:root {
  --bg: #0b0e17;
  --surface: #141926;
  --border: #262f45;
  --text: #e8ecf4;
  --muted: #8b94ab;
  --accent: #6d7cff;
  --accent-hover: #8590ff;
}

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

[hidden] { display: none !important; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(11, 14, 23, 0.9);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}

.nav nav { display: flex; gap: 1.25rem; align-items: center; }
.nav nav a { color: var(--muted); }
.nav nav a:hover { color: var(--text); }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff !important;
  border: none;
  padding: 0.7rem 1.6rem;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.15s;
}
.btn:hover { background: var(--accent-hover); }
.btn-small { padding: 0.4rem 1rem; font-size: 0.9rem; }

.hero {
  text-align: center;
  padding: 6rem 2rem 4rem;
  background: radial-gradient(ellipse at top, #1a2040 0%, var(--bg) 65%);
}
.hero h1 { font-size: 3rem; margin-bottom: 1rem; }
.hero p { color: var(--muted); max-width: 560px; margin: 0 auto 2rem; font-size: 1.1rem; }

.grid-section { max-width: 1200px; margin: 0 auto; padding: 3rem 2rem 5rem; }
.grid-section h2 { margin-bottom: 2rem; font-size: 1.8rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .category { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; color: var(--accent); }
.card h3 { font-size: 1.1rem; }
.card p { color: var(--muted); font-size: 0.92rem; flex-grow: 1; }
.card .row { display: flex; justify-content: space-between; align-items: center; margin-top: 0.4rem; }
.card .price { font-size: 1.15rem; font-weight: 700; }
.card .price span { font-size: 0.8rem; color: var(--muted); font-weight: 400; }
.card .actions { display: flex; gap: 0.5rem; align-items: center; }
.card .actions .btn { padding: 0.45rem 0.9rem; font-size: 0.88rem; }
.owned-badge { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; color: #4ade80; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text) !important; }
.btn-outline:hover { border-color: var(--accent); background: transparent; }

.auth-page { display: flex; justify-content: center; padding: 5rem 1rem; }
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem;
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.auth-card h1 { font-size: 1.5rem; }
.auth-card label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.9rem; color: var(--muted); }
.auth-card input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.8rem;
  color: var(--text);
  font-size: 1rem;
}
.auth-card input:focus { outline: none; border-color: var(--accent); }

.error { color: #ff7a7a; font-size: 0.9rem; }
.muted { color: var(--muted); font-size: 0.9rem; }

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

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal[hidden] { display: none; }
.modal-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.modal-box p { color: var(--muted); }

@media (max-width: 600px) {
  .hero h1 { font-size: 2.1rem; }
  .nav { padding: 1rem; }
}