/* The Lexi v3 design system (the consolidated "Lexi Design System v1.0"
   prototype, August 2026). The fonts are self-hosted in /fonts: the CSP
   permits 'self' only. */

@font-face { font-family:"Inter"; src:url(/fonts/inter-latin.woff2) format("woff2"); font-weight:400 700; font-style:normal; font-display:swap; unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family:"Inter"; src:url(/fonts/inter-cyrillic.woff2) format("woff2"); font-weight:400 700; font-style:normal; font-display:swap; unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116; }
@font-face { font-family:"Manrope"; src:url(/fonts/manrope-latin.woff2) format("woff2"); font-weight:500 800; font-style:normal; font-display:swap; unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family:"Manrope"; src:url(/fonts/manrope-cyrillic.woff2) format("woff2"); font-weight:500 800; font-style:normal; font-display:swap; unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116; }
@font-face { font-family:"JetBrains Mono"; src:url(/fonts/jbmono-latin.woff2) format("woff2"); font-weight:400 700; font-style:normal; font-display:swap; unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family:"JetBrains Mono"; src:url(/fonts/jbmono-cyrillic.woff2) format("woff2"); font-weight:400 700; font-style:normal; font-display:swap; unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116; }

:root {
  color-scheme: dark;

  /* Surfaces: background -> card -> nested block -> hover */
  --ground:#050505;
  --surface:#131317;
  --nested:#0a0a0c;
  --hover:#1a1a20;
  --header-bg:rgba(10,10,10,.72);

  /* Borders: one soft on cards, one solid on nested blocks */
  --border:rgba(255,255,255,.06);
  --line:#27272a;
  --line-strong:#3f3f46;

  /* A single grey scale */
  --text:#fafafa;
  --muted:#a1a1aa;
  --faint:#71717a;
  --dim:#52525b;

  /* The indigo accent */
  --accent:#6366f1;
  --accent-strong:#4f46e5;
  --accent-soft:#818cf8;
  --accent-tint:rgba(99,102,241,.10);
  --accent-edge:rgba(99,102,241,.28);

  --ok:#10b981;
  --warn:#f59e0b;
  --err:#f43f5e;

  --radius-card:16px;
  --radius-block:12px;
  --radius-control:9px;

  --font-body:"Inter",ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-head:"Manrope",ui-sans-serif,system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  font-family:var(--font-body);
  background:var(--ground);
  color:var(--text);
}
* { box-sizing:border-box; }
::selection { background:rgba(99,102,241,.3); color:#fff; }
::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-track { background:var(--nested); }
::-webkit-scrollbar-thumb { background:var(--line); border-radius:10px; }
::-webkit-scrollbar-thumb:hover { background:var(--line-strong); }

body { margin:0; min-height:100vh; background:var(--ground); -webkit-font-smoothing:antialiased; }
.sprite { display:none; }
.shell { width:min(1120px,calc(100% - 32px)); margin:auto; padding:0 0 24px; }
/* The session pages are one column: capsule -> dialogue -> controls -> phrases -> API. */
.shell.narrow { width:min(880px,calc(100% - 32px)); }
.section { display:flex; flex-direction:column; gap:14px; margin-top:36px; }
.session-controls { align-items:center; }

h1, h2, h3 { font-family:var(--font-head); font-weight:700; letter-spacing:-.03em; }

/* The service caption of a section: indigo, small caps, an icon on the left */
.eyebrow { display:flex; align-items:center; gap:8px; color:var(--accent-soft); font-size:11px; font-weight:700; letter-spacing:.16em; text-transform:uppercase; }
.eyebrow svg { width:15px; height:15px; flex:none; }

/* The icon tile inside the cards */
.tile {
  width:44px; height:44px; flex:none; display:grid; place-items:center;
  border:1px solid var(--border); border-radius:10px; background:var(--hover); color:var(--muted);
}
.tile svg { width:18px; height:18px; }

