:root {
    --book-bg: #06111f;
    --book-panel: rgba(10, 26, 48, .82);
    --book-panel-strong: rgba(8, 19, 35, .94);
    --book-line: rgba(127, 215, 255, .24);
    --book-line-strong: rgba(127, 215, 255, .48);
    --book-text: #f3fbff;
    --book-muted: #a9bed0;
    --book-cyan: #79dbff;
    --book-gold: #d7ad58;
    --book-purple: #9b72ff;
    --book-danger: #ff7d7d;
    --book-radius: 8px;
}

* {
    box-sizing: border-box;
}

body.book-store-body,
body.book-store-page {
    min-height: 100vh;
    margin: 0;
    color: var(--book-text);
    background:
        linear-gradient(180deg, rgba(3, 8, 28, .72), rgba(3, 8, 28, .90)),
        url("/assets/images/book-store/backgrounds/book-page-bg-1920x1080.webp") center top / cover fixed;
    font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
    letter-spacing: 0;
}

body.book-cart-page {
    background-image:
        linear-gradient(180deg, rgba(3, 8, 28, .72), rgba(3, 8, 28, .92)),
        url("/assets/images/book-store/backgrounds/book-page-bg-1920x1080.webp");
}

body.book-checkout-page {
    background-image:
        linear-gradient(180deg, rgba(3, 8, 28, .72), rgba(3, 8, 28, .92)),
        url("/assets/images/book-store/backgrounds/book-checkout-bg-1920x1080.webp");
}

a {
    color: inherit;
}

.book-topbar {
    position: sticky;
    top: 0;
    z-index: 30;
    border-bottom: 1px solid var(--book-line);
    background:
        linear-gradient(90deg, rgba(4, 10, 31, .94), rgba(19, 10, 48, .9)),
        url("/assets/images/book-store/backgrounds/book-page-bg-navy-1920x1080.webp") center / cover;
    backdrop-filter: blur(16px);
}

.book-topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    width: min(1440px, calc(100% - 32px));
    min-height: 72px;
    margin: 0 auto;
}

.book-brand {
    display: inline-flex;
    align-items: center;
    min-width: 128px;
}

.book-brand img {
    width: 148px;
    max-width: 38vw;
    height: auto;
    display: block;
}

.book-navlinks {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.book-mobile-nav {
    display: none;
    width: 100%;
}

.book-mobile-nav summary {
    padding: 9px 14px;
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
    background: rgba(13, 36, 64, .8);
    cursor: pointer;
    font-weight: 700;
}

.book-mobile-nav[open] .book-navlinks {
    margin-top: 8px;
}

.book-navlinks a,
.book-inline-form button,
.book-admin-topbar button,
.book-admin-site-link,
.book-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 8px 14px;
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
    color: var(--book-text);
    background: rgba(13, 36, 64, .72);
    text-decoration: none;
    font-size: .94rem;
    line-height: 1.2;
    transition: border-color .18s ease, transform .18s ease, background .18s ease;
}

.book-navlinks a:hover,
.book-inline-form button:hover,
.book-admin-topbar button:hover,
.book-admin-site-link:hover,
.book-btn:hover {
    border-color: var(--book-cyan);
    background: rgba(20, 58, 96, .84);
    transform: translateY(-1px);
}

.book-inline-form {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.book-inline-form button,
.book-admin-topbar button {
    cursor: pointer;
}

.book-member-name {
    color: var(--book-gold);
    font-weight: 700;
    white-space: nowrap;
}

.book-alert,
.book-admin-alert {
    width: min(1180px, calc(100% - 32px));
    margin: 18px auto 0;
    padding: 12px 16px;
    border: 1px solid rgba(215, 173, 88, .5);
    border-radius: var(--book-radius);
    background: rgba(47, 35, 12, .84);
    color: #fff3cc;
}

.book-shell {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 22px;
    width: min(1440px, calc(100% - 32px));
    margin: 28px auto 56px;
}

.book-sidebar {
    align-self: start;
    position: sticky;
    top: 96px;
    padding: 16px;
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
    background:
        linear-gradient(180deg, rgba(8, 16, 44, .86), rgba(6, 12, 34, .92)),
        url("/assets/images/book-store/backgrounds/book-sidebar-bg-520x1500.webp") center top / cover;
}

