:root {
    --sec7-primary: #ecbc6d;
    --sec7-secondary: #ecbc6d;
    --sec7-accent: #e67e22;
    --sec7-light: #f8f9fa;
    --sec7-dark: #1c2833;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    background-color: #e67e22;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar-sec7 {
    background-color: var(--sec7-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.navbar-sec7 .navbar-brand {
    color: #fff;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.02em;
}

.navbar-sec7 .navbar-brand:hover {
    color: var(--sec7-accent);
}

.navbar-sec7 .nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    transition: color 0.2s;
}

.navbar-sec7 .nav-link:hover,
.navbar-sec7 .nav-link.active {
    color: #fff;
}

.btn-sec7 {
    background-color: var(--sec7-secondary);
    border-color: var(--sec7-secondary);
    color: #fff;
}

.btn-sec7:hover {
    background-color: var(--sec7-primary);
    border-color: var(--sec7-primary);
    color: #fff;
}

.btn-accent {
    background-color: var(--sec7-accent);
    border-color: var(--sec7-accent);
    color: #fff;
}

.btn-accent:hover {
    background-color: #d35400;
    border-color: #d35400;
    color: #fff;
}

.card-book {
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
    border-radius: 0.75rem;
    overflow: hidden;
}

.card-book:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card-book .card-icon {
    width: 100%;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
}

.card-book .card-icon.libro {
    background: linear-gradient(135deg, #1a5276, #2980b9);
    color: #fff;
}

.card-book .card-icon.audiolibro {
    background: linear-gradient(135deg, #e67e22, #f39c12);
    color: #fff;
}

.badge-libro {
    background-color: var(--sec7-secondary);
    color: #fff;
}

.badge-audiolibro {
    background-color: var(--sec7-accent);
    color: #fff;
}

.hero-section {
    background: linear-gradient(135deg, var(--sec7-primary), var(--sec7-secondary));
    color: #0c0c0c;
    padding: 3rem 0;
}

.footer-sec7 {
    background-color: var(--sec7-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 1.5rem 0;
    margin-top: auto;
}

.is-invalid-custom {
    border-color: #dc3545;
}

.invalid-feedback-custom {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: #dc3545;
}

.modal-upload .modal-header {
    background-color: var(--sec7-primary);
    color: #fff;
}

.modal-upload .btn-close {
    filter: invert(1);
}

.file-upload-area {
    border: 2px dashed #ccc;
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.3s, background-color 0.3s;
}

.file-upload-area:hover,
.file-upload-area.dragover {
    border-color: var(--sec7-secondary);
    background-color: #eaf2f8;
}

.file-upload-area.has-file {
    border-color: #28a745;
    background-color: #e8f8e8;
}

.pdf-card-thumb {
    padding: 0 1.25rem;
    margin-bottom: 0.5rem;
}

.pdf-thumbnail {
    position: relative;
    width: 100%;
    min-height: 140px;
    border-radius: 0.75rem;
    border: 1px solid #e1e5eb;
    background: #fff;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdf-thumbnail canvas {
    width: 100%;
    height: auto;
    display: block;
}

.pdf-thumbnail-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    color: #6c7a8a;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.7rem;
}

.pdf-thumbnail.is-rendered .pdf-thumbnail-placeholder {
    opacity: 0;
}

.pdf-thumbnail.table-thumbnail {
    min-height: 75px;
    max-width: 140px;
    margin: 0 auto;
}

.pdf-thumbnail.table-thumbnail canvas {
    max-height: 90px;
}

.page-shell {
    min-height: 100vh;
    background-color: #e67e22;
    display: flex;
    flex-direction: column;
}

.page-nav {
    box-shadow: 0 10px 25px rgba(11, 44, 80, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.page-main {
    flex: 1;
    padding: 2rem 0 1rem;
}

.page-content {
    width: min(1140px, 100%);
    margin: 0 auto;
    padding: 0 1rem 3rem;
}

.alerts-container {
    width: min(1140px, 100%);
}

.app-header-bar {
    background-color: #ecbc6d;
    border-bottom: 3px solid #0c0c0c;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.app-header-inner {
    max-width: 100%;
    padding: 0 1.5rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background-color: #ecbc6d;
    color: #0c0c0c;
}

.app-identity {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.app-escudo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.app-identity-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.app-school-name {
    color: #0c0c0c;
    font-weight: 700;
    letter-spacing: 0.02em;
    font-size: 0.95rem;
}

.app-panel-label {
    color: #0c0c0c;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 500;
    margin-top: 1px;
}

.app-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

.app-link {
    color: rgba(0, 0, 0, 0.9);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
    transition: background 0.2s;
}

.app-link:hover {
    background: rgba(255, 255, 255, 0.1);
}

.app-link.is-active {
    background: rgba(255, 255, 255, 0.2);
}

.app-user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #0c0c0c;
    font-size: 0.875rem;
    font-weight: 500;
}

.app-user-info .dropdown .btn {
    color: #020202;
    border-color: rgba(255, 255, 255, 0.2);
}

