:root {
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: #172033;
  background: #eef4f8;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(180deg, rgba(18, 78, 116, 0.10), rgba(238, 244, 248, 0) 320px),
    #eef4f8;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.shell {
  width: min(1320px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 40px;
}

.hero,
.toolbar,
.metric,
.message-card {
  border: 1px solid rgba(125, 150, 171, 0.28);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.90);
  box-shadow: 0 18px 42px rgba(20, 38, 58, 0.08);
}

.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 24px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 3px solid #168a9f;
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 8px;
  background: #123a55;
  color: #f4fbff;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0;
  box-shadow: inset 0 -3px 0 #16a3a3;
}

.hero h1 {
  margin: 0;
  color: #10263a;
  font-size: 30px;
  font-weight: 760;
  letter-spacing: 0;
}

.hero p {
  margin: 6px 0 0;
  color: #63758a;
  font-size: 14px;
}

.system-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  border: 1px solid rgba(22, 138, 159, 0.28);
  border-radius: 999px;
  background: #eefafa;
  color: #0f5965;
  padding: 0 13px;
  font-size: 13px;
  white-space: nowrap;
}

.pulse {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #14b8a6;
  box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.18);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.metric {
  padding: 15px 16px;
}

.metric span {
  display: block;
  color: #64748b;
  font-size: 13px;
}

.metric strong {
  display: block;
  margin-top: 8px;
  color: #12263a;
  font-size: 26px;
  font-weight: 760;
  letter-spacing: 0;
}

.metric.wide strong {
  font-size: 20px;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(180px, 260px) minmax(120px, 160px) 1fr auto;
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
  padding: 16px;
}

.toolbar label {
  display: grid;
  gap: 6px;
  color: #64748b;
  font-size: 13px;
}

.toolbar input,
.toolbar select {
  width: 100%;
  height: 42px;
  border: 1px solid #cbd7e2;
  border-radius: 6px;
  background: #ffffff;
  color: #172033;
  padding: 0 12px;
  outline: none;
}

.toolbar input:focus,
.toolbar select:focus {
  border-color: #168a9f;
  box-shadow: 0 0 0 3px rgba(22, 138, 159, 0.14);
}

.toolbar button,
.load-more {
  height: 42px;
  border-radius: 6px;
  background: #123a55;
  color: #ffffff;
  padding: 0 18px;
  white-space: nowrap;
}

.alert {
  margin-bottom: 16px;
  padding: 12px 14px;
  border: 1px solid #f0b46b;
  border-radius: 8px;
  background: #fff7ed;
  color: #9a3412;
}

.message-list {
  display: grid;
  gap: 12px;
}

.message-card {
  padding: 16px 18px;
}

.message-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.message-head a {
  color: #116b79;
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}

.message-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  min-height: 28px;
  color: #64748b;
  font-size: 13px;
}

.time {
  color: #10263a;
  font-weight: 650;
}

.badge {
  border-radius: 999px;
  background: #e8f7f4;
  color: #0f766e;
  padding: 3px 8px;
  font-size: 12px;
}

.media-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 400px));
  gap: 10px;
  margin-top: 12px;
}

.media-strip img,
.media-video {
  width: 100%;
  max-height: 430px;
  border-radius: 6px;
  border: 1px solid #dce5ee;
  object-fit: contain;
  background: #f8fafc;
}

.media-video {
  display: block;
  aspect-ratio: 16 / 9;
}

.video-poster {
  position: relative;
  display: block;
  overflow: hidden;
  color: #ffffff;
  text-decoration: none;
}

.video-poster img {
  display: block;
}

.video-poster::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.04), rgba(15, 23, 42, 0.42));
  pointer-events: none;
}

.play-mark {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 1;
  width: 58px;
  height: 58px;
  border-radius: 999px;
  background: rgba(18, 58, 85, 0.86);
  transform: translate(-50%, -50%);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.28);
}

.play-mark::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 18px;
  width: 0;
  height: 0;
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  border-left: 17px solid #ffffff;
}

.video-open {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 1;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.72);
  padding: 6px 10px;
  font-size: 12px;
}

.message-text {
  margin-top: 12px;
  color: #172033;
  font-size: 17px;
  line-height: 1.72;
  letter-spacing: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.empty,
.end {
  padding: 24px;
  border: 1px dashed #bfd0dc;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.84);
  color: #64748b;
  text-align: center;
}

.load-more {
  width: 100%;
  background: #2d485c;
}

@media (max-width: 920px) {
  .hero {
    align-items: flex-start;
    flex-direction: column;
  }

  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .toolbar .search {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  .shell {
    width: min(100vw - 20px, 1320px);
    padding-top: 10px;
  }

  .brand {
    align-items: flex-start;
  }

  .logo-mark {
    width: 48px;
    height: 48px;
    font-size: 15px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .metrics,
  .toolbar {
    grid-template-columns: 1fr;
  }

  .message-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .message-text {
    font-size: 16px;
  }
}