/* ── The header ────────────────────────────────────────────────────────── */
header {
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  min-height:64px; margin:0 -16px; padding:8px 16px;
  background:var(--header-bg); backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
}
.brand { display:flex; gap:12px; align-items:center; font-family:var(--font-head); font-size:18px; font-weight:700; letter-spacing:-.02em; color:var(--text); }
.mark { width:32px; height:32px; border-radius:8px; display:grid; place-items:center; color:var(--nested); background:var(--text); }
.mark svg { width:18px; height:18px; }
.header-actions { display:flex; align-items:center; justify-content:flex-end; gap:12px; flex-wrap:wrap; }
.quota-label, .auth-user { color:var(--muted); font-size:13px; }
.auth-user { color:var(--text); font-weight:500; }
.auth-user:not([hidden])::before { content:""; display:inline-block; width:1px; height:16px; margin-right:12px; background:var(--line); vertical-align:-3px; }
.header-button { padding:6px 10px; border-radius:8px; color:var(--faint); background:transparent; font-size:13px; font-weight:500; }
.header-button:hover:not(:disabled) { color:var(--text); }
/* The header sections are identical on every page so the menu does not jump on navigation. */
.header-nav { display:flex; align-items:center; gap:18px; flex:none; }
.nav-tab { color:var(--faint); font-size:13px; font-weight:500; text-decoration:none; white-space:nowrap; transition:color .2s; }
.nav-tab:hover { color:var(--text); }
.nav-tab.active { color:var(--text); }
.nav-tab[hidden] { display:none; }
.connection {
  display:inline-flex; align-items:center; gap:8px;
  padding:4px 12px; border:1px solid var(--border); border-radius:999px;
  background:rgba(255,255,255,.04); color:var(--faint); font-size:12px; font-weight:500;
  transition:color .2s, border-color .2s, background .2s;
}
.connection::before { content:""; width:6px; height:6px; border-radius:50%; background:var(--dim); }
.connection.live { background:rgba(16,185,129,.10); border-color:rgba(16,185,129,.22); color:var(--ok); }
.connection.live::before { background:var(--ok); animation:status-pulse 2s cubic-bezier(.4,0,.6,1) infinite; }

/* ── Hero ──────────────────────────────────────────────────────────────── */
.hero { width:min(880px,100%); margin:0 auto; padding:56px 0 40px; text-align:center; }
/* The carrier of the voice session's state. The round 184x184 portrait was
   removed: it took up the top of the screen while saying exactly what the
   status line beneath it said. The `orb` identifier was kept — all three pages
   set the state on it. */
.orb { display:flex; justify-content:center; height:24px; margin:0 auto 20px; }
@keyframes status-pulse { 50% { opacity:.45; } }

.visualizer {
  display:flex; align-items:center; gap:4px; height:24px;
  opacity:0; transition:opacity .3s;
}
.visualizer i { width:4px; height:8px; border-radius:999px; background:var(--accent); display:block; }
.visualizer i:nth-child(1) { height:14px; opacity:.8; }
.visualizer i:nth-child(2) { height:22px; }
.visualizer i:nth-child(3) { height:10px; opacity:.6; }
.visualizer i:nth-child(4) { height:18px; opacity:.9; }
.visualizer i:nth-child(5) { height:8px; opacity:.5; }
.visualizer i:nth-child(6) { height:22px; }
.visualizer i:nth-child(7) { height:14px; opacity:.8; }
:is(.orb.live, .orb.speaking, .orb[data-state="listening"], .orb[data-state="speaking"], .orb[data-state="playing"]) .visualizer { opacity:1; }
:is(.orb.speaking, .orb[data-state="speaking"], .orb[data-state="playing"]) .visualizer i { transform-origin:center; animation:bar-grow 1.2s ease-in-out infinite; }
.visualizer i:nth-child(2n) { animation-delay:.1s; }
.visualizer i:nth-child(3n) { animation-delay:.2s; }
.visualizer i:nth-child(4n) { animation-delay:.3s; }
@keyframes bar-grow { 0%,100% { transform:scaleY(.3); } 50% { transform:scaleY(1); } }

.status {
  display:inline-block; min-height:20px; margin:0 0 16px;
  padding:5px 14px; border:1px solid var(--accent-edge); border-radius:999px; background:var(--accent-tint);
  color:var(--accent-soft); font-size:10px; font-weight:700; letter-spacing:.16em; text-transform:uppercase;
}
h1 { max-width:760px; margin:0 auto 14px; font-size:clamp(30px,4.5vw,46px); line-height:1.06; letter-spacing:-.04em; color:var(--text); }
.subtitle { max-width:520px; margin:0 auto; color:var(--muted); font-size:15px; line-height:1.6; text-wrap:pretty; }
.subtitle a { color:var(--accent-soft); }

