:root {
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: #07111f;
  color: #e5eefb;
  --bg: #07111f;
  --panel: rgba(13, 25, 44, 0.92);
  --panel-strong: #10233d;
  --border: rgba(148, 163, 184, 0.18);
  --muted: #94a3b8;
  --text: #e5eefb;
  --accent: #2dd4bf;
  --accent-strong: #14b8a6;
  --warning: #f59e0b;
  --danger: #fb7185;
  --ok: #22c55e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(45, 212, 191, 0.18), transparent 32rem),
    radial-gradient(circle at bottom right, rgba(59, 130, 246, 0.12), transparent 28rem),
    var(--bg);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

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

.app-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px;
  border-right: 1px solid var(--border);
  background: rgba(3, 7, 18, 0.76);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 32px;
}

.brand__mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), #3b82f6);
  color: #02111f;
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand small,
.connection-card small,
.panel p,
.hero p {
  color: var(--muted);
}

.nav {
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}

.nav a {
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: 14px;
  color: var(--text);
  text-decoration: none;
}

.nav a:hover,
.nav a:focus-visible {
  border-color: var(--border);
  background: rgba(148, 163, 184, 0.08);
  outline: none;
}

.connection-card {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--panel);
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 99px;
  background: var(--danger);
  box-shadow: 0 0 0 5px rgba(251, 113, 133, 0.12);
}

.status-dot.is-online {
  background: var(--ok);
  box-shadow: 0 0 0 5px rgba(34, 197, 94, 0.12);
}

.main {
  width: min(1180px, 100%);
  padding: 32px;
}

.hero,
.auth-card,
.panel,
.metric-card {
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  padding: 32px;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.hero p {
  max-width: 720px;
  margin-bottom: 0;
  font-size: 1.05rem;
}

.hero-actions,
.panel__header {
  display: flex;
  gap: 12px;
  align-items: center;
}

.hero-actions {
  flex-shrink: 0;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.primary-button,
.secondary-button,
.ghost-button {
  min-height: 42px;
  border-radius: 14px;
  padding: 0 16px;
  border: 1px solid transparent;
  color: #04111f;
  font-weight: 800;
}

.primary-button {
  background: var(--accent);
}

.secondary-button {
  background: #bfdbfe;
}

.ghost-button {
  color: var(--text);
  border-color: var(--border);
  background: transparent;
}

.auth-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 20px;
  padding: 24px;
}

.auth-card.is-hidden {
  display: none;
}

body:not(.is-authenticated) [data-auth-required] {
  display: none !important;
}

.is-auth-hidden {
  display: none !important;
}

.auth-form,
.device-form {
  display: grid;
  gap: 12px;
}

.auth-form--token {
  grid-column: 2;
}

label span {
  display: block;
  margin-bottom: 6px;
  color: #cbd5e1;
  font-size: 0.86rem;
  font-weight: 700;
}

input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
  background: rgba(15, 23, 42, 0.92);
  color: var(--text);
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.12);
}

.feedback {
  min-height: 24px;
  margin: 16px 4px;
  color: #cbd5e1;
}

.feedback.is-error {
  color: var(--danger);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.metric-card {
  padding: 20px;
}

.metric-card span {
  color: var(--muted);
}

.metric-card strong {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
}

.panel {
  margin-top: 20px;
  padding: 24px;
}

.panel__header {
  justify-content: space-between;
  margin-bottom: 16px;
}

.panel h2 {
  margin: 0;
}

.search-input {
  max-width: 340px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 9px;
  background: rgba(148, 163, 184, 0.16);
  color: #cbd5e1;
  font-size: 0.8rem;
  font-weight: 800;
}

.badge--online {
  background: rgba(34, 197, 94, 0.14);
  color: #86efac;
}

.badge--offline {
  background: rgba(251, 113, 133, 0.14);
  color: #fda4af;
}

.badge--unknown {
  background: rgba(245, 158, 11, 0.14);
  color: #fcd34d;
}

.position-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.position-card {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(15, 23, 42, 0.7);
}

.position-card strong,
.position-card small {
  display: block;
}

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

.position-card a {
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}

.device-form {
  grid-template-columns: 1fr 1fr auto;
  align-items: end;
}

.empty-state {
  padding: 20px;
  border: 1px dashed var(--border);
  border-radius: 18px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .hero,
  .auth-card,
  .panel__header,
  .device-form {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .auth-form--token {
    grid-column: auto;
  }

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

@media (max-width: 560px) {
  .main,
  .sidebar {
    padding: 18px;
  }

  .summary-grid {
    grid-template-columns: 1fr;
  }
}