/* ==========================================
   Hamburger Menu
   ========================================== */
.hamburger-btn {
    display: none;
    background: none;
    border: none;
    color: #717680;
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
}

/* ==========================================
   Responsive Table Card View
   ========================================== */
.table-container table {
    transition: opacity 0.2s;
}

/* ==========================================
   Responsive: Tablet (~768px)
   ========================================== */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

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

    header {
        padding: 12px 0;
        margin-bottom: 16px;
    }

    header .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        position: relative;
    }

    header h1 {
        font-size: 16px;
        flex: 1;
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .header-logo {
        height: 22px;
    }

    .hamburger-btn {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        order: 3;
        background: #F2F4F7;
        border-radius: 8px;
        margin-top: 8px;
        padding: 4px 0;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 10px 16px;
        border-radius: 0;
    }

    .user-info {
        gap: 4px;
    }

    .user-info .user-role {
        display: none;
    }

    .logout-btn {
        padding: 3px 8px;
        font-size: 11px;
    }

    .screen-title {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .card {
        padding: 16px;
        margin-bottom: 12px;
    }

    .section-title {
        font-size: 17px;
        margin: 16px 0 12px 0;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .filter-group {
        flex-direction: column;
    }

    .filter-group select {
        width: 100%;
    }

    .breadcrumb {
        padding: 8px 12px;
        margin-bottom: 12px;
    }

    .breadcrumb-list {
        font-size: 12px;
        gap: 4px;
    }

    .field-group {
        padding: 12px;
    }

    .alert {
        font-size: 13px;
        padding: 10px 12px;
    }

    .alert ul {
        padding-left: 16px;
    }

    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 20px;
    }

    /* Table → Card View */
    .table-container .responsive-card-table thead {
        display: none;
    }

    .table-container .responsive-card-table,
    .table-container .responsive-card-table tbody,
    .table-container .responsive-card-table tr,
    .table-container .responsive-card-table td {
        display: block;
        width: 100%;
    }

    .table-container .responsive-card-table tr {
        background: white;
        border: 1px solid #E4E7EC;
        border-radius: 8px;
        margin-bottom: 12px;
        padding: 12px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    }

    .table-container .responsive-card-table tr:hover {
        background: #fafafa;
    }

    .table-container .responsive-card-table td {
        padding: 6px 0;
        border-bottom: none;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 14px;
        overflow-wrap: break-word;
        word-wrap: break-word;
        min-width: 0;
    }

    .table-container .responsive-card-table td::before {
        content: attr(data-label);
        font-weight: 600;
        color: #414651;
        margin-right: 12px;
        flex-shrink: 0;
        font-size: 12px;
    }

    .table-container .responsive-card-table td:last-child {
        margin-top: 8px;
        padding-top: 8px;
        border-top: 1px solid #eee;
        justify-content: flex-end;
    }

    .table-container .responsive-card-table td .btn {
        width: auto;
    }

    .action-buttons {
        display: flex;
        gap: 4px;
        flex-wrap: nowrap;
        width: 100%;
    }

    .action-buttons .btn {
        width: auto !important;
        padding: 6px 12px !important;
        font-size: 12px !important;
        line-height: 1.2 !important;
        border: none !important;
        white-space: nowrap;
    }

    /* Modal responsive (④) */
    .modal .modal-content,
    .modal-content {
        width: 95% !important;
        max-width: 95% !important;
        margin: 10px auto !important;
        max-height: 90vh;
        overflow-y: auto;
    }

    .modal-dialog {
        margin: 5px auto !important;
        max-width: 95% !important;
    }

    .modal-dialog-centered {
        min-height: auto !important;
    }

    .modal .modal-body {
        padding: 12px !important;
        overflow-x: auto;
    }

    .modal .modal-header {
        padding: 12px !important;
    }

    .modal .modal-footer {
        padding: 12px !important;
        flex-wrap: wrap;
        gap: 8px;
    }

    .modal .modal-footer .btn {
        width: auto;
        flex: 1;
        min-width: 0;
    }

    .modal .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Action bar responsive (モック準拠: flex-direction: column) */
    .action-bar {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .action-bar .btn {
        width: 100%;
        text-align: center;
    }

    /* Tab responsive (③) */
    .tab-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-buttons {
        display: flex;
        flex-wrap: nowrap;
        min-width: max-content;
    }

    .tab-button {
        white-space: nowrap;
        padding: 8px 12px;
        font-size: 13px;
        flex-shrink: 0;
    }

