:root {
  --green-50: #ecfdf5;
  --green-100: #d1fae5;
  --green-400: #34d399;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-900: #14532d;

  --amber-600: #d97706;
  --orange-500: #f97316;
  --red-500: #ef4444;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(22, 101, 52, 0.12);
  --font: "DM Sans", system-ui, -apple-system, sans-serif;
  --transition: 0.22s ease;

  color-scheme: light;
  --bg-body: #f0fdf4;
  --bg-elevated: #ffffff;
  --bg-subtle: #ecfdf5;
  --bg-table-head: #d1fae5;
  --text-primary: #0f172a;
  --text-muted: #64748b;
  --border: rgba(22, 163, 74, 0.18);
  --border-strong: rgba(22, 163, 74, 0.35);
  --accent: var(--green-600);
  --accent-soft: rgba(22, 163, 74, 0.12);
  --accent-glow: rgba(34, 197, 94, 0.25);
  --page-gradient-1: rgba(236, 253, 245, 0.95);
  --page-gradient-2: rgba(209, 250, 229, 0.5);
  --page-glow-corner: transparent;
  --chart-grid: rgba(100, 116, 139, 0.18);
  --chart-vibration: #d97706;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg-body: #020403;
  --bg-elevated: #0a100e;
  --bg-subtle: #0f1613;
  --bg-table-head: #121c18;
  --text-primary: #e8fdf4;
  --text-muted: #8da399;
  --border: rgba(52, 211, 153, 0.12);
  --border-strong: rgba(52, 211, 153, 0.28);
  --accent: var(--green-400);
  --accent-soft: rgba(52, 211, 153, 0.1);
  --accent-glow: rgba(34, 197, 94, 0.18);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 10px 40px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 56px rgba(0, 0, 0, 0.65);
  --page-gradient-1: #030806;
  --page-gradient-2: #010302;
  --page-glow-corner: rgba(16, 185, 129, 0.08);
  --chart-grid: rgba(148, 163, 184, 0.1);
  --chart-vibration: #fbbf24;
}

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

html {
  scroll-behavior: smooth;
  background: var(--bg-body);
}

body {
  font-family: var(--font);
  background: var(--bg-body);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: clip;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--accent-glow), transparent 55%),
    radial-gradient(ellipse 55% 40% at 100% 100%, var(--page-glow-corner), transparent 60%),
    linear-gradient(
      168deg,
      var(--page-gradient-1) 0%,
      var(--page-gradient-2) 48%,
      var(--bg-body) 100%
    );
  pointer-events: none;
  transition: background var(--transition);
}

[data-theme="dark"] .page-bg {
  background:
    radial-gradient(ellipse 90% 55% at 50% -18%, var(--accent-glow), transparent 52%),
    radial-gradient(ellipse 45% 35% at 0% 100%, rgba(22, 163, 74, 0.06), transparent 55%),
    radial-gradient(ellipse 50% 38% at 100% 0%, rgba(52, 211, 153, 0.05), transparent 50%),
    linear-gradient(180deg, #010302 0%, var(--bg-body) 38%, #000000 100%);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 2rem);
  /* Space for fixed header (bar + surface padding); in-flow content starts below */
  padding-top: calc(clamp(1rem, 4vw, 2rem) + clamp(4.35rem, 10.5vw, 6.5rem));
}

.page-main-title {
  font-size: clamp(1.35rem, 3.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 clamp(1rem, 2.5vw, 1.35rem);
  color: var(--text-primary);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ——— Fixed glass header (viewport-fixed; page scrolls under it) ——— */
.header-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  margin: 0;
  padding-left: clamp(1rem, 4vw, 2rem);
  padding-right: clamp(1rem, 4vw, 2rem);
  padding-top: 0.65rem;
  padding-bottom: 0.65rem;
}

.header-bar__surface {
  max-width: 1180px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elevated) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow:
    var(--shadow-md),
    0 0 0 1px color-mix(in srgb, var(--accent) 12%, transparent),
    0 0 28px color-mix(in srgb, var(--accent-glow) 45%, transparent);
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    background var(--transition);
}

.header-bar__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "brand menu"
    "nav nav"
    "controls controls";
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 0.65rem clamp(0.65rem, 2vw, 1rem);
}

