/* ==========================================================================
   AVA design system — layered on top of Bootstrap 5.3
   ========================================================================== */

:root {
    /* Brand palette: overridden at runtime from the institution settings */
    --ava-primary: #4f46e5;
    --ava-primary-hover: #4338ca;
    --ava-primary-emphasis: #3730a3;
    --ava-primary-dark: #312e81;
    --ava-primary-light: #6366f1;
    --ava-primary-muted: #818cf8;
    --ava-primary-focus: #a5b4fc;
    --ava-primary-rgb: 79, 70, 229;
    --ava-primary-soft: #eef2ff;
    --ava-primary-softer: #f5f3ff;
    --ava-primary-tint: #e0e7ff;
    --ava-primary-border: #c7d2fe;
    --ava-bg: #f5f6fa;
    --ava-surface: #ffffff;
    --ava-border: #e6e8ef;
    --ava-border-strong: #d5d9e3;
    --ava-text: #1e2433;
    --ava-muted: #667085;
    --ava-subtle: #98a2b3;
    --ava-success: #12805c;
    --ava-success-soft: #e8f6f0;
    --ava-danger: #d92d20;
    --ava-danger-soft: #fdecea;
    --ava-warning: #b54708;
    --ava-warning-soft: #fef4e6;
    --ava-info: #0e7090;
    --ava-info-soft: #e6f4f8;
    --ava-radius: .75rem;
    --ava-radius-sm: .5rem;
    --ava-shadow-sm: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .04);
    --ava-shadow: 0 4px 12px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .04);
    --ava-shadow-lg: 0 16px 40px rgba(16, 24, 40, .12);
    --ava-sidebar-width: 264px;

    --bs-body-font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --bs-body-font-size: .9375rem;
    --bs-body-color: var(--ava-text);
    --bs-body-bg: var(--ava-bg);
    --bs-secondary-color: var(--ava-muted);
    --bs-tertiary-bg: #f2f4f7;
    --bs-border-color: var(--ava-border);
    --bs-border-radius: var(--ava-radius-sm);
    --bs-border-radius-lg: var(--ava-radius);
    --bs-primary: var(--ava-primary);
    --bs-primary-rgb: var(--ava-primary-rgb);
    --bs-primary-bg-subtle: var(--ava-primary-soft);
    --bs-primary-border-subtle: var(--ava-primary-border);
    --bs-primary-text-emphasis: var(--ava-primary-emphasis);
    --bs-success-bg-subtle: var(--ava-success-soft);
    --bs-success-text-emphasis: #05603a;
    --bs-danger-bg-subtle: var(--ava-danger-soft);
    --bs-warning-bg-subtle: var(--ava-warning-soft);
    --bs-link-color: var(--ava-primary);
    --bs-link-color-rgb: var(--ava-primary-rgb);
    --bs-link-hover-color: var(--ava-primary-hover);
    --bs-link-hover-color-rgb: var(--ava-primary-rgb);
    --bs-focus-ring-color: rgba(var(--ava-primary-rgb), .25);
}

body {
    -webkit-font-smoothing: antialiased;
    font-feature-settings: "cv11", "ss01";
    background: var(--ava-bg);
}

h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
    font-weight: 600;
    letter-spacing: -.01em;
    color: var(--ava-text);
}

a { text-decoration: none; }
a:hover { text-decoration: underline; }
.btn:hover, .nav-link:hover, .dropdown-item:hover, .list-group-item-action:hover, .stretched-link:hover, .sidebar-link:hover { text-decoration: none; }

.text-muted, .text-body-secondary { color: var(--ava-muted) !important; }
.small, small { font-size: .8125rem; }
.min-w-0 { min-width: 0; }
.fw-medium { font-weight: 500 !important; }
.tabular-nums { font-variant-numeric: tabular-nums; }

/* --------------------------------------------------------------------------
   Bootstrap component overrides
   -------------------------------------------------------------------------- */

.btn {
    --bs-btn-font-weight: 500;
    --bs-btn-padding-x: .875rem;
    --bs-btn-padding-y: .5rem;
    --bs-btn-font-size: .875rem;
    --bs-btn-border-radius: var(--ava-radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .375rem;
    white-space: nowrap;
}

.btn-sm {
    --bs-btn-padding-x: .625rem;
    --bs-btn-padding-y: .3125rem;
    --bs-btn-font-size: .8125rem;
}

