/* SameSecond web app. Phone-first: the room stacks player over chat, and
   puts chat beside the player from 900px up. */
:root {
  --bg: #f1f3f7;
  --surface: #ffffff;
  --sunken: #e6eaf1;
  --fg: #131a2a;
  --muted: #586379;
  --line: #cfd6e2;
  --accent: #1460e0;
  --accent-fg: #ffffff;
  --brand-ink: #121a22;
  --brand-blue: #1a72fa;
  --warn: #b4530a;
  --bad: #b42318;
  --stage: #0b0f17;
  --display: "Bricolage Grotesque", "Trebuchet MS", system-ui, sans-serif;
  --body: "Figtree", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --radius: 10px;
  color-scheme: light;
}
/* Dark theme: follows the device unless the viewer picks one with the theme button. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f131c; --surface: #171d2a; --sunken: #1f2737; --fg: #e9edf5; --muted: #9ba7bd;
    --line: #313c52; --accent: #7ab2fa; --accent-fg: #0a1a33; --brand-ink: #e9edf5; --brand-blue: #7ab2fa; --warn: #f0a25a; --bad: #ff8a7a;
    --stage: #05070b;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f131c; --surface: #171d2a; --sunken: #1f2737; --fg: #e9edf5; --muted: #9ba7bd;
  --line: #313c52; --accent: #7ab2fa; --accent-fg: #0a1a33; --brand-ink: #e9edf5; --brand-blue: #7ab2fa; --warn: #f0a25a; --bad: #ff8a7a;
  --stage: #05070b;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg); font-family: var(--body); font-size: 16px; line-height: 1.5;
  display: flex; flex-direction: column;
  padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px);
}
[hidden] { display: none !important; }
h1, h2 { font-family: var(--display); margin: 0; line-height: 1.12; text-wrap: balance; }
p { margin: 0; }
a { color: var(--accent); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.btn {
  font: inherit; font-weight: 600; font-size: 0.95rem; color: var(--fg); background: var(--surface);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 16px; cursor: pointer;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: 6px; white-space: nowrap;
}
.btn:hover { border-color: var(--accent); }
.btn:focus-visible, input:focus-visible, select:focus-visible, .tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.small { padding: 7px 12px; font-size: 0.88rem; }
.btn.danger { color: var(--bad); }
input, select {
  font: inherit; color: var(--fg); background: var(--surface); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 12px; width: 100%; min-width: 0;
}

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--surface);
}
.brand { display: inline-flex; align-items: center; gap: 8px; font-family: var(--display); font-weight: 700; font-size: 1.2rem; color: var(--fg); text-decoration: none; }
.brand-mark { width: 26px; height: 26px; display: block; }
.brand-name { color: var(--brand-ink); }
.brand-name span { color: var(--brand-blue); }
.topbar-room { display: flex; align-items: center; gap: 12px; min-width: 0; flex: 1; justify-content: flex-end; }
.room-title { color: var(--muted); font-size: 0.92rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }

/* Home */
.home { width: 100%; max-width: 720px; margin: 0 auto; padding-inline: 16px; padding-block: 32px 48px; display: flex; flex-direction: column; gap: 20px; }
.hero { display: flex; flex-direction: column; gap: 12px; padding-block: 8px; }
.hero h1 { font-size: clamp(2rem, 7vw, 3rem); letter-spacing: -0.02em; }
.lede { color: var(--muted); font-size: 1.1rem; max-width: 56ch; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.card h2 { font-size: 1.25rem; margin-bottom: 4px; }
.card label { font-weight: 600; font-size: 0.9rem; }
.card .btn { align-self: flex-start; margin-top: 4px; }
.hint { color: var(--muted); font-size: 0.88rem; }
.hint.bad { color: var(--bad); }
.row { display: flex; gap: 8px; }
.row .btn { margin-top: 0; }
.ext p { color: var(--muted); max-width: 62ch; }
.ext-status { font-family: var(--mono); font-size: 0.8rem; }
.ext-status.ok { color: var(--accent); }
.foot { color: var(--muted); font-size: 0.9rem; padding-top: 8px; }

/* Room */
.room { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.stage-col { display: flex; flex-direction: column; gap: 10px; padding: 12px 16px; min-width: 0; }
.stage { position: relative; width: 100%; aspect-ratio: 16 / 9; max-width: 100%; background: var(--stage); border-radius: var(--radius); overflow: hidden; }
.stage > iframe, .stage > video, .stage > div.yt { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: #000; }
.stage-card {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; padding: 20px; text-align: center; color: #e9edf5; overflow-y: auto;
}
.stage-card h2 { font-size: 1.3rem; }
.stage-card p { color: #b3bdcf; max-width: 46ch; font-size: 0.95rem; }
.stage-card .site { font-family: var(--mono); font-size: 0.85rem; color: #7ab2fa; }
.stage-card input { max-width: 280px; background: #1a2130; color: #e9edf5; border-color: #33405a; }
.stage-card .actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.stage-card .btn { background: #1f2737; color: #e9edf5; border-color: #33405a; }
.stage-card .btn.primary { background: #7ab2fa; color: #0a1a33; border-color: #7ab2fa; }

.sync-line { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--muted); }
.sync-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); flex: none; }
.sync-dot.ok { background: var(--accent); }
.sync-dot.wait { background: var(--warn); }
.sync-dot.bad { background: var(--bad); }
.unlock { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; background: var(--sunken); border-radius: 8px; padding: 10px 12px; font-size: 0.92rem; }
.change { display: flex; gap: 8px; }

