:root {
  --bg: #CC1A7D;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-contrast: #ffffff;
  --danger: #dc2626;
  --accent: #f59e0b;
  --header-bg: #CC1A7D;
  --header-contrast: #ffffff;
  --success: #16a34a;
  --success-contrast: #ffffff;
}

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

.app-header {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--header-bg);
  color: var(--header-contrast, #ffffff);
  border-bottom: 1px solid transparent;
}
.brand { display: flex; align-items: center; gap: 0.5rem; }
.brand .logo { font-size: 1.25rem; }
.brand h1 { font-size: 1.1rem; margin: 0; }


.app {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 1rem;
  padding: 1rem;
}

.sidebar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  /* Make sidebar a fixed-height pane so inner list can scroll */
  height: calc(100vh - 140px);
  overflow: hidden;
}

.search input {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
}
.search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }

.notes-list {
  list-style: none;
  margin: 0.75rem 0 0 0;
  padding: 0;
  /* Allow independent vertical scrolling inside the sidebar */
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}
.notes-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.25rem 0.5rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  margin-bottom: 0.5rem;
  cursor: pointer;
}
.notes-list li:hover { border-color: var(--accent); }
.notes-list li.selected { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.10); }
.notes-list .title { font-weight: 600; }
.notes-list .title .pin { margin-left: 0.35rem; font-size: 0.95rem; }
.notes-list .meta { color: var(--muted); font-size: 0.8rem; }

.editor {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: calc(100vh - 140px);
}
.editor input[type="text"] {
  width: 100%;
  padding: 0.75rem 0.8rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
}
.editor input[type="text"]:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }

.editor textarea {
  width: 100%;
  margin-top: 0.75rem;
  padding: 0.9rem 1rem;
  font-size: 1rem;
  resize: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  min-height: 320px;
}
.editor textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }

.editor-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem 0.75rem;
  justify-content: space-between;
  margin-top: 0.75rem;
}

.btn {
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.02s ease;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.btn:hover { border-color: var(--accent); box-shadow: 0 2px 6px rgba(0,0,0,0.08); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn .icon { display: inline-flex; }
.btn .icon svg { width: 18px; height: 18px; }
.btn.primary {
  background: var(--success, #16a34a);
  color: var(--success-contrast, #ffffff);
  border-color: var(--success, #16a34a);
}
.btn.primary:hover { filter: brightness(1.05); }
.btn.danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.status { color: var(--muted); font-size: 0.85rem; }

.app-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 12px rgba(17, 24, 39, 0.08);
  padding: 0.75rem 1rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
}
.app-footer small { letter-spacing: 0.02em; }

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { order: 2; }
  .editor { order: 1; }
}

/* Context menu */
.context-menu {
  position: fixed;
  z-index: 1000;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  min-width: 160px;
  padding: 0.25rem;
}
.context-menu[hidden] { display: none; }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-overlay[hidden] { display: none; }
.modal {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.18);
  max-width: 640px;
  width: calc(100% - 2rem);
  padding: 1rem 1.25rem;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.modal-header h2 { margin: 0; font-size: 1.1rem; }
.modal-body { color: var(--text); line-height: 1.5; }
.modal-body p { margin: 0.5rem 0; }
.modal-body ul { margin: 0.5rem 0 0 1rem; padding: 0; }
.modal-body li { margin: 0.25rem 0; }
.modal-close {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
}
.modal-close:hover { border-color: var(--accent); }
.context-menu .item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.5rem 0.6rem;
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  border-radius: 6px;
}
.context-menu .item:hover { background: rgba(0,0,0,0.05); }