border-right: 0; border-radius: 6px 0 0 6px; background: var(--tag-bg); color: var(--ink-2); font-size: .9rem; white-space: nowrap; }
.prefixed input { margin: 0; border-radius: 0 6px 6px 0; }