.mode-switch { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin:32px 0 0; }
.mode-card {
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:12px;
  padding:26px; border:1px solid var(--border); border-radius:14px; background:var(--surface);
  color:var(--faint); text-decoration:none;
  transition:background .2s, border-color .2s, color .2s;
}
.mode-card:hover { background:var(--hover); color:var(--muted); }
.mode-card .mode-icon { width:22px; height:22px; }
.mode-card span { font-size:11px; font-weight:700; letter-spacing:.18em; text-transform:uppercase; }
.mode-card.active { background:var(--accent-tint); border-color:var(--accent-edge); color:var(--accent-soft); }

.audio-input { display:flex; align-items:center; justify-content:center; gap:8px; margin:0; color:var(--dim); font-family:var(--font-mono); font-size:10px; letter-spacing:.14em; text-transform:uppercase; }
.audio-input strong { max-width:min(440px,72vw); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; color:var(--accent-soft); font-weight:500; }

/* ── The hero cards: the capsule and accuracy ──────────────────────────── */
.capsule-panel {
  display:flex; align-items:center; gap:16px; margin:24px 0 0; padding:16px; text-align:left;
  border:1px solid var(--border); border-radius:14px; background:var(--surface);
}
.capsule-title { flex:1; display:flex; flex-direction:column; gap:4px; font-family:var(--font-head); font-size:14px; font-weight:600; color:var(--text); }
.capsule-title small { font-family:var(--font-body); font-size:12px; font-weight:400; color:var(--faint); }
.pill {
  flex:none; padding:3px 11px; border:1px solid var(--accent-edge); border-radius:999px;
  background:var(--accent-tint); color:var(--accent-soft); font-size:10px; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
}
.file-button { display:inline-flex; align-items:center; flex:none; border-radius:var(--radius-control); padding:9px 14px; border:1px solid var(--line-strong); color:#d4d4d8; background:transparent; font-size:13px; font-weight:500; cursor:pointer; transition:background .2s, border-color .2s, opacity .2s; }
.file-button:hover { background:rgba(255,255,255,.05); border-color:#52525b; }
.file-button input { display:none; }
.capsule-panel.locked { opacity:.55; }
.capsule-panel.locked .file-button { cursor:not-allowed; }

/* The accuracy toggle is part of the session control tray rather than a card
   of its own: one checkbox is not worth a whole block of the page. */
.accuracy-toggle { display:inline-flex; align-items:center; gap:10px; padding:9px 14px; border-radius:var(--radius-control); color:var(--faint); font-size:13px; font-weight:500; cursor:pointer; transition:background .2s, color .2s; }
.accuracy-toggle:hover { background:rgba(255,255,255,.05); color:#d4d4d8; }
.accuracy-toggle input { position:absolute; opacity:0; width:0; height:0; }
.switch {
  flex:none; width:34px; height:20px; padding:2px; border-radius:999px; background:var(--line);
  display:flex; justify-content:flex-start; transition:background .2s;
}
.switch::before { content:""; width:16px; height:16px; border-radius:999px; background:#fff; transition:transform .2s; }
/* The sibling combinator rather than :has(): the checkbox's state is also
   changed by JS (`disabled` during a session), and :has() invalidation does not
   always fire on that. */
.accuracy-toggle input:checked ~ span { color:var(--accent-soft); }
.accuracy-toggle input:checked + .switch { background:var(--accent-strong); }
.accuracy-toggle input:checked + .switch::before { transform:translateX(14px); }
.accuracy-toggle input:focus-visible + .switch { outline:2px solid rgba(99,102,241,.6); outline-offset:2px; }
.accuracy-toggle input:disabled ~ span { opacity:.45; }
.accuracy-toggle:hover:not(:active) input:disabled ~ span { color:var(--faint); }

