:root {
    --admin-paper: #f7f5ee;
    --admin-surface: #ffffff;
    --admin-surface-muted: #f1efe7;
    --admin-ink: #252735;
    --admin-ink-soft: #666a7b;
    --admin-brand: #47705b;
    --admin-brand-dark: #385c4a;
    --admin-sage: #81b29a;
    --admin-navy: #34374f;
    --admin-navy-deep: #292c40;
    --admin-gilt: #b08a2e;
    --admin-line: #e3ded0;
    --admin-danger: #a64848;
    --admin-danger-soft: #fff2ef;
    --admin-shadow: 0 16px 40px -30px rgba(37, 39, 53, .45);
    --admin-radius: 12px;
    --admin-sidebar-width: 268px;
}

.admin-body,
.admin-body * {
    box-sizing: border-box;
}

.admin-body {
    min-width: 320px;
    margin: 0;
    background: var(--admin-paper);
    color: var(--admin-ink);
    font-family: "Fira Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
}

.admin-body h1,
.admin-body h2,
.admin-body h3,
.admin-body h4,
.admin-body h5,
.admin-body h6 {
    color: var(--admin-ink);
    font-family: "Fraunces", Georgia, serif;
    font-weight: 500;
}

.admin-body a {
    color: var(--admin-brand);
}

.admin-body a:hover {
    color: var(--admin-brand-dark);
}

.admin-shell {
    display: grid;
    grid-template-columns: var(--admin-sidebar-width) minmax(0, 1fr);
    min-height: 100vh;
}

.admin-sidebar {
    position: sticky;
    top: 0;
    z-index: 1040;
    display: flex;
    flex-direction: column;
    width: var(--admin-sidebar-width);
    height: 100vh;
    overflow-y: auto;
    color: #fff;
    background:
        radial-gradient(circle at 20% 0, rgba(129, 178, 154, .18), transparent 30%),
        linear-gradient(180deg, var(--admin-navy) 0%, var(--admin-navy-deep) 100%);
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, .18) transparent;
}

.admin-brand {
    padding: 27px 24px 23px;
    border-bottom: 1px solid rgba(255, 255, 255, .09);
}

.admin-brand a {
    display: block;
}

.admin-brand img {
    display: block;
    width: auto;
    max-width: 154px;
    max-height: 44px;
}

.admin-brand span {
    display: block;
    margin-top: 9px;
    color: rgba(255, 255, 255, .52);
    font-size: .69rem;
    font-weight: 600;
    letter-spacing: .17em;
    text-transform: uppercase;
}

.admin-navigation {
    flex: 1 0 auto;
    padding: 18px 14px 24px;
}

.admin-nav-group + .admin-nav-group {
    margin-top: 21px;
}

.admin-nav-label {
    display: block;
    padding: 0 12px 7px;
    color: rgba(255, 255, 255, .42);
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.admin-nav-link {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 42px;
    margin: 2px 0;
    padding: 9px 12px;
    border-radius: 9px;
    color: rgba(255, 255, 255, .78) !important;
    font-size: .9rem;
    font-weight: 500;
    text-decoration: none !important;
    transition: color .15s ease, background .15s ease, transform .15s ease;
}

.admin-nav-link i {
    width: 22px;
    margin-right: 9px;
    color: var(--admin-sage);
    font-size: .95rem;
    text-align: center;
}

.admin-sidebar .admin-nav-link span {
    color: rgba(255, 255, 255, .78);
}

.admin-nav-link:hover {
    color: #fff !important;
    background: rgba(255, 255, 255, .07);
    transform: translateX(2px);
}

.admin-sidebar .admin-nav-link:hover span,
.admin-sidebar .admin-nav-link.is-active span {
    color: #fff;
}

.admin-nav-link.is-active {
    color: #fff !important;
    background: rgba(129, 178, 154, .18);
    box-shadow: inset 3px 0 0 var(--admin-sage);
}

.admin-nav-link.is-active i {
    color: #b9dac9;
}

.admin-sidebar-footer {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: auto 14px 18px;
    padding: 13px 14px;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 9px;
    color: rgba(255, 255, 255, .58);
    background: rgba(255, 255, 255, .04);
    font-size: .76rem;
}

