:root {
  --bg: #0b1721;
  --surface: #12283a;
  --text: #e6f1ff;
  --muted: #9fb3c8;
  --primary: #0f4a73;
  --primary-contrast: #ffffff;
  --radius: 12px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
}

.app-bar {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 16px;
  background: linear-gradient(180deg, #0f4a73, #0d3c5e);
  color: var(--primary-contrast);
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.app-bar h1 { font-size: 1.125rem; margin: 0; }

#installBtn {
  border: 0;
  padding: 8px 12px;
  background: #0a7cff;
  color: #fff;
  border-radius: 999px;
  font-weight: 600;
}

.container { padding: 16px; }
.card {
  background: var(--surface);
  padding: 16px;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}
.status { color: var(--muted); }

button {
  background: var(--primary);
  color: var(--primary-contrast);
  border: none;
  padding: 12px 16px;
  border-radius: 10px;
  font-weight: 600;
}

.pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: #0a1620;
  border-radius: 8px;
  padding: 12px;
  overflow: auto;
}

.noscript {
  background: #b00020;
  color: white;
  padding: 12px;
  text-align: center;
}

/* Larger screens */
@media (min-width: 720px) {
  .container { max-width: 720px; margin-inline: auto; }
}

/* Notes UI */
.note-form { display: flex; gap: 8px; margin: 8px 0 12px; }
.note-form input {
  flex: 1;
  border: 1px solid #274760;
  background: #0a1620;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
}
.notes { list-style: none; padding: 0; margin: 12px 0 0; }
.notes li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid #1a3347;
  border-radius: 8px;
  background: #0c1b28;
}
.notes li + li { margin-top: 8px; }
.notes .meta { color: var(--muted); font-size: 0.8rem; }
.notes .actions { display: flex; gap: 8px; }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid #2b4b66;
}