/* ── Buttons ───────────────────────────────────────────────────────────── */
button { border:0; border-radius:var(--radius-control); padding:11px 18px; font:inherit; font-size:13px; font-weight:600; cursor:pointer; transition:background .2s, color .2s, border-color .2s, opacity .2s; }
button:disabled { opacity:.4; cursor:not-allowed; }
button:focus-visible, a:focus-visible, input:focus-visible, summary:focus-visible { outline:2px solid rgba(99,102,241,.6); outline-offset:2px; }
.primary { display:inline-flex; align-items:center; gap:8px; color:#fff; background:var(--accent-strong); box-shadow:0 0 30px rgba(79,70,229,.35); }
.primary:hover:not(:disabled) { background:var(--accent); }
.primary:disabled { box-shadow:none; }
.btn-icon { width:16px; height:16px; flex:none; }
.secondary { color:#d4d4d8; background:transparent; border:1px solid var(--line-strong); font-weight:500; }
.secondary:hover:not(:disabled) { background:rgba(255,255,255,.05); border-color:#52525b; }
.danger { color:var(--err); background:transparent; border:1px solid rgba(244,63,94,.28); font-weight:500; }
.danger:hover:not(:disabled) { background:rgba(244,63,94,.10); }
.compact-button { padding:6px 12px; border-radius:8px; color:#d4d4d8; background:transparent; border:1px solid var(--line); font-size:12px; font-weight:500; }
.compact-button:hover:not(:disabled) { background:var(--hover); border-color:#52525b; }
.controls { display:inline-flex; justify-content:center; flex-wrap:wrap; gap:8px; margin-top:28px; padding:8px; border:1px solid var(--border); border-radius:14px; background:var(--surface); }

/* ── The dialogue journal ──────────────────────────────────────────────── */
.events-heading { display:flex; align-items:center; justify-content:space-between; gap:14px; min-height:32px; flex-wrap:wrap; }
.event-actions { display:flex; align-items:center; justify-content:flex-end; gap:12px; flex-wrap:wrap; }
.latency-summary { color:var(--faint); font-family:var(--font-mono); font-size:10.5px; font-variant-numeric:tabular-nums; }
.technical-toggle { display:flex; align-items:center; gap:7px; color:var(--faint); font-size:11px; cursor:pointer; }
.technical-toggle input { accent-color:var(--accent-strong); }

.events {
  display:flex; flex-direction:column; gap:20px;
  min-height:220px; max-height:560px; overflow:auto;
  padding:24px; border:1px solid var(--border); border-radius:var(--radius-card); background:var(--surface);
  color:var(--muted); font-size:14px; line-height:1.6;
}
.events:empty::before { content:"Начните диалог, чтобы начать обучение"; margin:auto; color:var(--faint); font-size:14px; }

.event { display:flex; flex-direction:column; gap:6px; align-items:flex-start; animation:enter .35s ease both; }
.event.user, .event.dialog.user { align-items:flex-end; }
@keyframes enter { from { opacity:0; transform:translateY(6px); } }
.event .speaker, .event > strong {
  display:block; font-size:10px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--faint);
}
.event.assistant .speaker, .event.assistant > strong { color:var(--accent-soft); }
.event .bubble {
  position:relative; max-width:80%; padding:12px 16px;
  border-radius:4px 16px 16px 16px; background:var(--accent-tint); border:1px solid rgba(99,102,241,.22);
  color:var(--text); text-wrap:pretty; overflow-wrap:anywhere;
}
.event.user .bubble { border-radius:16px 4px 16px 16px; background:#1e1e26; border-color:var(--border); }
.teacher-content { white-space:pre-wrap; }
.replay-button {
  display:flex; align-items:center; justify-content:center; width:26px; height:26px; margin:10px 0 0 auto; padding:0;
  border-radius:999px; border:1px solid rgba(99,102,241,.22); background:rgba(99,102,241,.12); color:var(--accent-soft); font-size:10px;
}
.replay-button:hover:not(:disabled) { background:rgba(99,102,241,.20); }
.replay-button:disabled { display:none; }
.teacher-hidden {
  display:inline-block; margin:1px 3px; padding:2px 9px; border:1px solid var(--line-strong); border-radius:999px;
  color:var(--faint); background:var(--nested); font-size:10px; white-space:nowrap;
}
.teacher-hidden.hidden_until_requested { border-color:var(--accent-edge); color:var(--accent-soft); }
.teacher-hidden.audio_only { color:var(--dim); }

.event.technical {
  display:none; align-items:flex-start; max-width:100%; padding:2px 0 2px 14px;
  border-left:2px solid var(--line); color:var(--faint); font-family:var(--font-mono); font-size:11px; line-height:1.55;
}
.events.show-technical .event.technical { display:block; }
.event.technical[hidden] { display:none; }

