:root {
  --bg-a: #fff4df;
  --bg-b: #d7edf3;
  --card: #fefcf7;
  --line: #d7d9cf;
  --text: #1f2731;
  --muted: #5f6a71;
  --primary: #0f6f75;
  --accent: #1f4c8f;
  --danger: #972d2d;
  --ok: #1f7a3a;
  --warn: #8e5f07;
  --shadow: 0 14px 28px rgba(18, 35, 48, 0.12);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Avenir Next", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 80% -10%, rgba(255, 255, 255, 0.7), transparent 40%),
    radial-gradient(circle at 10% 10%, rgba(255, 233, 198, 0.85), transparent 42%),
    linear-gradient(150deg, var(--bg-a), var(--bg-b));
  padding: 12px;
}

.app {
  max-width: 680px;
  margin: 0 auto;
  display: grid;
  gap: 10px;
}

.hero {
  padding: 8px 4px 2px;
}

.badge {
  margin: 0;
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #0d3f6f;
}

h1 {
  margin: 6px 0 4px;
  font-size: clamp(1.9rem, 7vw, 2.7rem);
  line-height: 1.04;
}

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

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
  box-shadow: var(--shadow);
}

.hidden {
  display: none;
}

h2 {
  margin: 0 0 10px;
  font-size: 1rem;
}

label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--muted);
  font-weight: 700;
}

.lobby-actions {
  margin-bottom: 10px;
}

.join-row {
  display: flex;
  gap: 8px;
}

input {
  width: 100%;
  min-height: 48px;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 10px 12px;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.btn {
  border-radius: 12px;
  border: 1px solid var(--line);
  min-height: 48px;
  padding: 10px 14px;
  font-size: 0.96rem;
  font-weight: 800;
  background: #ffffff;
  color: var(--text);
  cursor: pointer;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-small {
  min-height: 38px;
  padding: 8px 11px;
  font-size: 0.85rem;
}

.btn-primary {
  width: 100%;
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.btn-danger {
  background: #fff1f1;
  color: var(--danger);
  border-color: #f0c5c5;
}

.public-rooms {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: #fbfaf5;
}

.public-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.public-head h3 {
  margin: 0;
  font-size: 0.93rem;
}

.room-list {
  display: grid;
  gap: 8px;
}

.room-empty {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 8px;
}

.room-item {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #ffffff;
  min-height: 44px;
  padding: 8px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
}

.room-name {
  letter-spacing: 0.05em;
}

.room-wait {
  color: var(--muted);
  font-size: 0.85rem;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.tiny {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.room-code {
  margin: 2px 0 0;
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.top-actions {
  display: flex;
  gap: 6px;
}

.videos {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  background: #1a1f26;
  border: 1px solid #2d3947;
}

.remote-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  min-height: 280px;
  padding: 6px;
}

.empty-remote {
  grid-column: 1 / -1;
  min-height: 220px;
  display: grid;
  place-items: center;
  color: #b8c0cb;
  font-size: 0.95rem;
}

.peer-card {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background: #000;
  min-height: 140px;
}

.peer-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.peer-card p {
  position: absolute;
  left: 8px;
  bottom: 8px;
  margin: 0;
  color: #ffffff;
  font-size: 0.78rem;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.local-wrap {
  position: absolute;
  right: 8px;
  bottom: 8px;
  width: 32%;
  min-width: 110px;
  max-width: 160px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: #000;
}

.local-wrap video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.local-wrap p {
  position: absolute;
  left: 6px;
  bottom: 6px;
  margin: 0;
  color: #ffffff;
  font-size: 0.74rem;
}

.call-controls {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.control.on {
  border-color: #95d5a8;
  background: #e9fff0;
  color: var(--ok);
}

.control.off {
  border-color: #e6c0c0;
  background: #fff0f0;
  color: var(--danger);
}

.status {
  margin: 0;
  font-weight: 800;
}

.status[data-tone="muted"] {
  color: var(--muted);
}

.status[data-tone="ok"] {
  color: var(--ok);
}

.status[data-tone="warn"] {
  color: var(--warn);
}

.count {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (min-width: 700px) {
  body {
    padding: 22px;
  }

  .panel {
    border-radius: 18px;
    padding: 14px;
  }

  .remote-grid {
    min-height: 360px;
  }
}