html, body {
    min-height: 100%;
}

body {
    background:
        radial-gradient(circle at top left, rgba(8, 145, 178, 0.18), transparent 28%),
        radial-gradient(circle at top right, rgba(16, 185, 129, 0.14), transparent 26%),
        linear-gradient(180deg, #06111f 0%, #0b1728 48%, #101b2f 100%);
    color: #e5eef7;
}

.dashboard-shell {
    min-height: 100vh;
}

.dashboard-sidebar {
    background: rgba(7, 16, 31, 0.92);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.24);
}

.dashboard-sidebar-inner {
    height: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
}

.dashboard-brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.brand-badge {
    width: 3rem;
    height: 3rem;
    border-radius: 1rem;
    display: grid;
    place-items: center;
    font-weight: 800;
    color: #04111d;
    background: linear-gradient(135deg, #67e8f9, #34d399);
    box-shadow: 0 10px 30px rgba(52, 211, 153, 0.28);
}

.brand-label {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.brand-subtitle,
.dashboard-user-label,
.dashboard-eyebrow {
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: rgba(226, 232, 240, 0.68);
}

.dashboard-nav {
    display: grid;
    gap: 0.65rem;
}

.dashboard-nav-link {
    display: block;
    text-decoration: none;
    color: #dbe7f3;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 1rem;
    padding: 0.9rem 1rem;
    font-weight: 600;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.dashboard-nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.07);
    transform: translateX(2px);
}

.dashboard-nav-link.active {
    color: #04111d;
    background: linear-gradient(135deg, #67e8f9, #34d399);
    border-color: transparent;
    box-shadow: 0 12px 26px rgba(103, 232, 249, 0.18);
}

.dashboard-user-card {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.dashboard-user-name {
    margin-top: 0.55rem;
    font-size: 1rem;
    font-weight: 700;
}

.dashboard-user-email {
    font-size: 0.875rem;
    color: rgba(226, 232, 240, 0.75);
}

.dashboard-content {
    min-height: 100vh;
}

.dashboard-header {
    padding: 1.5rem 1.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(6, 17, 31, 0.58);
    backdrop-filter: blur(16px);
}

.dashboard-title {
    font-size: 1.35rem;
    font-weight: 800;
}

.dashboard-main {
    padding: 1.5rem;
}

.dashboard-alert {
    border-radius: 1rem;
}

.btn-accent {
    border: none;
    background: linear-gradient(135deg, #67e8f9, #34d399);
    color: #04111d;
    font-weight: 700;
    box-shadow: 0 12px 26px rgba(103, 232, 249, 0.16);
}

.btn-accent:hover,
.btn-accent:focus {
    color: #04111d;
    filter: brightness(0.97);
}

.dashboard-panel,
.dashboard-card {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.5rem;
    background: rgba(10, 21, 38, 0.82);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
}

.dashboard-hero {
    padding: 1.6rem;
}

.dashboard-kpi {
    height: 100%;
}

.dashboard-kpi-value {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.dashboard-muted {
    color: rgba(226, 232, 240, 0.72);
}

.dashboard-table-wrap {
    overflow: hidden;
    border-radius: 1.5rem;
}

.table-dashboard {
    margin-bottom: 0;
    color: #e5eef7;
}

.table-dashboard thead th {
    background: rgba(255, 255, 255, 0.04);
    color: rgba(226, 232, 240, 0.78);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.table-dashboard td,
.table-dashboard th {
    border-color: rgba(255, 255, 255, 0.06) !important;
    vertical-align: middle;
}

.student-form-card {
    padding: 1.5rem;
}

.form-control, .form-select {
    background-color: rgba(4, 17, 29, 0.9);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    padding: 0.85rem 1rem;
}

.form-control:focus, .form-select:focus {
    border-color: #67e8f9;
    box-shadow: 0 0 0 0.2rem rgba(103, 232, 249, 0.18);
    background-color: rgba(4, 17, 29, 0.97);
    color: #fff;
}

.form-label {
    color: #dbe7f3;
    font-weight: 600;
}

.pagination .page-link {
    background-color: rgba(255, 255, 255, 0.04);
    color: #dbe7f3;
    border-color: rgba(255, 255, 255, 0.08);
}

.pagination .page-item.active .page-link {
    background: linear-gradient(135deg, #67e8f9, #34d399);
    border-color: transparent;
    color: #04111d;
}

.dashboard-topbar {
    background: rgba(7, 16, 31, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 991.98px) {
    .dashboard-sidebar-inner {
        min-height: auto;
    }

