:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --ink: #17202a;
  --muted: #687382;
  --line: #dce2ea;
  --panel: #ffffff;
  --accent: #1f7a8c;
  --accent-dark: #155e6d;
  --ok: #16824a;
  --bad: #9d2a2a;
  --warn: #a66a00;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(31, 122, 140, 0.08), transparent 14rem),
    var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  border-radius: 0.5rem;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 700;
  padding: 0.72rem 1rem;
  transition: transform 160ms ease, background 160ms ease, opacity 160ms ease;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
  font-weight: 700;
  padding: 0.72rem 1rem;
}

button:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

.login-view {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 24rem;
  gap: 4rem;
  min-height: 100vh;
  align-items: center;
  padding: 8vw;
}

.brand span,
.eyebrow {
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.brand h1 {
  margin: 0.5rem 0;
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 1;
}

.brand p {
  max-width: 34rem;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.8;
}

.login-panel {
  display: grid;
  gap: 1rem;
  padding: 2rem;
  background: rgba(255, 253, 247, 0.86);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  backdrop-filter: blur(18px);
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: white;
  color: var(--ink);
  outline: none;
  padding: 0.8rem 0.95rem;
}

input:focus {
  border-color: var(--accent);
}

.error {
  min-height: 1.2rem;
  margin: 0;
  color: var(--bad);
}

.app-view {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100vh;
  min-height: 0;
  overflow: hidden;
  padding: 1rem;
}

.topbar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  min-height: 3.75rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.86);
  padding: 0.65rem 0.75rem 0.65rem 1rem;
  backdrop-filter: blur(16px);
}

.topbar-brand {
  display: grid;
  gap: 0.1rem;
}

.topbar-brand strong {
  white-space: nowrap;
  font-size: 1rem;
}

.topbar-brand span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 0.35rem;
}

.nav a {
  border-radius: 999px;
  color: var(--muted);
  font-weight: 800;
  padding: 0.55rem 0.9rem;
}

.nav a:hover,
.nav a.active {
  background: rgba(31, 122, 140, 0.1);
  color: var(--accent-dark);
}

.actions {
  display: flex;
  gap: 0.5rem;
}

.ghost {
  border: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.65);
  color: var(--ink);
}

.ghost:hover {
  background: white;
}

.page-content {
  min-height: 0;
  overflow: hidden;
  padding-top: 1rem;
}

.overview-page {
  height: 100%;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.page-head h1 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
}

.page-head p,
.muted {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.padded {
  padding: 1rem 0;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.summary-card {
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--panel);
  padding: 1rem;
}

.summary-card span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.summary-card strong {
  display: block;
  margin-top: 0.25rem;
  font-size: 1.8rem;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 0.85rem;
}

.device-card {
  display: grid;
  gap: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  padding: 1rem;
  text-align: left;
}

.device-card:hover {
  background: white;
}

.device-card h3 {
  margin: 0.45rem 0 0.15rem;
  font-size: 1.15rem;
}

.device-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  word-break: break-all;
}

.device-card dl {
  display: grid;
  gap: 0.55rem;
  margin: 0;
}

.device-card dl div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.device-card dt {
  color: var(--muted);
}

.device-card dd {
  margin: 0;
  font-weight: 800;
  text-align: right;
}

.overview-firmware {
  display: grid;
  gap: 0.55rem;
  border-top: 1px solid var(--line);
  padding-top: 0.85rem;
}

.overview-firmware div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.overview-firmware span {
  color: var(--muted);
}

.overview-firmware strong {
  text-align: right;
  word-break: break-word;
}

.firmware-status {
  display: inline-flex;
  justify-content: flex-end;
  border-radius: 999px;
  padding: 0.18rem 0.5rem;
  font-size: 0.78rem;
  font-weight: 900;
}

.firmware-status.ok {
  background: rgba(22, 130, 74, 0.1);
  color: var(--ok);
}

.firmware-status.warn {
  background: rgba(180, 83, 9, 0.12);
  color: #9a3412;
}

.firmware-status.bad {
  background: rgba(157, 42, 42, 0.1);
  color: var(--bad);
}

.firmware-status.neutral {
  background: rgba(100, 116, 139, 0.12);
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  height: 100%;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.58);
}

.device-list {
  min-height: 0;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  padding: 1rem;
}

