:root {
  color-scheme: dark;
  --bg: #09110f;
  --bg-glow: rgba(71, 209, 140, 0.2);
  --bg-start: #07100d;
  --bg-mid: #0d1e19;
  --bg-end: #151607;
  --panel: rgba(17, 31, 27, 0.86);
  --panel-strong: #14251f;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(0, 0, 0, 0.18);
  --control: rgba(255, 255, 255, 0.06);
  --field: rgba(0, 0, 0, 0.2);
  --line: rgba(190, 221, 204, 0.18);
  --text: #eef8f2;
  --muted: #9bb4a8;
  --accent: #47d18c;
  --accent-rgb: 71, 209, 140;
  --accent-2: #ffd166;
  --accent-contrast: #07100d;
  --danger: #ff6b6b;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

:root[data-theme="night"] {
  --bg: #090d16;
  --bg-glow: rgba(103, 169, 255, 0.18);
  --bg-start: #070a12;
  --bg-mid: #111b2c;
  --bg-end: #15101f;
  --panel: rgba(16, 24, 39, 0.9);
  --panel-strong: #172033;
  --surface: rgba(255, 255, 255, 0.052);
  --surface-strong: rgba(0, 0, 0, 0.22);
  --control: rgba(255, 255, 255, 0.065);
  --field: rgba(0, 0, 0, 0.24);
  --line: rgba(184, 205, 238, 0.2);
  --text: #edf5ff;
  --muted: #9daec9;
  --accent: #67a9ff;
  --accent-rgb: 103, 169, 255;
  --accent-2: #f8c86b;
  --accent-contrast: #06101f;
}

:root[data-theme="aurora"] {
  --bg: #071113;
  --bg-glow: rgba(54, 214, 183, 0.18);
  --bg-start: #041112;
  --bg-mid: #102326;
  --bg-end: #1b1726;
  --panel: rgba(12, 32, 35, 0.88);
  --panel-strong: #143036;
  --surface: rgba(255, 255, 255, 0.052);
  --surface-strong: rgba(0, 0, 0, 0.2);
  --control: rgba(255, 255, 255, 0.065);
  --field: rgba(0, 0, 0, 0.23);
  --line: rgba(172, 240, 230, 0.2);
  --text: #edfdf9;
  --muted: #99bbb5;
  --accent: #36d6b7;
  --accent-rgb: 54, 214, 183;
  --accent-2: #ffcf70;
  --accent-contrast: #031210;
}

:root[data-theme="contrast"] {
  --bg: #050505;
  --bg-glow: rgba(255, 216, 76, 0.16);
  --bg-start: #050505;
  --bg-mid: #151515;
  --bg-end: #090909;
  --panel: rgba(20, 20, 20, 0.92);
  --panel-strong: #1d1d1d;
  --surface: rgba(255, 255, 255, 0.07);
  --surface-strong: rgba(0, 0, 0, 0.3);
  --control: rgba(255, 255, 255, 0.08);
  --field: rgba(0, 0, 0, 0.36);
  --line: rgba(255, 255, 255, 0.26);
  --text: #ffffff;
  --muted: #c4c4c4;
  --accent: #ffd84c;
  --accent-rgb: 255, 216, 76;
  --accent-2: #71e5ff;
  --accent-contrast: #090909;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Aptos", "Segoe UI", sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 18% 18%, var(--bg-glow), transparent 24rem),
    linear-gradient(135deg, var(--bg-start) 0%, var(--bg-mid) 52%, var(--bg-end) 100%);
}

button {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.55rem 0.8rem;
  color: var(--text);
  background: var(--control);
  cursor: pointer;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.78rem 0.85rem;
  color: var(--text);
  background: var(--field);
  font: inherit;
}

a {
  color: inherit;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.top-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.logout-form {
  margin: 0;
}

.logout-form button {
  min-height: 100%;
  border-radius: 999px;
  padding: 0.72rem 0.95rem;
}

.auth-shell {
  display: grid;
  place-items: center;
  min-height: 100vh;
}

.auth-panel {
  width: min(440px, 100%);
}

.auth-panel h1 {
  margin-bottom: 22px;
  font-size: clamp(2.2rem, 9vw, 4rem);
}

.auth-error {
  margin: 0;
  color: var(--danger);
}

.auth-back {
  display: inline-block;
  margin-top: 14px;
}

.nav-link {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.72rem 0.95rem;
  color: var(--muted);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--text);
  border-color: rgba(71, 209, 140, 0.45);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: clamp(1.9rem, 4.2vw, 4.2rem);
  line-height: 1;
}

