:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #eef1f5;
  --text: #16202c;
  --muted: #5b6878;
  --border: #dde2e9;
  --accent: #c8102e;
  --accent-ink: #ffffff;
  --navy: #0b2545;
  --ok: #1d7a46;
  --warn: #9a6200;
  --focus: #2f6fde;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e141b;
    --surface: #161e28;
    --surface-2: #1d2734;
    --text: #e6ebf1;
    --muted: #9aa7b6;
    --border: #2a3646;
    --accent: #ef3b56;
    --navy: #0a1a30;
    --ok: #4cc485;
    --warn: #e0a640;
    --focus: #6d9cf0;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--focus); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 0.5em; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.02rem; }
p { margin: 0 0 0.8em; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* Shell */
.topbar {
  background: var(--navy);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 8px; color: #fff; text-decoration: none; font-weight: 700; letter-spacing: 0.2px; }
.brand img { width: 28px; height: 28px; }
.topbar .spacer { flex: 1; }
.topbar .who { background: none; border: 0; color: inherit; cursor: pointer; padding: 0; font: inherit; font-size: 0.85rem; opacity: 0.85; max-width: 40vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar a.signout { color: #fff; font-size: 0.85rem; }
.badge-proto { font-size: 0.7rem; background: var(--accent); color: #fff; padding: 2px 6px; border-radius: 4px; font-weight: 600; }

.layout { display: grid; grid-template-columns: 210px 1fr; min-height: calc(100vh - 52px); }
nav.side { background: var(--surface); border-right: 1px solid var(--border); padding: 12px 8px; }
nav.side a {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; border-radius: 8px;
  color: var(--text); text-decoration: none; font-weight: 500;
}
nav.side a:hover { background: var(--surface-2); }
nav.side a.active { background: var(--accent); color: var(--accent-ink); }
nav.side .group { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); padding: 14px 12px 4px; }
main { padding: 24px; max-width: 1100px; width: 100%; }

@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  nav.side {
    display: flex; overflow-x: auto; gap: 4px; padding: 8px;
    border-right: 0; border-bottom: 1px solid var(--border);
    position: sticky; top: 48px; z-index: 9;
  }
  nav.side .group { display: none; }
  nav.side a { white-space: nowrap; padding: 6px 10px; }
  main { padding: 16px; }
  .topbar .who { display: none; }
}

/* Building blocks */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.stack > * + * { margin-top: 12px; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.pill { white-space: nowrap; display: inline-block; font-size: 0.75rem; padding: 2px 8px; border-radius: 999px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); }
.pill.win { color: var(--ok); border-color: currentColor; background: transparent; }
.pill.loss { color: var(--accent); border-color: currentColor; background: transparent; }
.pill.warn { color: var(--warn); border-color: currentColor; background: transparent; }
.stat { font-size: 1.8rem; font-weight: 700; }
.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.page-head p { margin: 0; color: var(--muted); }
.empty { text-align: center; padding: 32px 16px; color: var(--muted); }
.notice { border-left: 4px solid var(--warn); background: var(--surface); padding: 10px 14px; border-radius: 6px; }
.notice.info { border-left-color: var(--focus); }
hr { border: 0; border-top: 1px solid var(--border); margin: 16px 0; }
.prose { max-width: 70ch; }
.prose li { margin-bottom: 0.3em; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 0.8rem; color: var(--muted); font-weight: 600; }

/* Forms */
label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; }
input, select, textarea {
  width: 100%; font: inherit; color: var(--text);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px;
}
textarea { min-height: 80px; resize: vertical; }
input[type="checkbox"] { width: auto; }
.form-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.form-grid .wide { grid-column: 1 / -1; }
.hint { font-size: 0.78rem; color: var(--muted); margin-top: 3px; font-weight: 400; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-weight: 600; cursor: pointer;
  border-radius: 8px; padding: 8px 14px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  text-decoration: none;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--accent); }
.btn.small { padding: 4px 10px; font-size: 0.85rem; }
.btn[disabled] { opacity: 0.55; cursor: default; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 0.8rem; border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 999px; padding: 4px 10px; cursor: pointer; font: inherit; }
.chip:hover { background: var(--surface-2); }

/* Dialog */
dialog { border: 1px solid var(--border); border-radius: 12px; padding: 0; width: min(680px, calc(100vw - 32px)); background: var(--surface); color: var(--text); }
dialog::backdrop { background: rgba(5, 10, 20, 0.55); }
dialog .dlg-head { padding: 14px 16px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
dialog .dlg-body { padding: 16px; max-height: 70vh; overflow: auto; }
dialog .dlg-foot { padding: 12px 16px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

.toast {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25); z-index: 100; max-width: calc(100vw - 32px);
}
.toast.error { background: #8a1020; }

/* Video */
video { width: 100%; max-height: 60vh; background: #000; border-radius: 8px; }
.timeline { position: relative; height: 26px; background: var(--surface-2); border-radius: 6px; margin: 8px 0; cursor: pointer; }
.timeline .mark { position: absolute; top: 3px; width: 4px; height: 20px; border-radius: 2px; background: var(--accent); transform: translateX(-2px); }
.timeline .mark.good { background: var(--ok); }
.progress { height: 8px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.progress > div { height: 100%; background: var(--accent); width: 0; transition: width 0.2s; }
.tag-row { display: grid; grid-template-columns: 64px 1fr auto; gap: 8px; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--border); }
.tag-row button.time { font-variant-numeric: tabular-nums; }

/* Public pages */
.public { max-width: 720px; margin: 0 auto; padding: 32px 16px; }
.hero { background: var(--navy); color: #fff; padding: 40px 16px; text-align: center; }
.hero h1 { font-size: 2rem; }
.hero p { opacity: 0.9; max-width: 560px; margin: 0 auto 1em; }
.signin { display: grid; gap: 10px; max-width: 320px; margin: 0 auto; }
.brand.plain { color: inherit; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.plain-link { color: inherit; text-decoration: none; display: block; }
.plain-link:hover { border-color: var(--focus); }
main:focus { outline: none; }
nav.side a .pill { margin-left: auto; }
nav.side[hidden] { display: none; }
.layout:has(nav.side[hidden]) { grid-template-columns: 1fr; }
nav.side a.active .pill { color: #fff; border-color: #fff; }
[hidden] { display: none !important; }

.lang-switch { display: inline-flex; border: 1px solid rgba(255,255,255,0.4); border-radius: 6px; overflow: hidden; }
.lang-switch button { background: transparent; color: inherit; border: 0; padding: 3px 8px; font: inherit; font-size: 0.75rem; font-weight: 600; cursor: pointer; opacity: 0.75; }
.lang-switch button.active { background: rgba(255,255,255,0.2); opacity: 1; }
.lang-switch.floating { position: absolute; top: 12px; right: 16px; color: #fff; }
.progress > div.done { background: var(--ok); }