:root {
  --bg: #08120c;
  --panel: #101c14;
  --panel-2: #16281c;
  --line: #213a28;
  --text: #e8f5ec;
  --muted: #8fae9a;
  --accent: #2ecb3c;
  --accent-2: #22a52f;
  --accent-soft: rgba(46, 203, 60, 0.16);
  --danger: #e5484d;
  --ok: #5df24a;
  --radius: 14px;
}

* { box-sizing: border-box; }

/* A folha do navegador define [hidden]{display:none}, mas com prioridade menor
   que as regras de layout abaixo (.lobby e .room usam display:grid). Sem este
   reforco, marcar hidden nao esconde nada e o lobby fica por cima da sala. */
[hidden] { display: none !important; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background:
    radial-gradient(1100px 560px at 15% -10%, #16391f 0%, transparent 60%),
    radial-gradient(900px 500px at 100% 0%, #0f2a17 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

button {
  font: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 16px;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
}

button:active { transform: translateY(1px); }
button:disabled { opacity: 0.55; cursor: not-allowed; }

.primary {
  background: var(--accent);
  color: #06140a;
  font-weight: 650;
  box-shadow: 0 6px 18px rgba(46, 203, 60, 0.22);
}

.primary:hover:not(:disabled) { background: var(--accent-2); }
.danger { background: transparent; color: var(--danger); border-color: #57282c; }
.danger:hover { background: #2a1417; }
.ghost { background: var(--panel-2); color: var(--text); border-color: var(--line); }
.ghost:hover { background: #1e3626; }
.small { padding: 6px 12px; font-size: 13px; }

input[type="text"] {
  width: 100%;
  padding: 11px 13px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0b1a10;
  color: var(--text);
  font: inherit;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---------- Lobby ---------- */

.lobby {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(430px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.5);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.logo h1 {
  margin: 0;
  font-size: 30px;
  letter-spacing: -0.6px;
  font-weight: 700;
}

.logo h1 span { color: var(--accent); }
.logo-mark { filter: drop-shadow(0 4px 12px rgba(46, 203, 60, 0.35)); }

.tagline { margin: 0 0 22px; color: var(--muted); }

.card label {
  display: block;
  margin: 14px 0 6px;
  font-size: 13px;
  color: var(--muted);
}

.row { display: flex; gap: 8px; }
.row input { flex: 1; }
.row button { white-space: nowrap; }

#join-button { width: 100%; margin-top: 20px; }

.hint { color: var(--muted); font-size: 12.5px; margin: 16px 0 0; }
.hint.inline { margin: 0; }
.error { color: var(--danger); font-size: 13.5px; margin: 14px 0 0; }

/* ---------- Sala ---------- */

.room {
  min-height: 100%;
  display: grid;
  grid-template-columns: 1fr 260px;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "topbar topbar"
    "stage  sidebar"
    "controls controls";
}

.topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 9px; font-size: 17px; }
.brand b { color: var(--accent); }

.room-meta { display: flex; align-items: center; gap: 10px; }
.room-meta .label { color: var(--muted); font-size: 13px; }
.room-meta strong { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.status { display: flex; align-items: center; gap: 10px; }

.badge {
  font-size: 12.5px;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--muted);
}

.badge.online { color: var(--ok); border-color: #275e2b; background: var(--accent-soft); }
.badge.offline { color: var(--danger); border-color: #57282c; }

.stage { grid-area: stage; padding: 18px; min-width: 0; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 16px;
}

.empty {
  height: 100%;
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
  color: var(--muted);
  padding: 56px 20px;
}

.empty-mark { opacity: 0.5; margin-bottom: 14px; }
.empty h2 { color: var(--text); font-size: 19px; margin: 0 0 8px; }

.tile {
  margin: 0;
  background: #000;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.tile video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #000;
}

.tile figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  background: var(--panel);
  font-size: 13.5px;
}

.tile-actions { display: flex; align-items: center; gap: 6px; }

.icon {
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 8px;
  padding: 4px 9px;
  font-size: 12px;
}

.icon:hover { color: var(--text); }
.icon.muted { color: var(--danger); border-color: #57282c; }

.volume { width: 74px; accent-color: var(--accent); }

.sidebar {
  grid-area: sidebar;
  border-left: 1px solid var(--line);
  background: var(--panel);
  padding: 18px;
}

.sidebar h3 { margin: 0 0 12px; font-size: 13px; color: var(--muted); font-weight: 600; }

.peer-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }

.peer-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--panel-2);
  font-size: 14px;
}

.peer-list .tag {
  font-size: 11px;
  color: var(--ok);
  background: var(--accent-soft);
  border: 1px solid #275e2b;
  border-radius: 999px;
  padding: 2px 8px;
  white-space: nowrap;
}

.controls {
  grid-area: controls;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--panel);
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}

.toggle { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14px; }
.toggle input { accent-color: var(--accent); width: 16px; height: 16px; }

.toast {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 16px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
  font-size: 14px;
}

@media (max-width: 820px) {
  .room {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "stage"
      "sidebar"
      "controls";
  }

  .sidebar { border-left: none; border-top: 1px solid var(--line); }
  .grid { grid-template-columns: 1fr; }
}