.book-search {
    display: grid;
    gap: 10px;
    margin-bottom: 16px;
}

.book-search label,
.book-field label {
    color: var(--book-muted);
    font-size: .9rem;
}

.book-search-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
}

.book-input,
.book-select,
.book-textarea {
    width: 100%;
    min-height: 42px;
    padding: 10px 12px;
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
    color: var(--book-text);
    background: rgba(5, 15, 28, .86);
    outline: none;
}

.book-textarea {
    min-height: 150px;
    resize: vertical;
}

.book-input:focus,
.book-select:focus,
.book-textarea:focus {
    border-color: var(--book-cyan);
    box-shadow: 0 0 0 3px rgba(121, 219, 255, .12);
}

.book-category-links {
    display: grid;
    gap: 10px;
}

.book-category-link {
    display: block;
    overflow: visible;
    padding: 0;
    border: 1px solid rgba(127, 215, 255, .18);
    border-radius: var(--book-radius);
    background: rgba(5, 16, 31, .74);
    text-decoration: none;
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.book-category-link img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: auto;
    object-fit: contain;
}

.book-category-link:hover,
.book-category-link:focus-visible {
    border-color: var(--book-cyan);
    box-shadow: 0 0 20px rgba(121, 219, 255, .14);
    transform: translateY(-1px);
}

.book-content {
    min-width: 0;
}

.book-category-header {
    overflow: hidden;
    margin-bottom: 20px;
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
}

.book-category-header img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 280px;
    object-fit: cover;
}

.book-section {
    margin-bottom: 30px;
    padding: 18px;
    border: 1px solid rgba(127, 215, 255, .14);
    border-radius: var(--book-radius);
    background:
        linear-gradient(180deg, rgba(7, 16, 42, .74), rgba(5, 12, 31, .84)),
        url("/assets/images/book-store/backgrounds/book-content-bg-1600x1000.webp") center / cover;
}

.book-section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}

.book-section-head h1,
.book-section-head h2 {
    margin: 0;
    font-size: clamp(1.35rem, 2vw, 1.9rem);
}

.book-section-head p {
    margin: 4px 0 0;
    color: var(--book-muted);
}

.book-product-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.book-product-card {
    display: grid;
    grid-template-rows: auto 1fr auto;
    overflow: hidden;
    min-height: 100%;
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
    background:
        linear-gradient(180deg, rgba(10, 26, 48, .82), rgba(7, 16, 37, .9)),
        url("/assets/images/book-store/backgrounds/parchment-panel-1200x800.webp") center / cover;
}

.book-product-card img {
    width: 100%;
    aspect-ratio: 7 / 10;
    object-fit: cover;
    display: block;
    background: rgba(255, 255, 255, .04);
}

.book-product-card-body {
    padding: 12px;
}

.book-product-card h3 {
    min-height: 2.8em;
    margin: 0 0 8px;
    font-size: 1rem;
    line-height: 1.4;
}

.book-product-card h3 a {
    text-decoration: none;
}

.book-product-card .book-meta {
    color: var(--book-muted);
    font-size: .84rem;
}

.book-price {
    color: var(--book-gold);
    font-weight: 800;
    font-size: 1.08rem;
}

.book-product-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 0 12px 12px;
}

.book-btn {
    width: 100%;
    border-color: rgba(215, 173, 88, .42);
    background: rgba(54, 40, 13, .78);
}

.book-btn-primary {
    border-color: rgba(121, 219, 255, .62);
    background: linear-gradient(180deg, rgba(18, 94, 135, .95), rgba(13, 58, 96, .95));
}

.book-btn-danger {
    border-color: rgba(255, 125, 125, .54);
    background: rgba(94, 24, 30, .86);
}

.book-empty {
    padding: 24px;
    border: 1px dashed var(--book-line);
    border-radius: var(--book-radius);
    color: var(--book-muted);
    background: rgba(6, 17, 31, .64);
}

.book-detail {
    width: min(1180px, calc(100% - 32px));
    margin: 28px auto 56px;
}