.app-user-info .dropdown .btn:hover {
    border-color: #000;
}

body:has(.admin-wrapper) {
    background-color: #e67e22;
}

body:has(.admin-wrapper) > nav.navbar-sec7,
body:has(.admin-wrapper) footer.footer-sec7 {
    display: none;
}

.admin-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.admin-header-bar {
    background-color: #ecbc6d;
    border-bottom: 3px solid #0c0c0c;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.admin-header-inner {
    max-width: 100%;
    padding: 0 1.5rem;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background-color: #ecbc6d;
    color: #0c0c0c;
}

.admin-identity {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}

.admin-escudo {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.12);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #0c0c0c;
    flex-shrink: 0;
}

.admin-identity-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.admin-school-name {
    color: #0c0c0c;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
}

.admin-panel-label {
    color: #0c0c0c;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 500;
    margin-top: 1px;
}

.admin-user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #0c0c0c;
    font-size: 0.875rem;
    font-weight: 500;
}

.admin-role-badge {
    background: #e67e22;
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 20px;
}

.admin-body {
    display: flex;
    flex: 1;
    min-height: 0;
}

.admin-sidebar {
    width: 240px;
    flex-shrink: 0;
    background: #fff;
    border-right: 1px solid #dde3ea;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: calc(100vh - 64px);
    position: sticky;
    top: 64px;
    height: calc(100vh - 64px);
    overflow-y: auto;
}

.admin-nav {
    padding: 1.25rem 0.75rem 1rem;
}

.admin-nav-section-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #8a96a3;
    padding: 0 0.75rem;
    margin-bottom: 0.35rem;
}

.admin-nav-list {
    list-style: none;
    padding: 0;
    margin: 0 0 0.5rem;
}

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.6rem 0.75rem;
    border-radius: 7px;
    font-size: 0.875rem;
    font-weight: 500;
    color: #3d4a58;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
    cursor: pointer;
    line-height: 1.4;
}

.admin-nav-link i {
    font-size: 1rem;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
    color: #7a8694;
    transition: color 0.15s;
}

.admin-nav-link:hover {
    background: #eef4fb;
    color: #1a5276;
}

.admin-nav-link:hover i {
    color: #1a5276;
}

.admin-nav-link.is-active {
    background: #1a5276;
    color: #fff;
    font-weight: 600;
}

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

.admin-nav-link.admin-nav-logout {
    color: #b04028;
}

.admin-nav-link.admin-nav-logout i {
    color: #b04028;
}

.admin-nav-link.admin-nav-logout:hover {
    background: #fdf0ed;
    color: #922c18;
}

.admin-nav-divider {
    height: 1px;
    background: #e8ecf0;
    margin: 0.75rem 0.75rem 0.875rem;
}

.admin-sidebar-footer {
    padding: 0.875rem 1.25rem;
    border-top: 1px solid #e8ecf0;
    font-size: 0.72rem;
    color: #9aa4af;
    font-weight: 500;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
}

.admin-main {
    flex: 1;
    min-width: 0;
    padding: 2rem 2.25rem;
    overflow-y: auto;
}

.admin-hamburger {
    display: none;
    background: rgba(255, 255, 255, 0.12);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    border-radius: 7px;
    color: #fff;
    width: 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s;
}

.admin-hamburger:hover {
    background: rgba(255, 255, 255, 0.22);
}

.admin-drawer-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 199;
    opacity: 0;
    transition: opacity 0.25s;
}

.admin-drawer-overlay.is-visible {
    display: block;
    opacity: 1;
}

.admin-page-header {
    margin-bottom: 1.75rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e67e22;
}

.admin-page-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #0d3b5e;
    margin: 0 0 0.2rem;
    letter-spacing: -0.01em;
}

.admin-page-subtitle {
    font-size: 0.875rem;
    color: #6b7a8a;
    margin: 0;
}

.admin-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.admin-stat-card {
    background: #fff;
    border: 1px solid #dde3ea;
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.admin-stat-icon.primary {
    background: #e8f0f8;
    color: #1a5276;
}

.admin-stat-icon.accent {
    background: #fdf0e6;
    color: #c0611a;
}

.admin-stat-icon.success {
    background: #e8f5ee;
    color: #1e7a45;
}

.admin-stat-icon.muted {
    background: #f0f2f5;
    color: #5a6474;
}

.admin-stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: #0d3b5e;
    line-height: 1;
    margin-bottom: 2px;
}

.admin-stat-label {
    font-size: 0.78rem;
    color: #7a8694;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.admin-table-card {
    background: #fff;
    border: 1px solid #dde3ea;
    border-radius: 10px;
    overflow: hidden;
}

.admin-table-card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #dde3ea;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.admin-table-card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #1a3a52;
    margin: 0;
}

.admin-table {
    width: 100%;
    margin: 0;
    font-size: 0.875rem;
}

.admin-table thead th {
    background: #f5f7fa;
    color: #5a6474;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid #dde3ea;
    border-top: none;
    white-space: nowrap;
}

