:root {
  color-scheme: light dark;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  margin: 0;
  background: #111827;
  color: #f9fafb;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.cards-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 12px;
  padding: 1rem;
}

.card h2 {
  margin-top: 0;
  margin-bottom: 0.3rem;
}

.meta {
  color: #9ca3af;
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
}

.value-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.6rem;
  padding: 0.6rem;
  background: #111827;
  border-radius: 8px;
}

.value-label {
  font-size: 0.9rem;
  color: #d1d5db;
}

button {
  border: none;
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  background: #2563eb;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

/* Auth overlay */
.auth-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(2,6,23,0.7);
  z-index: 60;
}

.auth-box {
  background: #0b1220;
  border: 1px solid #273449;
  border-radius: 12px;
  padding: 1.25rem;
  width: 96%;
  max-width: 420px;
}

.auth-form { display: flex; flex-direction: column; gap: 0.6rem; }
.auth-form input {
  font-size: 1.4rem;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  border: 1px solid #24303e;
  background: #071022;
  color: #eef2ff;
  text-align: center;
}

.auth-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }
.auth-actions button { padding: 0.6rem 1rem; }
.error { color: #fb7185; min-height: 1.2rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* Mobile adjustments */
@media (max-width: 520px) {
  .value-row { flex-direction: column; align-items: flex-start; }
  .value-row button { width: 100%; }
  .auth-box { width: 92%; padding: 1rem; }
  .header-row { display:flex; align-items:center; justify-content:space-between; gap:1rem; }
  #lock-btn { padding: 0.5rem 0.75rem; }
}

/* Header row */
.header-row { display:flex; align-items:center; justify-content:space-between; }
#lock-btn { border-radius:8px; padding: 0.35rem 0.6rem; background: #374151; color: #e6eef8; border: none; }