:root {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color-scheme: light dark;
  --bg: #f3f4f6;
  --panel: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #d1d5db;
  --button: #111827;
  --button-text: #ffffff;
  --secondary: #e5e7eb;
  --secondary-text: #111827;
  --danger: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --panel: #161b25;
    --text: #f3f4f6;
    --muted: #a7b0bf;
    --border: #3a4352;
    --button: #f3f4f6;
    --button-text: #111827;
    --secondary: #2a3240;
    --secondary-text: #f3f4f6;
    --danger: #dc2626;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: calc(12px + env(safe-area-inset-top)) 16px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

h1 { margin: 0; font-size: 1.35rem; }
h2 { margin-top: 0; font-size: 1.1rem; }
.subtitle { margin: 3px 0 0; color: var(--muted); font-size: .85rem; }

.wrap {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 14px 12px calc(30px + env(safe-area-inset-bottom));
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 14px;
}

.panel.small { font-size: .92rem; }

.grid {
  display: grid;
  gap: 12px;
}

.search-grid { grid-template-columns: 2fr 1fr 1fr; }
.form-grid { grid-template-columns: 2fr 1fr 1fr; }
.full { grid-column: 1 / -1; }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 600;
  font-size: .92rem;
}

input, select, textarea, button {
  font: inherit;
}

input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 10px;
  padding: 11px 12px;
  font-weight: 400;
}

.search-input-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.search-input-row input {
  flex: 1 1 auto;
  min-width: 0;
}

.clear-search-btn {
  flex: 0 0 auto;
  white-space: nowrap;
}

textarea { resize: vertical; }

button, .file-button {
  border: 0;
  border-radius: 10px;
  padding: 10px 13px;
  background: var(--button);
  color: var(--button-text);
  font-weight: 700;
  cursor: pointer;
}

button.secondary {
  background: var(--secondary);
  color: var(--secondary-text);
}

button.danger { background: var(--danger); color: white; }

.file-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.file-button input { display: none; }

.button-row, .toolbar {
  display: flex;
  gap: 9px;
  align-items: center;
  margin-top: 12px;
}
.toolbar { justify-content: space-between; }
.wrap-buttons { flex-wrap: wrap; }

.badge {
  white-space: nowrap;
  font-size: .75rem;
  padding: 6px 9px;
  border-radius: 999px;
  background: var(--secondary);
  color: var(--secondary-text);
}

.library-list {
  display: grid;
  gap: 10px;
}

.item-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 13px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

.item-title { margin: 0 0 5px; font-size: 1.05rem; }
.item-meta { color: var(--muted); font-size: .85rem; }
.item-notes { white-space: pre-wrap; margin: 8px 0 0; }

.item-actions {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 110px;
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 24px 10px;
}

.help { color: var(--muted); font-size: .9rem; }
.random-result {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-weight: 700;
}

.danger-zone {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.hidden { display: none !important; }

summary { cursor: pointer; }

@media (max-width: 720px) {
  .search-grid, .form-grid { grid-template-columns: 1fr; }
  .full { grid-column: auto; }
  .item-card { grid-template-columns: 1fr; }
  .item-actions { flex-direction: row; flex-wrap: wrap; min-width: 0; }
  .item-actions button { flex: 1 1 auto; }
  .toolbar { align-items: flex-start; flex-direction: column; }
  .button-row { flex-wrap: wrap; }
  .search-input-row { align-items: stretch; }
  .clear-search-btn { padding-left: 11px; padding-right: 11px; }
}