.document-page {
    background: #f5f7fb;
    color: #111827;
    min-height: 70vh;
}
.document-page .container {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}
.document-hero {
    padding: 34px 0 22px;
}
.document-breadcrumb {
    color: #667085;
    font-size: 14px;
    margin-bottom: 14px;
}
.document-breadcrumb a {
    color: #2563eb;
    text-decoration: none;
}
.document-hero h1 {
    font-size: 42px;
    line-height: 1.1;
    margin: 0 0 10px;
    letter-spacing: -1px;
}
.document-hero p {
    color: #667085;
    font-size: 17px;
    line-height: 1.6;
    max-width: 760px;
    margin: 0;
}
.document-section {
    padding: 10px 0 60px;
}
.doc-alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 16px;
    font-weight: 700;
}
.doc-alert-error {
    background: #fef2f2;
    color: #b42318;
    border: 1px solid #fecaca;
}
.doc-lock-card {
    max-width: 560px;
    margin: 20px auto 0;
    background: #fff;
    border: 1px solid #e4eaf5;
    border-radius: 26px;
    padding: 34px;
    box-shadow: 0 18px 50px rgba(15,23,42,.08);
    text-align: center;
}
.doc-lock-icon {
    width: 70px;
    height: 70px;
    display: grid;
    place-items: center;
    margin: 0 auto 16px;
    border-radius: 22px;
    background: #eef4ff;
    font-size: 34px;
}
.doc-lock-card h2 {
    font-size: 28px;
    margin: 0 0 8px;
}
.doc-lock-card p {
    color: #667085;
    margin: 0 0 22px;
}
.doc-lock-form {
    display: flex;
    gap: 12px;
}
.doc-lock-form input {
    flex: 1;
    border: 1px solid #d0d5dd;
    border-radius: 14px;
    padding: 14px 16px;
    font-size: 16px;
}
.doc-lock-form button,
.doc-download,
.doc-lock-reset {
    border: 0;
    border-radius: 14px;
    background: #facc15;
    color: #111827;
    font-weight: 800;
    padding: 14px 18px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.doc-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    margin-bottom: 20px;
}
.doc-toolbar h2 {
    margin: 0 0 4px;
    font-size: 28px;
}
.doc-toolbar p {
    margin: 0;
    color: #667085;
}
.doc-lock-reset {
    background: #eef4ff;
    color: #2563eb;
}
.doc-folder-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}
.doc-folder-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 188px;
    padding: 22px;
    border: 1px solid #e4eaf5;
    border-radius: 22px;
    background: #fff;
    box-shadow: 0 14px 35px rgba(15,23,42,.06);
    text-decoration: none;
    color: inherit;
    transition: transform .15s ease, box-shadow .15s ease;
}
.doc-folder-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 45px rgba(15,23,42,.1);
}
.doc-folder-icon {
    width: 58px;
    height: 58px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    background: #fff7d6;
    font-size: 32px;
}
.doc-folder-body h3 {
    margin: 0 0 8px;
    font-size: 20px;
    line-height: 1.25;
}
.doc-folder-body p {
    color: #667085;
    line-height: 1.45;
    margin: 0 0 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.doc-folder-body span {
    display: inline-flex;
    background: #f2f4f7;
    color: #344054;
    border-radius: 999px;
    padding: 7px 12px;
    font-size: 13px;
    font-weight: 800;
}
.doc-back-link {
    display: inline-flex;
    color: #2563eb;
    font-weight: 800;
    text-decoration: none;
    margin-bottom: 16px;
}
.doc-file-grid {
    display: grid;
    gap: 14px;
}
.doc-file-card {
    display: grid;
    grid-template-columns: 54px 1fr auto;
    gap: 16px;
    align-items: center;
    background: #fff;
    border: 1px solid #e4eaf5;
    border-radius: 18px;
    padding: 16px;
    box-shadow: 0 10px 28px rgba(15,23,42,.05);
}
.doc-file-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: #f2f4f7;
    font-size: 28px;
}
.doc-file-info h3 {
    margin: 0 0 6px;
    font-size: 18px;
}
.doc-file-info p {
    margin: 0 0 8px;
    color: #667085;
}
.doc-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.doc-meta span {
    display: inline-flex;
    background: #f2f4f7;
    color: #667085;
    border-radius: 999px;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: 800;
}
.doc-download {
    white-space: nowrap;
}
.doc-empty {
    padding: 28px;
    background: #fff;
    border: 1px dashed #cbd5e1;
    border-radius: 20px;
    color: #667085;
    text-align: center;
    font-weight: 700;
}
.doc-admin-list-head,
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    align-items: end;
}
.doc-filter-form {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}
.doc-filter-form select,
.form-grid select {
    border: 1px solid #d0d5dd;
    border-radius: 12px;
    padding: 10px 12px;
    min-height: 42px;
}
@media (max-width: 1024px) {
