@font-face {
    font-family: 'system-mono';
    src: local('SFMono-Regular'), local('Consolas'), local('Menlo');
  }

    :root {
        --White: #FFFFFF;
        --Red: #FF0000;
        --Green: #00FF00;
        --Blue: #0000FF;
        --Black: #000000;
    }

  * { box-sizing: border-box; }

  html, body {
    margin: 0;
    padding: 0;
    background: var(--tally-background);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  }

  .app {
    display: grid;
    grid-template-columns: 340px 1fr;
    min-height: 100vh;
  }

  /* ---------- Sidebar ---------- */
  .sidebar {
    background: var(--tally-navy);
    color: var(--paper);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    position: sticky;
    top: 0;
    height: 100vh;
    border-right: 1px solid var(--tally-navy);
  }

  .brand {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 4px;
  }

  .brand-mark {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    background: linear-gradient(135deg, var(--accent), var(--tally-green) 50%, var(--accent-dark));
    flex-shrink: 0;
  }

  .brand h1 {
    font-size: 15px;
    font-weight: 650;
    letter-spacing: 0.02em;
    margin: 0;
  }

  .brand span.tag {
    font-family: 'SFMono-Regular', 'Consolas', 'Menlo', monospace;
    font-size: 10px;
    color: var(--tally-muted);
    letter-spacing: 0.04em;
  }

  .hint {
    font-size: 12px;
    line-height: 1.55;
    color: #9AA6BE;
    margin: 0;
  }

  textarea {
    flex: 1;
    resize: none;
    background: #0C1830;
    color: #DCE4F2;
    border: 1px solid #24365A;
    border-radius: 8px;
    padding: 14px;
    font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
    font-size: 12.5px;
    line-height: 1.6;
    outline: none;
    tab-size: 2;
  }

  textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(62,124,116,0.25);
  }

  .meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: monospace;
    font-size: 11px;
    color: var(--tally-muted);
  }

  .status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--tally-green);
    transition: background 0.2s;
  }

  .status-dot.error { background: var(--danger); }

  #savedNote {
    color: #6B7A98;
  }

  #savedNote.save-error {
    color: #D98B77;
  }

  .reset-btn {
    font-family: monospace;
    font-size: 11px;
    background: transparent;
    border: none;
    color: var(--tally-muted);
    text-decoration: underline;
    cursor: pointer;
    padding: 0;
  }

  .reset-btn:hover {
    color: var(--paper);
  }

  /* ---------- Main grid area ---------- */
  main {
    padding: 32px 36px 60px;
  }

  .toolbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 22px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .toolbar h2 {
    margin: 0 0 4px;
    font-size: 20px;
    font-weight: 650;
    color: var(--tally-text);
  }

  .toolbar p {
    margin: 0;
    font-size: 12.5px;
    color: var(--tally-muted);
  }

  .count-pill {
    font-family: monospace;
    font-size: 12px;
    background: var(--tally-card);
    border: 1px solid var(--tally-border);
    color: var(--tally-text);
    padding: 6px 12px;
    border-radius: 999px;
  }

  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 14px;
  }

  .swatch {
    aspect-ratio: 1 / 1;
    border-radius: 10px;
    border: 1px solid rgba(0,0,0,0.08);
    padding: 14px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    transition: transform 0.12s ease;
  }

  .swatch:hover {
    transform: translateY(-2px);
  }

  .swatch .nameblock {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
  }

  .swatch .name {
    font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.01em;
    word-break: break-word;
    opacity: 0.92;
  }

  .swatch .hexblock {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }

  .swatch .hex {
    font-family: 'SFMono-Regular', Consolas, Menlo, monospace;
    font-size: 15px;
    font-weight: 650;
    letter-spacing: 0.02em;
  }

  .swatch .copy-btn {
    font-family: monospace;
    font-size: 10px;
    border: 1px solid currentColor;
    background: transparent;
    color: inherit;
    opacity: 0.55;
    border-radius: 5px;
    padding: 3px 6px;
    cursor: pointer;
    transition: opacity 0.15s;
  }

  .swatch .copy-btn:hover { opacity: 1; }

  .swatch .copy-btn.copied {
    opacity: 1;
    border-color: currentColor;
  }

  .empty-state {
    color: var(--tally-muted);
    font-size: 13px;
    padding: 60px 0;
    text-align: center;
    border: 1px dashed var(--tally-border);
    border-radius: 10px;
  }

  ::selection { background: var(--accent-pale); }

  @media (max-width: 900px) {
    .app { grid-template-columns: 1fr; }
    .sidebar { position: relative; height: auto; }
  }