:root {
  --bg: #050816;
  --bg-alt: #0f172a;
  --card-bg: #020617;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --text: #e5e7eb;
  --text-soft: #9ca3af;
  --border-subtle: rgba(148, 163, 184, 0.2);
  --radius-lg: 16px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.85);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #0b1120, #020617 55%, #000 100%);
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.app {
  width: 100%;
  max-width: 960px;
  margin: 24px;
  padding: 24px 20px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.98), rgba(8, 47, 73, 0.98));
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.18);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.app-header {
  text-align: center;
}

.logo {
  margin: 0 0 8px;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #f9fafb;
}

.tagline {
  margin: 0;
  font-size: 0.96rem;
  color: var(--text-soft);
}

.app-main {
  display: flex;
  justify-content: center;
}

.card {
  width: 100%;
  max-width: 520px;
  padding: 22px 20px 20px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, #0f172a, #020617 55%);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.8);
}

.card h2 {
  margin: 0 0 10px;
  font-size: 1.35rem;
}

.card p {
  margin: 0 0 16px;
  font-size: 0.96rem;
  color: var(--text-soft);
  line-height: 1.6;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.4rem;
  margin-bottom: 10px;
  border-radius: 999px;
  border: 1px solid rgba(56, 189, 248, 0.6);
  background: radial-gradient(circle at top left, #0ea5e9, #0369a1);
  color: #e5f4ff;
  font-weight: 600;
  font-size: 0.96rem;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.4);
  transition:
    transform 150ms ease,
    box-shadow 150ms ease,
    filter 150ms ease,
    background 150ms ease;
}

.primary-button:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 14px 40px rgba(56, 189, 248, 0.5);
}

.primary-button:active {
  transform: translateY(0);
  box-shadow: 0 8px 20px rgba(56, 189, 248, 0.35);
}

.status-text {
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.32);
  font-size: 0.86rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.status-text::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: #4ade80;
  box-shadow: 0 0 12px rgba(74, 222, 128, 0.9);
}

.status-text--highlight {
  background: var(--accent-soft);
  border-color: rgba(56, 189, 248, 0.7);
}

.app-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.2);
  padding-top: 14px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-soft);
}

@media (max-width: 600px) {
  .app {
    margin: 16px;
    padding: 18px 16px;
  }

  .card {
    padding: 18px 16px 16px;
  }
}