/* ── API usage: the spoiler at the bottom of the session page ──────────── */
.usage-panel { margin-top:36px; border:1px solid var(--border); border-radius:var(--radius-card); background:var(--surface); overflow:hidden; }
.usage-panel summary { display:flex; align-items:center; gap:10px; padding:18px; cursor:pointer; list-style:none; }
.usage-panel summary::-webkit-details-marker { display:none; }
.usage-panel summary::after { content:"▸"; margin-left:auto; color:var(--dim); transition:transform .2s; }
.usage-panel[open] summary::after { transform:rotate(90deg); }
.usage-panel .api-usage-list { padding:0 18px 18px; }
.usage-panel .api-usage-card { background:var(--nested); }
.api-usage-list { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:12px; }
.api-usage-card { min-width:0; padding:18px; border:1px solid var(--border); border-radius:var(--radius-block); background:var(--surface); }
.api-usage-heading { display:flex; align-items:center; justify-content:space-between; gap:8px; margin-bottom:12px; color:var(--faint); font-size:10px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; }
.model-label { max-width:130px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; padding:2px 8px; border:1px solid var(--line); border-radius:999px; background:var(--nested); color:var(--muted); font-size:9px; font-weight:600; letter-spacing:.04em; }
.api-usage-card strong, .api-cost, .usage-detail { display:block; font-family:var(--font-mono); }
.api-usage-card strong { font-family:var(--font-head); font-size:20px; font-weight:700; color:var(--text); }
.api-cost { margin-top:4px; color:var(--accent-soft); font-size:11px; font-weight:600; }
.usage-detail { margin-top:14px; padding-top:12px; border-top:1px solid var(--border); color:var(--faint); font-size:10px; line-height:1.7; }

/* ── The access management page (/admin.html) ──────────────────────────── */
.admin-page { padding:40px 0 24px; }
.admin-page[hidden], .admin-denied[hidden] { display:none; }
.page-head { display:flex; flex-direction:column; gap:10px; margin-bottom:32px; }
.page-head h1 { margin:0; font-size:clamp(28px,4vw,38px); }
.page-head p { max-width:640px; margin:0; color:var(--faint); font-size:14px; line-height:1.6; text-wrap:pretty; }

.stat-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:32px; }
.stat-card { display:flex; align-items:center; gap:14px; padding:18px; border:1px solid var(--border); border-radius:14px; background:var(--surface); }
.stat-card .tile { width:40px; height:40px; color:var(--accent-soft); }
.stat-card p { margin:0 0 4px; color:var(--faint); font-size:10px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; }
.stat-card strong { font-family:var(--font-head); font-size:22px; font-weight:700; color:var(--text); }

.admin-layout { display:grid; grid-template-columns:2fr 1fr; gap:24px; align-items:start; }
.panel { display:flex; flex-direction:column; gap:16px; padding:22px; border:1px solid var(--border); border-radius:var(--radius-card); background:var(--surface); }
.panel-head { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; }
.panel-head h2 { margin:0; font-size:18px; font-weight:600; }
.panel-head p { margin:4px 0 0; max-width:420px; color:var(--faint); font-size:12px; line-height:1.5; }
.panel-icon { width:16px; height:16px; flex:none; color:var(--faint); }
.admin-notice { min-height:18px; margin:18px 0 0; color:var(--err); font-size:12px; }
.admin-denied { padding:80px 0; text-align:center; }
.admin-denied h1 { margin:0 0 12px; font-size:28px; }
.admin-denied p { margin:0; color:var(--faint); font-size:14px; }
.admin-denied code { font-family:var(--font-mono); font-size:13px; color:var(--accent-soft); }