@media (min-width: 1100px) {
  .header-bar__row {
    grid-template-columns: minmax(180px, 1fr) minmax(0, auto) minmax(0, 1fr);
    grid-template-areas: "brand nav controls";
    gap: 0.5rem 1.25rem;
  }
}

.header-bar__brand {
  grid-area: brand;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

a.header-bar__brand {
  text-decoration: none;
  color: inherit;
}

a.header-bar__brand:hover .header-bar__title {
  color: var(--accent);
}

a.header-bar__brand:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 12px;
}

.logo-mark {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--border);
  box-shadow: 0 0 16px color-mix(in srgb, var(--accent-glow) 35%, transparent);
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform 0.2s ease;
}

.logo-mark--pulse {
  animation: logo-breathe 3.2s ease-in-out infinite;
}

@keyframes logo-breathe {
  0%,
  100% {
    box-shadow: 0 0 12px color-mix(in srgb, var(--accent-glow) 25%, transparent);
  }
  50% {
    box-shadow: 0 0 22px color-mix(in srgb, var(--accent-glow) 55%, transparent);
  }
}

.header-bar__titles {
  min-width: 0;
}

.header-bar__title {
  font-size: clamp(1.05rem, 3.2vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
  margin: 0 0 0.15rem;
}

.header-bar__subtitle {
  margin: 0;
  font-size: clamp(0.75rem, 2vw, 0.875rem);
  font-weight: 500;
  color: var(--text-muted);
  line-height: 1.35;
}

[data-theme="dark"] .header-bar__subtitle {
  color: color-mix(in srgb, var(--accent) 72%, var(--text-muted));
}

.header-bar__menu-btn {
  grid-area: menu;
  justify-self: end;
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-subtle) 70%, transparent);
  color: var(--text-primary);
  cursor: pointer;
  transition:
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

.header-bar__menu-btn:hover {
  border-color: var(--border-strong);
  box-shadow: 0 0 14px color-mix(in srgb, var(--accent-glow) 25%, transparent);
}

.header-bar__menu-icon {
  position: relative;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.header-bar__menu-icon::before,
.header-bar__menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease;
}

.header-bar__menu-icon::before {
  top: -7px;
}

.header-bar__menu-icon::after {
  top: 7px;
}

.header-bar.is-menu-open .header-bar__menu-icon {
  background: transparent;
}

.header-bar.is-menu-open .header-bar__menu-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.header-bar.is-menu-open .header-bar__menu-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.header-bar__nav {
  grid-area: nav;
}

.header-bar__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.2rem 0.15rem;
}

.header-bar__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    color var(--transition),
    background var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.header-bar__nav-link:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--border-strong) 50%, transparent);
}

.header-bar__nav-link.is-active {
  color: var(--text-primary);
  background: color-mix(in srgb, var(--accent-soft) 85%, transparent);
  border-color: var(--border-strong);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) 22%, transparent),
    0 0 18px color-mix(in srgb, var(--accent-glow) 50%, transparent);
}

.header-bar__nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  transform: translateX(-50%);
  width: 42%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.95;
  pointer-events: none;
}

.header-bar__controls {
  grid-area: controls;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.45rem 0.5rem;
}

.header-bar__conn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-subtle) 55%, transparent);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  cursor: default;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header-bar__conn:hover {
  border-color: var(--border-strong);
}

.header-bar__conn-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber-600);
  flex-shrink: 0;
}

.header-bar__conn-dot--pending {
  animation: conn-pulse-warn 1.6s ease-in-out infinite;
}

.header-bar__conn-dot--ok {
  background: var(--green-600);
  box-shadow: 0 0 10px color-mix(in srgb, var(--green-500) 65%, transparent);
  animation: conn-pulse-ok 2s ease-in-out infinite;
}

[data-theme="dark"] .header-bar__conn-dot--ok {
  background: var(--green-400);
}

.header-bar__conn-dot--warn {
  background: var(--amber-600);
  animation: conn-pulse-warn 2s ease-in-out infinite;
}

.header-bar__conn-dot--error {
  background: var(--red-500);
  animation: none;
  box-shadow: 0 0 8px color-mix(in srgb, var(--red-500) 45%, transparent);
}

