:root {
  --primary: #facc15;
  --primary-hover: #eab308;
  --bg-main: #ffffff;
  --bg-sidebar: #f8fafc;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --item-hover: #f1f5f9;
  --item-selected: #fefce8;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
}

.notes {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar Styling */
.notes__sidebar {
  width: 320px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.notes__sidebar-header {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.notes__add {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--primary);
  color: #0f172a;
  border: none;
  border-radius: 12px;
  padding: 12px;
  font-size: 0.95rem;
  font-weight: 550;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(250, 204, 21, 0.3);
}

.notes__add:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.notes__add:active {
  transform: translateY(0);
}

/* Note List */
.notes__list {
  flex-grow: 1;
  overflow-y: auto;
  padding: 0 12px 24px 12px;
}

.notes__list-item {
  position: relative;
  padding: 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 4px;
  border: 1px solid transparent;
}

.notes__list-item:hover {
  background-color: var(--item-hover);
}

.notes__list-item--selected {
  background-color: var(--item-selected);
  border-color: rgba(234, 179, 8, 0.2);
}

.notes__list-item--selected .notes__small-title {
  color: #a16207;
}

.notes__small-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-main);
  padding-right: 24px;
}

.notes__small-body {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.notes__small-lastUpdate {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.notes__delete {
  position: absolute;
  top: 12px;
  right: 12px;
  color: var(--text-muted);
  opacity: 0;
  transition: all 0.2s ease;
  background: none;
  border: none;
  padding: 4px;
  border-radius: 6px;
  cursor: pointer;
}

.notes__list-item:hover .notes__delete {
  opacity: 1;
}

.notes__delete:hover {
  color: #ef4444;
  background-color: rgba(239, 68, 68, 0.05);
}

/* Preview Area */
.notes__preview {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  padding: 40px 60px;
  background-color: white;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.notes__title {
  border: none;
  outline: none;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 24px;
  width: 100%;
  letter-spacing: -0.025em;
}

.notes__title::placeholder {
  color: #cbd5e1;
}

.notes__body {
  border: none;
  outline: none;
  font-size: 1.1rem;
  line-height: 1.6;
  color: #334155;
  resize: none;
  flex-grow: 1;
  width: 100%;
}

.notes__body::placeholder {
  color: #94a3b8;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #e2e8f0;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: #cbd5e1;
}

@media (max-width: 768px) {
  .notes__sidebar {
    width: 260px;
  }
  .notes__preview {
    padding: 24px;
  }
  .notes__title {
    font-size: 1.75rem;
  }
}