*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #13315c;
  --surface: #134074;
  --border: #0b2545;
  --accent: #f4e9cd;
  --text: #eef4ed;
  --muted: #9dbebb;
}

 body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
  }

  /* Animated background grid */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: 
      linear-gradient(rgba(157,190,187,0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(157,190,187,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
  }

/* ── NAV SHELL ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--border);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 64px;
}

/* ── TITLE ── */
.nav-title {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.nav-logo {
  height: 40px;
  width: auto;
  display: block;
  filter: drop-shadow(0 0 6px rgba(79, 168, 197, 0.7)) drop-shadow(0 0 14px rgba(79, 168, 197, 0.4));
}

.nav-title-text {
  font-family: 'Barlow Condensed', 'DM Sans', sans-serif;
  font-size: 2.0rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: linear-gradient(to right, #4fa8c5, #1a5f82);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 6px rgba(79, 168, 197, 0.7)) drop-shadow(0 0 14px rgba(79, 168, 197, 0.4));
}

.nav-links { list-style: none; display: flex; align-items: center; gap: 0.15rem; margin: 0; padding: 0; }

/* Nav shell */
nav#mainNav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(11, 37, 69, 0.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(79, 168, 197, 0.2);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(79, 168, 197, 0.15) inset;
}

/* Inner layout */
nav#mainNav .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 68px;
  max-width: 1400px;
  margin: 0 auto;
}

/* Brand / logo */
nav#mainNav .nav-title {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

nav#mainNav .nav-logo {
  height: 38px;
  width: auto;
  filter: drop-shadow(0 0 8px rgba(79, 168, 197, 0.8)) drop-shadow(0 0 20px rgba(79, 168, 197, 0.35));
  transition: filter 0.3s ease;
}

nav#mainNav .nav-title:hover .nav-logo {
  filter: drop-shadow(0 0 12px rgba(79, 168, 197, 1)) drop-shadow(0 0 28px rgba(79, 168, 197, 0.6));
}

nav#mainNav .nav-brand {
  font-family: 'Barlow Condensed', 'DM Sans', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: linear-gradient(to right, #4fa8c5, #1a5f82);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

/* Nav links */
nav#mainNav .nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(200, 220, 235, 0.7);
  text-decoration: none;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

nav#mainNav .nav-link-icon {
  font-size: 0.55rem;
  opacity: 0.5;
  transition: opacity 0.2s, color 0.2s;
}

nav#mainNav .nav-link:hover,
nav#mainNav .nav-link.active {
  color: #eef4ed;
  background: rgba(79, 168, 197, 0.12);
  border-color: rgba(79, 168, 197, 0.25);
}

nav#mainNav .nav-link:hover .nav-link-icon,
nav#mainNav .nav-link.active .nav-link-icon {
  color: #4fa8c5;
  opacity: 1;
}

/* Animated underline */
nav#mainNav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 5px;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: linear-gradient(90deg, transparent, #4fa8c5, transparent);
  transform: translateX(-50%);
  transition: width 0.3s ease;
  border-radius: 2px;
}

nav#mainNav .nav-link:hover::after,
nav#mainNav .nav-link.active::after {
  width: 55%;
}

/* Live status badge */
nav#mainNav .nav-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 1.2rem;
  padding: 0.35rem 0.8rem;
  border-radius: 20px;
  background: rgba(40, 167, 69, 0.1);
  border: 1px solid rgba(40, 167, 69, 0.3);
  flex-shrink: 0;
}

nav#mainNav .status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #28a745;
  box-shadow: 0 0 6px rgba(40, 167, 69, 0.8);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 4px rgba(40, 167, 69, 0.6); transform: scale(1); }
  50%       { box-shadow: 0 0 10px rgba(40, 167, 69, 1);  transform: scale(1.2); }
}

nav#mainNav .status-text {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #28a745;
}

