:root {
  --bg: #0f0f1a;
  --surface: #1a1a2e;
  --accent: #a78bfa;
  --accent2: #7c3aed;
  --text: #e2e8f0;
  --sub: #94a3b8;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── HEADER ── */
.header {
  width: 100%;
  padding: 1.25rem 2rem;
  background: var(--surface);
  border-bottom: 1px solid rgba(167, 139, 250, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo {
  height: 56px;
  width: auto;
  object-fit: contain;
}

/* ── HERO ── */
.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
  gap: 1.5rem;
  max-width: 640px;
}

.hero-title {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

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

.hero-sub {
  font-size: 1.15rem;
  color: var(--sub);
  line-height: 1.7;
  max-width: 480px;
}

/* ── BUTTON ── */
.btn {
  display: inline-block;
  padding: 0.85rem 2.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 999px;
  box-shadow: 0 4px 24px rgba(124, 58, 237, 0.4);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124, 58, 237, 0.6);
}

.btn:active {
  transform: translateY(0);
}