.admin-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #89c7a5;
    box-shadow: 0 0 0 4px rgba(137, 199, 165, .11);
}

.admin-workspace {
    min-width: 0;
}

.admin-topbar {
    position: sticky;
    top: 0;
    z-index: 1020;
    display: flex;
    align-items: center;
    min-height: 72px;
    padding: 0 34px;
    border-bottom: 1px solid var(--admin-line);
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(12px);
}

.admin-menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    margin-right: 13px;
    padding: 0;
    border: 1px solid var(--admin-line);
    border-radius: 9px;
    color: var(--admin-ink);
    background: var(--admin-surface);
}

.admin-topbar__context {
    display: flex;
    flex-direction: column;
}

.admin-topbar__context span {
    color: var(--admin-ink-soft);
    font-size: .68rem;
    font-weight: 600;
    letter-spacing: .14em;
    line-height: 1.2;
    text-transform: uppercase;
}

.admin-topbar__context strong {
    margin-top: 3px;
    color: var(--admin-ink);
    font-size: .95rem;
    font-weight: 600;
}

.admin-topbar__actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.admin-topbar__link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 39px;
    padding: 8px 13px;
    border: 1px solid var(--admin-line);
    border-radius: 9px;
    color: var(--admin-ink-soft) !important;
    background: var(--admin-surface);
    font-size: .82rem;
    font-weight: 600;
    text-decoration: none !important;
}

.admin-topbar__link:hover {
    border-color: #cfc8b7;
    color: var(--admin-ink) !important;
    background: var(--admin-surface-muted);
}

.admin-topbar__link--logout {
    color: var(--admin-danger) !important;
}

.admin-main {
    min-height: calc(100vh - 72px);
    padding: 34px;
}

.admin-content {
    width: 100%;
    max-width: 1660px;
    margin: 0 auto;
}

.admin-page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 28px;
}

.admin-page-header h1,
.admin-content > h1,
.admin-content > h2 {
    margin: 0;
    color: var(--admin-ink);
    font-size: clamp(1.8rem, 3vw, 2.35rem);
    line-height: 1.12;
}

.admin-page-header p {
    max-width: 650px;
    margin: 8px 0 0;
    color: var(--admin-ink-soft);
    font-size: .96rem;
}

.admin-eyebrow {
    display: block;
    margin-bottom: 7px;
    color: var(--admin-brand);
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .17em;
    text-transform: uppercase;
}

.admin-metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.admin-metric-card {
    display: flex;
    align-items: center;
    min-width: 0;
    min-height: 133px;
    padding: 21px;
    border: 1px solid var(--admin-line);
    border-radius: var(--admin-radius);
    background: var(--admin-surface);
    box-shadow: var(--admin-shadow);
}

.admin-metric-icon {
    display: flex;
    flex: 0 0 45px;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    margin-right: 16px;
    border-radius: 11px;
    color: var(--admin-brand);
    background: #edf4ef;
    font-size: 1.05rem;
}

.admin-metric-card > div:last-child {
    min-width: 0;
}

.admin-metric-card span,
.admin-metric-card small {
    display: block;
    overflow: hidden;
    color: var(--admin-ink-soft);
    font-size: .73rem;
    line-height: 1.35;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-metric-card span {
    font-weight: 600;
    letter-spacing: .02em;
}

.admin-metric-card strong {
    display: block;
    margin: 3px 0 1px;
    color: var(--admin-ink);
    font-family: "Fraunces", Georgia, serif;
    font-size: 1.65rem;
    font-weight: 600;
    line-height: 1.1;
}

.admin-metric-card--warning {
    border-color: #efc9c3;
    background: var(--admin-danger-soft);
}

.admin-metric-card--warning .admin-metric-icon {
    color: var(--admin-danger);
    background: #f8dfda;
}

.admin-metric-card--warning strong {
    color: var(--admin-danger);
}

.admin-panel {
    overflow: hidden;
    border: 1px solid var(--admin-line);
    border-radius: var(--admin-radius);
    background: var(--admin-surface);
    box-shadow: var(--admin-shadow);
}