.btn-lg {
    --bs-btn-padding-x: 1.25rem;
    --bs-btn-padding-y: .6875rem;
    --bs-btn-font-size: 1rem;
}

.btn .bi { line-height: 1; }

.btn-primary {
    --bs-btn-bg: var(--ava-primary);
    --bs-btn-border-color: var(--ava-primary);
    --bs-btn-hover-bg: var(--ava-primary-hover);
    --bs-btn-hover-border-color: var(--ava-primary-hover);
    --bs-btn-active-bg: var(--ava-primary-emphasis);
    --bs-btn-active-border-color: var(--ava-primary-emphasis);
    --bs-btn-disabled-bg: var(--ava-primary);
    --bs-btn-disabled-border-color: var(--ava-primary);
    --bs-btn-focus-shadow-rgb: var(--ava-primary-rgb);
    box-shadow: 0 1px 2px rgba(var(--ava-primary-rgb), .25);
}

.btn-outline-primary {
    --bs-btn-color: var(--ava-primary);
    --bs-btn-border-color: var(--ava-primary-border);
    --bs-btn-hover-bg: var(--ava-primary-soft);
    --bs-btn-hover-color: var(--ava-primary-hover);
    --bs-btn-hover-border-color: var(--ava-primary-border);
    --bs-btn-active-bg: var(--ava-primary-soft);
    --bs-btn-active-color: var(--ava-primary-hover);
    --bs-btn-active-border-color: var(--ava-primary);
    --bs-btn-focus-shadow-rgb: var(--ava-primary-rgb);
}

.btn-outline-secondary,
.btn-light {
    --bs-btn-color: #344054;
    --bs-btn-bg: var(--ava-surface);
    --bs-btn-border-color: var(--ava-border-strong);
    --bs-btn-hover-color: #1d2939;
    --bs-btn-hover-bg: #f9fafb;
    --bs-btn-hover-border-color: #c4cad6;
    --bs-btn-active-color: #1d2939;
    --bs-btn-active-bg: #f2f4f7;
    --bs-btn-active-border-color: #c4cad6;
    --bs-btn-disabled-color: #98a2b3;
    --bs-btn-disabled-bg: var(--ava-surface);
    --bs-btn-disabled-border-color: var(--ava-border);
    box-shadow: var(--ava-shadow-sm);
}

.btn-outline-danger {
    --bs-btn-color: var(--ava-danger);
    --bs-btn-border-color: #f5c2bd;
    --bs-btn-hover-bg: var(--ava-danger-soft);
    --bs-btn-hover-color: #b42318;
    --bs-btn-hover-border-color: #f5c2bd;
    --bs-btn-active-bg: var(--ava-danger-soft);
    --bs-btn-active-color: #b42318;
    --bs-btn-active-border-color: var(--ava-danger);
}

.btn-danger {
    --bs-btn-bg: var(--ava-danger);
    --bs-btn-border-color: var(--ava-danger);
    --bs-btn-hover-bg: #b42318;
    --bs-btn-hover-border-color: #b42318;
}

.btn-success {
    --bs-btn-bg: var(--ava-success);
    --bs-btn-border-color: var(--ava-success);
    --bs-btn-hover-bg: #05603a;
    --bs-btn-hover-border-color: #05603a;
}

.btn-outline-success {
    --bs-btn-color: var(--ava-success);
    --bs-btn-border-color: #a6dcc5;
    --bs-btn-hover-bg: var(--ava-success-soft);
    --bs-btn-hover-color: #05603a;
    --bs-btn-hover-border-color: #a6dcc5;
    --bs-btn-active-bg: var(--ava-success-soft);
    --bs-btn-active-color: #05603a;
}

.btn-ghost {
    --bs-btn-color: var(--ava-muted);
    --bs-btn-hover-color: var(--ava-text);
    --bs-btn-hover-bg: #f2f4f7;
    --bs-btn-active-bg: #eaecf0;
    --bs-btn-border-color: transparent;
    --bs-btn-hover-border-color: transparent;
}

.btn-icon {
    --bs-btn-padding-x: .5rem;
    width: 2.125rem;
    height: 2.125rem;
}

.btn-icon.btn-sm {
    width: 1.875rem;
    height: 1.875rem;
    --bs-btn-padding-x: .25rem;
}

