/* Empty States */
    .empty-state {
      text-align: center;
      padding: 48px 24px;
      color: var(--text-tertiary);
    }

    .empty-icon {
      font-size: 48px;
      margin-bottom: 16px;
      opacity: 0.4;
    }

    .empty-text {
      font-size: 15px;
      margin-bottom: 16px;
    }

    /* Progress Bar */
    .progress-container {
      margin-top: 20px;
    }

    .progress-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 8px;
    }

    .progress-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-secondary);
    }

    .progress-value {
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
    }

    .progress-bar {
      height: 8px;
      background: var(--border);
      border-radius: 4px;
      overflow: hidden;
    }

    .progress-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--accent), #7c3aed);
      border-radius: 4px;
      transition: width 0.3s ease;
    }

    /* Help & Tooltips */
    .help-icon {
      width: 18px;
      height: 18px;
      background: var(--text-tertiary);
      color: white;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 700;
      cursor: help;
      margin-left: 6px;
      position: relative;
    }

    .help-icon:hover::after {
      content: attr(data-tooltip);
      position: absolute;
      bottom: calc(100% + 8px);
      left: 50%;
      transform: translateX(-50%);
      background: var(--text-primary);
      color: white;
      padding: 8px 12px;
      border-radius: 8px;
      font-size: 12px;
      font-weight: 500;
      white-space: nowrap;
      max-width: 200px;
      white-space: normal;
      width: max-content;
      z-index: 1000;
      box-shadow: var(--shadow-lg);
    }

    .help-icon:hover::before {
      content: '';
      position: absolute;
      bottom: calc(100% + 2px);
      left: 50%;
      transform: translateX(-50%);
      border: 6px solid transparent;
      border-top-color: var(--text-primary);
      z-index: 1000;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .container {
        padding: 20px 16px;
      }

      .month-grid {
        grid-template-columns: 1fr;
      }

      .grid-2, .grid-3 {
        grid-template-columns: 1fr;
      }

      .detail-title-row {
        flex-direction: column;
      }

      .header {
        padding: 0 16px;
      }

      .tabs {
        gap: 0;
      }

      .tab {
        padding: 12px 16px;
        font-size: 13px;
      }

      .fab {
        bottom: 16px;
        right: 16px;
      }

      .quick-actions-menu {
        bottom: 80px;
        right: 16px;
        left: 16px;
      }

      .status-legend {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }

      .stats-row {
        grid-template-columns: 1fr;
      }
    }

    .toast-stack {
      position: fixed;
      top: 20px;
      right: 20px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 2200;
      max-width: min(420px, calc(100vw - 32px));
    }

    .toast {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 12px;
      align-items: start;
      background: rgba(13, 17, 23, 0.96);
      color: #fff;
      border-radius: 14px;
      box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
      padding: 14px 16px;
      transform: translateY(-8px);
      opacity: 0;
      transition: opacity 0.18s ease, transform 0.18s ease;
    }

    .toast.active {
      opacity: 1;
      transform: translateY(0);
    }

    .toast-success {
      background: rgba(6, 95, 70, 0.96);
    }

    .toast-error {
      background: rgba(153, 27, 27, 0.96);
    }

    .toast-message {
      font-size: 14px;
      line-height: 1.5;
    }

    .toast-close {
      background: transparent;
      border: none;
      color: inherit;
      cursor: pointer;
      font-size: 18px;
      line-height: 1;
      padding: 0;
    }

    .confirm-dialog-overlay {
      position: fixed;
      inset: 0;
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 2300;
      padding: 24px;
    }

    .confirm-dialog-overlay.active {
      display: flex;
    }

    .confirm-dialog-backdrop {
      position: absolute;
      inset: 0;
      background: rgba(15, 23, 42, 0.45);
      backdrop-filter: blur(4px);
    }

    .confirm-dialog {
      position: relative;
      width: min(460px, 100%);
      background: var(--surface);
      border-radius: 18px;
      box-shadow: 0 24px 60px rgba(15, 23, 42, 0.2);
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .confirm-dialog-title {
      font-family: 'Syne', sans-serif;
      font-size: 20px;
      font-weight: 700;
    }

    .confirm-dialog-message {
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.6;
    }

    .confirm-dialog-actions {
      display: flex;
      justify-content: flex-end;
      gap: 12px;
      flex-wrap: wrap;
    }

    .confirm-dialog-confirm.danger {
      background: #dc2626;
      border-color: #dc2626;
    }

    .confirm-dialog-confirm.danger:hover {
      background: #b91c1c;
      border-color: #b91c1c;
    }

    body.confirm-open {
      overflow: hidden;
    }