:root {
    color-scheme: light;
    --navy: #0F2747;
    --gold: #C8A03A;
    --white: #FFFFFF;
    --bg-light: #F7F9FC;
    --border: #E5E7EB;
    --text: #1F2937;
    --text-secondary: #6B7280;
    --hover: #F3F4F6;
    --card-radius: 18px;
}

body.dashboard-shell {
    min-height: 100vh;
    background: var(--bg-light);
    color: var(--text);
    font-family: 'Poppins', sans-serif;
    text-rendering: optimizeLegibility;
}

.dashboard-app {
    display: grid;
    grid-template-columns: 290px minmax(0, 1fr);
    min-height: 100vh;
    background: var(--bg-light);
}

.dashboard-sidebar {
    position: sticky;
    top: 0;
    width: 290px;
    min-height: 100vh;
    border-right: 1px solid rgba(255,255,255,0.08);
    background:
        linear-gradient(180deg, rgba(9, 20, 37, 0.82), rgba(9, 20, 37, 0.9)),
        url('/static/images/library.png') center/cover no-repeat,
        var(--navy);
    box-shadow: inset -1px 0 0 rgba(255,255,255,0.06);
    z-index: 1040;
}

.sidebar-brand {
    border-bottom: 1px solid rgba(255,255,255,0.12);
    backdrop-filter: none;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: rgba(255,255,255,0.95);
    border: 1px solid rgba(255,255,255,0.65);
    overflow: hidden;
    flex-shrink: 0;
}

.brand-logo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.brand-name {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.brand-text,
.brand-subtitle {
    color: rgba(255,255,255,0.72);
}

.sidebar-heading {
    display: block;
    margin: 1rem 0 .75rem;
    text-transform: uppercase;
    font-size: .68rem;
    letter-spacing: .14em;
    color: rgba(255,255,255,0.6);
}

.sidebar-nav {
    height: calc(100vh - 86px);
    overflow-y: auto;
    scrollbar-width: thin;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: .8rem;
    padding: 11px 14px;
    color: rgba(255,255,255,0.88);
    border-radius: 12px;
    margin-bottom: 8px;
    text-decoration: none;
    border: 1px solid transparent;
    transition: all .18s ease;
}

.sidebar-link i {
    font-size: 1rem;
    color: rgba(255,255,255,0.76);
}

.sidebar-link:hover {
    background: rgba(255,255,255,0.08);
    color: var(--white);
    border-color: rgba(255,255,255,0.1);
    transform: translateX(3px);
}

.sidebar-link.active {
    background: rgba(255,255,255,0.1);
    border-left: 4px solid var(--gold);
    padding-left: 10px;
    color: var(--white);
}

.sidebar-link.active i {
    color: var(--gold);
}

.dashboard-content-wrap {
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.dashboard-topbar {
    position: sticky;
    top: 0;
    z-index: 1020;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 14px 28px;
    border-bottom: 1px solid var(--border);
    background: rgba(247,249,252,0.92);
    backdrop-filter: blur(6px);
}

.topbar-title {
    color: var(--navy);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.topbar-breadcrumb {
    color: var(--text-secondary);
    font-size: .78rem;
    margin-top: 1px;
}

.topbar-search {
    width: 260px;
}

.topbar-search .form-control,
.topbar-search .input-group-text {
    background: var(--white);
    border: 1px solid var(--border);
    color: var(--text);
}

.topbar-search .input-group-text {
    border-right: 0;
}

.topbar-search .form-control {
    border-left: 0;
}

.topbar-search .form-control:focus {
    box-shadow: none;
    border-color: var(--gold);
}

.topbar-icon-btn {
    position: relative;
}

.topbar-date-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--text-secondary);
    font-size: .78rem;
    padding: 6px 10px;
}

.return-website-btn {
    background: var(--white);
    border: 1px solid var(--gold);
    color: var(--gold);
    border-radius: 11px;
    font-weight: 600;
    transition: background-color .3s ease, color .3s ease, border-color .3s ease, box-shadow .3s ease, transform .3s ease;
}

.return-website-btn:hover,
.return-website-btn:focus-visible {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.dashboard-shell .btn,
.dashboard-shell .page-link {
    transition: background-color .3s ease, color .3s ease, border-color .3s ease, box-shadow .3s ease, transform .3s ease;
    cursor: pointer;
}

.dashboard-shell .btn:hover,
.dashboard-shell .page-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.dashboard-shell .btn-outline-primary:hover,
.dashboard-shell .btn-outline-light:hover,
.dashboard-shell .btn-outline-secondary:hover {
    background: var(--gold) !important;
    border-color: var(--gold) !important;
    color: var(--white) !important;
}

.dashboard-shell .btn:focus-visible,
.dashboard-shell .page-link:focus-visible {
    outline: 2px solid rgba(200, 160, 58, 0.45);
    outline-offset: 2px;
}

.notification-count {
    position: absolute;
    top: -5px;
    right: -4px;
    width: 18px;
    height: 18px;
    font-size: .64rem;
    background: var(--gold);
    color: var(--navy);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-weight: 700;
}

.dashboard-main-content {
    padding: 30px;
    min-height: calc(100vh - 78px);
}
.dashboard-main-content .table,
.dashboard-main-content .table.table-dark,
.dashboard-main-content .table.table-striped {
    --bs-table-bg: var(--white);
    --bs-table-color: var(--text);
    --bs-table-striped-bg: #fcfdff;
    --bs-table-striped-color: var(--text);
    --bs-table-hover-bg: var(--hover);
    --bs-table-hover-color: var(--text);
    color: var(--text);
    background: var(--white);
}