.admin-table tbody td {
    padding: 0.875rem 1.25rem;
    vertical-align: middle;
    border-bottom: 1px solid #f0f2f5;
    color: #2d3a47;
}

.admin-table tbody tr:last-child td {
    border-bottom: none;
}

.admin-table tbody tr:hover td {
    background: #f8fafc;
}

.btn-admin-primary {
    background: #1a5276;
    border-color: #1a5276;
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.45rem 1rem;
    border-radius: 7px;
    transition: background 0.15s, border-color 0.15s;
}

.btn-admin-primary:hover {
    background: #0d3b5e;
    border-color: #0d3b5e;
    color: #fff;
}

.btn-admin-danger {
    background: #c0392b;
    border-color: #c0392b;
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.45rem 1rem;
    border-radius: 7px;
    transition: background 0.15s;
}

.btn-admin-danger:hover {
    background: #922c22;
    border-color: #922c22;
    color: #fff;
}

.admin-sidebar-drawer-header {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1rem 0.5rem 1.25rem;
    border-bottom: 1px solid #e8ecf0;
    margin-bottom: 0.5rem;
}

.admin-sidebar-drawer-title {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: #1a5276;
}

.admin-drawer-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: #7a8694;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 5px;
    line-height: 1;
    transition: background 0.15s, color 0.15s;
}

.admin-drawer-close:hover {
    background: #f0f2f5;
    color: #1a5276;
}

.hero-text-narrow {
    max-width: 600px;
    margin: 0 auto;
}

.hero-text-wide {
    max-width: 700px;
    margin: 0 auto;
}

.hero-form {
    margin: 0 auto;
}

.hero-form--books {
    max-width: 700px;
}

.hero-form--physical {
    max-width: 760px;
}

.sort-select {
    width: auto;
}

.pdf-preview-label {
    font-size: 0.65rem;
}

.text-clamp-60 {
    max-height: 60px;
    overflow: hidden;
}

.text-clamp-72 {
    max-height: 72px;
    overflow: hidden;
}

.card-actions-top {
    z-index: 2;
}

.section-icon-highlight {
    color: var(--sec7-primary);
}

.auth-title-icon {
    color: var(--sec7-accent);
}

.auth-title {
    color: var(--sec7-primary);
}

.login-page,
.login-page * {
    color: #000;
}

.profile-header {
    gap: 0.875rem;
}

.profile-back-btn,
.profile-action-btn {
    width: 100%;
}

.audio-hero {
    background:
        radial-gradient(circle at top left, rgba(236, 188, 109, 0.45), transparent 40%),
        linear-gradient(135deg, #17202a, #273746 55%, #3d566e);
    color: #fff;
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(23, 32, 42, 0.28);
}

.audio-cover {
    min-height: 100%;
    background: linear-gradient(135deg, #e67e22, #ecbc6d);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.audio-cover-badge {
    width: 180px;
    height: 180px;
    border-radius: 32px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.28);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4.5rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.audio-meta-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.72);
}

.audio-meta-value {
    font-size: 1rem;
    font-weight: 600;
}

.audio-player-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 1rem;
    padding: 1rem;
}

.audio-player-card audio {
    width: 100%;
}

.audio-player-label {
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.72);
}

.audio-detail-card {
    border: none;
    border-radius: 1rem;
}

.admin-table-icon-muted {
    font-size: 0.9rem;
}

.admin-book-title {
    color: #0d3b5e;
}

.admin-type-badge {
    font-weight: 600;
    font-size: 0.7rem;
}

.admin-type-badge--book {
    background: #e8f0f8;
    color: #1a5276;
}

.admin-type-badge--audio {
    background: #fdf0e6;
    color: #c0611a;
}

.admin-nowrap-muted {
    white-space: nowrap;
    color: #7a8694;
}

.admin-nowrap-actions {
    white-space: nowrap;
}

.admin-edit-btn-compact {
    font-size: 0.75rem;
    padding: 0.3rem 0.65rem;
    border-radius: 6px;
}

.admin-empty-cell {
    font-size: 0.875rem;
}

@media (max-width: 992px) {
    .app-header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .app-identity,
    .app-links,
    .app-user-info {
        width: 100%;
    }

    .app-links,
    .app-user-info {
        justify-content: flex-start;
    }

    .app-user-info .dropdown .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .admin-hamburger {
        display: flex;
    }

    .admin-school-name {
        font-size: 0.82rem;
    }

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

    .admin-main {
        padding: 1.25rem 1rem;
    }

    .admin-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        min-height: 100vh;
        z-index: 200;
        transform: translateX(-100%);
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: none;
        width: 270px;
    }

    .admin-sidebar.is-open {
        transform: translateX(0);
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.18);
    }

    .admin-sidebar-drawer-header {
        display: flex !important;
    }
}

@media (max-width: 576px) {
    .app-links .app-link {
        flex: 1 1 100%;
        text-align: center;
    }
}

@media (min-width: 576px) {
    .profile-back-btn,
    .profile-action-btn {
        width: auto;
    }
}