.matter-detail-page {
    margin: 0;
    background-color: #fbfaf6;
    color: #374151;
    font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}

html {
    scroll-behavior: smooth;
}

* {
    scrollbar-width: thin;
    scrollbar-color: #d0192f #f3f4f6;
}

*::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

*::-webkit-scrollbar-track {
    background: #f3f4f6;
    border-radius: 10px;
}

*::-webkit-scrollbar-thumb {
    background: linear-gradient(145deg, #d0192f, #b11225);
    border-radius: 10px;
    border: 2px solid #f3f4f6;
}

*::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(145deg, #b11225, #9a0f1f);
}

.matter-detail-page__pre-header {
    background-color: transparent;
}

.matter-detail-page__pre-header--filled {
    padding: 0;
}

.matter-detail {
    padding-bottom: 6rem;
}

.matter-detail__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 1.4rem;
    background-color: #f5f5f0;
    border-radius: 14px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    box-sizing: border-box;
}

.matter-detail__breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.1rem;
    color: #6b7280;
    margin: 1.6rem 0 1.2rem;
    font-weight: 500;
    flex-wrap: wrap;
}

.matter-detail__breadcrumb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.8rem 1.4rem 0;
    box-sizing: border-box;
}

.matter-detail__breadcrumb a {
    color: #6b7280;
    text-decoration: none;
    transition: all 0.2s ease;
    padding: 0.2rem 0.6rem;
    border-radius: 5px;
    white-space: nowrap;
    word-break: keep-all;
}

.matter-detail__breadcrumb a:hover {
    color: #d0192f;
    background-color: rgba(208, 25, 47, 0.05);
    text-decoration: none;
}

.matter-detail__breadcrumb span[aria-hidden] {
    color: #d1d5db;
    font-weight: 400;
    flex-shrink: 0;
}

.matter-detail__breadcrumb > span:not([aria-hidden]) {
    word-break: break-word;
    overflow-wrap: anywhere;
}

.matter-detail__alert {
    border-radius: 14px;
    padding: 1.2rem 1.4rem;
    margin-bottom: 1.4rem;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.6;
    border: 2px solid transparent;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}

.matter-detail__alert--danger {
    background: linear-gradient(145deg, #fef2f2, #fee2e2);
    color: #991b1b;
    border-color: #fca5a5;
}

.matter-detail__alert--danger::before {
    content: '⚠';
    font-size: 1.4rem;
    line-height: 1.6;
}

.matter-detail__alert--warning {
    background: linear-gradient(145deg, #fffbeb, #fef3c7);
    color: #78350f;
    border-color: #fbbf24;
}

.matter-detail__alert--warning::before {
    content: 'ℹ';
    font-size: 1.4rem;
    line-height: 1.6;
}

.matter-detail__tabs {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 4px;
    margin: 1.4rem 0 1.2rem;
    background: #f3f4f6;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 5px;
}

/* セグメントコントロール風タブ：非アクティブ */
.matter-detail__tab {
    appearance: none;
    background: transparent;
    color: #6b7280;
    border: none;
    border-radius: 7px;
    padding: 0.7rem 1.4rem;
    font-size: 1.05rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

/* PC用：ホバー時のスタイル */
@media (hover: hover) {
    .matter-detail__tab:hover,
    .matter-detail__tab:focus {
        background: rgba(255, 255, 255, 0.5);
        color: #374151;
    }
}

/* タップ時のフィードバック（全デバイス） */
.matter-detail__tab:active {
    transform: scale(0.98);
}

/* アクティブタブ：白背景 + シャドウ */
.matter-detail__tab.is-active {
    background: #ffffff;
    color: #111827;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    font-weight: 600;
}

.matter-detail__panels {
    margin-top: 1.2rem;
}

.matter-detail__panel {
    display: none;
    animation: fadeOut 0.3s ease;
}

.matter-detail__panel.is-active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

.matter-detail__panel--chat {
    background-color: #fbfaf5;
    border-radius: 12px;
    padding: 1.5rem;
}