    .dashboard-main,
    .dashboard-header {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* Bookstore dashboard theme */
:root {
    --paper: #f7f3ec;
    --paper-deep: #eee7db;
    --ink: #272521;
    --muted-ink: #766f66;
    --terracotta: #b8553f;
    --terracotta-dark: #963f31;
    --sage: #7f9273;
    --line: #ddd4c7;
}

body {
    background: var(--paper);
    color: var(--ink);
    font-family: 'DM Sans', sans-serif;
}

.dashboard-sidebar {
    background: #ebe4d8;
    border-right: 1px solid var(--line);
    box-shadow: none;
}

.dashboard-sidebar-inner {
    padding: 1.75rem 1.25rem;
}

.brand-badge {
    width: 2.8rem;
    height: 2.8rem;
    border-radius: 50%;
    color: #fffaf3;
    background: var(--terracotta);
    box-shadow: none;
    font-size: 0.82rem;
}

.brand-label,
.dashboard-heading,
.shop-section-heading h2 {
    font-family: 'Playfair Display', serif;
}

.brand-label {
    color: var(--ink);
    font-size: 1.05rem;
}

.brand-subtitle,
.dashboard-user-label,
.dashboard-eyebrow {
    color: var(--muted-ink);
    letter-spacing: 0.16em;
}

.dashboard-nav {
    gap: 0.25rem;
}

.dashboard-nav-link {
    color: var(--muted-ink);
    background: transparent;
    border: 0;
    border-radius: 0.45rem;
    padding: 0.75rem 0.8rem;
    font-weight: 600;
}

.dashboard-nav-link:hover {
    color: var(--ink);
    background: rgba(184, 85, 63, 0.08);
    transform: none;
}

.dashboard-nav-link.active {
    color: var(--terracotta-dark);
    background: #f8eee5;
    box-shadow: none;
}

.sidebar-note {
    margin-top: auto;
    padding: 1rem;
    border-radius: 0.6rem;
    background: var(--sage);
    color: #fffaf3;
}

.sidebar-note-icon {
    font-size: 1.3rem;
}

.sidebar-note p {
    margin: 0.7rem 0 0;
    font-family: 'Playfair Display', serif;
    font-size: 1rem;
    line-height: 1.25;
}

.dashboard-user-card {
    margin-top: 1rem;
    padding: 1rem 0.8rem 0;
    border: 0;
    border-top: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
}

.dashboard-user-name {
    color: var(--ink);
}

.dashboard-user-email {
    color: var(--muted-ink);
    overflow-wrap: anywhere;
}

.dashboard-content {
    background: var(--paper);
}

.dashboard-header {
    padding: 1.35rem 2.5rem;
    border-bottom: 1px solid var(--line);
    background: rgba(247, 243, 236, 0.9);
}

.dashboard-title {
    color: var(--ink);
    font-family: 'Playfair Display', serif;
    font-size: 1.45rem;
}

.dashboard-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2.5rem;
}

.btn-accent,
.shop-primary-action {
    border: 0;
    background: var(--terracotta);
    color: #fffaf3;
    font-weight: 700;
}

.btn-accent:hover,
.btn-accent:focus,
.shop-primary-action:hover {
    background: var(--terracotta-dark);
    color: #fffaf3;
}

.dashboard-topbar {
    background: var(--paper);
    border-bottom: 1px solid var(--line);
}

.dashboard-topbar .navbar-brand {
    color: var(--ink);
    font-family: 'Playfair Display', serif;
}

.dashboard-topbar .btn-outline-dark {
    border-color: var(--line);
    color: var(--ink);
}

.shop-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 250px;
    padding: 2.5rem 3rem;
    overflow: hidden;
    border-radius: 0.75rem;
    background: #d8e0d0;
}

.shop-hero .dashboard-eyebrow {
    color: var(--sage);
}

.dashboard-heading {
    max-width: 560px;
    margin: 0.45rem 0 0.65rem;
    color: var(--ink);
    font-size: clamp(2rem, 4vw, 3.35rem);
    line-height: 1.05;
}

.dashboard-copy {
    margin-bottom: 1.35rem;
    color: var(--muted-ink);
}

.shop-primary-action {
    display: inline-flex;
    gap: 1rem;
    align-items: center;
    padding: 0.75rem 1rem;
    border-radius: 0.35rem;
    text-decoration: none;
}

.hero-mark {
    display: grid;
    place-content: center;
    width: 175px;
    height: 175px;
    margin-right: 4%;
    border: 1px solid rgba(39, 37, 33, 0.35);
    border-radius: 50%;
    color: var(--terracotta-dark);
    transform: rotate(-10deg);
    text-align: center;
}

.hero-mark span,
.hero-mark strong {
    display: block;
    font-family: 'Playfair Display', serif;
    line-height: 0.9;
}

.hero-mark span { font-size: 1rem; letter-spacing: 0.2em; }
.hero-mark strong { font-size: 2.3rem; }

