/* ============================================================
   YearGlance — simple, minimal theme.
   Clean neutral surface, one accent color, plain sans-serif
   type, subtle borders instead of decoration.
   ============================================================ */

   :root {
    --bg: #ffffff;
    --surface: #f8f9fa;
    --border: #e3e6ea;
  
    --text: #1a1d21;
    --text-soft: #667085;
    --text-faint: #98a2b3;
  
    --accent: #3b5bfd;
    --accent-hover: #2d47d6;
    --danger: #e04f4f;
    --danger-hover: #c93f3f;
  
    /* Neutral -> accent ramp for the heatmap */
    --ramp-0: #edeff2;
    --ramp-1: #c6d2fe;
    --ramp-2: #93a9fd;
    --ramp-3: #5b78fc;
    --ramp-4: var(--accent);
  
    --radius: 8px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
    --cell-size: 13px;
    --cell-gap: 4px;
  }
  
  * {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }
  
  /* ---- Header ---- */
  
  .app-header {
    border-bottom: 1px solid var(--border);
    padding: 2.25rem 1.5rem 1.75rem;
    text-align: center;
  }
  
  .app-header h1 {
    margin: 0 0 0.4rem;
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text);
  }
  
  .subtitle {
    margin: 0;
    color: var(--text-soft);
    font-size: 0.95rem;
  }
  
  .container {
    max-width: 1080px;
    margin: 2rem auto;
    padding: 0 1.5rem 3rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }
  
  .card {
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem 2rem;
  }
  
  .card h2 {
    margin-top: 0;
    font-size: 1.05rem;
    font-weight: 600;
  }
  
  .status {
    margin-top: 0.75rem;
    font-size: 0.88rem;
    color: var(--text-soft);
  }
  
  .status.success {
    color: #1c8a4b;
  }
  
  .status.error {
    color: var(--danger);
  }
  
  .app-footer {
    text-align: center;
    padding: 2rem 1.5rem;
    color: var(--text-faint);
    font-size: 0.8rem;
  }
  
  /* ---- Buttons ---- */
  
  .btn {
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--bg);
    color: var(--text);
    padding: 0.55rem 1.1rem;
    cursor: pointer;
    transition: background-color 0.1s ease, border-color 0.1s ease;
  }
  
  .btn:hover {
    background-color: var(--surface);
  }
  
  .btn:active {
    background-color: #eef0f3;
  }
  
  .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  .btn-ink {
    background-color: var(--accent);
    color: #fff;
    border-color: var(--accent);
  }
  
  .btn-ink:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
  }
  
  .btn-paper {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background-color: var(--bg);
  }
  
  .btn-ghost {
    border-color: transparent;
    color: var(--text-soft);
  }
  
  .btn-ghost:hover {
    border-color: var(--border);
    color: var(--text);
    background-color: var(--surface);
  }
  
  .btn-danger {
    border-color: var(--border);
    color: var(--danger);
  }
  
  .btn-danger:hover {
    background-color: #fdf0f0;
    border-color: var(--danger);
  }
  
  .btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }
  
  .btn-icon {
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
    line-height: 1;
  }
  
  .btn-icon-plain {
    background: transparent;
    border: none;
    color: var(--text-soft);
    font-size: 1.5rem;
    line-height: 1;
    padding: 0 0.25rem;
    cursor: pointer;
    font-family: var(--font);
  }
  
  .btn-icon-plain:hover {
    color: var(--text);
  }
  
  /* ---- Auth ---- */
  
  .hidden {
    display: none !important;
  }
  
  .user-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text);
    max-width: 100%;
  }
  
  #user-email {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-soft);
  }
  
  .user-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border);
  }
  
  .auth-card {
    text-align: center;
    padding: 3rem 2rem;
    max-width: 440px;
    margin: 2rem auto 0;
  }
  
  .muted {
    color: var(--text-soft);
    font-size: 0.9rem;
  }
  
  .google-icon {
    flex-shrink: 0;
  }
  
  /* ---- Heatmap ---- */
  
  .heatmap-card {
    width: 100%;
  }
  
  .year-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    margin-bottom: 1.75rem;
  }
  
  .year-label {
    font-size: 1.05rem;
    font-weight: 600;
    min-width: 3.5rem;
    text-align: center;
  }
  
  .heatmap-wrapper {
    display: flex;
    flex-direction: column;
    width: 100%;
  }
  
  .month-labels,
  .heatmap-grid {
    display: grid;
    grid-auto-flow: column;
    gap: var(--cell-gap);
    width: 100%;
    justify-content: space-between;
  }
  