@keyframes conn-pulse-ok {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.15);
    opacity: 0.85;
  }
}

@keyframes conn-pulse-warn {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

.header-bar__conn-label {
  max-width: 7rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-bar__notif-wrap {
  position: relative;
}

.header-bar__icon-btn {
  position: relative;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elevated) 75%, transparent);
  color: var(--text-primary);
  cursor: pointer;
  transition:
    border-color var(--transition),
    background var(--transition),
    color var(--transition),
    box-shadow var(--transition),
    transform 0.15s ease;
}

.header-bar__icon-btn:hover {
  border-color: var(--border-strong);
  background: var(--bg-subtle);
  box-shadow: 0 0 14px color-mix(in srgb, var(--accent-glow) 22%, transparent);
}

.header-bar__icon-btn:active {
  transform: scale(0.96);
}

.header-bar__icon-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.header-bar__badge {
  position: absolute;
  top: 5px;
  right: 5px;
  min-width: 1.1rem;
  height: 1.1rem;
  padding: 0 0.28rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #dc2626, var(--red-500));
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  line-height: 1.1rem;
  text-align: center;
  box-shadow: 0 0 8px color-mix(in srgb, var(--red-500) 55%, transparent);
  transition: opacity var(--transition), transform var(--transition);
}

.header-bar__badge.is-zero {
  opacity: 0;
  transform: scale(0.5);
  pointer-events: none;
}

.header-bar__notif-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: min(320px, calc(100vw - 2rem));
  padding: 0.65rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg), 0 0 24px color-mix(in srgb, var(--accent-glow) 18%, transparent);
  z-index: 260;
}

.header-bar__notif-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.85rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.header-bar__notif-clear {
  border: none;
  background: none;
  color: var(--accent);
  font: inherit;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  cursor: pointer;
  padding: 0.2rem 0.35rem;
  border-radius: 8px;
  transition: background var(--transition);
}

.header-bar__notif-clear:hover {
  background: var(--accent-soft);
}

.header-bar__notif-list {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0.65rem 0;
  max-height: 220px;
  overflow-y: auto;
}

.header-bar__notif-list li {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  padding: 0.5rem 0.25rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}

.header-bar__notif-list li:last-child {
  border-bottom: none;
}

.header-bar__notif-empty {
  color: var(--text-muted);
  font-style: italic;
}

.header-bar__notif-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-top: 0.35rem;
  flex-shrink: 0;
}

.header-bar__notif-dot--ok {
  background: var(--green-500);
  box-shadow: 0 0 6px var(--green-400);
}

.header-bar__notif-dot--warn {
  background: var(--amber-600);
}

.header-bar__clock {
  display: inline-flex;
  align-items: center;
  min-width: 5.5rem;
  justify-content: center;
  padding: 0.35rem 0.55rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-subtle) 50%, transparent);
  font-size: 0.8125rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header-bar__clock:hover {
  border-color: var(--border-strong);
}

.theme-toggle {
  position: relative;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elevated) 75%, transparent);
  color: var(--accent);
  cursor: pointer;
  box-shadow: none;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    box-shadow var(--transition),
    transform 0.15s ease;
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  background: var(--bg-subtle);
  box-shadow: 0 0 14px color-mix(in srgb, var(--accent-glow) 22%, transparent);
}

.theme-toggle:active {
  transform: scale(0.96);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle__icon {
  grid-area: 1 / 1;
  display: grid;
  place-items: center;
  opacity: 0;
  transform: scale(0.88);
  transition:
    opacity var(--transition),
    transform var(--transition);
}

[data-theme="light"] .theme-toggle__icon--sun,
:root:not([data-theme]) .theme-toggle__icon--sun {
  opacity: 1;
  transform: scale(1);
}

[data-theme="dark"] .theme-toggle__icon--moon {
  opacity: 1;
  transform: scale(1);
}

[data-theme="dark"] .theme-toggle {
  background: color-mix(in srgb, #111916 88%, transparent);
}