.shop-section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    margin: 2.6rem 0 1.1rem;
}

.shop-section-heading .dashboard-eyebrow {
    margin-bottom: 0.25rem;
}

.shop-section-heading h2 {
    margin: 0;
    color: var(--ink);
    font-size: 1.9rem;
}

.shop-section-heading a,
.shop-caption {
    color: var(--terracotta-dark);
    font-size: 0.9rem;
    font-weight: 700;
    text-decoration: none;
}

.book-category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.book-category {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 145px;
    padding: 1.2rem;
    border-radius: 0.55rem;
    color: var(--ink);
    text-decoration: none;
    transition: transform 0.2s ease;
}

.book-category:hover {
    color: var(--ink);
    transform: translateY(-3px);
}

.book-category span {
    color: rgba(39, 37, 33, 0.55);
    font-size: 0.75rem;
    font-weight: 700;
}

.book-category strong {
    font-family: 'Playfair Display', serif;
    font-size: 1.45rem;
}

.book-category small {
    color: rgba(39, 37, 33, 0.7);
}

.category-fiction { background: #e9c7b4; }
.category-mind { background: #e4d6b8; }
.category-children { background: #c7d5c1; }

.featured-heading {
    margin-bottom: 1rem;
}

.dashboard-book-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.dashboard-book-card {
    display: block;
    color: var(--ink);
    text-decoration: none;
}

.dashboard-book-cover {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    aspect-ratio: 0.72;
    padding: 1rem;
    border-radius: 0.25rem;
    color: #fffaf3;
    box-shadow: 5px 6px 0 rgba(39, 37, 33, 0.08);
}

.dashboard-book-cover small { font-size: 0.58rem; letter-spacing: 0.14em; }
.dashboard-book-cover strong { font-family: 'Playfair Display', serif; font-size: 1.35rem; line-height: 1.05; }
.dashboard-book-cover em { font-size: 0.65rem; font-style: normal; }
.cover-orange { background: #c26342; }
.cover-blue { background: #547583; }
.cover-yellow { background: #c79d43; }
.cover-green { background: #718b74; }

.dashboard-book-card > span:last-child {
    display: block;
    padding-top: 0.8rem;
}

.dashboard-book-card > span:last-child strong,
.dashboard-book-card > span:last-child small {
    display: block;
}

.dashboard-book-card > span:last-child strong { line-height: 1.25; }
.dashboard-book-card > span:last-child small { margin-top: 0.25rem; color: var(--muted-ink); }

@media (max-width: 991.98px) {
    .dashboard-main { padding: 1.25rem; }
    .shop-hero { padding: 2rem; }
    .hero-mark { width: 130px; height: 130px; margin-right: 0; }
    .hero-mark strong { font-size: 1.75rem; }
}

@media (max-width: 767.98px) {
    .shop-hero { min-height: 0; padding: 1.5rem; }
    .hero-mark { display: none; }
    .book-category-grid,
    .dashboard-book-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 479.98px) {
    .book-category-grid,
    .dashboard-book-grid { grid-template-columns: 1fr; }
    .shop-section-heading { margin-top: 2rem; }
}

.crud-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
}

.crud-heading.compact { margin-bottom: 1.25rem; }
.crud-heading h1 { margin: 0.35rem 0 0; color: var(--ink); font-family: 'Playfair Display', serif; font-size: 2.35rem; }
.crud-heading p:not(.dashboard-eyebrow) { margin: 0.45rem 0 0; color: var(--muted-ink); }

.book-admin-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
}

.book-admin-card {
    display: flex;
    min-width: 0;
    padding: 0.85rem;
    border: 1px solid var(--line);
    border-radius: 0.55rem;
    background: #fffaf3;
}

.book-admin-cover {
    display: grid;
    flex: 0 0 92px;
    aspect-ratio: 0.7;
    place-items: center;
    overflow: hidden;
    background: var(--sage);
    color: #fffaf3;
    text-align: center;
    text-decoration: none;
}

.book-admin-cover img,
.book-detail-cover img { width: 100%; height: 100%; object-fit: cover; }
.book-admin-cover span { padding: 0.6rem; font-family: 'Playfair Display', serif; font-size: 1rem; }
.book-admin-info { min-width: 0; padding: 0.2rem 0 0 0.9rem; }
.book-admin-category { color: var(--terracotta-dark); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.book-admin-info h2 { margin: 0.35rem 0 0.8rem; font-family: 'Playfair Display', serif; font-size: 1.12rem; line-height: 1.15; }
.book-admin-info h2 a { color: var(--ink); text-decoration: none; }
.book-admin-meta { display: flex; flex-wrap: wrap; gap: 0.5rem; font-size: 0.78rem; }
.book-admin-meta strong { color: var(--terracotta-dark); }
.book-admin-meta span { color: var(--muted-ink); }
.book-admin-actions { display: flex; gap: 0.75rem; margin-top: 0.9rem; font-size: 0.8rem; font-weight: 700; }
.book-admin-actions a { color: var(--terracotta-dark); text-decoration: none; }
.book-admin-actions button { padding: 0; border: 0; background: none; color: var(--muted-ink); font: inherit; }