.book-detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(340px, .92fr);
    gap: 24px;
    align-items: start;
}

.book-gallery,
.book-form-panel,
.book-table-panel,
.book-detail-info,
.book-order-panel {
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
    background: var(--book-panel);
}

.book-gallery {
    overflow: hidden;
}

.book-gallery-frame {
    position: relative;
    aspect-ratio: 4 / 3;
    background: rgba(255, 255, 255, .04);
}

.book-gallery-frame img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity .32s ease;
}

.book-gallery-frame img.is-active {
    opacity: 1;
}

.book-gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
    gap: 8px;
    padding: 10px;
}

.book-gallery-thumbs button {
    padding: 0;
    border: 1px solid transparent;
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
}

.book-gallery-thumbs button.is-active {
    border-color: var(--book-gold);
}

.book-gallery-thumbs img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 5px;
    display: block;
}

.book-detail-info {
    padding: 22px;
}

.book-detail-info h1 {
    margin: 0 0 12px;
    font-size: clamp(1.65rem, 3vw, 2.35rem);
}

.book-detail-text {
    margin-top: 18px;
    color: #d8eaf5;
    line-height: 1.85;
    white-space: pre-line;
}

.book-form-panel,
.book-order-panel {
    width: min(760px, calc(100% - 32px));
    margin: 32px auto 56px;
    padding: 24px;
}

.book-form-panel.wide,
.book-table-panel.wide {
    width: min(1180px, calc(100% - 32px));
}

.book-form-panel h1,
.book-order-panel h1 {
    margin: 0 0 18px;
}

.book-form-grid {
    display: grid;
    gap: 16px;
}

.book-form-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.book-field {
    display: grid;
    gap: 7px;
}

.book-upload-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    align-items: center;
}

.book-upload-row .book-btn {
    width: auto;
    min-width: 116px;
    white-space: nowrap;
}

.book-validation {
    color: #ffd2d2;
    font-size: .9rem;
}

.book-captcha-row {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: center;
    gap: 12px;
}

.book-captcha-row img {
    width: 180px;
    height: 72px;
    border-radius: var(--book-radius);
    border: 1px solid var(--book-line);
}

.book-table-panel {
    width: min(1180px, calc(100% - 32px));
    margin: 32px auto 56px;
    overflow: hidden;
}

.book-table-head {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: center;
    padding: 18px;
    border-bottom: 1px solid var(--book-line);
}

.book-table-head h1 {
    margin: 0;
    font-size: 1.55rem;
}

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

.book-table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
}

.book-table th,
.book-table td {
    padding: 12px 14px;
    border-bottom: 1px solid rgba(127, 215, 255, .14);
    vertical-align: middle;
}

.book-table th {
    color: var(--book-muted);
    font-weight: 700;
    background: rgba(6, 17, 31, .56);
}

.book-table td form {
    margin: 0;
}

.book-cart-image {
    width: 72px;
    aspect-ratio: 7 / 10;
    object-fit: cover;
    border-radius: 6px;
}

.book-order-links {
    display: flex;
    justify-content: flex-end;
    padding: 16px;
}

.book-order-tabs {
    display: flex;
    gap: 8px;
    padding: 16px;
    flex-wrap: wrap;
}

.book-order-tabs a {
    padding: 9px 16px;
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
    text-decoration: none;
}

.book-order-tabs a.is-active {
    color: #2b1b0d;
    background: var(--book-gold);
}

.book-cancel-form {
    display: grid;
    grid-template-columns: minmax(180px, 1fr) auto;
    gap: 8px;
}

.book-muted {
    color: var(--book-muted);
}

.book-total-row {
    display: flex;
    justify-content: flex-end;
    gap: 18px;
    align-items: center;
    padding: 18px;
    font-size: 1.15rem;
}

.book-total-row strong,
.book-total-row .book-price {
    white-space: nowrap;
}

.book-total-row .book-btn {
    width: auto;
    min-width: 118px;
    flex: 0 0 auto;
}