.admin-panel-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    padding: 24px 26px;
    border-bottom: 1px solid var(--admin-line);
}

.admin-panel-heading h2 {
    margin: 0;
    font-size: 1.42rem;
}

.admin-panel-heading p {
    margin: 5px 0 0;
    color: var(--admin-ink-soft);
    font-size: .86rem;
}

.admin-panel-badge {
    flex: 0 0 auto;
    padding: 6px 11px;
    border: 1px solid #d6e3da;
    border-radius: 20px;
    color: var(--admin-brand-dark);
    background: #f0f6f2;
    font-size: .72rem;
    font-weight: 600;
}

.admin-process-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: var(--admin-line);
}

.admin-process-card {
    display: grid;
    grid-template-columns: 38px minmax(0, 1fr) auto;
    align-items: center;
    gap: 13px;
    min-height: 91px;
    padding: 18px 24px;
    color: var(--admin-ink) !important;
    background: var(--admin-surface);
    text-decoration: none !important;
    transition: background .15s ease;
}

.admin-process-card:hover {
    background: #fafbf8;
}

.admin-process-card > i:first-child {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 9px;
    color: var(--admin-brand);
    background: #edf4ef;
}

.admin-process-card > i:last-child {
    color: #a1a493;
    transition: transform .15s ease;
}

.admin-process-card:hover > i:last-child {
    color: var(--admin-brand);
    transform: translateX(3px);
}

.admin-process-card strong,
.admin-process-card small {
    display: block;
}

.admin-process-card strong {
    font-size: .88rem;
    font-weight: 600;
}

.admin-process-card small {
    margin-top: 3px;
    color: var(--admin-ink-soft);
    font-size: .74rem;
}

.admin-content > h1,
.admin-content > h2,
.admin-content > .bordered-heading {
    display: block;
    width: auto;
    margin-bottom: 22px;
    padding: 0;
    border: 0;
    text-transform: none;
}

.admin-content > h1::before,
.admin-content > h2::before,
.admin-content > .bordered-heading::before {
    display: block;
    margin-bottom: 7px;
    color: var(--admin-brand);
    font-family: "Fira Sans", sans-serif;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    content: "Administración";
}

.admin-content > form,
.admin-content > .book-description {
    margin-top: 22px;
    padding: 26px;
    border: 1px solid var(--admin-line);
    border-radius: var(--admin-radius);
    background: var(--admin-surface);
    box-shadow: var(--admin-shadow);
}

.admin-content .book-description {
    border-color: var(--admin-line);
    border-radius: var(--admin-radius);
    background: var(--admin-surface);
}

.admin-content .form-group label,
.admin-content label {
    color: var(--admin-ink);
    font-size: .78rem;
    font-weight: 600;
}

.admin-content .form-control,
.admin-content .custom-select {
    min-height: 43px;
    border: 1px solid #d9d4c7;
    border-radius: 8px;
    color: var(--admin-ink);
    background-color: #fff;
    font-family: "Fira Sans", sans-serif;
    font-size: .9rem;
}

.admin-content textarea.form-control {
    min-height: 130px;
    line-height: 1.55;
}

.admin-content .form-control:focus,
.admin-content .custom-select:focus {
    border-color: var(--admin-sage);
    box-shadow: 0 0 0 .18rem rgba(129, 178, 154, .18);
}

.admin-content .form-control:disabled,
.admin-content .form-control[readonly] {
    color: #76796f;
    background: var(--admin-surface-muted);
}

.admin-body .btn {
    border-radius: 8px;
    font-family: "Fira Sans", sans-serif;
    font-size: .83rem;
    font-weight: 600;
    box-shadow: none;
}

.admin-body .btn-info,
.admin-body .btn-primary {
    border-color: var(--admin-brand);
    color: #fff;
    background: var(--admin-brand);
}

.admin-body .btn-info:hover,
.admin-body .btn-info:focus,
.admin-body .btn-primary:hover,
.admin-body .btn-primary:focus {
    border-color: var(--admin-brand-dark);
    color: #fff;
    background: var(--admin-brand-dark);
}

