:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #5d6370;
  --border: #e2e5ec;
  --accent: #5b3df5;
  --accent-ink: #ffffff;
  --ok: #107a45;
  --ok-bg: #e5f6ec;
  --err: #b42318;
  --err-bg: #fdecea;
  --warn: #8a5a00;
  --warn-bg: #fff4dc;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --surface: #171a21; --text: #eef0f4; --muted: #a0a6b3;
    --border: #2a2f3a; --accent: #8b74ff; --ok: #5fd39a; --ok-bg: #11291d;
    --err: #ff8a80; --err-bg: #2d1515; --warn: #f5c35b; --warn-bg: #2b2210;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.7rem; margin: 0 0 .4rem; }
h2 { font-size: 1.15rem; margin: 1.6rem 0 .6rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

.topbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .8rem 16px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.brand { font-weight: 700; color: var(--text); font-size: 1.05rem; }
.brand-mark { color: var(--accent); }
.topbar nav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.topbar nav a { color: var(--text); }
.inline { display: inline; margin: 0; }

.container { max-width: 960px; margin: 0 auto; padding: 24px 16px 64px; }
.narrow { max-width: 440px; margin: 0 auto; padding: 40px 16px 64px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 10px; padding: .65rem 1.1rem; font: inherit; font-weight: 600; cursor: pointer; }
.btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: transparent; color: var(--err); border: 1px solid var(--border); }
.btn-small { padding: .4rem .8rem; font-size: .9rem; color: var(--accent-ink) !important; }
button.link { background: none; border: 0; padding: 0; font: inherit; color: var(--text); cursor: pointer; }
.actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.2rem; }

label { display: block; font-weight: 600; margin: 1rem 0 .3rem; }
input[type=text], input[type=email], input[type=password], select {
  width: 100%; padding: .65rem .75rem; border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg); color: var(--text); font: inherit;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.check { display: flex; gap: .5rem; align-items: center; font-weight: 500; }
.help { color: var(--muted); font-size: .85rem; margin-top: .25rem; }
.errorlist { color: var(--err); margin: .3rem 0 0; padding-left: 1.1rem; font-size: .9rem; }

.alert { padding: .75rem 1rem; border-radius: 10px; margin-bottom: 1rem; border: 1px solid var(--border); }
.alert-success { background: var(--ok-bg); color: var(--ok); }
.alert-error { background: var(--err-bg); color: var(--err); }
.alert-warning, .alert-info { background: var(--warn-bg); color: var(--warn); }

.badge { display: inline-block; font-size: .78rem; font-weight: 600; padding: .15rem .55rem; border-radius: 999px; background: var(--bg); color: var(--muted); border: 1px solid var(--border); }
.badge-ok { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.badge-err { background: var(--err-bg); color: var(--err); border-color: transparent; }

.provider { display: flex; justify-content: space-between; align-items: center; gap: .75rem; color: var(--text); }
.provider:hover { text-decoration: none; border-color: var(--accent); }

table.routing { width: 100%; border-collapse: collapse; }
table.routing td, table.routing th { padding: .6rem .4rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
@media (max-width: 640px) {
  table.routing thead { display: none; }
  table.routing tr { display: block; padding: .6rem 0; border-bottom: 1px solid var(--border); }
  table.routing td { display: block; border: 0; padding: .25rem 0; }
}

.hero { text-align: center; padding: 64px 16px 40px; max-width: 760px; margin: 0 auto; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; }
.hero p { font-size: 1.15rem; color: var(--muted); }

textarea { width: 100%; padding: .65rem .75rem; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--text); font: inherit; resize: vertical; }
input[type=number], input[type=url] { width: 100%; padding: .65rem .75rem; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); color: var(--text); font: inherit; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.center { text-align: center; }
.scene { margin-top: 12px; }
.scene label { margin-top: .7rem; }
.scene-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 12px; }
@media (max-width: 640px) { .scene-grid { grid-template-columns: 1fr; } }
.scene-tools { display: flex; gap: 4px; }
.icon-btn { width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); cursor: pointer; font-size: 1rem; }
.icon-btn:disabled { opacity: .35; cursor: default; }
.icon-btn.danger { color: var(--err); }
.warn-text { color: var(--warn); font-weight: 600; }
.sticky-actions { position: sticky; bottom: 0; background: var(--bg); padding: 12px 0; margin: 12px 0; border-top: 1px solid var(--border); }
.spinner { width: 36px; height: 36px; margin: 8px auto 16px; border: 4px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.seo-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 16px; align-items: start; }
.seo-main > .card + .card, .seo-side > .card + .card { margin-top: 12px; }
.seo-side { position: sticky; top: 72px; }
@media (max-width: 860px) { .seo-layout { grid-template-columns: 1fr; } .seo-side { position: static; } }
.title-list { margin-top: .8rem; display: grid; gap: 6px; }
.title-option { display: flex; gap: .7rem; align-items: flex-start; margin: 0; font-weight: 400; padding: .6rem .7rem; border: 1px solid var(--border); border-radius: 10px; cursor: pointer; }
.title-option:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.title-option input { margin-top: .3rem; }
.title-body { display: flex; flex-direction: column; gap: 2px; }
.title-text { font-weight: 600; }
.score { font-size: 3rem; font-weight: 800; line-height: 1; }
.score span { font-size: 1rem; color: var(--muted); font-weight: 600; }
.score-good { color: var(--ok); } .score-mid { color: var(--warn); } .score-low { color: var(--err); }
.checks, .plain { list-style: none; padding: 0; margin: .8rem 0 0; display: grid; gap: 6px; font-size: .9rem; }
.checks .ok { color: var(--muted); } .checks .fix { font-weight: 600; }
.yt-preview { display: grid; gap: 6px; }
.yt-thumb { aspect-ratio: 16 / 9; border-radius: 10px; background: var(--bg); border: 1px dashed var(--border); display: grid; place-items: center; color: var(--muted); font-size: .85rem; }
.yt-title { font-weight: 600; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
@media (max-width: 520px) { .topbar { padding: .6rem 12px; } .topbar nav { gap: .7rem; font-size: .9rem; } .brand { font-size: .95rem; } }