.btn.is-loading { pointer-events: none; opacity: .85; }

.card {
    --bs-card-border-color: var(--ava-border);
    --bs-card-border-radius: var(--ava-radius);
    --bs-card-inner-border-radius: calc(var(--ava-radius) - 1px);
    --bs-card-cap-bg: var(--ava-surface);
    --bs-card-spacer-y: 1.25rem;
    --bs-card-spacer-x: 1.25rem;
    box-shadow: var(--ava-shadow-sm);
}

.card-header {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.card-title-sm {
    font-size: .9375rem;
    font-weight: 600;
    margin: 0;
}

.form-label {
    font-weight: 500;
    font-size: .875rem;
    color: #344054;
    margin-bottom: .375rem;
}

.form-text { color: var(--ava-muted); font-size: .8125rem; }

.form-control,
.form-select {
    border-color: var(--ava-border-strong);
    border-radius: var(--ava-radius-sm);
    padding: .5625rem .8125rem;
    font-size: .9375rem;
    box-shadow: var(--ava-shadow-sm);
}

.form-control-sm, .form-select-sm { padding: .375rem .625rem; font-size: .8125rem; }

.form-control::placeholder { color: var(--ava-subtle); }

.form-control:focus,
.form-select:focus,
.form-check-input:focus {
    border-color: var(--ava-primary-focus);
    box-shadow: 0 0 0 4px rgba(var(--ava-primary-rgb), .14);
}

.form-check-input:checked {
    background-color: var(--ava-primary);
    border-color: var(--ava-primary);
}

.form-check-input { border-color: #c4cad6; }

.form-control.is-invalid, .form-select.is-invalid { border-color: #f5a097; }
.invalid-feedback { font-size: .8125rem; }

.input-group-text {
    background: #f9fafb;
    border-color: var(--ava-border-strong);
    color: var(--ava-muted);
}

.table {
    --bs-table-bg: transparent;
    --bs-table-hover-bg: #f9fafb;
    --bs-table-border-color: var(--ava-border);
    margin-bottom: 0;
}

.table > thead th {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--ava-muted);
    font-weight: 600;
    background: #f9fafb;
    padding-top: .75rem;
    padding-bottom: .75rem;
    white-space: nowrap;
}

.table > :not(caption) > * > * { padding: .875rem 1rem; }
.table > tbody > tr:last-child > * { border-bottom: 0; }

.badge {
    --bs-badge-font-weight: 500;
    --bs-badge-padding-x: .5rem;
    --bs-badge-padding-y: .25rem;
    --bs-badge-font-size: .75rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    gap: .25rem;
}

.badge-soft { background: #f2f4f7; color: #344054; }
.badge-soft-primary { background: var(--ava-primary-soft); color: var(--ava-primary-emphasis); }
.badge-soft-success { background: var(--ava-success-soft); color: #05603a; }
.badge-soft-danger { background: var(--ava-danger-soft); color: #b42318; }
.badge-soft-warning { background: var(--ava-warning-soft); color: var(--ava-warning); }
.badge-soft-info { background: var(--ava-info-soft); color: var(--ava-info); }

.badge-dot::before {
    content: "";
    width: .375rem;
    height: .375rem;
    border-radius: 50%;
    background: currentColor;
}

.progress {
    --bs-progress-height: .5rem;
    --bs-progress-bg: #eaecf0;
    --bs-progress-bar-bg: var(--ava-primary);
    --bs-progress-border-radius: 999px;
}

.progress-bar.bg-success { background-color: var(--ava-success) !important; }

.pagination {
    --bs-pagination-color: #344054;
    --bs-pagination-border-color: var(--ava-border);
    --bs-pagination-hover-bg: #f9fafb;
    --bs-pagination-hover-color: var(--ava-text);
    --bs-pagination-hover-border-color: var(--ava-border);
    --bs-pagination-focus-box-shadow: 0 0 0 4px rgba(var(--ava-primary-rgb), .14);
    --bs-pagination-active-bg: var(--ava-primary);
    --bs-pagination-active-border-color: var(--ava-primary);
    --bs-pagination-font-size: .875rem;
    margin-bottom: 0;
}

nav[role="navigation"] p.small { margin-bottom: 0; }

.dropdown-menu {
    --bs-dropdown-border-color: var(--ava-border);
    --bs-dropdown-border-radius: var(--ava-radius-sm);
    --bs-dropdown-box-shadow: var(--ava-shadow-lg);
    --bs-dropdown-font-size: .875rem;
    --bs-dropdown-link-active-bg: var(--ava-primary-soft);
    --bs-dropdown-link-active-color: var(--ava-primary-emphasis);
    --bs-dropdown-item-padding-y: .4375rem;
    box-shadow: var(--bs-dropdown-box-shadow);
    padding: .375rem;
}

