:root {
  --bg-main: #0a1418;
  --bg-panel: #101f24;
  --bg-panel-soft: #183038;
  --line-main: rgba(137, 225, 217, 0.32);
  --text-main: #edf6f4;
  --text-sub: #9bc0ba;
  --accent-primary: #ff7b48;
  --accent-secondary: #3fd9cc;
  --state-ready: #84d7ff;
  --state-connecting: #ffc266;
  --state-connected: #59e3a5;
  --state-reconnecting: #ffd37a;
  --state-disconnected: #f5a5a5;
  --state-error: #ff6b6b;
  --shadow-main: 0 22px 44px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Gmarket Sans", "NanumSquare Neo", "Noto Sans KR", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at 8% 12%, rgba(63, 217, 204, 0.18), transparent 32%),
    radial-gradient(circle at 92% 18%, rgba(255, 123, 72, 0.2), transparent 30%),
    linear-gradient(140deg, #060d10 0%, #0a161b 42%, #102028 100%);
}

.app-shell {
  width: min(1040px, 92vw);
  margin: 28px auto;
  display: grid;
  gap: 16px;
}

.meta-panel,
.video-panel,
.control-panel,
.log-panel {
  border: 1px solid var(--line-main);
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(16, 31, 36, 0.95), rgba(13, 24, 29, 0.92));
  box-shadow: var(--shadow-main);
}

.meta-panel {
  padding: 20px;
}

.meta-panel h1 {
  margin: 0 0 14px;
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
  letter-spacing: 0.02em;
}

.meta-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.meta-item {
  padding: 12px;
  border-radius: 12px;
  background: linear-gradient(160deg, rgba(24, 48, 56, 0.9), rgba(13, 30, 36, 0.86));
  border: 1px solid rgba(137, 225, 217, 0.15);
}

.meta-item .label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--text-sub);
  letter-spacing: 0.08em;
}

.meta-item strong {
  font-size: 1rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-pill::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--state-ready);
  box-shadow: 0 0 10px rgba(132, 215, 255, 0.8);
}

.video-panel {
  padding: 16px;
}

.video-frame {
  position: relative;
  min-height: 320px;
  border-radius: 14px;
  border: 1px dashed rgba(137, 225, 217, 0.33);
  background:
    linear-gradient(20deg, rgba(255, 123, 72, 0.06), transparent 40%),
    linear-gradient(220deg, rgba(63, 217, 204, 0.12), rgba(9, 17, 20, 0.86));
  overflow: hidden;
}

.video-container,
.video-container video {
  width: 100%;
  height: 100%;
}

.video-container video {
  display: block;
  object-fit: contain;
  background: #020607;
}

.placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  color: #bfd6d2;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.control-panel {
  padding: 14px 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease, border-color 140ms ease;
}

.btn:hover:enabled {
  transform: translateY(-1px);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.btn-primary {
  background: linear-gradient(140deg, #ff8d4e, #ff6d3f);
  color: #1b0d07;
  border-color: rgba(255, 177, 141, 0.5);
}

.btn-secondary {
  background: linear-gradient(140deg, #49dfcb, #2bc9bc);
  color: #042522;
  border-color: rgba(146, 255, 237, 0.4);
}

.btn-ghost {
  background: rgba(16, 31, 36, 0.6);
  border-color: rgba(137, 225, 217, 0.45);
  color: var(--text-main);
}

.log-panel {
  padding: 16px;
}

.log-panel h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  color: #d2ebe7;
}

.event-log {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.event-log li {
  border: 1px solid rgba(137, 225, 217, 0.16);
  border-radius: 10px;
  padding: 8px 10px;
  background: rgba(8, 18, 22, 0.78);
  color: #b9d7d2;
  font-size: 0.89rem;
}

.status-ready::before {
  background: var(--state-ready);
  box-shadow: 0 0 10px rgba(132, 215, 255, 0.8);
}

.status-connecting::before {
  background: var(--state-connecting);
  box-shadow: 0 0 10px rgba(255, 194, 102, 0.8);
}

.status-connected::before {
  background: var(--state-connected);
  box-shadow: 0 0 10px rgba(89, 227, 165, 0.8);
}

.status-reconnecting::before {
  background: var(--state-reconnecting);
  box-shadow: 0 0 10px rgba(255, 211, 122, 0.8);
}

.status-disconnected::before {
  background: var(--state-disconnected);
  box-shadow: 0 0 10px rgba(245, 165, 165, 0.75);
}

.status-error::before {
  background: var(--state-error);
  box-shadow: 0 0 10px rgba(255, 107, 107, 0.8);
}

@media (max-width: 860px) {
  .meta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .video-frame {
    min-height: 280px;
  }
}

@media (max-width: 560px) {
  .app-shell {
    width: min(100%, 96vw);
    margin: 16px auto;
  }

  .meta-grid {
    grid-template-columns: 1fr;
  }

  .video-frame {
    min-height: 210px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}