.list-header,
.device-row,
.meta-row,
.function-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.list-header {
  position: sticky;
  top: 0;
  z-index: 1;
  background: rgba(246, 247, 249, 0.94);
  color: var(--muted);
  margin-bottom: 0.65rem;
  padding: 0.25rem 0;
  backdrop-filter: blur(10px);
}

.device-rows {
  display: grid;
  gap: 0.35rem;
}

.device-row {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 0.65rem;
  color: var(--ink);
  background: transparent;
  padding: 0.85rem;
  text-align: left;
}

.device-row:hover,
.device-row.active {
  background: var(--panel);
}

.device-row.active {
  border-color: rgba(31, 122, 140, 0.38);
  background:
    linear-gradient(90deg, rgba(31, 122, 140, 0.14), rgba(255, 255, 255, 0.95) 42%),
    var(--panel);
  box-shadow: inset 0.25rem 0 0 var(--accent), 0 0.55rem 1.2rem rgba(15, 23, 42, 0.06);
}

.device-row.active strong {
  color: var(--accent-dark);
}

.device-row.active small {
  color: #475569;
}

.device-row.active .status {
  width: 0.82rem;
  height: 0.82rem;
  box-shadow: 0 0 0 0.28rem rgba(157, 42, 42, 0.12);
}

.device-row.active .status.online {
  box-shadow: 0 0 0 0.28rem rgba(22, 130, 74, 0.16);
}

.device-row strong {
  display: block;
}

.device-row small {
  color: var(--muted);
}

.status {
  flex: 0 0 auto;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--bad);
}

.status.online {
  background: var(--ok);
}

.detail {
  min-height: 0;
  overflow-y: auto;
  padding: 1rem 1.25rem;
}

.empty {
  display: grid;
  place-content: center;
  min-height: 50vh;
  color: var(--muted);
  text-align: center;
}

.empty.compact {
  min-height: 14rem;
}

.device-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.9rem;
}

.device-title h2 {
  margin: 0.35rem 0 0;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
}

.device-title-side {
  display: grid;
  justify-items: end;
  gap: 0.55rem;
}

.device-title-side > span {
  color: var(--muted);
  font-size: 0.82rem;
  word-break: break-all;
  text-align: right;
}

.danger-text {
  color: var(--bad);
}

.state-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: rgba(157, 42, 42, 0.1);
  color: var(--bad);
  font-size: 0.72rem;
  font-weight: 900;
  padding: 0.25rem 0.55rem;
}

.state-pill.online {
  background: rgba(22, 130, 74, 0.1);
  color: var(--ok);
}

.meta {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  margin: 1rem 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.meta-row {
  align-items: flex-start;
  background: rgba(255, 253, 247, 0.72);
  padding: 0.85rem;
}

.meta-row span {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
}

.meta-row strong {
  font-size: 0.92rem;
  word-break: break-word;
}

.functions {
  display: grid;
  gap: 0.45rem;
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.65rem;
}

.section-head h3 {
  margin: 0;
}

.function-row {
  border-bottom: 1px solid var(--line);
  padding: 0.85rem 0;
}

.function-row strong {
  display: block;
  font-size: 1.02rem;
}

.function-row small {
  color: var(--muted);
}

.function-row button {
  min-width: 6.5rem;
}

.function-row button.loading {
  background: var(--warn);
}

.function-row button.success {
  background: var(--ok);
}

.function-row button.danger {
  background: var(--bad);
}

.relay-sections {
  display: grid;
  gap: 0.85rem;
}

.relay-group {
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: rgba(255, 255, 255, 0.62);
  padding: 0.85rem;
}

.relay-group-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.relay-group-head strong {
  font-size: 1rem;
}

.relay-group-head span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.relay-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: 0.75rem;
}

.relay-card {
  display: grid;
  gap: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: rgba(255, 253, 247, 0.78);
  padding: 1rem;
}

.relay-card strong {
  display: block;
  font-size: 1.05rem;
}

.relay-card small {
  color: var(--muted);
}

.relay-state {
  justify-self: start;
  border-radius: 999px;
  background: rgba(157, 42, 42, 0.1);
  color: var(--bad);
  font-size: 0.8rem;
  font-weight: 900;
  padding: 0.28rem 0.65rem;
}

