* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: #0d0f14;
  color: #fff;
  font-family: Arial, Helvetica, sans-serif;
}
header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 22px 32px;
  background: #11141b;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.eyebrow { margin: 0 0 4px; color: #9aa4b2; letter-spacing: .12em; text-transform: uppercase; font-size: 12px; }
h1 { margin: 0; font-size: 34px; }
.sub { margin: 5px 0 0; color: #b7bec9; }
.home, button {
  border: 1px solid rgba(255,255,255,.16);
  background: #202634;
  color: #fff;
  border-radius: 14px;
  padding: 12px 16px;
  text-decoration: none;
  cursor: pointer;
  font-weight: 700;
}
main { padding: 28px 32px; }
.toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 22px;
}
input, textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.16);
  background: #11141b;
  color: #fff;
  border-radius: 14px;
  padding: 14px;
  font-size: 15px;
}
textarea { min-height: 110px; resize: vertical; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(285px, 1fr));
  gap: 14px;
}
.card {
  background: #171b24;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 14px 35px rgba(0,0,0,.28);
}
.card h3 { margin: 0 0 8px; font-size: 21px; }
.meta { color: #bbc3cf; margin: 5px 0; word-break: break-word; }
.notes {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,.1);
  color: #e3e6ec;
  white-space: pre-wrap;
}
.card-actions { display: flex; gap: 8px; margin-top: 14px; }
.card-actions button { flex: 1; padding: 10px; }
.delete { background: #3b1820; }
.empty {
  grid-column: 1 / -1;
  color: #aeb7c5;
  border: 1px dashed rgba(255,255,255,.2);
  border-radius: 18px;
  padding: 28px;
  text-align: center;
}
dialog {
  width: min(560px, calc(100% - 26px));
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 20px;
  background: #151922;
  color: #fff;
}
dialog::backdrop { background: rgba(0,0,0,.65); }
form { display: grid; gap: 12px; }
form h2 { margin: 0 0 8px; }
.actions { display: flex; justify-content: flex-end; gap: 10px; }
@media (max-width: 700px) {
  header, .toolbar { flex-direction: column; align-items: stretch; }
  main, header { padding: 18px; }
}