:root {
  color-scheme: light dark;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
}

.app-header,
.app-footer {
  text-align: center;
  padding: 24px 16px 8px;
}

.subtitle {
  margin: 4px 0 0;
  color: #94a3b8;
}

.app {
  max-width: 860px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  gap: 16px;
}

.card {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.4);
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
}

.field span {
  font-size: 0.9rem;
  color: #cbd5f5;
}

input,
textarea {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #334155;
  background: rgba(15, 23, 42, 0.5);
  color: inherit;
}

button {
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: #334155;
  color: inherit;
  cursor: pointer;
}

button.primary {
  background: #38bdf8;
  color: #0f172a;
  font-weight: 600;
}

button:hover {
  opacity: 0.9;
}

.notes {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.note {
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 12px;
  padding: 12px;
  background: rgba(30, 41, 59, 0.7);
}

.note h3 {
  margin: 0 0 6px;
}

.note p {
  margin: 0 0 8px;
  white-space: pre-wrap;
}

.note time {
  font-size: 0.8rem;
  color: #94a3b8;
}

.note button {
  margin-top: 8px;
  background: transparent;
  border-color: #f87171;
  color: #f87171;
}

.hint {
  font-size: 0.9rem;
  color: #94a3b8;
}

.status {
  display: grid;
  gap: 4px;
  margin-bottom: 12px;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

@media (max-width: 600px) {
  .actions {
    flex-direction: column;
  }
}