.admin-body .btn-default,
.admin-body .btn-secondary {
    border-color: var(--admin-navy);
    color: #fff;
    background: var(--admin-navy);
}

.admin-body .btn-outline-secondary {
    border-color: #c9c4b8;
    color: var(--admin-ink-soft);
    background: transparent;
}

.admin-body .btn-outline-secondary:hover {
    border-color: var(--admin-ink-soft);
    color: #fff;
    background: var(--admin-ink-soft);
}

.admin-body .btn-danger {
    border-color: var(--admin-danger);
    background: var(--admin-danger);
}

.admin-body .btn-warning {
    border-color: #e9d79e;
    color: #66521d;
    background: #fff3c9;
}

.admin-body .badge {
    padding: .38em .62em;
    border-radius: 5px;
    font-size: .72rem;
    font-weight: 600;
}

.admin-body .badge-info,
.admin-body .badge-success {
    color: var(--admin-brand-dark);
    background: #e5f1e9;
}

.admin-body .badge-warning {
    color: #735d1d;
    background: #fff0bd;
}

.admin-table-wrap {
    width: 100%;
    margin-top: 22px;
    overflow: auto;
    border: 1px solid var(--admin-line);
    border-radius: var(--admin-radius);
    background: var(--admin-surface);
    box-shadow: var(--admin-shadow);
}

.admin-table-wrap .table {
    width: 100%;
    min-width: 840px;
    margin: 0 !important;
    background: transparent !important;
}

.admin-table-wrap .table th {
    position: sticky;
    top: 0;
    z-index: 2;
    padding: 13px 14px;
    border-top: 0;
    border-bottom: 1px solid var(--admin-line);
    color: var(--admin-ink-soft);
    background: #f5f3ed !important;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .075em;
    text-transform: uppercase;
    white-space: nowrap;
}

.admin-table-wrap .table td {
    padding: 13px 14px;
    border-top: 1px solid #eeeae0;
    color: var(--admin-ink);
    font-size: .8rem;
    vertical-align: middle;
}

.admin-table-wrap .table-striped tbody tr:nth-of-type(odd) {
    background: #fbfaf7;
}

.admin-table-wrap .table tbody tr:hover {
    background: #f5f8f4;
}

.admin-table-wrap .table .bg-warning,
.admin-table-wrap .table tr.bg-warning {
    background: #fff7df !important;
}

.admin-table-wrap img {
    width: auto;
    max-width: 58px;
    max-height: 76px;
    border: 1px solid var(--admin-line);
    border-radius: 5px;
    object-fit: cover;
}

.admin-table-wrap p {
    font-size: .8rem;
}

.admin-stats-grid > [class*="col-"] {
    margin-bottom: 20px;
}

.admin-stats-grid h4 {
    min-height: 2.4em;
    margin: 0 0 10px;
    font-family: "Fira Sans", sans-serif;
    font-size: .87rem;
    font-weight: 700;
    line-height: 1.35;
}

.admin-table-wrap--compact {
    margin-top: 0;
    overflow-x: hidden;
    border-radius: 9px;
    box-shadow: none;
}

.admin-table-wrap--compact .table {
    min-width: 0;
    table-layout: fixed;
}

.admin-table-wrap--compact .table th,
.admin-table-wrap--compact .table td {
    padding: 9px 11px;
    font-size: .73rem;
    line-height: 1.25;
}

.admin-table-wrap--compact .table th:first-child,
.admin-table-wrap--compact .table td:first-child {
    overflow: hidden;
    text-overflow: ellipsis;
}

.admin-table-wrap--compact .table th:last-child,
.admin-table-wrap--compact .table td:last-child {
    width: 38%;
    text-align: right;
    white-space: nowrap;
}

.admin-content .alert {
    border: 1px solid var(--admin-line);
    border-radius: 9px;
}

.admin-content .row > [class*="col-"] > .book-description {
    height: 100%;
    box-shadow: var(--admin-shadow);
}