.matter-detail__panel--chat > .matter-show__inner-container-4 {
    padding: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.8rem 1.6rem;
    border-radius: 8px;
    border: 2px solid transparent;
    font-size: 1.3rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: #f9fafb;
    color: #374151;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover,
.btn:focus {
    background-color: #f3f4f6;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12), 0 2px 4px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.btn-circle {
    border-radius: 9999px;
}

.red-thunderbird {
    background: linear-gradient(145deg, #d0192f, #b11225);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(208, 25, 47, 0.3), 0 2px 4px rgba(0, 0, 0, 0.1);
}

.red-thunderbird:hover,
.red-thunderbird:focus {
    background: linear-gradient(145deg, #b11225, #9a0f1f);
    box-shadow: 0 6px 20px rgba(208, 25, 47, 0.4), 0 3px 6px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.default {
    background: linear-gradient(145deg, #ffffff, #f9fafb);
    border-color: #d1d5db;
    color: #374151;
}

.default:hover,
.default:focus {
    border-color: #9ca3af;
    background: linear-gradient(145deg, #f9fafb, #f3f4f6);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12), 0 2px 4px rgba(0, 0, 0, 0.06);
}

.bg-brown-graige {
    background-color: #6b5d5d;
    color: #ffffff;
}

.text-center {
    text-align: center;
}

.panel-body {
    padding: 1.2rem 1.6rem;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
    border: 2px solid rgba(229, 231, 235, 0.8);
    transition: all 0.3s ease;
    font-size: 1.3rem;
}

.panel-body:hover {
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.12), 0 3px 6px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.panel-body.itemdetail {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.portlet.light {
    background: #ffffff;
    border-radius: 12px;
    padding: 1.6rem;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 2px solid rgba(229, 231, 235, 0.8);
    transition: all 0.3s ease;
    font-size: 1.3rem;
}

.portlet.light:hover {
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1.3rem;
}

.table th,
.table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
    font-size: 1.3rem;
}

.table thead th {
    background-color: #f9fafb;
    font-weight: 600;
    color: #4b5563;
    font-size: 1.3rem;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: #f9fafb;
}

.img-responsive {
    max-width: 100%;
    height: auto;
}

.row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.visible-md,
.visible-lg,
.visible-sm,
.visible-xs {
    display: inline-block;
}

.contract_datetime {
    color: #4d5b64;
}

.alert {
    border-radius: 12px;
    padding: 1.2rem 1.6rem;
    font-weight: 600;
}

.alert-danger {
    background-color: #fee2e2;
    color: #b91c1c;
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.legacy-detail-body .custom-dialog .btn {
    width: auto;
}

@media (max-width: 1024px) {
    .matter-detail__container {
        padding: 0 1.6rem;
    }

    .matter-detail__tabs {
        gap: 0.8rem;
    }

    .matter-detail__tab {
        padding: 0.9rem 1.6rem;
        font-size: 1.3rem;
    }

    .btn {
        padding: 1rem 2rem;
        font-size: 1.3rem;
    }
}

@media (max-width: 767px) {
    .matter-detail__breadcrumb {
        font-size: 0.9rem;
        margin-top: 1.6rem;
        gap: 0.5rem;
    }

    .matter-detail__breadcrumb a {
        padding: 0.2rem 0.4rem;
    }

    /* モバイル：セグメントコントロール風グリッド */
    .matter-detail__tabs {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 4px;
        width: 100%;
        padding: 4px;
    }

    .matter-detail__tab {
        padding: 0.85rem 0.8rem;
        font-size: 0.95rem;
        text-align: center;
    }

    /* モバイルでのアクティブタブ */
    .matter-detail__tab.is-active {
        background: #ffffff;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    }

    .matter-detail__alert {
        padding: 1.2rem 1.6rem;
        font-size: 1.3rem;
    }

    .btn {
        padding: 0.7rem 1.4rem;
        font-size: 1.2rem;
    }

    .panel-body {
        padding: 1rem 1.4rem;
    }

    .portlet.light {
        padding: 1.4rem;
    }
}