/* Hamburger */
nav#mainNav .hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: rgba(79, 168, 197, 0.08);
  border: 1px solid rgba(79, 168, 197, 0.25);
  border-radius: 8px;
  cursor: pointer;
  padding: 10px;
  transition: background 0.2s, border-color 0.2s;
}

nav#mainNav .hamburger:hover {
  background: rgba(79, 168, 197, 0.18);
  border-color: rgba(79, 168, 197, 0.5);
}

nav#mainNav .hamburger span {
  display: block;
  height: 1.5px;
  background: #9dbebb;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.2s;
  transform-origin: center;
}

nav#mainNav .hamburger:hover span { background: #4fa8c5; }
nav#mainNav .hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
nav#mainNav .hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
nav#mainNav .hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile drawer */
nav#mainNav .mobile-menu {
  display: none;
  flex-direction: column;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease, padding 0.4s ease;
  border-top: 1px solid transparent;
  background: rgba(11, 37, 69, 0.97);
  padding: 0 1.5rem;
}

nav#mainNav .mobile-menu.open {
  max-height: 480px;
  border-top-color: rgba(79, 168, 197, 0.2);
  padding: 0.75rem 1.5rem 1rem;
}

nav#mainNav .mobile-link {
  display: flex;
  align-items: center;
  padding: 0.85rem 0.5rem;
  color: rgba(200, 220, 235, 0.75);
  text-decoration: none;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(79, 168, 197, 0.1);
  transition: color 0.2s, padding-left 0.2s;
}

nav#mainNav .mobile-link:last-child { border-bottom: none; }

nav#mainNav .mobile-link:hover,
nav#mainNav .mobile-link.active {
  color: #4fa8c5;
  padding-left: 1rem;
}

nav#mainNav .mobile-divider {
  height: 1px;
  background: rgba(79, 168, 197, 0.15);
  margin: 0.25rem 0;
}

nav#mainNav .mobile-link-about { color: rgba(244, 233, 205, 0.7); }
nav#mainNav .mobile-link-about:hover { color: #f4e9cd; }

/* Responsive */
@media (max-width: 720px) {
  nav#mainNav .nav-inner { padding: 0 1.25rem; }
  nav#mainNav .nav-links  { display: none; }
  nav#mainNav .nav-status { display: none; }
  nav#mainNav .hamburger  { display: flex; }
  nav#mainNav .mobile-menu { display: flex; }
}

/*homers code*/
.ctrl-dropdown {
  position: relative;
}

.ctrl-toggle {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
}

.ctrl-label {
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-right: 1px solid var(--border);
  padding-right: 0.55rem;
  margin-right: 0.1rem;
}

.ctrl-value {
  color: var(--text);
  font-size: 0.875rem;
}

/* ── CTRL DROPDOWN MENU PANEL (base — hidden by default) ── */
.ctrl-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 160px;
  background: var(--surface);
  border: 1px solid rgba(79, 168, 197, 0.35);
  border-radius: 6px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
  z-index: 300;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
  padding: 4px 0;
}

.ctrl-menu a {
  display: block;
  padding: 1rem 1rem;
  color: var(--text);
  text-decoration: none;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.875rem;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}

.ctrl-menu a:hover {
  background: rgba(79, 168, 197, 0.15);
  color: #4fa8c5;
}

/* add a thin divider between items */
.ctrl-menu a + a {
  border-top: 1px solid var(--border);
}

/* when pointer is over an item, make its divider a pastel blue too */
.ctrl-menu a:hover,
.ctrl-menu a:hover + a {
  border-top-color: rgba(79, 168, 197, 0.3);
}
/* open state — JS toggles this class */
.ctrl-menu.ctrl-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ── CTRL TOGGLE BUTTON BASE STYLES ── */
.ctrl-toggle {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.5rem;
  cursor: pointer;
  color: var(--text);
  transition: border-color 0.2s;
}

.ctrl-toggle:hover {
  border-color: rgba(79, 168, 197, 0.6);
}

.chevron {
  transition: transform 0.2s ease;
  color: var(--muted);
  flex-shrink: 0;
}

.ctrl-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.9rem;
  background: var(--bg);
  cursor: pointer;
}

.ctrl-toggle-wrap .ctrl-label {
  border-right: none;
  padding-right: 0;
  margin-right: 0;
}

.ctrl-number {
  width: 60px;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.875rem;
  outline: none;
  padding: 0;
}

.ctrl-fetch-btn {
  margin-left: 0;
}

.ctrl-dropdown .dropdown-menu {
  z-index: 200;
}
.container {
  background-color: var(--surface);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
  margin: 24px auto;
  max-width: 960px;
  /* allow children (like charts) to overflow vertically */
  overflow: visible;
  display: flex;
  flex-direction: column;
}