  .month-labels {
    margin-bottom: 6px;
  }
  
  .month-label {
    font-size: 0.7rem;
    color: var(--text-faint);
    font-weight: 500;
  }
  
  .heatmap-grid {
    grid-template-rows: repeat(7, var(--cell-size));
  }
  
  .heatmap-cell {
    width: var(--cell-size);
    height: var(--cell-size);
    border-radius: 2px;
    background-color: var(--ramp-0);
    cursor: pointer;
    transition: transform 0.08s ease;
  }
  
  .heatmap-cell:hover {
    transform: scale(1.3);
    outline: 1.5px solid var(--accent);
    outline-offset: 1px;
  }
  
  .heatmap-cell.filler {
    background-color: transparent;
    cursor: default;
  }
  
  .heatmap-cell.filler:hover {
    transform: none;
    outline: none;
  }
  
  .heatmap-cell.today {
    outline: 1.5px solid var(--text);
    outline-offset: 1px;
  }
  
  .heatmap-cell.level-0 { background-color: var(--ramp-0); }
  .heatmap-cell.level-1 { background-color: var(--ramp-1); }
  .heatmap-cell.level-2 { background-color: var(--ramp-2); }
  .heatmap-cell.level-3 { background-color: var(--ramp-3); }
  .heatmap-cell.level-4 { background-color: var(--ramp-4); }
  
  .heatmap-legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
    margin-top: 1.5rem;
    font-size: 0.78rem;
    color: var(--text-faint);
  }
  
  .legend-label {
    margin: 0 0.15rem;
  }
  
  .legend-swatch {
    width: var(--cell-size);
    height: var(--cell-size);
    border-radius: 2px;
    display: inline-block;
  }
  
  .legend-swatch.level-0 { background-color: var(--ramp-0); }
  .legend-swatch.level-1 { background-color: var(--ramp-1); }
  .legend-swatch.level-2 { background-color: var(--ramp-2); }
  .legend-swatch.level-3 { background-color: var(--ramp-3); }
  .legend-swatch.level-4 { background-color: var(--ramp-4); }
  
  /* ---- Modal / note editor ---- */
  
  .modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(20, 22, 26, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    z-index: 100;
  }
  
  .modal {
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 8px 30px rgba(20, 22, 26, 0.12);
    width: 100%;
    max-width: 900px;
    height: 85vh;
    max-height: 780px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  
  .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.5rem;
    border-bottom: 1px solid var(--border);
  }
  
  .modal-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
  }
  
  .editor-container {
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background-color: var(--bg);
  }
  
  .editor-container .ql-toolbar {
    border: none;
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    font-family: var(--font) !important;
  }
  
  .editor-container .ql-container {
    flex: 1;
    overflow-y: auto;
    font-size: 1rem;
    border: none;
    font-family: var(--font) !important;
  }
  
  .editor-container .ql-editor {
    padding: 1.25rem 1.5rem;
    min-height: 100%;
    color: var(--text);
  }
  
  .editor-container .ql-editor.ql-blank::before {
    font-style: normal;
    color: var(--text-faint);
    left: 1.5rem;
  }
  
  .modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    gap: 1rem;
  }
  
  .modal-footer-right {
    display: flex;
    align-items: center;
    gap: 1rem;
  }
  
  .save-status {
    font-size: 0.8rem;
    color: var(--text-soft);
  }
  
  .char-count {
    font-size: 0.78rem;
    color: var(--text-faint);
    font-variant-numeric: tabular-nums;
  }
  
  .char-count.char-count-limit {
    color: var(--danger);
    font-weight: 600;
  }
  
  @media (max-width: 640px) {
    .modal-overlay {
      padding: 0;
    }
  
    .modal {
      height: 100vh;
      max-height: none;
      border-radius: 0;
    }
  
    .card {
      padding: 1.25rem;
    }
  
    .app-header {
      padding: 1.5rem 1rem 1.25rem;
    }
  
    .app-header h1 {
      font-size: 1.35rem;
    }
  
    .year-nav {
      gap: 0.9rem;
    }
  
    .modal-footer {
      flex-wrap: wrap;
    }
  
    /* Heatmap scroll constraints for mobile */
    .heatmap-wrapper {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      padding-bottom: 0.75rem; 
    }
  
    .month-labels,
    .heatmap-grid {
      width: max-content;
      min-width: 100%;
    }
  
    .heatmap-cell:hover {
      transform: none;
      outline: 1.5px solid var(--accent);
    }
  }