    .doc-folder-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
    .document-page .container {
        width: min(100% - 28px, 1180px);
    }
    .document-hero {
        padding: 24px 0 14px;
    }
    .document-hero h1 {
        font-size: 32px;
    }
    .document-hero p {
        font-size: 15px;
    }
    .doc-lock-card {
        padding: 24px 18px;
        border-radius: 22px;
    }
    .doc-lock-form {
        flex-direction: column;
    }
    .doc-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }
    .doc-folder-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .doc-folder-card {
        min-height: auto;
        flex-direction: row;
        align-items: center;
        padding: 16px;
        border-radius: 18px;
    }
    .doc-folder-icon {
        flex: 0 0 50px;
        width: 50px;
        height: 50px;
        font-size: 28px;
    }
    .doc-folder-body {
        min-width: 0;
    }
    .doc-folder-body h3 {
        font-size: 18px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .doc-folder-body p {
        -webkit-line-clamp: 1;
        font-size: 14px;
    }
    .doc-file-card {
        grid-template-columns: 46px 1fr;
        gap: 12px;
    }
    .doc-file-icon {
        width: 46px;
        height: 46px;
        font-size: 24px;
    }
    .doc-download {
        grid-column: 1 / -1;
        width: 100%;
    }
    .doc-admin-list-head,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .doc-filter-form {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
}

/* ===== Document viewer update: ưu tiên xem, tải là nút phụ ===== */
.doc-file-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: flex-end;
}
.doc-view-primary {
    border: 0;
    border-radius: 13px;
    background: #2563eb;
    color: #fff;
    font-weight: 900;
    padding: 12px 18px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    box-shadow: 0 10px 22px rgba(37, 99, 235, .18);
}
.doc-download-small {
    width: 42px;
    height: 42px;
    border-radius: 13px;
    background: #eef4ff;
    color: #2563eb;
    font-weight: 900;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}
.doc-view-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}
.doc-viewer-card {
    background: #fff;
    border: 1px solid #e4eaf5;
    border-radius: 22px;
    padding: 14px;
    box-shadow: 0 14px 35px rgba(15,23,42,.06);
    overflow: hidden;
}
.doc-preview-frame {
    display: block;
    width: 100%;
    min-height: 78vh;
    border: 0;
    border-radius: 14px;
    background: #f8fafc;
}
.doc-preview-text {
    min-height: 62vh;
}
.doc-preview-image {
    display: block;
    max-width: 100%;
    max-height: 78vh;
    margin: 0 auto;
    border-radius: 14px;
    object-fit: contain;
    background: #f8fafc;
}
.doc-preview-unavailable {
    min-height: 360px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
    color: #344054;
}
.doc-preview-unavailable h3 {
    margin: 16px 0 8px;
    font-size: 24px;
    color: #111827;
}
.doc-preview-unavailable p {
    max-width: 560px;
    margin: 0 0 22px;
    color: #667085;
    line-height: 1.6;
}
.doc-file-icon-large {
    width: 76px;
    height: 76px;
    font-size: 38px;
}
@media (max-width: 768px) {
    .doc-file-card {
        grid-template-columns: 46px 1fr;
        align-items: start;
    }
    .doc-file-actions {
        grid-column: 1 / -1;
        justify-content: stretch;
    }
    .doc-view-primary {
        flex: 1;
        min-height: 44px;
    }
    .doc-download-small {
        width: 48px;
        height: 44px;
        flex: 0 0 48px;
    }
    .doc-view-actions {
        align-items: stretch;
    }
    .doc-preview-frame {
        min-height: 72vh;
    }
    .doc-viewer-card {
        padding: 8px;
        border-radius: 16px;
        margin-left: -8px;
        margin-right: -8px;
    }
}

/* ===== MOBILE PDF VIEW HOTFIX ===== */
.doc-mobile-direct-open {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 14px;
    padding: 14px;
    border: 1px solid #dbeafe;
    border-radius: 18px;
    background: #eff6ff;
}
.doc-mobile-direct-open strong {
    display: block;
    color: #1d4ed8;
    font-size: 16px;
    margin-bottom: 3px;
}
.doc-mobile-direct-open p {
    margin: 0;
    color: #475467;
    font-size: 14px;
    line-height: 1.35;
}
@media (max-width: 768px) {
    .doc-mobile-direct-open {
        display: flex;
    }
    .doc-viewer-card:has(.doc-preview-pdf) {
        display: none;
    }
    .doc-view-actions {
        align-items: center;
        gap: 10px;
    }
    .doc-view-actions .doc-download-small {
        flex: 0 0 auto;
        padding: 10px 12px !important;
        font-size: 14px !important;
    }
}