/* ensure chart container and wrapper grow to fit their canvas */
#chartContainer {
  overflow: visible;
  /* maintain sensible baseline height even before chart drawn */
  min-height: clamp(300px, 50vw, 600px);
}

.chart-wrapper {
  /* make sure canvas has room; height already controlled by clamp above */
  width: 100%;
}

.container h1 {
  color: var(--accent);
  margin-bottom: 16px;
  font-family: 'Barlow Condensed', sans-serif;
}

.controls {
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 5px 0 0 5px;

}

.controls label {
  color: var(--text);
  font-size: 0.875rem;
}

.controls select,
.controls input[type="number"] {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 0.875rem;
  cursor: pointer;
}

.controls input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.controls button {
  padding: 8px 18px;
  background: var(--bg);
  color: var(--accent);
  border: 1px solid var(--bg);
  border-radius: 4px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.controls button:hover {
  background: var(--accent);
  color: var(--bg);
}

#chartContainer {
  position: relative;
  width: 100%;
  height: auto;
  /* ensure parent expands: reserve plenty of vertical space for the chart */
  min-height: clamp(300px, 50vw, 600px);
}

#chartContainer h3 {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 6px;
}

#output {
  color: var(--muted);
  font-size: 0.75rem;
  max-height: 120px;
  overflow-y: auto;
  background: var(--border);
  padding: 8px;
  border-radius: 4px;
  margin-bottom: 12px;
  white-space: pre-wrap;
  word-break: break-all;
}

.chart-wrapper {
  position: relative;
  width: 100%;
  height: clamp(250px, 45vw, 480px);
}

.chart-wrapper canvas {
  width: 100% !important;
  height: 100% !important;
}

@media (max-width: 600px) {
  .container {
    margin: 5px;
    padding: 14px;
  }

  .chart-wrapper {
    height: clamp(220px, 60vw, 320px);
  }

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

 /*doms page*/
    * { margin: 0; padding: 0; box-sizing: border-box; }

    body {
      background: #13315c;
      color: #eef4ed;
      font-family: 'Barlow Condensed', sans-serif;
    }

    h2 {
      padding: 16px 20px;
      background: #0b2545;
      color: #eef4ed;
      font-size: 1.1rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      border-bottom: 1px solid rgba(79, 168, 197, 0.3);
      transition: background 0.15s;
    }

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

    /* Dark tile overlay to tint OSM tiles toward the brand palette */
    .leaflet-tile-pane {
      filter: hue-rotate(190deg) saturate(0.6) brightness(0.6);
    }

    /* Popup styling */
    .leaflet-popup-content-wrapper {
      background: #134074;
      color: #eef4ed;
      border: 1px solid rgba(79, 168, 197, 0.4);
      border-radius: 6px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    }
    .leaflet-popup-tip {
      background: #134074;
    }
    .leaflet-popup-content b {
      color: #4fa8c5;
    }
    .leaflet-popup-close-button {
      color: #9dbebb !important;
    }

    /* Layout */
    .container {
      display: flex;
      height: calc(100vh - 68px);
    }
    /* chart layout used for chart page (sidebar + main content) */
    .chart-layout {
      display: flex;
      flex-direction: row;
      height: calc(100vh - 68px);
      width: 100vw;
    }

    /* main content area beside sidebar */
    .chart-layout .main-content {
      flex: 1 1 auto;
      padding: 20px;
      overflow: auto;
    }

    /* make sidebar stack on narrow screens */
    @media (max-width: 900px) {
      .chart-layout {
        flex-direction: column;
        /* remove fixed viewport height so content can scroll naturally */
        height: auto;
        min-height: calc(100vh - 68px - 53px); /* nav + page-header */
      }

      .chart-layout .sidebar {
        width: 100%;
        min-width: 0;
        /* cap sidebar so it doesn't eat the whole screen */
        max-height: 260px;
        padding: 1rem;
        margin: 0 1rem;
        overflow-y: auto;
        border-right: none;
        border-bottom: 1px solid rgba(79,168,197,0.2);
      }

      /* controls wrap into a tighter grid on mobile */
      .chart-layout .controls {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        padding: 12px;
      }