.book-footer {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    padding: 26px 16px 36px;
    color: var(--book-muted);
    border-top: 1px solid rgba(127, 215, 255, .12);
}

body.book-admin-login-page {
    background:
        linear-gradient(180deg, rgba(3, 8, 28, .62), rgba(3, 8, 28, .92)),
        url("/assets/images/book-store/backgrounds/book-admin-bg-1920x1080.webp") center / cover fixed;
}

body.book-member-login-page {
    background:
        linear-gradient(180deg, rgba(3, 8, 28, .62), rgba(3, 8, 28, .92)),
        url("/assets/images/book-store/backgrounds/book-login-bg-1600x1000.webp") center / cover fixed;
}

body.book-admin-body {
    min-height: 100vh;
    margin: 0;
    color: var(--book-text);
    background:
        linear-gradient(180deg, rgba(3, 8, 28, .78), rgba(3, 8, 28, .96)),
        url("/assets/images/book-store/backgrounds/book-admin-bg-1920x1080.webp") center / cover fixed;
    font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
}

.book-admin-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 270px;
    padding: 20px 16px;
    border-right: 1px solid var(--book-line);
    background: rgba(4, 13, 28, .94);
}

.book-admin-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    color: var(--book-text);
    text-decoration: none;
    font-weight: 800;
}

.book-admin-logo img {
    width: 108px;
    height: auto;
}

.book-admin-sidebar nav {
    display: grid;
    gap: 8px;
}

.book-admin-sidebar nav a {
    padding: 11px 12px;
    border: 1px solid rgba(127, 215, 255, .16);
    border-radius: var(--book-radius);
    color: var(--book-text);
    text-decoration: none;
    background: rgba(12, 31, 56, .7);
}

.book-admin-sidebar nav a:hover {
    border-color: var(--book-cyan);
}

.book-admin-site-link {
    margin-top: 18px;
    width: 100%;
}

.book-admin-main {
    min-height: 100vh;
    margin-left: 270px;
}

.book-admin-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 72px;
    padding: 14px 24px;
    border-bottom: 1px solid var(--book-line);
    background: rgba(5, 15, 29, .86);
    backdrop-filter: blur(14px);
}

.book-admin-topbar small {
    display: block;
    color: var(--book-muted);
}

.book-admin-topbar form {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.book-admin-content {
    padding: 24px;
}

.book-admin-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.book-admin-metric {
    padding: 18px;
    border: 1px solid var(--book-line);
    border-radius: var(--book-radius);
    background: var(--book-panel);
}

.book-admin-metric span {
    color: var(--book-muted);
}

.book-admin-metric strong {
    display: block;
    margin-top: 8px;
    font-size: 2rem;
}

.book-admin-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.book-inline-edit {
    display: grid;
    grid-template-columns: repeat(4, minmax(130px, 1fr)) auto;
    gap: 8px;
}

.book-thumb-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px;
}

.book-thumb-list img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid var(--book-line);
}

.book-thumb-item {
    display: grid;
    gap: 8px;
}

.book-thumb-item form {
    margin: 0;
}

.book-thumb-item .book-btn {
    min-height: 34px;
    padding: 6px 10px;
    font-size: .86rem;
}

@media (max-width: 1180px) {
    .book-product-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 920px) {
    .book-topbar-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 12px 0;
    }

    .book-navlinks {
        justify-content: flex-start;
        width: 100%;
    }

    .book-shell {
        grid-template-columns: 1fr;
    }

    .book-sidebar {
        position: static;
    }

    .book-category-links {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .book-product-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .book-detail-grid,
    .book-form-grid.two {
        grid-template-columns: 1fr;
    }

    .book-admin-sidebar {
        position: static;
        width: auto;
        border-right: 0;
        border-bottom: 1px solid var(--book-line);
    }

    .book-admin-main {
        margin-left: 0;
    }

    .book-admin-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .book-inline-edit {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 620px) {
    .book-desktop-nav {
        display: none;
    }

    .book-mobile-nav {
        display: block;
    }

    .book-product-grid,
    .book-admin-grid {
        grid-template-columns: 1fr;
    }

    .book-shell {
        width: min(100% - 20px, 1440px);
        margin-top: 14px;
    }