.header-bar__device {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  padding: 0.4rem 0.65rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elevated) 80%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--accent) 8%, transparent);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header-bar__device:hover {
  border-color: var(--border-strong);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--accent) 12%, transparent),
    0 0 12px color-mix(in srgb, var(--accent-glow) 15%, transparent);
}

.header-bar__device-label {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.header-bar__device-id {
  font-size: 0.8125rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.nav-target-section {
  scroll-margin-top: 96px;
  margin-top: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
  padding: clamp(1rem, 2.5vw, 1.35rem);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-sm);
}

.nav-target-section__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.nav-target-section__text {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.5;
  max-width: 62ch;
}

.about-stack {
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2.5vw, 1.35rem);
}

.about-prose {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.about-prose p {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.55;
  max-width: 68ch;
  margin: 0;
}

.about-list {
  margin: 0;
  padding: 0 0 0 1.15rem;
  max-width: 68ch;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.55;
}

.about-list li {
  margin-bottom: 0.45rem;
  padding-left: 0.35rem;
}

.about-list li::marker {
  color: var(--accent);
}

.about-tech-note {
  margin: 0.85rem 0 0;
  max-width: 68ch;
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.55;
  padding-top: 0.35rem;
  border-top: 1px solid var(--border);
}

#alerts,
#live-data,
#analytics,
#history,
#about,
#top {
  scroll-margin-top: 96px;
}

[data-tooltip] {
  position: relative;
}

[data-tooltip]:not(.header-bar__clock):hover::after,
[data-tooltip]:not(.header-bar__clock):focus-visible::after {
  content: attr(data-tooltip);
  position: absolute;
  z-index: 300;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%);
  padding: 0.28rem 0.45rem;
  border-radius: 8px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--text-primary);
  background: color-mix(in srgb, var(--bg-elevated) 95%, transparent);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  pointer-events: none;
  opacity: 0;
  animation: tooltip-in 0.18s ease forwards;
}

.header-bar__clock[data-tooltip]:hover::after,
.header-bar__clock[data-tooltip]:focus-visible::after {
  content: attr(data-tooltip);
  position: absolute;
  z-index: 300;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%);
  padding: 0.28rem 0.45rem;
  border-radius: 8px;
  font-size: 0.65rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-primary);
  background: color-mix(in srgb, var(--bg-elevated) 95%, transparent);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  pointer-events: none;
  opacity: 0;
  animation: tooltip-in 0.18s ease forwards;
}

@keyframes tooltip-in {
  to {
    opacity: 1;
  }
}

@media (max-width: 1099px) {
  .header-bar__menu-btn {
    display: inline-flex;
  }

  .header-bar__nav {
    display: none;
    width: 100%;
    padding: 0.35rem 0 0.15rem;
  }

  .header-bar.is-menu-open .header-bar__nav {
    display: block;
  }

  .header-bar__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }

  .header-bar__nav-link {
    justify-content: center;
    width: 100%;
  }

  .header-bar__controls {
    justify-content: flex-start;
  }
}

@media (max-width: 520px) {
  .header-bar__conn-label {
    max-width: 4.5rem;
  }

  .header-bar__device {
    width: 100%;
    justify-content: center;
  }
}

.alert-section {
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.main-alert {
  position: relative;
  overflow: hidden;
  background: var(--bg-elevated);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  padding-left: calc(clamp(1.25rem, 3vw, 1.75rem) + 6px);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  border-left: 6px solid var(--accent);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.main-alert::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, var(--accent-soft), transparent 55%);
  pointer-events: none;
}

.main-alert h2,
.main-alert p {
  position: relative;
}

.main-alert h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}

.main-alert p {
  font-size: 1.05rem;
  color: var(--text-muted);
  font-weight: 500;
}

.connection-status {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.connection-status.ok {
  color: var(--green-600);
}

.connection-status.warn {
  color: var(--amber-600);
}

.connection-status.error {
  color: var(--red-500);
}

[data-theme="dark"] .connection-status.ok {
  color: var(--green-400);
}

.safe-alert {
  border-left-color: var(--green-600);
}

[data-theme="dark"] .safe-alert {
  border-left-color: var(--green-400);
}

.low-alert {
  border-left-color: var(--amber-600);
}

.medium-alert {
  border-left-color: var(--orange-500);
}

.high-alert {
  border-left-color: var(--red-500);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}