.invite-create { display:flex; flex-wrap:wrap; gap:10px; }
.invite-create input { flex:1 1 180px; }
.invite-create button { flex:1 1 auto; justify-content:center; }
.invite-create input, .auth-form input {
  min-width:0; border:1px solid var(--line); border-radius:var(--radius-control); padding:10px 14px;
  color:var(--text); background:var(--nested); font:inherit; font-size:14px;
}
.invite-create input::placeholder, .auth-form input::placeholder { color:var(--dim); }
.invite-create input:focus, .auth-form input:focus { outline:none; border-color:rgba(99,102,241,.5); }
.new-invite { display:grid; grid-template-columns:minmax(0,1fr) auto; align-items:center; gap:10px; padding:16px; border:1px solid var(--accent-edge); border-radius:var(--radius-block); background:var(--accent-tint); }
.new-invite[hidden] { display:none; }
.new-invite code { overflow:auto; padding:8px 12px; border-left:2px solid var(--accent-strong); background:var(--nested); color:var(--text); font-family:var(--font-mono); font-size:13px; }
.new-invite small { grid-column:1/-1; color:var(--faint); font-size:11px; }
.admin-list { display:flex; flex-direction:column; gap:10px; color:var(--faint); font-size:13px; }
.admin-item { display:flex; align-items:center; justify-content:space-between; gap:10px; padding:14px 16px; border:1px solid var(--border); border-radius:var(--radius-block); background:var(--nested); transition:background .2s; }
.admin-item:hover { background:var(--hover); }
.admin-item-main { min-width:0; }
.admin-item strong, .admin-item small { display:block; }
.admin-item strong { overflow:hidden; text-overflow:ellipsis; color:var(--text); font-size:14px; font-weight:500; }
.admin-item small { margin-top:3px; color:var(--faint); font-size:10px; letter-spacing:.04em; text-transform:uppercase; }
.admin-item button { flex:none; padding:6px 12px; border-radius:8px; color:var(--muted); background:transparent; border:1px solid var(--line); font-size:12px; font-weight:500; }
.admin-item button:hover:not(:disabled) { background:rgba(255,255,255,.05); border-color:#52525b; }

/* ── The footer ────────────────────────────────────────────────────────── */
.page-footer {
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  margin:56px -16px 0; padding:22px 16px;
  border-top:1px solid var(--border); background:var(--nested);
  color:var(--dim); font-size:10px; font-weight:600; letter-spacing:.2em; text-transform:uppercase;
}

/* ── The auth gate ─────────────────────────────────────────────────────── */
/* A separate page, /login.html, rather than an overlay above the skeleton: the
   working pages know nothing about signing in and are sent here by a redirect. */
.auth-page { min-height:100vh; display:grid; place-items:center; padding:20px; }
.auth-card {
  width:min(400px,100%); padding:28px;
  border:1px solid var(--border); border-radius:var(--radius-card); background:var(--surface);
  box-shadow:0 25px 50px 0 rgba(0,0,0,.45);
}
.auth-card .brand { justify-content:center; margin-bottom:4px; }
.auth-card h1 { margin:20px 0 6px; text-align:center; font-size:20px; font-weight:600; color:var(--text); }
.auth-card > p { margin:0 0 8px; text-align:center; color:var(--faint); font-size:13px; }
.auth-form { display:flex; flex-direction:column; gap:16px; margin-top:20px; }
.auth-form label { display:flex; flex-direction:column; gap:7px; color:var(--muted); font-size:10px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; }
.auth-form button { margin-top:4px; justify-content:center; }
.registration-panel { margin-top:22px; border-top:1px solid var(--border); padding-top:16px; }
.registration-panel summary { cursor:pointer; color:var(--faint); font-size:12px; font-weight:500; }
.registration-panel summary:hover { color:var(--muted); }
.auth-error { min-height:18px; margin:14px 0 0; color:var(--err); font-size:12px; text-align:center; }
.auth-card.config-error .auth-form, .auth-card.config-error .registration-panel { display:none; }

/* ── Responsive layout ─────────────────────────────────────────────────── */
@media (max-width:900px) {
  .admin-layout { grid-template-columns:1fr; }
  .stat-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:760px) {
  .hero { padding-top:40px; }
  .invite-create { flex-direction:column; }
  .quota-label { display:none; }
  .event .bubble { max-width:92%; }
}
@media (max-width:560px) {
  /* The icon tile gives way to the text: otherwise the card's heading is
     squeezed into a narrow column between the icon and the badge. */
  .capsule-panel { flex-wrap:wrap; gap:12px; }
  .capsule-panel .tile { display:none; }
  .capsule-title { flex:1 1 100%; }
  .stat-grid { grid-template-columns:1fr; }
}
@media (max-width:440px) {
  .mode-switch { grid-template-columns:1fr; }
  .mode-card { flex-direction:row; justify-content:flex-start; gap:14px; padding:16px 18px; }
  .events-heading { align-items:flex-start; flex-direction:column; }
  .event-actions { justify-content:flex-start; }
  .controls { display:flex; }
  .controls button { flex:1 1 100%; justify-content:center; }
  .page-footer { flex-direction:column; align-items:flex-start; gap:8px; }
}
@media (prefers-reduced-motion:reduce) {
  .connection.live::before, .visualizer i, .event { animation:none !important; transition:none; }
}