:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1f2630;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #d4a25a;
  --accent-2: #b8862f;
  --danger: #d14a4a;
  --ok: #3fb950;
  --border: #30363d;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); }
code { background: #0a0d12; padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }

/* ---------- Home ---------- */
body.home {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 20px;
}

.card {
  width: 100%;
  max-width: 480px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.card h1 {
  margin: 0 0 4px;
  font-size: 1.6rem;
  color: var(--accent);
}

.subtitle {
  margin: 0 0 24px;
  color: var(--muted);
}

#join-form { display: flex; flex-direction: column; gap: 14px; }

#join-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

#join-form input {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 1rem;
}

#join-form input:focus {
  outline: none;
  border-color: var(--accent);
}

button {
  background: var(--accent);
  color: #0a0d12;
  border: none;
  border-radius: 6px;
  padding: 10px 16px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover { background: var(--accent-2); }

button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 400;
  font-size: 0.85rem;
  padding: 6px 12px;
}

button.ghost:hover { background: var(--panel-2); }

button.danger { background: var(--danger); color: #fff; }
button.danger:hover { background: #b03b3b; }

.hint {
  margin-top: 24px;
  padding: 12px;
  background: var(--panel-2);
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

.hint p { margin: 0; }

/* ---------- Room ---------- */
body.room {
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 1fr auto;
  height: 100vh;       /* fallback navigateurs anciens */
  height: 100dvh;      /* dynamic viewport : exclut la barre systeme mobile */
  overflow: hidden;
}

.topbar {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.brand { font-weight: 600; color: var(--accent); }

.room-info { display: flex; gap: 12px; align-items: center; font-size: 0.9rem; color: var(--muted); }
.room-info strong { color: var(--text); }

.grid {
  grid-row: 2;
  grid-column: 1;
  padding: 14px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  grid-auto-rows: minmax(180px, 1fr);
  overflow: auto;
  align-content: start;
}

.tile {
  position: relative;
  background: #000;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tile video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

.tile .label {
  position: absolute;
  bottom: 8px;
  left: 8px;
  background: rgba(0, 0, 0, 0.6);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
}

.tile .badges {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 4px;
}

.tile .badge {
  background: rgba(0, 0, 0, 0.6);
  padding: 3px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
}

.tile .badge.off { background: rgba(209, 74, 74, 0.85); }

.tile .placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--panel-2);
  font-size: 2rem;
  color: var(--muted);
}

.tile.is-self .label::before { content: "Moi - "; opacity: 0.7; }
.tile.is-self.mirror video { transform: scaleX(-1); }

.tile.speaking { box-shadow: 0 0 0 3px var(--ok), 0 0 18px rgba(63, 185, 80, 0.45); border-color: var(--ok); }
.tile .badge.speaking-dot { background: var(--ok); animation: pulse 1s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.tile .obs-link {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0, 0, 0, 0.6);
  padding: 3px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
}

.tile .obs-link:hover { background: rgba(0, 0, 0, 0.85); }

.tile .mute-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  cursor: pointer;
  z-index: 2;
}
.tile .mute-btn:hover { background: rgba(0, 0, 0, 0.9); }
.tile .mute-btn.muted { background: rgba(209, 74, 74, 0.85); }
.tile .badges { right: 60px; } /* laisse de la place pour le bouton mute */

.tile .fs-btn {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 2;
}
.tile:hover .fs-btn, .tile:focus-within .fs-btn { opacity: 1; }
.tile .fs-btn:hover { background: rgba(0, 0, 0, 0.9); }
.tile.is-fullscreen { background: #000; }
.tile.is-fullscreen video { object-fit: contain; }

.chat {
  grid-row: 2;
  grid-column: 2;
  width: 280px;
  background: var(--panel);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.chat.hidden { display: none; }

.chat header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-close {
  background: transparent;
  color: var(--muted);
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  padding: 0 6px;
  cursor: pointer;
  display: none; /* visible uniquement sur mobile */
}
.chat-close:hover { color: var(--text); background: transparent; }

.chat-log {
  flex: 1;
  padding: 10px 14px;
  overflow-y: auto;
  font-size: 0.85rem;
}

.chat-msg { margin-bottom: 8px; }
.chat-msg .from { color: var(--accent); font-weight: 600; }
.chat-msg .system { color: var(--muted); font-style: italic; }

.chat-form {
  display: flex;
  gap: 6px;
  padding: 10px;
  border-top: 1px solid var(--border);
}

.chat-form input {
  flex: 1;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 8px;
  color: var(--text);
  font-size: 0.85rem;
}

.chat-form input:focus { outline: none; border-color: var(--accent); }

.chat-form button {
  padding: 6px 10px;
  font-size: 0.85rem;
}

.controls {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  padding: 10px 18px;
  background: var(--panel);
  border-top: 1px solid var(--border);
  align-items: center;
}

.ctrl {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
}

.ctrl:hover { background: #2a3140; }
.ctrl.off { background: var(--danger); border-color: var(--danger); color: #fff; }
.ctrl.danger { background: var(--danger); border-color: var(--danger); color: #fff; }

.status {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.85rem;
}

.status.ok { color: var(--ok); }
.status.err { color: var(--danger); }

/* ---------- Mobile (portrait & paysage) - version simplifiee ---------- */
@media (max-width: 900px) {
  body.room { grid-template-columns: 1fr; }