.admin-content canvas {
    max-width: 100%;
}

.admin-sidebar-backdrop {
    display: none;
}

.admin-guest {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 32px 18px;
    background:
        radial-gradient(circle at 14% 16%, rgba(129, 178, 154, .17), transparent 28%),
        radial-gradient(circle at 88% 84%, rgba(176, 138, 46, .12), transparent 26%),
        var(--admin-paper);
}

.admin-login-card {
    width: 100%;
    max-width: 470px;
    padding: 38px;
    border: 1px solid var(--admin-line);
    border-radius: 16px;
    background: rgba(255, 255, 255, .97);
    box-shadow: 0 28px 80px -42px rgba(37, 39, 53, .65);
}

.admin-login-brand {
    display: inline-block;
    margin-bottom: 34px;
}

.admin-login-brand img {
    width: auto;
    max-width: 180px;
    max-height: 60px;
}

.admin-login-copy h1 {
    margin: 0;
    font-size: 2rem;
}

.admin-login-copy p {
    margin: 11px 0 28px;
    color: var(--admin-ink-soft);
    font-size: .92rem;
    line-height: 1.55;
}

.admin-login-card form {
    margin: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
}

.admin-login-card label {
    font-size: .78rem;
    font-weight: 600;
}

.admin-input-icon {
    position: relative;
}

.admin-input-icon > i {
    position: absolute;
    top: 50%;
    left: 15px;
    z-index: 1;
    color: #929589;
    transform: translateY(-50%);
}

.admin-input-icon .form-control {
    min-height: 50px;
    padding-left: 42px;
    border: 1px solid #d9d4c7;
    border-radius: 9px;
}

.admin-login-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 25px;
    padding-top: 21px;
    border-top: 1px solid var(--admin-line);
    color: var(--admin-ink-soft);
    font-size: .74rem;
}

@media (max-width: 1199.98px) {
    .admin-metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991.98px) {
    .admin-shell {
        display: block;
    }

    .admin-sidebar {
        position: fixed;
        left: 0;
        width: min(var(--admin-sidebar-width), calc(100vw - 54px));
        transform: translateX(-105%);
        transition: transform .2s ease;
    }

    .admin-nav-open {
        overflow: hidden;
    }

    .admin-nav-open .admin-sidebar {
        transform: translateX(0);
    }

    .admin-menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .admin-sidebar-backdrop {
        position: fixed;
        inset: 0;
        z-index: 1030;
        border: 0;
        background: rgba(30, 32, 45, .5);
    }

    .admin-nav-open .admin-sidebar-backdrop {
        display: block;
    }
}

@media (max-width: 767.98px) {
    .admin-topbar {
        min-height: 64px;
        padding: 0 16px;
    }

    .admin-topbar__context span {
        display: none;
    }

    .admin-topbar__context strong {
        margin: 0;
        font-size: .86rem;
    }

    .admin-topbar__link {
        width: 39px;
        padding: 0;
        justify-content: center;
    }

    .admin-topbar__link span {
        display: none;
    }

    .admin-main {
        min-height: calc(100vh - 64px);
        padding: 24px 16px;
    }

    .admin-page-header {
        align-items: flex-start;
    }

    .admin-page-header h1,
    .admin-content > h1,
    .admin-content > h2 {
        font-size: 1.75rem;
    }

    .admin-metric-grid {
        grid-template-columns: 1fr;
    }

    .admin-metric-card {
        min-height: 108px;
    }

    .admin-process-grid {
        grid-template-columns: 1fr;
    }

    .admin-panel-heading {
        padding: 21px;
    }

    .admin-process-card {
        padding: 17px 20px;
    }

    .admin-content > form,
    .admin-content > .book-description {
        padding: 20px;
    }

    .admin-login-card {
        padding: 30px 24px;
    }
}

@media (max-width: 479.98px) {
    .admin-page-header {
        display: block;
    }

    .admin-page-header > .btn {
        margin-top: 18px;
    }

    .admin-panel-badge {
        display: none;
    }

    .admin-login-copy h1 {
        font-size: 1.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .admin-sidebar,
    .admin-nav-link,
    .admin-process-card,
    .admin-process-card > i:last-child {
        transition: none;
    }
}