    .book-sidebar,
    .book-section {
        padding: 12px;
    }

    .book-navlinks a,
    .book-inline-form button {
        flex: 1 1 calc(50% - 8px);
        padding-inline: 10px;
        font-size: .88rem;
    }

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

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

    .book-upload-row .book-btn {
        width: 100%;
    }

    .book-table-head,
    .book-total-row,
    .book-section-head,
    .book-admin-topbar {
        align-items: stretch;
        flex-direction: column;
    }
}

/* v5 final literary theme */
:root {
    --book-bg: #250507;
    --book-panel: #f3e1b9;
    --book-panel-strong: #f8edcf;
    --book-line: rgba(126, 66, 24, .54);
    --book-line-strong: #9c5d20;
    --book-text: #f6e1ad;
    --book-muted: #81543c;
    --book-cyan: #c99542;
    --book-gold: #d4a14b;
    --book-danger: #9b2828;
    --book-radius: 8px;
}

body.book-store-body,
body.book-store-page,
body.book-home-page {
    color: #f7dfaa;
    background:
        linear-gradient(180deg, rgba(47, 4, 8, .18), rgba(25, 2, 5, .5)),
        url("/assets/images/book-store/backgrounds/book-home-outer-bg-1920x1200.webp") center top / cover fixed;
    font-family: "Noto Serif TC", "PMingLiU", "Microsoft JhengHei", serif;
}

body.book-category-page {
    background: url("/assets/images/book-store/backgrounds/book-category-page-bg-1920x1200.webp") center top / cover fixed;
}

body.book-product-detail-page {
    background: url("/assets/images/book-store/backgrounds/book-product-page-bg-1920x1200.webp") center top / cover fixed;
}

body.book-cart-page {
    background: url("/assets/images/book-store/backgrounds/book-cart-page-bg-1920x1200.webp") center top / cover fixed;
}

body.book-checkout-page {
    background: url("/assets/images/book-store/backgrounds/book-checkout-page-bg-1920x1200.webp") center top / cover fixed;
}

body.book-orders-page {
    background: url("/assets/images/book-store/backgrounds/book-orders-page-bg-1920x1200.webp") center top / cover fixed;
}

body.book-member-login-page {
    background: url("/assets/images/book-store/backgrounds/book-login-page-bg-1600x1000.webp") center top / cover fixed;
}

body.book-register-page {
    background: url("/assets/images/book-store/backgrounds/book-register-page-bg-1600x1000.webp") center top / cover fixed;
}

body.book-register-agreement-page {
    background: url("/assets/images/book-store/backgrounds/book-register-agreement-bg-1600x1000.webp") center top / cover fixed;
}

body.book-result-page {
    background: url("/assets/images/book-store/backgrounds/book-result-page-bg-1600x1000.webp") center top / cover fixed;
}

.book-topbar {
    border-color: rgba(208, 157, 70, .58);
    background: rgba(39, 6, 8, .94);
}

.book-navlinks a,
.book-inline-form button,
.book-admin-topbar button,
.book-admin-site-link,
.book-btn,
.book-mobile-nav summary {
    border-color: rgba(213, 164, 76, .52);
    color: #f6dfa7;
    background: linear-gradient(180deg, #70251d, #4c130f);
}

.book-navlinks a:hover,
.book-inline-form button:hover,
.book-admin-topbar button:hover,
.book-admin-site-link:hover,
.book-btn:hover {
    border-color: #edc77d;
    background: linear-gradient(180deg, #8a3528, #5c1812);
}

.book-shell {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 12px;
    width: min(1540px, calc(100% - 24px));
    align-items: start;
}

.book-sidebar {
    top: 88px;
    padding: 24px 18px;
    border: 1px solid #a76d31;
    color: #f4d998;
    background: url("/assets/images/book-store/backgrounds/book-sidebar-panel-360x1220.webp") center top / 100% 100% no-repeat;
}

.book-search label {
    color: #f1d99f;
}

.book-input,
.book-select,
.book-textarea {
    border-color: #9a642e;
    color: #4c2418;
    background: #f7e8c5;
}

.book-category-links {
    gap: 8px;
}

.book-category-link {
    display: block;
    width: 100%;
    overflow: visible;
    padding: 0;
    border: 0;
    border-radius: 0;
    line-height: 0;
    background: transparent;
    text-decoration: none;
}

