:root {
  --background_color: #0f172a;
  --card_color: #1e293b;
  --text_color: #f8fafc;
  --muted_color: #94a3b8;
  --accent_color: #22c55e;
  --danger_color: #ef4444;
  --border_color: #334155;
}

* {
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #1e293b, #020617 65%);
  color: var(--text_color);
  display: grid;
  place-items: center;
  padding: 16px;
}

.container {
  width: 100%;
  max-width: 720px;
  background: rgba(30, 41, 59, 0.9);
  border: 1px solid var(--border_color);
  border-radius: 12px;
  padding: 20px;
  backdrop-filter: blur(6px);
}

.login_container {
  max-width: 520px;
}

.title {
  margin: 0 0 8px 0;
  font-size: 1.4rem;
}

.subtitle {
  margin: 0 0 18px 0;
  color: var(--muted_color);
  font-size: 0.95rem;
}

.form_row {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 1fr auto;
  margin-bottom: 12px;
}

.login_row {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
  margin-bottom: 12px;
}

input,
button {
  border-radius: 8px;
  border: 1px solid var(--border_color);
  padding: 10px 12px;
  font-size: 0.95rem;
  outline: none;
}

input {
  background: #0f172a;
  color: var(--text_color);
}

button {
  background: var(--accent_color);
  color: #052e16;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.leave_button {
  background: var(--danger_color);
  color: white;
  margin-left: 8px;
}

.session_row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.status {
  margin: 10px 0;
  color: var(--muted_color);
  min-height: 1.2em;
}

.mic_row {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr auto;
  margin-bottom: 12px;
}

select {
  border-radius: 8px;
  border: 1px solid var(--border_color);
  padding: 10px 12px;
  font-size: 0.95rem;
  outline: none;
  background: #0f172a;
  color: var(--text_color);
}

.peers_box,
.audio_box {
  border: 1px solid var(--border_color);
  border-radius: 8px;
  padding: 12px;
  background: rgba(15, 23, 42, 0.8);
}

.audio_box {
  margin-top: 12px;
}

.peers_title {
  margin: 0 0 8px 0;
  font-size: 1rem;
  color: var(--muted_color);
}

.peer_item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  border-bottom: 1px dashed #334155;
  font-size: 0.95rem;
}

.peer_item:last-child {
  border-bottom: none;
}

.peer_state {
  color: #a7f3d0;
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  .form_row {
    grid-template-columns: 1fr;
  }
}