.status-pill {
  min-width: 168px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.75rem 1rem;
  text-align: center;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.06);
}

.status-pill.online {
  color: #07100d;
  border-color: transparent;
  background: var(--accent);
}

.status-pill.offline {
  color: #fff;
  border-color: transparent;
  background: var(--danger);
}

.hero-grid,
.content-grid,
.mheard-grid,
.admin-grid,
.config-page-grid,
.status-section {
  display: grid;
  gap: 18px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.8fr);
  margin-bottom: 18px;
}

.content-grid {
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.75fr);
}

.status-section {
  margin-bottom: 18px;
}

.status-overview {
  display: grid;
  grid-template-columns: minmax(260px, 0.82fr) minmax(0, 1.6fr);
  gap: 18px;
  align-items: stretch;
  margin-bottom: 18px;
}

.mheard-grid,
.admin-grid,
.config-page-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-overview,
.admin-history-grid {
  display: grid;
  gap: 18px;
  margin-bottom: 18px;
}

.admin-overview {
  grid-template-columns: minmax(220px, 0.78fr) minmax(260px, 1fr) minmax(320px, 1.18fr);
  align-items: stretch;
}

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

.config-summary {
  margin-bottom: 18px;
}

.identity-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  gap: 12px;
}

.status-overview .identity-panel {
  grid-template-columns: 1fr;
}

.identity-panel div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--surface);
}

.identity-panel span,
.config-form span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.78rem;
}

.identity-panel strong {
  display: block;
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: clamp(0.86rem, 1.35vw, 1.08rem);
  line-height: 1.18;
}

.identity-panel div:first-child strong {
  white-space: nowrap;
}

.admin-grid {
  margin-bottom: 18px;
}

.admin-grid + .admin-grid {
  margin-top: 18px;
}

.admin-content {
  grid-template-columns: 1fr;
}

.panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

.panel-heading strong {
  color: var(--accent-2);
  font-weight: 700;
}

.relay-state {
  display: grid;
  grid-template-columns: clamp(160px, 21vw, 220px) minmax(0, 1fr);
  align-items: center;
  gap: clamp(18px, 3vw, 30px);
}

.signal-orb {
  display: grid;
  place-items: center;
  width: min(220px, 100%);
  aspect-ratio: 1;
  border: 1px solid rgba(var(--accent-rgb), 0.35);
  border-radius: 50%;
  color: var(--muted);
  background:
    radial-gradient(circle, rgba(var(--accent-rgb), 0.2), transparent 58%),
    var(--surface);
}

.signal-orb.active {
  color: var(--accent-contrast);
  border-color: transparent;
  background: radial-gradient(circle, #ffffff 0 11%, var(--accent) 12% 44%, rgba(var(--accent-rgb), 0.2) 45%);
  animation: pulse 1.8s ease-in-out infinite;
}

.signal-orb span {
  font-size: 2rem;
  font-weight: 800;
}

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

.live-panel .status-grid div:first-child,
.live-panel .status-grid div:nth-child(3) {
  grid-column: span 2;
}

.status-grid div,
.metric {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--surface);
}

dt,
.metric span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.78rem;
}

dd,
.metric strong {
  display: block;
  margin: 0;
  overflow-wrap: anywhere;
  font-size: clamp(0.92rem, 1.45vw, 1.12rem);
  line-height: 1.18;
}

.metrics-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  gap: 12px;
}

.metrics-panel .panel-heading,
.metrics-panel .compact-metric {
  grid-column: 1 / -1;
}

.message-list,
.topic-list,
.heard-list {
  display: grid;
  gap: 10px;
  max-height: 520px;
  overflow: auto;
}

.mheard-grid .heard-list {
  max-height: 600px;
}

.admin-card-topics .topic-list,
.admin-card-gateway .compact-list {
  max-height: 236px;
}

.admin-card-system {
  grid-column: 1 / -1;
}

.config-source-panel {
  grid-column: 1 / -1;
}

.config-source-panel .settings-list,
.admin-card-system .settings-list {
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
}

