:root {
  --bg-color: #ffffff;
  --primary-color: #2c3e50;
  --secondary-color: #666;
  --anchor-color: #4285f4;
  --border-color: #e0e0e0;
  --surface-color: #f8f8f8;
  --danger-color: #e53935;
  --success-color: #43a047;
}

html {
  color-scheme: light dark;
}

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

body {
  font-family: system-ui, sans-serif;
  font-size: 1.1rem;
  line-height: 1.5;
  color: var(--primary-color);
  background-color: var(--bg-color);
  min-height: 100vh;
  padding: 2rem 1rem;
}

.container {
  max-width: min(70ch, 100% - 1rem);
  margin-inline: auto;
}

h1 {
  font-size: 1.46rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

.input-area {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

textarea {
  width: 100%;
  min-height: 100px;
  padding: 0.75rem;
  background: var(--surface-color);
  border: none;
  border-radius: 4px;
  color: var(--primary-color);
  font-family: inherit;
  font-size: 1.1rem;
  resize: vertical;
  line-height: 1.5;
}

textarea:focus {
  outline: none;
  border-color: var(--anchor-color);
}

textarea::placeholder { color: var(--secondary-color); }

button.add-btn {
  align-self: flex-end;
  padding: 5px 10px;
  background: var(--anchor-color);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 1.1rem;
  cursor: pointer;
}

button.add-btn:hover { opacity: 0.85; }
button.add-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.notes-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.note {
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0;
  position: relative;
}

.note:last-child {
  border-bottom: none;
}

.note-content {
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.5;
  padding-right: 4.5rem;
}

.note-actions {
  position: absolute;
  top: 0.75rem;
  right: 0;
  display: flex;
  gap: 0.25rem;
}

.copy-btn,
.delete-btn {
  background: none;
  border: none;
  color: var(--secondary-color);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.copy-btn:hover { color: var(--primary-color); }
.delete-btn:hover { color: var(--danger-color); }

.copy-btn.copied {
  color: var(--success-color);
}

.copy-btn svg,
.delete-btn svg { width: 16px; height: 16px; }

.empty {
  text-align: center;
  color: var(--secondary-color);
  padding: 2rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #121212;
    --primary-color: #ffffff;
    --secondary-color: #f1f1f1;
    --anchor-color: #82aaff;
    --border-color: #333;
    --surface-color: #1e1e1e;
    --danger-color: #f87171;
    --success-color: #4ade80;
  }
}