.card {
  position: relative;
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color var(--transition), background var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

.card h3 {
  color: var(--text-muted);
  margin-bottom: 0.65rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.value {
  font-size: clamp(1.5rem, 4vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.value-text {
  font-size: 1.2rem;
  font-weight: 700;
}

.value-number {
  font-size: clamp(1.35rem, 3.5vw, 1.65rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.value-small {
  font-size: 0.95rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.safe {
  color: var(--green-600);
}

[data-theme="dark"] .safe {
  color: var(--green-400);
}

.low {
  color: var(--amber-600);
}

.medium {
  color: var(--orange-500);
}

.high {
  color: var(--red-500);
}

.history-section,
.chart-section,
.analytics-section {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  padding: clamp(1.15rem, 3vw, 1.5rem);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition);
}

.chart-section,
.analytics-section,
.history-section {
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
}

.analytics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1rem 1.25rem;
  margin-top: 0.35rem;
}

.analytics-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-subtle) 55%, var(--bg-elevated));
  padding: 1rem 1rem 0.85rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.analytics-card:hover {
  border-color: color-mix(in srgb, var(--border-strong) 80%, transparent);
  box-shadow: 0 0 20px color-mix(in srgb, var(--accent-glow) 12%, transparent);
}

.analytics-card--wide {
  grid-column: 1 / -1;
}

.analytics-card__title {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.2rem;
  color: var(--text-primary);
}

.analytics-card__hint {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  margin: 0 0 0.65rem;
  line-height: 1.4;
}

.chart-panel--compact {
  min-height: 200px;
  height: clamp(200px, 28vh, 280px);
}

.chart-panel--bar {
  min-height: 240px;
  height: clamp(240px, 32vh, 320px);
}

.chart-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  margin: -0.25rem 0 1rem;
  max-width: 52ch;
  line-height: 1.45;
}

.chart-subtitle a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.chart-subtitle a:hover {
  text-decoration: underline;
}

.chart-panel {
  position: relative;
  width: 100%;
  min-height: 220px;
  height: clamp(220px, 32vh, 320px);
}

.chart-panel--vibration {
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-md) + 2px);
  padding: 0.75rem;
  background:
    radial-gradient(120% 80% at 10% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent),
    radial-gradient(120% 90% at 100% 100%, color-mix(in srgb, var(--accent-2) 12%, transparent), transparent),
    var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.chart-panel--vibration:hover {
  box-shadow: var(--shadow-md);
}

.section-header {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-header h2 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-header::before {
  content: "";
  width: 4px;
  height: 1.25rem;
  border-radius: 4px;
  background: var(--accent);
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.875rem;
}

thead {
  background: var(--bg-table-head);
  transition: background var(--transition);
}

th,
td {
  padding: 0.85rem 0.75rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  transition: border-color var(--transition);
}

th {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover td {
  background: var(--accent-soft);
}

.badge {
  display: inline-block;
  min-width: 5.5rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  color: #fff;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.badge-safe {
  background: linear-gradient(135deg, var(--green-600), var(--green-700));
}

.badge-low {
  background: linear-gradient(135deg, #ca8a04, var(--amber-600));
}

.badge-medium {
  background: linear-gradient(135deg, #ea580c, var(--orange-500));
}

.badge-high {
  background: linear-gradient(135deg, #dc2626, var(--red-500));
}

@media (max-width: 768px) {
  .header-brand {
    flex: 1 1 100%;
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }
}

/* Desktop breakpoints: small desktop, standard desktop, wide desktop */
@media (min-width: 1100px) and (max-width: 1279px) {
  .container,
  .header-bar__surface {
    max-width: 1120px;
  }

  .cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 1280px) and (max-width: 1535px) {
  .container,
  .header-bar__surface {
    max-width: 1280px;
  }

  .cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .chart-panel {
    height: clamp(250px, 33vh, 360px);
  }
}

@media (min-width: 1536px) {
  .container,
  .header-bar__surface {
    max-width: 1440px;
  }

  .cards {
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 1.15rem;
  }

  .chart-panel {
    height: clamp(280px, 36vh, 420px);
  }

  .analytics-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.15rem 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}