    /* Temporary approval section responsive (②) */
    .temporary-approval {
        padding: 12px !important;
    }

    .temporary-approval-header {
        flex-direction: column !important;
        gap: 8px !important;
    }

    .temporary-approval-buttons {
        flex-direction: column !important;
        gap: 8px !important;
    }

    .temporary-approval-buttons .btn {
        width: 100%;
        text-align: center;
    }

    /* Template card actions responsive (⑩) */
    .template-actions {
        display: flex !important;
        flex-wrap: wrap;
        gap: 6px;
    }

    .template-actions .btn {
        width: auto !important;
        flex: 0 0 auto;
    }

    /* Destination info responsive (モック準拠) */
    .info-grid {
        grid-template-columns: 1fr;
    }

    /* Destination progress responsive (⑨) */
    .destination-progress-card {
        padding: 12px;
    }

    .destination-progress-header {
        flex-direction: column;
        gap: 8px;
    }

    .detail-grid {
        grid-template-columns: 1fr !important;
    }

    .detail-section {
        padding: 8px;
    }

    .step-chips-container {
        flex-wrap: wrap;
    }

    .step-chip {
        font-size: 11px;
        padding: 4px 8px;
    }

    /* Period settings area responsive (⑤) */
    .tiered-pricing-section .form-row,
    .field-group .form-row {
        grid-template-columns: 1fr !important;
    }

    #tieredPricingTable {
        font-size: 12px;
    }

    #tieredPricingTable input {
        min-width: 60px;
        font-size: 12px;
        padding: 6px;
    }

    /* Accordion responsive */
    .accordion-header {
        padding: 12px;
    }

    .checkbox-grid {
        grid-template-columns: 1fr 1fr !important;
    }

    /* Stats row responsive */
    .stats-row {
        flex-wrap: wrap;
        gap: 8px;
    }

    .stat-box {
        min-width: calc(33% - 8px);
        flex: 1;
    }

    /* Detail title row */
    .detail-title-row {
        flex-direction: column;
        gap: 8px;
    }

    /* Card header custom */
    .card-header-custom {
        flex-direction: column;
        gap: 8px;
    }

    .header-buttons {
        flex-wrap: wrap;
        width: 100%;
    }

    .header-buttons .btn {
        width: auto;
    }

    /* Bulk actions responsive */
    .bulk-actions {
        flex-wrap: wrap;
        gap: 8px;
    }

    /* Filter grid responsive */
    .filter-grid {
        grid-template-columns: 1fr !important;
    }

    /* Pagination responsive */
    .pagination-container {
        flex-direction: column;
        gap: 8px;
    }

    .pagination-controls {
        flex-direction: column;
        gap: 8px;
    }

    .page-jump {
        justify-content: center;
    }
}

/* ==========================================
   Responsive: Smartphone (~480px)
   ========================================== */
@media (max-width: 480px) {
    .container {
        padding: 8px;
    }

    header h1 {
        font-size: 14px;
    }

    .header-logo {
        height: 18px;
    }

    .screen-title {
        font-size: 18px;
    }

    .card {
        padding: 12px;
        border-radius: 6px;
    }

    .section-title {
        font-size: 16px;
    }

    .form-group input[type="text"],
    .form-group input[type="number"],
    .form-group input[type="date"],
    .form-group input[type="time"],
    .form-group input[type="month"],
    .form-group input[type="email"],
    .form-group input[type="tel"],
    .form-group select,
    .form-group textarea {
        font-size: 16px;
        padding: 10px;
    }

    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }

    .breadcrumb-list {
        font-size: 11px;
    }

    .table-container .responsive-card-table td {
        font-size: 13px;
        flex-direction: column;
        align-items: flex-start;
    }

    .table-container .responsive-card-table td::before {
        margin-bottom: 2px;
    }

    /* Action bar smartphone */
    .action-bar {
        gap: 6px;
    }

    .action-bar .btn {
        width: 100%;
        text-align: center;
    }

    /* Template actions smartphone (⑩) */
    .template-actions {
        gap: 4px;
    }

    .template-actions .btn {
        padding: 4px 8px !important;
        font-size: 11px !important;
    }

    /* Stats responsive smartphone */
    .stat-box {
        min-width: calc(50% - 8px);
    }

    .stat-box .number {
        font-size: 20px;
    }

    .stat-box .label {
        font-size: 11px;
    }
}