.planner-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin-bottom: 20px;
    }

    .field {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .field label {
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      color: var(--color-text-muted);
    }

    .field input {
      width: 100%;
      padding: 11px 12px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      font-family: var(--font-body);
      font-size: 0.92rem;
      color: var(--color-text);
      background: var(--color-surface);
      outline: none;
    }

    .field input:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px var(--color-primary-light);
    }

    .study-days {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      background: var(--color-bg);
      padding: 14px;
      margin-bottom: 20px;
    }

    .study-days-label {
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      color: var(--color-text-muted);
      margin-bottom: 10px;
    }

    .day-grid {
      display: grid;
      grid-template-columns: repeat(7, minmax(0, 1fr));
      gap: 8px;
    }

    .day-check {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      background: var(--color-surface);
      padding: 8px 6px;
      font-size: 0.8rem;
      color: var(--color-text);
      cursor: pointer;
      user-select: none;
    }

    .day-check input {
      margin: 0;
      accent-color: var(--color-primary);
    }

    .subjects-card {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 14px;
      background: var(--color-bg);
      margin-bottom: 16px;
    }

    .subjects-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 10px;
      margin-bottom: 10px;
      flex-wrap: wrap;
    }

    .subjects-head h3 {
      margin: 0;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--color-text);
    }

    .subjects-table-wrap {
      overflow-x: auto;
    }

    .subjects-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 580px;
    }

    .subjects-table th {
      text-align: left;
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--color-text-muted);
      font-weight: 600;
      border-bottom: 1px solid var(--color-border);
      padding: 8px 8px;
      white-space: nowrap;
    }

    .subjects-table td {
      border-bottom: 1px solid var(--color-border-light);
      padding: 8px;
      vertical-align: middle;
    }

    .subjects-table td:first-child {
      font-family: var(--font-mono);
      color: var(--color-text-muted);
      font-size: 0.82rem;
      width: 42px;
      text-align: center;
    }

    .subjects-table input,
    .subjects-table select {
      width: 100%;
      padding: 9px 10px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      font-family: var(--font-body);
      font-size: 0.88rem;
      color: var(--color-text);
      background: var(--color-surface);
      outline: none;
    }

    .subjects-table input:focus,
    .subjects-table select:focus {
      border-color: var(--color-primary);
      box-shadow: 0 0 0 3px var(--color-primary-light);
    }

    .row-remove {
      border: none;
      background: transparent;
      color: var(--color-text-muted);
      cursor: pointer;
      width: 30px;
      height: 30px;
      border-radius: 6px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .row-remove:hover {
      color: #dc2626;
      background: #fef2f2;
    }

    .plan-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 16px;
    }

    .saved-status {
      font-size: 0.8rem;
      color: var(--color-text-muted);
      align-self: center;
    }

    .tooltip-wrap {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      border: 1px solid var(--color-border);
      background: var(--color-surface);
      color: var(--color-text-muted);
      font-family: var(--font-mono);
      font-size: 0.78rem;
      font-weight: 700;
      cursor: help;
      user-select: none;
    }

    .tooltip-wrap:focus {
      outline: none;
      box-shadow: 0 0 0 3px var(--color-primary-light);
      border-color: var(--color-primary);
    }

    .tooltip-bubble {
      position: absolute;
      left: 50%;
      bottom: calc(100% + 10px);
      transform: translateX(-50%);
      min-width: 250px;
      max-width: 310px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      background: var(--color-text);
      color: #fff;
      padding: 8px 10px;
      font-size: 0.78rem;
      line-height: 1.45;
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transition: opacity 140ms ease;
      z-index: 4;
      text-align: left;
    }

    .tooltip-wrap:hover .tooltip-bubble,
    .tooltip-wrap:focus .tooltip-bubble {
      opacity: 1;
      visibility: visible;
    }

    .import-guide {
      margin-bottom: 16px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      background: var(--color-bg);
      padding: 12px 14px;
    }

    .import-guide h4 {
      margin: 0 0 8px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--color-text);
    }

    .import-guide ol {
      margin: 0;
      padding-left: 18px;
      color: var(--color-text-secondary);
      font-size: 0.82rem;
      line-height: 1.55;
    }

    .results {
      display: none;
      border-top: 1px solid var(--color-border-light);
      margin-top: 20px;
      padding-top: 20px;
    }

    .results.visible {
      display: block;
    }

    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-bottom: 14px;
    }

    .kpi {
      border: 1px solid var(--color-border-light);
      border-radius: var(--radius-sm);
      background: var(--color-surface);
      padding: 12px;
      text-align: center;
    }

    .kpi .label {
      font-size: 0.72rem;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      color: var(--color-text-muted);
      font-weight: 600;
      margin-bottom: 4px;
    }

    .kpi .value {
      font-family: var(--font-mono);
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--color-text);
    }

    .results-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 12px;
    }

    .table-card {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      background: var(--color-surface);
      overflow: hidden;
    }

    .table-card h3 {
      margin: 0;
      padding: 12px 14px;
      border-bottom: 1px solid var(--color-border-light);
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--color-text);
      background: var(--color-bg);
    }

    .table-wrap {
      overflow-x: auto;
    }

    .result-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 560px;
    }

    .result-table th {
      text-align: left;
      font-size: 0.73rem;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      color: var(--color-text-muted);
      font-weight: 600;
      border-bottom: 1px solid var(--color-border);
      padding: 9px 10px;
      white-space: nowrap;
    }

    .result-table td {
      padding: 9px 10px;
      border-bottom: 1px solid var(--color-border-light);
      font-size: 0.86rem;
      color: var(--color-text);
      white-space: nowrap;
    }

    .result-table tr:last-child td {
      border-bottom: none;
    }

    .muted-note {
      margin-top: 12px;
      font-size: 0.82rem;
      color: var(--color-text-muted);
      line-height: 1.5;
    }

    .toast-msg {
      position: fixed;
      right: 20px;
      bottom: 20px;
      background: var(--color-text);
      color: #fff;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      font-size: 0.84rem;
      font-weight: 600;
      opacity: 0;
      transform: translateY(10px);
      transition: opacity 180ms ease, transform 180ms ease;
      z-index: 1000;
      pointer-events: none;
    }

    .toast-msg.show {
      opacity: 1;
      transform: translateY(0);
    }

    @media (max-width: 980px) {
      .planner-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 760px) {
      .planner-grid {
        grid-template-columns: 1fr;
      }

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

      .day-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
      }
    }