  .topbar { padding: 6px 10px; flex-wrap: wrap; gap: 4px; font-size: 0.85rem; }
  .topbar .room-info { font-size: 0.78rem; flex-wrap: wrap; gap: 6px; }
  .topbar button.ghost { padding: 4px 8px; font-size: 0.72rem; }

  /* Grille : 2 colonnes par defaut, hauteurs auto pour ne PAS forcer 0 */
  .grid {
    padding: 4px;
    gap: 4px;
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: minmax(120px, 1fr);
  }

  /* Boutons des tuiles toujours visibles (pas de :hover sur tactile) */
  .tile .obs-link, .tile .mute-btn, .tile .fs-btn {
    opacity: 1;
    font-size: 0.65rem;
    padding: 3px 6px;
  }

  /* Chat : overlay fullscreen quand visible, controls et topbar passent au-dessus */
  .chat {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    width: auto;
    height: auto;
    z-index: 40;
    border-left: none;
  }
  .topbar { position: relative; z-index: 60; }
  .controls { position: relative; z-index: 60; }
  .chat-close { display: block; }
  .chat-log { padding-bottom: 70px; }
  .chat-form { padding-bottom: 70px; }

  /* Controls compactes mais toutes les boutons visibles
     padding-bottom: ajout de la safe-area iOS (zone du home bar) pour que
     les boutons ne soient pas masques par les barres systeme. */
  .controls {
    flex-wrap: wrap;
    gap: 4px;
    padding: 6px;
    padding-bottom: calc(6px + env(safe-area-inset-bottom, 0px));
    justify-content: center;
  }
  .controls .ctrl {
    flex: 1 1 auto;
    min-width: 65px;
    padding: 6px 8px;
    font-size: 0.78rem;
  }
  .controls .status { display: none; }
}

/* ---------- Mobile paysage : 3 colonnes ---------- */
@media (max-width: 900px) and (orientation: landscape) {
  .grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Plein ecran d'une tuile (Fullscreen API) ---------- */
.tile:fullscreen, .tile:-webkit-full-screen {
  width: 100vw;
  height: 100vh;
  background: #000;
}
.tile:fullscreen video { object-fit: contain; }

/* ---------- Composite fullscreen avec PiP (emetteur double cam) ---------- */
.pip-fullscreen {
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 1000;
}
.pip-fullscreen .pip-main {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}
.pip-fullscreen .pip-overlay {
  position: absolute;
  bottom: 16px;
  right: 16px;
  width: 25%;
  min-width: 160px;
  max-width: 480px;
  aspect-ratio: 16/9;
  object-fit: cover;
  border: 2px solid rgba(255,255,255,0.7);
  border-radius: 6px;
  background: #000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.6);
  z-index: 10;
}
.pip-fullscreen .pip-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  z-index: 20;
  font-size: 0.85rem;
}
.pip-fullscreen .pip-swap {
  position: absolute;
  top: 12px;
  right: 90px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  z-index: 20;
  font-size: 0.85rem;
}
.pip-fullscreen .pip-main.mirror { transform: scaleX(-1); }

/* ---------- Modals ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: grid;
  place-items: center;
  z-index: 100;
  padding: 20px;
}

.modal.hidden { display: none; }

.modal-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.modal-card > header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}

.modal-card > header h2 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--accent);
}

.modal-close {
  background: transparent;
  color: var(--muted);
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  padding: 0 6px;
  cursor: pointer;
}
.modal-close:hover { color: var(--text); background: transparent; }

.modal-body {
  padding: 18px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal-card > footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

button.primary { background: var(--accent); color: #0a0d12; }
button.primary:hover { background: var(--accent-2); }

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--muted);
}

.field select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--text);
  font-size: 0.95rem;
}

.field select:focus { outline: none; border-color: var(--accent); }

.field-check {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
}

.field-check input { width: 16px; height: 16px; }

.bitrate-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text);
}
.bitrate-row label { display: inline-flex; align-items: center; gap: 4px; cursor: pointer; }
.bitrate-row input[type="number"] {
  width: 90px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 8px;
  color: var(--text);
}
.bitrate-row input[type="number"]:disabled { opacity: 0.4; }
.bitrate-row .unit { color: var(--muted); }
.bitrate-presets { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.bitrate-presets button {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--border); padding: 4px 10px; font-size: 0.78rem;
  border-radius: 4px;
}
.bitrate-presets button:hover { background: #2a3140; }

.meter-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

.meter {
  width: 100%;
  height: 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--ok) 0%, var(--ok) 60%, var(--accent) 80%, var(--danger) 100%);
  transition: width 80ms linear;
}

.hint-inline {
  margin: 0 0 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

.obs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.obs-table th, .obs-table td {
  padding: 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}

.obs-table th { color: var(--muted); font-weight: 600; }

.obs-table td input {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 8px;
  color: var(--text);
  font-family: ui-monospace, "Cascadia Mono", "Consolas", monospace;
  font-size: 0.78rem;
}

.obs-table td .copy-btn {
  font-size: 0.78rem;
  padding: 6px 10px;
  white-space: nowrap;
}

.obs-table tr.self td:first-child::after {
  content: " (moi)";
  color: var(--accent);
  font-size: 0.75rem;
}