      /* each control stretches to fill available row width */
      .chart-layout .ctrl-dropdown,
      .chart-layout .ctrl-toggle-wrap,
      .chart-layout .ctrl-fetch-btn {
        flex: 1 1 calc(50% - 8px);
        min-width: 140px;
      }

      /* Fetch button spans full width for easy tap */
      .chart-layout .ctrl-fetch-btn {
        flex: 1 1 100%;
      }

      /* chart wrapper fills remaining height sensibly */
      .chart-layout .chart-wrapper {
        height: clamp(260px, 55vw, 420px);
      }

      /* give main-content breathing room */
      .chart-layout .main-content {
        padding: 12px;
        overflow: visible;
      }
    }

    /* Extra-small phones */
    @media (max-width: 480px) {
      .chart-layout .sidebar {
        max-height: 220px;
      }

      .chart-layout .ctrl-dropdown,
      .chart-layout .ctrl-toggle-wrap {
        flex: 1 1 100%;
      }

      .chart-layout .chart-wrapper {
        height: clamp(220px, 65vw, 340px);
      }

      .page-header {
        font-size: 1.1rem;
        padding: 10px 14px;
      }
    }

    /* when viewing the chart page, don't constrain the navbar or container width */
    body.chart-page nav#mainNav .nav-inner {
      max-width: none;
      margin: 0;
      padding: 0 1.25rem; /* keep some side padding if preferred */
    }

    /* no container on chart page */

    /* Sidebar (styled like the sensor-panel) */
    .sidebar {
      width: 260px;
      min-width: 260px;
      background: var(--surface);
      border: 1px solid var(--border);
      overflow-y: auto;
      display: flex;
      flex-direction: column;
    }

    .sidebar-title {
      padding: 1rem 1.2rem;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--muted);
      background: none;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    /* page header for chart view */
    .page-header {
      padding: 16px 20px;
      background: #0b2545;
      color: #eef4ed;
      font-size: 1.1rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      border-bottom: 1px solid rgba(79, 168, 197, 0.3);
    }

    .sensor-card {
      padding: 14px 16px;
      border-bottom: 1px solid rgba(79, 168, 197, 0.1);
      cursor: pointer;
      transition: background 0.15s;
    }

    .sensor-card:hover {
      background: rgba(79, 168, 197, 0.08);
    }

    .sensor-card.active {
      background: rgba(79, 168, 197, 0.15);
      border-left: 3px solid #4fa8c5;
    }

    .sensor-card .sensor-name {
      font-size: 0.9rem;
      font-weight: 600;
      color: #eef4ed;
      margin-bottom: 4px;
    }

    .sensor-card .sensor-coords {
      font-size: 0.75rem;
      color: #9dbebb;
      font-family: monospace;
      margin-bottom: 8px;
    }

    .sensor-card .go-btn {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      font-size: 0.7rem;
      color: #4fa8c5;
      text-decoration: none;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      border: 1px solid rgba(79, 168, 197, 0.35);
      padding: 3px 8px;
      border-radius: 3px;
      transition: background 0.15s, color 0.15s;
    }

    .sensor-card .go-btn:hover {
      background: #4fa8c5;
      color: #0b2545;
    }

    /* Attribution */
    .leaflet-control-attribution {
      background: rgba(11, 37, 69, 0.85) !important;
      color: #9dbebb !important;
    }
    .leaflet-control-attribution a {
      color: #4fa8c5 !important;
    }

    /* Zoom controls */
    .leaflet-control-zoom a {
      background: #134074 !important;
      color: #eef4ed !important;
      border-color: rgba(79, 168, 197, 0.3) !important;
    }
    .leaflet-control-zoom a:hover {
      background: #4fa8c5 !important;
      color: #0b2545 !important;
    }

.map-container {
  display: flex;
  height: calc(100vh - 68px);
  overflow: hidden;
}

#map {
  flex: 1;
  height: 100%;
  width: 100%;
}

/* Mobile adjustments: stack sidebar above map and limit heights */
@media (max-width: 720px) {
  .map-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    min-width: 0;
    max-height: 40vh;
    overflow-y: auto;
    border-right: none;
    border-bottom: 1px solid rgba(79, 168, 197, 0.15);
  }
  #map {
    height: 60vh;
  }
}

/*dreaded sensors page*/
 main {
    position: relative;
    z-index: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
  }

