*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #0d1117;
  color: #c9d1d9;
  height: 100%;
}

body { display: flex; flex-direction: column; min-height: 100vh; }

a { color: #58a6ff; text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  font: inherit;
  background: #238636;
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  cursor: pointer;
  transition: background 120ms ease, transform 80ms ease;
}
button:hover { background: #2ea043; }
button:active { transform: scale(0.97); }
button:disabled { background: #444; cursor: not-allowed; opacity: 0.5; }
button.primary { background: #238636; }
button.primary:hover { background: #2ea043; }
button.secondary { background: #30363d; }
button.secondary:hover { background: #444c56; }
button.danger { background: #da3633; }
button.danger:hover { background: #f85149; }
button.full { width: 100%; }

input[type="text"], input[type="password"] {
  font: inherit;
  background: #0d1117;
  color: #c9d1d9;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 12px 14px;
  width: 100%;
}
input:focus { outline: none; border-color: #58a6ff; }

/* === login & app pages === */
.center-box {
  margin: auto;
  max-width: 360px;
  width: 90%;
  padding: 32px;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 12px;
}
.center-box h1 { margin: 0 0 24px; font-size: 22px; font-weight: 600; }
.center-box .row { margin-bottom: 14px; }
.center-box label { display: block; margin-bottom: 6px; font-size: 13px; color: #8b949e; }
.error { color: #f85149; margin-bottom: 14px; font-size: 14px; }
.muted { color: #8b949e; font-size: 14px; }

.topbar {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  background: #161b22;
  border-bottom: 1px solid #30363d;
  gap: 12px;
}
.topbar .title { font-weight: 600; }
.topbar .spacer { flex: 1; }

/* === guest join screen === */
.join {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.join-card {
  max-width: 360px;
  width: 100%;
  padding: 36px 28px;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 16px;
  text-align: center;
}
.join-card h1 { margin: 0 0 6px; font-size: 26px; }
.join-card p { margin: 0 0 22px; }
.join-card input { margin-bottom: 14px; }
.logo-circle {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #2ea043, #58a6ff);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================== */
/* === CALL SCREEN — PiP layout === */
/* ============================== */
body.call-body {
  background: #000;
  height: 100vh;
  height: 100dvh;        /* mobile-safe viewport */
  overflow: hidden;
  position: fixed;
  inset: 0;
}

.stage {
  position: relative;
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
}

#main-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;     /* no ugly zoom for portrait video on landscape screens */
  background: #000;
}

/* placeholder shown until remote stream arrives */
.placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #c9d1d9;
  pointer-events: none;
  background: linear-gradient(180deg, #161b22 0%, #0d1117 100%);
}
.placeholder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: #8b949e;
}

/* PiP — local preview, draggable corner */
.pip {
  position: absolute;
  top: 76px;
  right: 16px;
  width: 28vw;
  max-width: 180px;
  min-width: 110px;
  aspect-ratio: 3 / 4;
  border-radius: 14px;
  overflow: hidden;
  background: #161b22;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.55);
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease;
  touch-action: manipulation;
  z-index: 10;
}
.pip:hover { transform: scale(1.03); }
.pip:active { transform: scale(0.98); }
.pip video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}
.pip.local-cam-mirror video { transform: scaleX(-1); }
.pip-hint {
  position: absolute;
  top: 6px;
  right: 8px;
  background: rgba(0, 0, 0, 0.55);
  color: white;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 10px;
  pointer-events: none;
  user-select: none;
  letter-spacing: 1px;
}
.pip.no-video {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6e7681;
  font-size: 12px;
}
.pip.no-video video { display: none; }

/* desktop landscape: bigger PiP */
@media (min-width: 900px) {
  .pip {
    width: 22vw;
    max-width: 280px;
    aspect-ratio: 16 / 9;
    top: auto;
    bottom: 100px;
    right: 24px;
  }
}

/* === floating top bar === */
.topbar-floating {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  padding-top: max(14px, env(safe-area-inset-top));
  background: linear-gradient(180deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0) 100%);
  z-index: 5;
  pointer-events: none;
}
.topbar-floating > * { pointer-events: auto; }
.topbar-spacer { flex: 1; }

.status-pill {
  background: rgba(0, 0, 0, 0.6);
  color: #c9d1d9;
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  white-space: nowrap;
  max-width: 60vw;
  overflow: hidden;
  text-overflow: ellipsis;
}

.icon-btn {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  color: #c9d1d9;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.icon-btn:hover { background: rgba(0, 0, 0, 0.8); }
.icon-btn.copied {
  background: rgba(46, 160, 67, 0.85);
  border-color: rgba(46, 160, 67, 0.6);
  color: white;
}

/* === bottom controls === */
.controls-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 14px;
  padding: 16px;
  /* Bump bottom on mobile so controls sit above iOS Safari's overlay toolbar. */
  padding-bottom: max(20px, calc(env(safe-area-inset-bottom) + 12px));
  background: linear-gradient(0deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0) 100%);
  z-index: 5;
}
.ctrl-btn {
  width: 56px;
  height: 56px;
  padding: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  position: relative;
}
.ctrl-btn:hover { background: rgba(255, 255, 255, 0.22); }
.ctrl-btn .icon-off { display: none; }
.ctrl-btn.muted {
  background: rgba(255, 255, 255, 0.95);
  color: #0d1117;
}
.ctrl-btn.muted .icon-on { display: none; }
.ctrl-btn.muted .icon-off { display: block; }
.ctrl-btn.hangup {
  background: #da3633;
  border-color: rgba(255, 255, 255, 0.0);
}
.ctrl-btn.hangup:hover { background: #f85149; }
.ctrl-btn:disabled { opacity: 0.35; cursor: not-allowed; }

@media (max-width: 480px) {
  .ctrl-btn { width: 50px; height: 50px; }
  .controls-bar {
    gap: 10px;
    padding: 12px;
    /* Even more bottom space on phones — iOS Safari overlay toolbar eats ~50px. */
    padding-bottom: max(34px, calc(env(safe-area-inset-bottom) + 20px));
  }
}

/* === rooms list (host dashboard) === */
.rooms-list {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.rooms-list-title {
  font-size: 12px;
  letter-spacing: 1px;
  font-weight: 600;
  color: #6e7681;
  margin: 0 0 4px;
  text-transform: uppercase;
}
.room-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 10px;
}
.room-row .room-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: #c9d1d9;
  font-size: 13px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.room-row .room-id:hover { color: #58a6ff; }
.room-row .room-peers {
  font-size: 12px;
  color: #6e7681;
  font-variant-numeric: tabular-nums;
  min-width: 26px;
  text-align: right;
}
.room-row .icon-btn {
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px solid #30363d;
  color: #8b949e;
}
.room-row .icon-btn:hover { color: #c9d1d9; background: #161b22; }
.room-row .icon-btn.danger:hover { color: #f85149; border-color: #f85149; }
.rooms-list-empty {
  color: #6e7681;
  font-size: 13px;
  text-align: center;
  padding: 14px 0;
}

[hidden] { display: none !important; }