@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700;800&display=swap');

:root {
  --bg: #020617;
  --bg-2: #0f172a;
  --card: rgba(15, 23, 42, 0.72);
  --card-border: rgba(255, 255, 255, 0.08);
  --accent: #38bdf8;
  --accent-2: #0ea5e9;
  --text: #f8fafc;
  --muted: #94a3b8;
  --success: #10b981;
  --shadow: 0 30px 80px rgba(2, 8, 23, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.08), transparent 24%),
    linear-gradient(180deg, #020617 0%, #0b1120 100%);
  color: var(--text);
  padding: 48px 18px 72px;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo span {
  color: var(--accent);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(16, 185, 129, 0.12);
  color: #d1fae5;
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 0.95rem;
  font-weight: 700;
}

.card {
  background: var(--card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  padding: 30px;
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  margin-bottom: 26px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.hero-copy p,
.muted {
  color: var(--muted);
}

.hero-copy p {
  margin: 0;
  max-width: 640px;
  font-size: 1rem;
  line-height: 1.7;
}

.hero-stats {
  display: grid;
  gap: 16px;
  align-content: center;
}

.stat-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 22px;
  padding: 22px;
}

.stat-label {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
}

.stat-value.small {
  font-size: 1.15rem;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

h2 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.refresh-btn {
  border: 1px solid rgba(56, 189, 248, 0.26);
  background: rgba(56, 189, 248, 0.1);
  color: var(--text);
  border-radius: 14px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

.refresh-btn:hover {
  transform: translateY(-1px);
  background: rgba(56, 189, 248, 0.16);
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.device-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 4px solid var(--accent);
  border-radius: 22px;
  padding: 22px;
}

.device-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.device-card h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

.serial {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--muted);
  font-size: 0.92rem;
  word-break: break-all;
}

.connected-pill {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--success);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.empty-state,
.error-state {
  grid-column: 1 / -1;
  text-align: center;
  border-radius: 22px;
  padding: 42px 20px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.12);
}

.error-state {
  color: #fecaca;
  border-color: rgba(239, 68, 68, 0.25);
  background: rgba(127, 29, 29, 0.16);
}

@media (max-width: 860px) {
  .hero-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    padding: 24px 14px 48px;
  }

  .card {
    padding: 22px;
    border-radius: 22px;
  }

  .logo {
    font-size: 1.45rem;
  }
}