.side { flex: 1; display: flex; flex-direction: column; border-top: 1px solid var(--line); background: var(--surface); min-height: 0; min-width: 0; }
.voice-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.voice-info { display: flex; flex-direction: column; min-width: 0; }
.voice-info span { color: var(--muted); font-size: 0.85rem; }
.voice-actions { display: flex; gap: 8px; }
.tabs { display: flex; border-bottom: 1px solid var(--line); }
.tab { flex: 1; font: inherit; font-weight: 600; font-size: 0.92rem; color: var(--muted); background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px; cursor: pointer; }
.tab[aria-selected="true"] { color: var(--fg); border-bottom-color: var(--accent); }
.count { font-family: var(--mono); font-size: 0.75rem; background: var(--sunken); border-radius: 10px; padding: 1px 7px; margin-left: 4px; }
.panel { display: flex; flex-direction: column; min-height: 0; flex: 1; }
.chat-log { flex: 1; overflow-y: auto; padding: 12px 16px; display: flex; flex-direction: column; gap: 10px; min-height: 220px; max-height: 50vh; }
.msg { display: flex; flex-direction: column; gap: 1px; overflow-wrap: anywhere; }
.msg .who { font-weight: 600; font-size: 0.85rem; }
.msg .who time { font-weight: 400; color: var(--muted); font-family: var(--mono); font-size: 0.72rem; margin-left: 6px; }
.msg.system { color: var(--muted); font-size: 0.85rem; }
.chat-empty { color: var(--muted); font-size: 0.9rem; }
.chat-form { display: flex; gap: 8px; padding: 10px 16px; border-top: 1px solid var(--line); }
.people { list-style: none; margin: 0; padding: 8px 16px; display: flex; flex-direction: column; }
.people li { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.people li:last-child { border-bottom: 0; }
.person { display: flex; flex-direction: column; min-width: 0; }
.person .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.person .meta { color: var(--muted); font-size: 0.82rem; }
.badges { display: flex; gap: 6px; flex: none; }
.badge { font-family: var(--mono); font-size: 0.7rem; border: 1px solid var(--line); border-radius: 10px; padding: 1px 8px; color: var(--muted); }
.badge.host { color: var(--accent); border-color: var(--accent); }
.badge.voice { color: var(--warn); border-color: var(--warn); }
.control-setting { padding: 12px 16px 16px; display: flex; flex-direction: column; gap: 6px; border-top: 1px solid var(--line); }
.control-setting label { font-weight: 600; font-size: 0.88rem; }

.toast {
  position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%);
  background: var(--fg); color: var(--bg); padding: 10px 16px; border-radius: 8px; font-size: 0.92rem; max-width: calc(100% - 32px); z-index: 10;
}

@media (min-width: 900px) {
  body { height: 100%; }
  .room { display: grid; grid-template-columns: minmax(0, 1fr) 360px; height: 0; }
  .stage-col { padding: 20px; overflow-y: auto; }
  .side { border-top: 0; border-left: 1px solid var(--line); }
  .chat-log { max-height: none; }
}
@media (prefers-reduced-motion: no-preference) {
  .sync-dot.wait { animation: pulse 1.2s ease-in-out infinite; }
  @keyframes pulse { 50% { opacity: 0.35; } }
}

/* Site navigation and guide pages */
.nav { display: flex; gap: 16px; flex-wrap: wrap; font-size: 0.92rem; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--fg); }
.doc-page { max-width: 860px; }
.step-list { margin: 0; padding: 0; list-style: none; counter-reset: step; display: flex; flex-direction: column; gap: 28px; }
.step-list > li { counter-increment: step; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.step-list > li > h3 { margin: 0; font-family: var(--display); font-size: 1.1rem; display: flex; gap: 10px; align-items: baseline; }
.step-list > li > h3::before { content: counter(step); font-family: var(--mono); font-size: 0.8rem; color: var(--accent-fg); background: var(--accent); border-radius: 50%; width: 1.7em; height: 1.7em; display: inline-grid; place-items: center; flex: none; transform: translateY(-1px); }
.step-list p { color: var(--muted); max-width: 65ch; }
.shot { margin: 0; display: flex; flex-direction: column; gap: 6px; }
.shot img { display: block; max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--sunken); }
.shot.narrow img { max-width: 360px; width: 100%; }
.shot figcaption { color: var(--muted); font-size: 0.85rem; }
.shots-row { display: flex; gap: 16px; flex-wrap: wrap; align-items: flex-start; }
.shots-row .shot { flex: 1 1 260px; min-width: 0; }
.downloads { display: flex; gap: 10px; flex-wrap: wrap; }
.note { color: var(--muted); font-size: 0.9rem; }
code { font-family: var(--mono); font-size: 0.85em; background: var(--sunken); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }

.theme-toggle { font: inherit; font-size: 0.85rem; color: var(--muted); background: none; border: 1px solid var(--line); border-radius: 8px; padding: 5px 10px; cursor: pointer; }
.theme-toggle:hover { color: var(--fg); border-color: var(--accent); }
.topbar-end { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
@media (max-width: 520px) {
  .topbar { gap: 8px; }
  .nav { gap: 12px; font-size: 0.85rem; }
  .brand-name { font-size: 1.05rem; }
  .card { padding: 16px; }
  .row { flex-wrap: wrap; }
}
@media (min-width: 1400px) { .doc-page, .home { max-width: 900px; } }