.book-category-link::before,
.book-category-link::after {
    content: none;
}

.book-category-link img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: auto;
    object-fit: contain;
}

.book-content {
    min-width: 0;
    min-height: 760px;
    padding: 28px;
    border: 2px solid #9a6128;
    border-radius: 8px;
    color: #4f2518;
    background: url("/assets/images/book-store/backgrounds/book-main-content-panel-1600x1180.webp") center top / 100% 100% no-repeat;
}

.book-category-header {
    overflow: visible;
    border: 0;
    border-radius: 0;
}

.book-category-header img {
    width: 100%;
    height: auto;
    max-height: none;
    object-fit: contain;
}

.book-section {
    padding: 16px;
    border: 0;
    color: #4c2619;
    background: transparent;
}

.book-section-head {
    justify-content: center;
    text-align: center;
    border-bottom: 1px solid rgba(126, 70, 30, .35);
    padding-bottom: 12px;
}

.book-section-head h1,
.book-section-head h2,
.book-section-head p {
    color: #6e301d;
}

.book-empty {
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 0;
    color: #6d4932;
    background: url("/assets/images/book-store/ui/book-empty-state-980x160.png") center / 100% 100% no-repeat;
}

.book-product-grid {
    gap: 12px;
}

.book-product-card {
    overflow: visible;
    padding: 13px 13px 16px;
    border: 0;
    border-radius: 0;
    color: #4e2519;
    background: url("/assets/images/book-store/ui/book-product-card-frame-255x430.png") center / 100% 100% no-repeat;
}

.book-product-card img {
    border-radius: 3px;
    background: #ead5a9;
}

.book-product-card h3 a {
    color: #4e2519;
}

.book-price {
    color: #7a281b;
}

.book-gallery,
.book-form-panel,
.book-table-panel,
.book-detail-info,
.book-order-panel {
    border: 1px solid #9f672f;
    color: #4d2619;
    background: #f4e3bd url("/assets/images/book-store/ui/book-form-panel-1000x900.webp") center / 100% 100% no-repeat;
}

.book-detail-text,
.book-table th,
.book-muted,
.book-field label {
    color: #74513b;
}

.book-table th {
    background: rgba(153, 91, 38, .13);
}

.book-table th,
.book-table td {
    border-color: rgba(126, 70, 30, .25);
}

body.book-cart-page .book-table-panel {
    background-image: url("/assets/images/book-store/ui/book-cart-panel-1400x900.webp");
}

body.book-checkout-page .book-form-panel {
    background-image: url("/assets/images/book-store/ui/book-checkout-panel-1400x1100.webp");
}

body.book-orders-page .book-table-panel,
body.book-orders-page .book-order-panel {
    background-image: url("/assets/images/book-store/ui/book-orders-panel-1400x950.webp");
}

body.book-register-page .book-form-panel {
    background-image: url("/assets/images/book-store/ui/book-register-card-1000x900.webp");
}

body.book-register-agreement-page .book-form-panel {
    background-image: url("/assets/images/book-store/ui/book-agreement-card-1000x760.webp");
}

body.book-result-page .book-form-panel,
body.book-result-page .book-order-panel {
    background-image: url("/assets/images/book-store/ui/book-success-card-900x620.webp");
}

body.book-fail-page .book-form-panel,
body.book-fail-page .book-order-panel {
    background-image: url("/assets/images/book-store/ui/book-fail-card-900x620.webp");
}

body.book-admin-login-page {
    background: url("/assets/images/book-store/backgrounds/book-admin-login-bg-1920x1200.webp") center top / cover fixed;
}

body.book-admin-body {
    background: url("/assets/images/book-store/backgrounds/book-admin-dashboard-bg-1920x1200.webp") center top / cover fixed;
}

.book-admin-sidebar {
    border-color: #9c612c;
    background: rgba(55, 10, 10, .95);
}

.book-admin-sidebar nav a {
    display: flex;
    align-items: center;
    gap: 9px;
    border-color: rgba(211, 160, 74, .35);
    background: rgba(103, 31, 24, .72);
}

