:root {
  --bg: #0b1220;
  --bg-soft: #111827;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.1);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --primary: #3b82f6;
  --primary-soft: rgba(59, 130, 246, 0.16);
  --ok: #22c55e;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, #0b1220 0%, #111827 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  min-height: 100vh;
}

button,
a {
  font: inherit;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: env(safe-area-inset-bottom);
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: calc(18px + env(safe-area-inset-top)) 20px 18px;
}

.eyebrow {
  font-size: 0.82rem;
  color: #93c5fd;
  margin-bottom: 6px;
}

.topbar h1 {
  margin: 0;
  font-size: 1.8rem;
  line-height: 1.2;
}

.status-pill {
  white-space: nowrap;
  background: var(--primary-soft);
  color: #bfdbfe;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.88rem;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.main-content {
  flex: 1;
  padding: 0 20px 24px;
}

.hero-card,
.feature-card,
.status-list,
.install-help {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 20px;
  margin-bottom: 22px;
}

.hero-card h2 {
  margin: 0 0 10px;
  font-size: 1.3rem;
}

.hero-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 14px;
  text-decoration: none;
  cursor: pointer;
  border: none;
}

.primary-btn {
  background: var(--primary);
  color: white;
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.section {
  margin-bottom: 22px;
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.section-title-row h3 {
  margin: 0;
  font-size: 1.05rem;
}

.section-tag {
  font-size: 0.8rem;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.section-tag.ok {
  color: #bbf7d0;
  background: rgba(34, 197, 94, 0.14);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.feature-card {
  display: flex;
  gap: 14px;
  padding: 16px;
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.feature-card h4 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.94rem;
}

.status-list {
  overflow: hidden;
}

.status-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.status-item:last-child {
  border-bottom: none;
}

.status-item span {
  color: var(--muted);
}

.install-help {
  padding: 18px 20px;
}

.install-steps {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.hidden {
  display: none;
}

.bottom-nav {
  position: sticky;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 8px calc(10px + env(safe-area-inset-bottom));
}

.nav-item {
  background: transparent;
  color: var(--muted);
  border: none;
  padding: 8px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: default;
}

.nav-item.active {
  color: white;
}

@media (min-width: 768px) {
  .main-content {
    max-width: 760px;
    width: 100%;
    margin: 0 auto;
  }

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