html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  font-family: sans-serif;
}

#map {
  height: 100%;
  width: 100%;
}

#logo-overlay {
  position: absolute;
  top: 40px;
  left: 100px;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  padding: 6px;
}

#logo-overlay img {
  height: 40px;
  display: block;
}

.quake-popup .magnitude {
  font-weight: 600;
  font-size: 1.25em;
}

.quake-popup .place {
  font-weight: 400;
  font-size: 1em;
}

.quake-popup .depth {
  font-size: 0.85em;
  opacity: 0.7;
  margin-top: 2px;
}

#key-box {
  position: absolute;
  bottom: 60px;
  right: 10px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid #ccc;
  padding: 10px 14px;
  font-size: 0.85em;
  border-radius: 8px;
  z-index: 1001;
  max-width: 330px;
  line-height: 1.4;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#key-box .key-title {
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 1em;
}

#key-box .key-items {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

#key-box .key-items li {
  margin: 4px 0;
}

#key-box .note {
  color: #666;
  font-size: 0.85em;
  font-style: italic;
}

span.note:nth-child(1) {
    display: block;
    padding-left: 1ch;
}

#key-box .feed-source {
  color: #000;
  font-weight: 500;
}

@media screen and (max-width: 600px) {
  #key-box {
    font-size: 0.75em;
    padding: 8px 10px;
    max-width: 90vw;
    bottom: 50px;
    right: 5px;
  }
}

.nav-toggle a.usgs-link {
  color: #333;
  text-decoration: none;
  font-size: 0.9em;
  margin-right: 10px;
  margin-left: 4px;
  cursor: pointer;
  position: relative;
  transition: color 0.2s ease-in-out;
}

.nav-toggle a.usgs-link::after {
  content: '|';
  position: absolute;
  right: -10px;
  color: #999;
}

.nav-toggle a.usgs-link:last-child {
  margin-right: 0;
}

.nav-toggle a.usgs-link:last-child::after {
  content: '';
}

.nav-toggle a.usgs-link:hover {
  color: #0077cc;
}

/* Highlight the active page */
body[data-mode="hour"] .usgs-link[href="/"],
body[data-mode="allday"] .usgs-link[href="/allday/"] {
  font-weight: bold;
  color: #222;
  text-decoration: underline;
}