:root {
  --ink: #1c1c1e;
  --muted: #6b6b70;
  --accent: #2f6feb;
  --bg: #fafafa;
  --card: #ffffff;
  --border: #e5e5e7;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 32px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.topbar .brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--ink);
  text-decoration: none;
}

.topbar nav a {
  margin-left: 20px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.topbar nav a:hover { color: var(--accent); }

.container {
  max-width: 720px;
  margin: 40px auto;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  margin-bottom: 20px;
}

h1 { font-size: 1.6rem; margin-top: 0; }

form label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

form input[type=text],
form input[type=email],
form input[type=password] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 1rem;
}

button, .btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

button:hover, .btn:hover { opacity: 0.9; }

.flashes { margin-bottom: 20px; }
.flash {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 10px;
  font-size: 0.95rem;
}
.flash-success { background: #e6f7ee; color: #14804a; }
.flash-error { background: #fdecec; color: #b3261e; }

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.plan-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}

.plan-card.current { border-color: var(--accent); }

.plan-price { font-size: 1.8rem; font-weight: 700; margin: 8px 0; }

.muted { color: var(--muted); font-size: 0.9rem; }