:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --card: #1a1a1a;
  --border: #2a2a2a;
  --text: #e8e8e8;
  --text-muted: #888;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  text-align: center;
  padding: 3rem 0 1rem;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-size: 1.1rem;
}

/* Main */
main {
  flex: 1;
  padding: 2rem 0 4rem;
}

.section-title {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
}

/* Cards */
.pricing-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  position: relative;
  transition: transform 0.2s, border-color 0.2s;
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.15);
}

.badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-header {
  margin-bottom: 1.5rem;
}

.card-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.price {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.amount {
  font-size: 2.5rem;
  font-weight: 700;
}

.period {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Features */
.features {
  list-style: none;
  margin-bottom: 2rem;
}

.features li {
  padding: 0.4rem 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.check {
  color: var(--success);
  margin-right: 0.5rem;
  font-weight: 700;
}

/* Buttons */
.btn {
  display: block;
  width: 100%;
  padding: 0.85rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  text-align: center;
  border: 2px solid transparent;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--text-muted);
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

/* Success / Cancel pages */
.status-page {
  text-align: center;
  padding: 6rem 0;
}

.status-page .icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.status-page h2 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.status-page p {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.status-page .back-link {
  display: inline-block;
  margin-top: 2rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.status-page .back-link:hover {
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .logo {
    font-size: 1.5rem;
  }

  .amount {
    font-size: 2rem;
  }
}