.book-admin-sidebar nav img {
    width: 30px;
    height: 30px;
    object-fit: contain;
}

.book-admin-topbar {
    border-color: rgba(211, 160, 74, .45);
    background: rgba(55, 10, 10, .9);
}

.book-admin-metric,
.book-admin-content .book-form-panel,
.book-admin-content .book-table-panel {
    color: #4d2619;
    background: #f4e3bd url("/assets/images/book-store/ui/book-admin-panel-1500x1000.webp") center / 100% 100% no-repeat;
}

@media (max-width: 920px) {
    .book-content {
        padding: 18px;
    }
}

@media (max-width: 620px) {
    .book-category-links {
        grid-template-columns: 1fr;
    }

    .book-content {
        padding: 12px;
    }

    .book-product-grid {
        grid-template-columns: 1fr;
    }
}

.book-content .book-empty {
    font-size: 0;
    color: transparent;
}

/* v6 layout corrections */
.book-content {
    background:
        radial-gradient(circle at 12% 8%, rgba(183, 131, 61, .13), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(126, 70, 30, .1), transparent 30%),
        linear-gradient(180deg, #f7e9c9, #efdbb0);
}

.book-search-form {
    display: flex;
    flex-direction: column;
    gap: .65rem;
    margin-bottom: 1rem;
    padding: 1rem;
}

.book-search-form label {
    position: static;
    display: block;
    margin: 0;
    padding: 0;
    color: #f1d99f;
    line-height: 1.4;
}

.book-search-form__controls {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: stretch;
    gap: .65rem;
}

.book-search-form input,
.book-search-form button {
    position: static;
    min-height: 48px;
    margin: 0;
}

.book-category-hero {
    display: block;
    margin: 0 0 1.25rem;
}

.book-category-hero__image {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
}

.book-section-heading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .25rem;
    width: 100%;
    margin: 1.5rem 0 1.25rem;
    text-align: center;
}

.book-section-heading__row {
    display: grid;
    grid-template-columns: minmax(70px, 1fr) auto minmax(70px, 1fr);
    align-items: center;
    gap: 1.4rem;
    width: min(900px, 100%);
}

.book-section-heading__row h2 {
    position: static;
    margin: 0;
    padding: 0;
    color: #6e301d;
    font-size: clamp(1.35rem, 2vw, 1.9rem);
    line-height: 1.15;
    white-space: nowrap;
}

.book-section-heading__line {
    display: block;
    height: 1px;
    background: linear-gradient(90deg, transparent, #b7833d 35%, #b7833d);
}

.book-section-heading__line:last-child {
    background: linear-gradient(90deg, #b7833d, #b7833d 65%, transparent);
}

.book-section-heading > p,
.book-search-summary {
    position: static;
    margin: 0;
    padding: 0;
    color: #805436;
    line-height: 1.2;
    text-align: center;
}

.book-featured-section {
    padding-top: 16px;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.book-login-card {
    position: static;
    width: min(900px, calc(100% - 2rem));
    margin: 2.5rem auto;
    padding: 2.5rem;
    color: #4d2619;
    background: #f3e1b9 url('/assets/images/book-store/ui-fix-v2/book-login-panel-blank-v2.webp') center / 100% 100% no-repeat;
}

.book-login-card__header,
.book-login-form,
.book-form-field,
.book-captcha-row,
.book-login-actions {
    position: static;
}

.book-login-card__header {
    margin-bottom: 1.5rem;
    text-align: center;
}

.book-login-card__header h1,
.book-login-card__header p {
    margin: 0;
}

.book-login-card__header p {
    margin-top: .4rem;
    color: #805436;
}

.book-login-form {
    display: grid;
    gap: 1.2rem;
}

.book-form-field {
    display: grid;
    gap: .45rem;
}

.book-form-field label {
    position: static;
    display: block;
    margin: 0;
    color: #5d2a1c;
    line-height: 1.35;
}

.book-form-field input {
    position: static;
    width: 100%;
    min-height: 52px;
    margin: 0;
    padding: .7rem .9rem;
    box-sizing: border-box;
}

.book-login-card .book-captcha-row {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr) auto;
    align-items: center;
    gap: .8rem;
}