.dashboard-page-header {
    margin-bottom: 24px;
}

.dashboard-header-inner h1,
.dashboard-title {
    margin: 0;
    color: var(--navy);
    font-size: clamp(1.45rem, 1.65vw, 1.9rem);
    font-weight: 600;
}

.dashboard-subtitle,
.dashboard-header-inner p {
    margin: 6px 0 0;
    color: var(--text-secondary);
    font-size: .92rem;
}

.dashboard-toolbar .btn {
    min-width: 96px;
}

.dashboard-grid,
.dashboard-section-grid,
.dashboard-page-body {
    display: grid;
    gap: 24px;
}

.dashboard-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
}

@media (max-width: 1400px) {
    .dashboard-cards-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 1200px) {
    .dashboard-cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .return-website-btn {
        padding-inline: 10px;
    }
}

@media (max-width: 768px) {
    .dashboard-cards-grid {
        grid-template-columns: 1fr;
    }
}

.dashboard-card,
.chart-card,
.dashboard-table-section,
.glass-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--card-radius);
    box-shadow: 0 8px 26px rgba(15, 39, 71, 0.08);
    animation: cardFadeIn .4s ease both;
}

.dashboard-card {
    position: relative;
    overflow: hidden;
    transition: transform .2s ease, box-shadow .2s ease;
}

.dashboard-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), #ddbe6d);
    opacity: 0;
    transition: opacity .2s ease;
}

.dashboard-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 34px rgba(15, 39, 71, 0.12);
}

.dashboard-card:hover::before {
    opacity: 1;
}

.card-head {
    margin-bottom: 16px;
}

.card-head h3,
.card-head h4 {
    color: var(--navy);
    font-size: 1.01rem;
    font-weight: 600;
    margin: 0;
}

.card-head p,
.text-muted,
.small-label {
    color: var(--text-secondary) !important;
    font-size: .84rem;
}

.card-value {
    font-size: clamp(1.5rem, 2.6vw, 2.2rem);
    font-weight: 700;
    margin-top: 8px;
    color: var(--navy);
    letter-spacing: -0.01em;
    font-variant-numeric: tabular-nums;
}

.dashboard-charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

@media (max-width: 992px) {
    .dashboard-charts-grid {
        grid-template-columns: 1fr;
    }
}

.dashboard-table-section {
    overflow: hidden;
}

.dashboard-footer {
    padding: 16px 28px;
    border-top: 1px solid var(--border);
    background: var(--white);
}

.dashboard-auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: var(--bg-light);
}

.auth-main-container {
    width: min(520px, 100% - 32px);
    padding: 32px;
}

.auth-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(15,39,71,0.08);
}

.auth-heading {
    color: var(--navy);
}

.auth-subtitle {
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    border-radius: 12px !important;
    box-shadow: 0 2px 8px rgba(15,39,71,0.06);
    transition: transform .18s ease, box-shadow .18s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(15,39,71,0.1);
}

.btn-primary {
    background: var(--gold) !important;
    color: var(--white) !important;
    border: 1px solid #b48819 !important;
}

.btn-primary:hover {
    background: #b89233 !important;
}

.btn-secondary {
    background: var(--navy) !important;
    color: var(--white) !important;
    border: 1px solid var(--navy) !important;
}

.btn-outline-light,
.btn-outline-primary {
    background: var(--white) !important;
    color: var(--navy) !important;
    border: 1px solid var(--navy) !important;
}

/* Badges */
.badge {
    border-radius: 999px;
    padding: .4rem .62rem;
    font-weight: 600;
    letter-spacing: .01em;
}

.badge.bg-primary,
.badge.bg-secondary,
.badge.bg-info {
    background: rgba(15,39,71,0.12) !important;
    color: var(--navy) !important;
}

.badge.bg-warning {
    background: rgba(200,160,58,0.2) !important;
    color: #7a5d12 !important;
}

.badge.bg-success {
    background: rgba(18, 121, 91, 0.16) !important;
    color: #0d6a4f !important;
}

.badge.bg-danger {
    background: rgba(185, 28, 28, 0.14) !important;
    color: #9f1e1e !important;
}

/* Table baseline */
.table-responsive {
    overflow-x: auto;
}

.dashboard-table {
    margin-bottom: 0;
}

/* Forms baseline */
.form-control,
.form-select {
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--text);
    box-shadow: none;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 4px rgba(200,160,58,0.1);
}

/* Link tone */
a {
    color: var(--navy);
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile and tablet */
@media (max-width: 1199px) {
    .dashboard-app {
        grid-template-columns: 1fr;
    }

    .dashboard-sidebar {
        position: static;
        width: 100%;
        min-height: auto;
    }

    #dashboardSidebar:not(.show) {
        display: none;
    }

    #dashboardSidebar.show {
        display: block;
        border-top: 1px solid rgba(255,255,255,0.12);
        animation: slideInSidebar .22s ease;
    }
}

@media (max-width: 992px) {
    .dashboard-topbar {
        flex-wrap: wrap;
        padding: 14px 16px;
    }

    .topbar-right {
        width: 100%;
        flex-wrap: wrap;
    }

    .topbar-search {
        width: 100%;
        order: 3;
    }

    .dashboard-main-content {
        padding: 20px;
    }
}

@media (max-width: 576px) {
    .dashboard-main-content {
        padding: 16px;
    }

    .dashboard-toolbar {
        width: 100%;
    }

    .dashboard-toolbar .btn {
        flex: 1 1 auto;
    }

    .topbar-date-pill {
        font-size: .72rem;
    }
}