/* 커스텀 인라인 달력 컨테이너 */
    .calendar-inline-container {
      background: var(--bg-card);
      border-radius: 24px;
      padding: 1.5rem;
      margin: 0 auto 1.5rem auto;
      box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      border: 1px solid var(--border-color);
      width: 100%;
      animation: fadeIn 0.3s ease-out;
    }

    /* 달력 래퍼 */
    .calendar-wrapper {
      margin-top: 1rem;
    }

    /* 월 네비게이션 */
    .month-navigation {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 1.5rem;
      gap: 1rem;
    }

    .nav-btn {
      width: 44px;
      height: 44px;
      border: none;
      border-radius: 14px;
      background: var(--accent-light);
      color: var(--accent-primary);
      font-size: 1.5rem;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
    }

    @media (hover: hover) {
      .nav-btn:hover {
        background: var(--accent-primary);
        color: white;
        transform: scale(1.1);
      }
    }

    .nav-btn:active {
      transform: scale(0.95);
    }

    .month-year {
      text-align: center;
      flex: 1;
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      min-width: 120px;
    }

    /* 요일 헤더 */
    .weekdays {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 0.8rem;
      margin-bottom: 1rem;
    }

    .weekday {
      text-align: center;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
      padding: 0.8rem 0;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    /* 날짜 그리드 */
    .days-grid {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 0.8rem;
    }

    .day-cell {
      aspect-ratio: 1;
      border-radius: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
      position: relative;
      border: 2px solid transparent;
      user-select: none;
      font-size: 0.95rem;
    }

    .day-cell.other-month {
      color: var(--text-muted);
      opacity: 0.4;
      cursor: default;
    }

    .day-cell.current-month {
      background: #f1f5f9;
      color: var(--text-main);
      border-color: var(--border-color);
    }

    @media (hover: hover) {
      .day-cell.current-month:hover {
        background: var(--accent-light);
        border-color: var(--accent-primary);
        transform: translateY(-4px);
        box-shadow: 0 8px 16px rgba(99, 102, 241, 0.2);
      }
    }

    /* 계획이 있는 날 (아직 미완료) - 진한 회색 배경 (선택된 상태 제외) */
    .day-cell.has-plan:not(.completed):not(.selected) {
      background: #cbd5e1;
      /* 기존 배경보다 더 진한 회색 */
      font-weight: 700;
      color: var(--text-main);
      border-color: #94a3b8;
    }

    .day-cell.today {
      background: var(--accent-light);
      color: var(--accent-primary);
      border-color: var(--accent-primary);
      font-weight: 700;
    }

    @media (hover: hover) {
      .day-cell.today:hover {
        background: var(--accent-primary);
        color: white;
        transform: translateY(-4px);
        box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
      }
    }

    .day-cell.completed {
      background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
      color: transparent;
      /* 날짜 숫자 숨김 */
      border-color: #10b981;
      font-weight: 700;
      box-shadow: 0 8px 16px rgba(16, 185, 129, 0.15);
      animation: stampBounce 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    .day-cell.completed::after {
      content: '✓';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: transparent;
      color: #10b981;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      box-shadow: none;
    }



    .day-cell.selected {
      background: #3b82f6;
      color: #ffffff;
      border-color: #3b82f6;
      font-weight: 700;
      box-shadow: 0 8px 16px rgba(59, 130, 246, 0.4);
    }

    @media (hover: hover) {
      .day-cell.selected:hover {
        background: #2563eb;
        color: #ffffff;
        transform: scale(1.05) translateY(-4px);
        box-shadow: 0 10px 20px rgba(59, 130, 246, 0.5);
      }
    }

    /* 완료 + 선택된 상태: 초록색 유지하며 강조 */
    .day-cell.completed.selected {
      background: linear-gradient(135deg, #10b981 0%, #059669 100%);
      color: transparent;
      border-color: #047857;
      transform: scale(1.05) translateY(-2px);
      box-shadow: 0 10px 20px rgba(16, 185, 129, 0.4);
    }

    .day-cell.completed.selected::after {
      color: white;
    }

    /* ─── 다크모드 달력 스타일 ─── */
    [data-theme="dark"] .day-cell.current-month {
      background: #1e293b;
      color: #e2e8f0;
      border-color: #334155;
    }

    @media (hover: hover) {
      [data-theme="dark"] .day-cell.current-month:hover {
        background: #3949ab;
        border-color: #5e92f3;
        box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
      }
    }

    [data-theme="dark"] .day-cell.has-plan:not(.completed):not(.selected) {
      background: #334155;
      /* 다크모드 진한 회색 */
      border-color: #475569;
    }

    [data-theme="dark"] .day-cell.today {
      background: #5e92f3;
      color: #ffffff;
      border-color: #5e92f3;
      font-weight: 700;
    }

    @media (hover: hover) {
      [data-theme="dark"] .day-cell.today:hover {
        background: #3949ab;
        color: #ffffff;
        box-shadow: 0 8px 16px rgba(99, 102, 241, 0.4);
      }
    }

    [data-theme="dark"] .day-cell.completed {
      background: linear-gradient(135deg, #164e63 0%, #0c4a6e 100%);
      color: transparent;
      border-color: #10b981;
      box-shadow: 0 8px 16px rgba(16, 185, 129, 0.2);
    }

    [data-theme="dark"] .day-cell.completed::after {
      color: #86efac;
    }



    [data-theme="dark"] .day-cell.selected {
      background: #3b82f6;
      color: #ffffff;
      border-color: #60a5fa;
      font-weight: 700;
      box-shadow: 0 8px 16px rgba(59, 130, 246, 0.5);
    }

    @media (hover: hover) {
      [data-theme="dark"] .day-cell.selected:hover {
        background: #2563eb;
        color: #ffffff;
        transform: scale(1.05) translateY(-4px);
        box-shadow: 0 10px 20px rgba(59, 130, 246, 0.6);
      }
    }

    [data-theme="dark"] .day-cell.completed.selected {
      background: linear-gradient(135deg, #059669 0%, #047857 100%);
      color: transparent;
      border-color: #34d399;
      box-shadow: 0 10px 20px rgba(16, 185, 129, 0.4);
    }

    [data-theme="dark"] .day-cell.completed.selected::after {
      color: white;
    }

    @keyframes stampBounce {
      0% {
        transform: scale(0.8);
        opacity: 0;
      }

      50% {
        transform: scale(1.1);
      }

      100% {
        transform: scale(1);
        opacity: 1;
      }
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
      }

      to {
        opacity: 1;
      }
    }

    @keyframes slideUp {
      from {
        transform: translateY(15px);
        opacity: 0;
      }

      to {
        transform: translateY(0);
        opacity: 1;
      }
    }

    /* 달력 스타일 끝 */