  /* PAGE TITLE */
  .page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 2rem;
    animation: fadeSlideIn 0.6s ease forwards;
  }

  @keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .page-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 4px;
  }

  .network-name {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    line-height: 1;
  }

  .network-name span { color: var(--muted); }

  .update-info {
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 6px;
    font-family: 'Share Tech Mono', monospace;
  }

  .uptime-block {
    text-align: right;
  }

  .uptime-value {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--muted);
    line-height: 1;
  }

  .uptime-label {
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: 4px;
  }

  /* STAT CARDS ROW */
  .stats-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    animation: fadeSlideIn 0.6s ease 0.1s both;
  }

  .stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem 1.2rem;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s, box-shadow 0.3s;
  }

  .stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    opacity: 0.5;
  }

  .stat-card:hover {
    border-color: var(--border-bright);
    box-shadow: var(--glow);
  }

  .stat-label {
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 6px;
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 600;
  }

  .stat-value {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
  }

  .stat-value.online { color: #9dbebb; }
  .stat-value.alert { color: var(--accent); }
  .stat-value.offline { color: #ef5350; }
  .stat-value.temp { color: var(--muted); }
  .stat-value.humidity { color: var(--muted); }

  /* MAIN GRID */
  .main-grid {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 1.5rem;
    animation: fadeSlideIn 0.6s ease 0.2s both;
  }

  /* SENSOR PANEL */
  .sensor-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }

  .panel-header {
    padding: 1rem 1.2rem;
    border-bottom: 1px solid var(--border);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--muted);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .panel-header::before {
    content: '//';
    color: var(--muted);
    opacity: 0.7;
  }

  /* SENSOR CARD */
  .sensor-card {
    margin: 1.2rem;
    background: var(--border-col);
    border: 1px solid rgba(157,190,187,0.2);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
  }

  .sensor-card-header {
    padding: 0.9rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
  }

  .sensor-name {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--muted);
  }

  .node-id {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    color: var(--muted);
    margin-top: 2px;
  }

  .status-badge {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
  }

  .status-badge.online {
    background: rgba(78,223,155,0.15);
    border: 1px solid rgba(78,223,155,0.4);
    color: #9dbebb;
  }

  .sensor-metrics {
    padding: 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
  }

  .metric {
    background: rgba(10,22,40,0.6);
    border-radius: 8px;
    padding: 0.8rem;
  }

  .metric-icon {
    font-size: 1rem;
    margin-bottom: 4px;
    opacity: 0.8;
  }

  .metric-label {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 600;
  }

  .metric-value {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text);
  }

  .metric-bar {
    height: 3px;
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
  }

  .metric-bar-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 1s ease;
  }

  .metric-bar-fill.temp { background: linear-gradient(90deg, var(--cyan), var(--muted)); }
  .metric-bar-fill.humidity { background: linear-gradient(90deg, #9dbebb, #b8d8d8); }
  .metric-bar-fill.pm25 { background: linear-gradient(90deg, var(--muted), #9dbebb); }
  .metric-bar-fill.water { background: linear-gradient(90deg, #1a6fa8, var(--cyan)); }

  .sensor-footer {
    padding: 0.8rem 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    color: var(--muted);
  }

  .signal-info {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  /* LOCATION INFO */
  .right-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .right-panel .charts-row {
    flex: 1;
  }

  .right-panel .chart-card {
    height: 100%;
  }

  /* CHARTS ROW */
  .charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .chart-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    padding-bottom: 1rem;
  }

  .chart-title {
    padding: 0.9rem 1.2rem;
    border-bottom: 1px solid var(--border);
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--muted);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .chart-title::before { content: '//'; color: var(--muted); opacity: 0.7; }

  canvas {
    display: block;
    padding: 0.5rem 1rem 0;
    width: 100% !important;
  }

  /* Scrollbar */
  ::-webkit-scrollbar { width: 6px; }
  ::-webkit-scrollbar-track { background: var(--bg); }
  ::-webkit-scrollbar-thumb { background: var(--border-col); border-radius: 3px; }

  /* Animations */
  .sensor-card { animation: cardIn 0.5s ease 0.3s both; }
  @keyframes cardIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
  }

  .timestamp {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
    color: var(--muted);
  }