.config-source-panel dd span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
}

.message,
.topic-row,
.heard-row,
.settings-list div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: var(--surface-strong);
}

.message header,
.topic-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.heard-row {
  display: grid;
  gap: 12px;
}

.heard-row strong {
  display: block;
  font-size: 1.35rem;
}

.heard-row span {
  color: var(--muted);
  font-size: 0.88rem;
}

.heard-row dl {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7.4rem, 1fr));
  gap: 8px;
  margin: 0;
}

.heard-row dl div {
  min-width: 0;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}

.heard-row dd {
  font-size: 1rem;
  overflow-wrap: anywhere;
}

.heard-row dl strong {
  font-size: 1rem;
}

.mheard-row {
  grid-template-columns: 1fr;
  gap: 0;
}

.mheard-row > div:first-child,
.mheard-row dl,
.mheard-row dl div,
.mheard-row dd,
.mheard-row span {
  min-width: 0;
}

.mheard-row > div:first-child span,
.mheard-row dd,
.mheard-row strong {
  overflow: visible;
  white-space: nowrap;
}

.mheard-row > div:first-child span {
  display: block;
}

.mheard-row dl {
  display: flex;
  align-items: start;
  gap: 6px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  white-space: nowrap;
}

.mheard-row dl::-webkit-scrollbar {
  display: none;
}

.mheard-row dl div {
  flex: 1 0 max-content;
  min-width: max-content;
}

.mheard-row dl div {
  border-top: 0;
  padding-top: 0;
}

.mheard-row dt {
  margin-bottom: 3px;
  font-size: 0.68rem;
}

.mheard-row dd,
.mheard-row dl strong {
  font-size: 0.82rem;
}

.compact-history {
  max-height: 280px;
}

.compact-row {
  gap: 8px;
  padding: 10px;
}

.compact-row strong {
  font-size: 1rem;
}

.compact-row dl {
  grid-template-columns: repeat(auto-fit, minmax(5.8rem, 1fr));
}

.compact-list {
  max-height: 232px;
  overflow: auto;
}

.topic-health-row span {
  overflow-wrap: anywhere;
  white-space: normal;
  text-align: right;
}

.admin-card-mqtt .metric strong,
.topic-health-row code {
  font-size: 0.9rem;
}

.settings-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.config-form {
  display: grid;
  gap: 14px;
}

.message code {
  color: var(--accent);
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}

.message time,
.topic-row span {
  color: var(--muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.message pre {
  margin: 10px 0 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: #d8e8df;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.85rem;
}

.empty {
  color: var(--muted);
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.035); }
}

@media (max-width: 860px) {
  .topbar,
  .relay-state,
  .hero-grid,
  .content-grid,
  .mheard-grid,
  .admin-grid,
  .admin-overview,
  .admin-history-grid,
  .status-overview,
  .config-page-grid,
  .identity-panel {
    grid-template-columns: 1fr;
  }

  .topbar {
    display: grid;
  }

  .signal-orb {
    width: min(220px, 100%);
    justify-self: center;
  }

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

  .live-panel .status-grid div:first-child,
  .live-panel .status-grid div:nth-child(3) {
    grid-column: span 1;
  }

  .identity-panel div:first-child strong {
    white-space: normal;
  }

  .top-actions {
    justify-content: flex-start;
  }

  .heard-row dl {
    grid-template-columns: 1fr;
  }

  .mheard-row {
    grid-template-columns: 1fr;
  }

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

@media (min-width: 861px) and (max-width: 1120px) {
  .admin-overview {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .admin-card-topics {
    grid-column: 1 / -1;
  }
}

@media (min-width: 861px) and (max-width: 1040px) {
  .status-overview {
    grid-template-columns: 1fr;
  }

  .status-overview .identity-panel {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .live-panel .status-grid div:first-child,
  .live-panel .status-grid div:nth-child(3) {
    grid-column: span 1;
  }
}

@media (max-width: 560px) {
  .shell {
    width: min(100% - 20px, 1180px);
    padding: 20px 0;
  }

  .panel {
    padding: 14px;
  }

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

  .metrics-panel .compact-metric {
    grid-column: auto;
  }

  .message header,
  .topic-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .topic-health-row span {
    text-align: left;
  }

  .mheard-row {
    grid-template-columns: 1fr;
  }

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