.book-login-card .book-captcha-row img {
    display: block;
    width: 220px;
    height: 84px;
    object-fit: contain;
}

.book-captcha-refresh {
    min-height: 52px;
    white-space: nowrap;
}

.book-login-validation {
    min-height: 0;
}

.book-login-card .book-validation {
    color: #8c1f1f;
}

.book-login-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.book-login-actions .book-btn,
.book-register-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    text-align: center;
}

/* Book member cart and login layout refinements. */
.book-table-head h1 {
    flex: 1 1 auto;
    min-width: 0;
}

.book-table-head > .book-btn,
.book-order-links > .book-btn {
    width: auto;
    flex: 0 0 auto;
    padding-inline: 1.25rem;
}

.book-login-card {
    box-sizing: border-box;
    min-height: 760px;
    padding: 84px 110px;
}

.book-login-card__header h1,
.book-login-card__header p,
.book-login-card .book-form-field label {
    color: #f5d38b;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(48, 10, 8, .9);
}

.book-login-card__header p {
    color: #eac77d;
}

.book-login-form {
    width: min(440px, 100%);
    margin: 0 auto;
}

.book-login-card .book-form-field input {
    width: 100%;
    min-height: 46px;
}

.book-login-card .book-captcha-row {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: .65rem;
}

.book-login-card .book-captcha-row img {
    width: 170px;
    height: 68px;
}

.book-login-card .book-captcha-row .book-captcha-refresh {
    grid-column: 1 / -1;
    justify-self: center;
    width: auto;
    min-height: 42px;
    padding-inline: 1.15rem;
}

/* Keep registration content inside the crimson panel and use readable gold text. */
body.book-register-page .book-form-panel,
body.book-register-agreement-page .book-form-panel {
    box-sizing: border-box;
    width: min(1000px, calc(100% - 2rem));
    margin: 2.5rem auto;
    padding: 200px 120px 80px;
    color: #f5d38b;
}

body.book-register-page .book-form-panel {
    min-height: 900px;
}

body.book-register-agreement-page .book-form-panel {
    min-height: 760px;
}

body.book-register-page .book-form-panel > h1,
body.book-register-agreement-page .book-form-panel > h1 {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

body.book-register-page .book-form-panel .book-detail-text,
body.book-register-agreement-page .book-form-panel .book-detail-text,
body.book-register-page .book-form-panel .book-field,
body.book-register-agreement-page .book-form-panel .book-field,
body.book-register-page .book-form-panel .book-field label,
body.book-register-agreement-page .book-form-panel .book-field label {
    color: #f5d38b;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(48, 10, 8, .9);
}

body.book-register-page .book-form-panel > form,
body.book-register-agreement-page .book-form-panel > form {
    width: min(640px, 100%);
    margin-inline: auto;
}

body.book-register-page .book-form-panel .book-input {
    min-height: 46px;
}

@media (max-width: 920px) {
    .book-store-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .book-store-layout .book-sidebar {
        width: 100%;
    }
}

@media (max-width: 720px) {
    .book-login-card {
        min-height: 0;
        padding: 1.35rem;
        background: #f3e1b9;
        border: 3px double #c29554;
        border-radius: 18px;
    }

    .book-login-card .book-captcha-row,
    .book-login-actions {
        grid-template-columns: 1fr;
    }

    .book-login-card .book-captcha-row img {
        width: min(220px, 100%);
    }

    body.book-register-page .book-form-panel,
    body.book-register-agreement-page .book-form-panel {
        min-height: 0;
        padding: 1.5rem;
        background: #5d201b;
    }

    body.book-register-page .book-form-panel > h1,
    body.book-register-agreement-page .book-form-panel > h1 {
        position: static;
        width: auto;
        height: auto;
        margin: 0 0 1rem;
        overflow: visible;
        clip: auto;
        white-space: normal;
    }
}

@media (max-width: 480px) {
    .book-search-form__controls {
        grid-template-columns: 1fr;
    }

    .book-section-heading__row {
        grid-template-columns: minmax(30px, 1fr) auto minmax(30px, 1fr);
        gap: .65rem;
    }
}