.book-pagination { margin-top: 1.5rem; }
.book-pagination .pagination { margin-bottom: 0; }
.book-pagination .page-link { color: var(--terracotta-dark); background: #fffaf3; border-color: var(--line); }
.book-pagination .page-item.active .page-link { color: #fffaf3; background: var(--terracotta); border-color: var(--terracotta); }

.empty-state {
    padding: 4rem 1.5rem;
    border: 1px dashed #cbbfae;
    border-radius: 0.65rem;
    background: rgba(255, 250, 243, 0.55);
    text-align: center;
}

.empty-state-mark { display: block; color: var(--terracotta); font-size: 2rem; }
.empty-state h2 { margin: 0.5rem 0 0.35rem; color: var(--ink); font-family: 'Playfair Display', serif; }
.empty-state p { margin: 0 0 1.25rem; color: var(--muted-ink); }
.compact-empty { max-width: 720px; }

.book-form-card {
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: 0.65rem;
    background: #fffaf3;
}

.book-form-layout { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 2rem; }
.form-field { margin-bottom: 1.1rem; }
.form-field label { display: block; margin-bottom: 0.4rem; color: var(--ink); font-size: 0.86rem; font-weight: 700; }
.form-field input,
.form-field select,
.form-field textarea { width: 100%; border: 1px solid var(--line); border-radius: 0.3rem; padding: 0.7rem 0.8rem; background: var(--paper); color: var(--ink); }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus { border-color: var(--terracotta); outline: 0; box-shadow: 0 0 0 3px rgba(184, 85, 63, 0.12); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.form-error { display: block; margin-top: 0.3rem; color: var(--terracotta-dark); font-size: 0.75rem; }
.form-help { display: block; margin-top: 0.35rem; color: var(--muted-ink); font-size: 0.75rem; }
.status-toggle { display: flex; align-items: center; gap: 0.5rem; color: var(--ink); font-size: 0.86rem; font-weight: 600; }
.status-toggle input { accent-color: var(--terracotta); }
.form-actions { display: flex; align-items: center; gap: 0.75rem; margin-top: 1.5rem; }
.form-actions form { margin: 0; }
.btn-light { border: 1px solid var(--line); background: transparent; color: var(--ink); }

.detail-back { margin-bottom: 1rem; }
.detail-back a { color: var(--terracotta-dark); font-size: 0.88rem; font-weight: 700; text-decoration: none; }
.book-detail-card { display: grid; grid-template-columns: minmax(220px, 300px) 1fr; gap: 2.5rem; padding: 2rem; border: 1px solid var(--line); border-radius: 0.65rem; background: #fffaf3; }
.book-detail-cover { display: grid; aspect-ratio: 0.7; place-items: center; overflow: hidden; background: var(--sage); color: #fffaf3; text-align: center; }
.book-detail-cover span { padding: 1.5rem; font-family: 'Playfair Display', serif; font-size: 1.6rem; }
.book-detail-content h1 { margin: 0.5rem 0 1rem; color: var(--ink); font-family: 'Playfair Display', serif; font-size: 2.5rem; }
.book-detail-description { max-width: 650px; color: var(--muted-ink); line-height: 1.7; }
.book-detail-facts { display: flex; flex-wrap: wrap; gap: 1.5rem; margin: 1.5rem 0; }
.book-detail-facts small, .book-detail-facts strong { display: block; }
.book-detail-facts small { color: var(--muted-ink); font-size: 0.72rem; text-transform: uppercase; }
.book-detail-facts strong { margin-top: 0.25rem; color: var(--ink); }
.book-status { display: inline-block; padding: 0.35rem 0.6rem; border-radius: 99px; font-size: 0.75rem; font-weight: 700; }
.book-status.available { background: #dfe9d9; color: #4f684c; }
.book-status.unavailable { background: #f2ddd7; color: var(--terracotta-dark); }

@media (max-width: 991.98px) {
    .book-admin-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .book-form-layout { grid-template-columns: 1fr; gap: 0; }
}

@media (max-width: 767.98px) {
    .crud-heading { align-items: start; flex-direction: column; }
    .book-admin-grid { grid-template-columns: 1fr; }
    .book-detail-card { grid-template-columns: 1fr; gap: 1.5rem; padding: 1.25rem; }
    .book-detail-cover { max-width: 220px; }
}