:root {
  --sky-50: #f0faff;
  --sky-100: #d8f2ff;
  --sky-200: #b9e6ff;
  --sky-400: #65bfff;
  --sky-500: #43b3ff;
  --ink: #17456a;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: linear-gradient(160deg, var(--sky-50), var(--sky-100));
  min-height: 100vh;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #cce9ff;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(8px);
}

.brand {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
}

.brand p {
  margin: 0.15rem 0 0;
  font-size: 0.9rem;
  color: #37719b;
}

.brand-star {
  display: inline-grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  background: var(--sky-200);
  color: #1f6f9c;
  font-size: 1.2rem;
}

.follow-btn {
  border: none;
  background: var(--sky-500);
  color: white;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.65rem 1rem;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.follow-btn:hover {
  transform: translateY(-1px);
  background: var(--sky-400);
}

.layout {
  max-width: 1150px;
  margin: 1.2rem auto;
  padding: 0 1rem 1.2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
}

.card {
  background: var(--card);
  border-radius: 14px;
  border: 1px solid #d5ecff;
  box-shadow: 0 10px 24px rgba(90, 166, 212, 0.14);
}

.player-panel {
  position: relative;
  padding: 1rem;
}

.live-badge {
  position: absolute;
  top: 1.5rem;
  left: 1.5rem;
  z-index: 1;
  background: #ff5f7a;
  color: #fff;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  padding: 0.25rem 0.6rem;
}

.video-frame {
  min-height: 410px;
  border-radius: 12px;
  background: radial-gradient(circle at 50% 30%, #daf2ff 0%, #9dd8ff 50%, #7cc7fb 100%);
  display: grid;
  place-items: center;
  text-align: center;
  overflow: hidden;
  position: relative;
}

.avatar-glow {
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.08));
  filter: blur(1px);
  position: absolute;
}

.avatar {
  position: relative;
  z-index: 1;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 4px solid #fff;
  display: grid;
  place-items: center;
  font-size: 1.8rem;
  font-weight: 700;
  color: #176799;
  background: linear-gradient(135deg, #ffffff, #e8f6ff);
}

.stream-title {
  position: absolute;
  bottom: 1.2rem;
  left: 0;
  right: 0;
  font-size: 1.02rem;
  font-weight: 600;
  color: #0d5179;
}

.stream-meta {
  margin-top: 0.9rem;
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stream-meta div {
  background: #f4fbff;
  border-radius: 10px;
  padding: 0.7rem;
}

.stream-meta p {
  margin: 0.35rem 0 0;
  font-size: 0.94rem;
}

.side-panel {
  display: grid;
  gap: 1rem;
}

.schedule,
.chat-box {
  padding: 1rem;
}

h2 {
  margin: 0 0 0.8rem;
  font-size: 1.05rem;
}

.schedule ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.schedule li {
  background: #f5fbff;
  border-radius: 8px;
  padding: 0.55rem 0.65rem;
  font-size: 0.93rem;
}

.schedule li span {
  font-weight: 600;
  margin-right: 0.35rem;
}

.chat-list {
  height: 260px;
  overflow-y: auto;
  border: 1px solid #daf0ff;
  border-radius: 10px;
  padding: 0.6rem;
  background: #fafeff;
}

.chat-item {
  margin-bottom: 0.55rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid #e9f5ff;
  font-size: 0.9rem;
}

.chat-item strong {
  color: #1e77ac;
}

.chat-form {
  margin-top: 0.7rem;
  display: flex;
  gap: 0.5rem;
}

.chat-form input {
  flex: 1;
  border: 1px solid #cde8fb;
  border-radius: 9px;
  padding: 0.55rem 0.65rem;
}

.chat-form button {
  border: none;
  border-radius: 9px;
  padding: 0.55rem 0.9rem;
  background: var(--sky-400);
  color: white;
  cursor: pointer;
}

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

  .video-frame {
    min-height: 300px;
  }

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