.relay-state.on {
  background: rgba(22, 130, 74, 0.1);
  color: var(--ok);
}

.relay-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.ota-panel {
  display: grid;
  gap: 0.75rem;
  border-top: 1px solid var(--line);
  margin-top: 1.25rem;
  padding-top: 1rem;
}

.ota-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
}

.ota-form input {
  min-width: 0;
}

.ota-progress {
  display: grid;
  gap: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: #f8fafc;
  padding: 0.75rem;
}

.ota-progress.active {
  border-color: rgba(37, 99, 235, 0.3);
  background: rgba(37, 99, 235, 0.06);
}

.ota-progress-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.ota-progress-head strong {
  color: var(--text);
}

.ota-progress-head span {
  color: var(--muted);
  font-weight: 800;
}

.progress-track {
  height: 0.5rem;
  overflow: hidden;
  border-radius: 999px;
  background: #e5e7eb;
}

.progress-track span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, #16a34a);
  transition: width 0.25s ease;
}

.firmware-upload {
  display: grid;
  grid-template-columns: 9rem 12rem minmax(12rem, 1fr) minmax(12rem, 1fr) auto auto;
  gap: 0.75rem;
  align-items: end;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--panel);
  padding: 1rem;
  margin-bottom: 1rem;
}

select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: white;
  color: var(--ink);
  outline: none;
  padding: 0.8rem 0.95rem;
}

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

.check-row input {
  width: auto;
}

.firmware-list {
  display: grid;
  gap: 0.85rem;
}

.firmware-group {
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: rgba(255, 255, 255, 0.62);
  padding: 0.85rem;
}

.firmware-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 0.75rem;
  align-items: center;
  border-top: 1px solid var(--line);
  padding: 0.85rem 0;
}

.firmware-row strong {
  display: block;
}

.firmware-row small {
  color: var(--muted);
  word-break: break-all;
}

.firmware-row p {
  margin: 0.2rem 0;
  color: var(--muted);
}

.log-list {
  display: grid;
  gap: 0.75rem;
}

.log-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0.75rem 0 1rem;
}

.log-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.filter-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-size: 0.86rem;
  padding: 0.45rem 0.75rem;
}

.filter-chip:hover,
.filter-chip.active {
  border-color: rgba(31, 122, 140, 0.35);
  background: rgba(31, 122, 140, 0.1);
  color: var(--accent-dark);
  transform: none;
}

.pager {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.88rem;
  white-space: nowrap;
}

.pager button {
  padding: 0.45rem 0.7rem;
}

.log-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 253, 247, 0.78);
  padding: 0.95rem;
}

.log-dot {
  width: 0.75rem;
  height: 0.75rem;
  margin-top: 0.32rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0.3rem rgba(31, 122, 140, 0.12);
}

.log-row.ok .log-dot {
  background: var(--ok);
  box-shadow: 0 0 0 0.3rem rgba(22, 130, 74, 0.12);
}

.log-row.warn .log-dot {
  background: var(--warn);
  box-shadow: 0 0 0 0.3rem rgba(166, 106, 0, 0.14);
}

.log-row.bad .log-dot {
  background: var(--bad);
  box-shadow: 0 0 0 0.3rem rgba(157, 42, 42, 0.12);
}

.log-content {
  min-width: 0;
}

.log-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.log-title strong {
  font-size: 1rem;
}

.log-row small {
  display: block;
  color: var(--muted);
  margin-top: 0.35rem;
}

.log-row p {
  margin: 0.35rem 0 0;
  color: var(--ink);
  line-height: 1.6;
}

.log-badge {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.78);
  font-size: 0.76rem;
  font-weight: 800;
  padding: 0.22rem 0.55rem;
}

@media (max-width: 860px) {
  .login-view,
  .topbar,
  .workspace,
  .meta,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .login-view {
    gap: 2rem;
    padding: 2rem;
  }

  .app-view {
    height: auto;
    min-height: 100vh;
    overflow: visible;
    padding: 0.75rem;
  }

  .topbar {
    align-items: stretch;
  }

  .nav {
    justify-content: flex-start;
    overflow-x: auto;
  }

  .page-content,
  .overview-page,
  .workspace,
  .device-list,
  .detail {
    height: auto;
    overflow: visible;
  }

  .device-list {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .device-title {
    flex-direction: column;
  }

  .device-title > span {
    text-align: left;
  }

  .log-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .pager {
    justify-content: space-between;
    white-space: normal;
  }
}