:root {
  --bg: #0f1114;
  --panel: #1a1d23;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #f4b400;
  --cyan: #4dd0e1;
  --green: #69f0ae;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--panel);
  border-bottom: 1px solid #2a2f38;
}

.header-titles {
  flex: 1;
  min-width: 0;
}

header h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.backend-info {
  margin: 0.2rem 0 0;
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.35;
}

.logo-wrap {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  overflow: hidden;
  background: #2a2f38;
  flex-shrink: 0;
}

.logo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.logo-fallback {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: var(--accent);
  text-align: center;
  line-height: 1.2;
  padding: 4px;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1rem;
  padding: 1rem;
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.side {
  background: var(--panel);
  border-radius: 12px;
  padding: 1rem;
  border: 1px solid #2a2f38;
}

.side h2 {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
}

label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0.5rem 0 0.25rem;
}

select,
button {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border-radius: 8px;
  border: 1px solid #3a4049;
  background: #242830;
  color: var(--text);
  font-size: 0.9rem;
}

button {
  margin-top: 0.75rem;
  cursor: pointer;
  background: linear-gradient(180deg, #3d4450, #2f343e);
  border-color: #4a5160;
}

button:hover {
  filter: brightness(1.08);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button.primary {
  border-color: #8d6e00;
  background: linear-gradient(180deg, #f4b400, #c49000);
  color: #1a1a1a;
  font-weight: 600;
}

.status {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}

.status strong {
  color: var(--cyan);
}

.main {
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #2a2f38;
  position: relative;
  min-height: 360px;
}

.main video {
  display: none;
}

.main img#out {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: top;
}

.placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.95rem;
}

.coach {
  margin-top: 1rem;
  padding: 0.75rem;
  background: #12151a;
  border-radius: 10px;
  border: 1px solid #2a2f38;
  min-height: 80px;
}

.coach h3 {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  color: var(--green);
}

.coach p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.5;
}

.row-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.row-btns button {
  margin-top: 0.5rem;
}

.row-btns-one {
  grid-template-columns: 1fr;
}

.glm-rt {
  margin-top: 0.75rem;
  padding: 0.65rem 0.5rem;
  border-radius: 8px;
  background: #141820;
  border: 1px solid #2a3140;
}

.glm-rt-title {
  margin: 0 0 0.35rem;
  font-size: 0.82rem;
  color: var(--cyan);
  font-weight: 600;
}

.glm-rt-warn {
  margin: 0 0 0.5rem;
  padding: 0.5rem 0.55rem;
  font-size: 0.78rem;
  line-height: 1.45;
  color: #ffcdd2;
  background: #3e2723;
  border: 1px solid #e57373;
  border-radius: 6px;
}

.glm-rt-warn code {
  font-size: 0.72rem;
  color: #ffccbc;
}

.glm-rt-hint {
  margin: 0 0 0.5rem;
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.45;
}

.glm-rt-hint code {
  font-size: 0.68rem;
  color: #b0bec5;
}

.glm-rt-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.glm-rt-row button {
  font-size: 0.78rem;
  padding: 0.35rem 0.55rem;
}

.glm-rt-status {
  margin: 0.4rem 0 0;
  font-size: 0.75rem;
  color: var(--green);
  min-height: 1.2em;
}

.glm-rt-log {
  margin-top: 0.35rem;
  max-height: 120px;
  overflow: auto;
  background: #0c0e12;
  border-radius: 6px;
  padding: 0.35rem 0.45rem;
}

.glm-rt-log pre {
  margin: 0;
  font-size: 0.68rem;
  color: #9aa0a6;
  white-space: pre-wrap;
  word-break: break-all;
}

.hidden {
  display: none !important;
}