.dropdown-item { border-radius: .375rem; display: flex; align-items: center; gap: .5rem; }
.dropdown-item.text-danger:hover { background: var(--ava-danger-soft); }

.modal-content {
    border: 0;
    border-radius: var(--ava-radius);
    box-shadow: var(--ava-shadow-lg);
}

.modal-header, .modal-footer { border-color: var(--ava-border); }

.nav-tabs { --bs-nav-tabs-border-color: var(--ava-border); }
.nav-pills { --bs-nav-pills-link-active-bg: var(--ava-primary); }

.nav-segmented {
    display: inline-flex;
    flex-wrap: wrap;
    gap: .25rem;
    padding: .25rem;
    background: #eef0f4;
    border-radius: var(--ava-radius-sm);
}

.nav-segmented .nav-link {
    padding: .375rem .75rem;
    font-size: .8125rem;
    font-weight: 500;
    color: var(--ava-muted);
    border-radius: .375rem;
    display: inline-flex;
    align-items: center;
    gap: .375rem;
}

.nav-segmented .nav-link.active {
    background: var(--ava-surface);
    color: var(--ava-text);
    box-shadow: var(--ava-shadow-sm);
}

.nav-segmented .count {
    font-size: .6875rem;
    background: rgba(16, 24, 40, .06);
    border-radius: 999px;
    padding: 0 .375rem;
}

.alert { border-radius: var(--ava-radius-sm); font-size: .875rem; }

.list-group { --bs-list-group-border-color: var(--ava-border); }

.accordion {
    --bs-accordion-border-color: var(--ava-border);
    --bs-accordion-active-bg: var(--ava-surface);
    --bs-accordion-active-color: var(--ava-text);
    --bs-accordion-btn-focus-box-shadow: none;
}

/* --------------------------------------------------------------------------
   App shell
   -------------------------------------------------------------------------- */

.app-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--ava-sidebar-width);
    background: var(--ava-surface);
    border-right: 1px solid var(--ava-border);
    display: flex;
    flex-direction: column;
    z-index: 1030;
}

.app-main {
    margin-left: var(--ava-sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-content {
    flex: 1;
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 2rem 2rem 4rem;
}

.app-content.is-wide { max-width: 1600px; }

.app-brand {
    display: flex;
    align-items: center;
    gap: .625rem;
    padding: 1.25rem 1.25rem 1rem;
    color: var(--ava-text);
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -.02em;
}

.app-brand:hover { color: var(--ava-text); }

.app-brand-mark {
    width: 2.125rem;
    height: 2.125rem;
    border-radius: .625rem;
    background: linear-gradient(135deg, var(--ava-primary-light), var(--ava-primary-hover));
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 1.125rem;
    box-shadow: 0 4px 10px rgba(var(--ava-primary-rgb), .3);
}

.app-brand small {
    display: block;
    font-size: .6875rem;
    font-weight: 500;
    color: var(--ava-muted);
    letter-spacing: 0;
    margin-top: -.125rem;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: .5rem .75rem;
}

.sidebar-section {
    font-size: .6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--ava-subtle);
    padding: 1rem .75rem .375rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .5625rem .75rem;
    border-radius: var(--ava-radius-sm);
    color: #475467;
    font-weight: 500;
    font-size: .875rem;
    margin-bottom: .125rem;
    transition: background-color .15s ease, color .15s ease;
}

.sidebar-link .bi {
    font-size: 1.0625rem;
    color: #98a2b3;
    transition: color .15s ease;
}

.sidebar-link:hover {
    background: #f5f6fa;
    color: var(--ava-text);
}

.sidebar-link:hover .bi { color: #667085; }

.sidebar-link.active {
    background: var(--ava-primary-soft);
    color: var(--ava-primary-emphasis);
}

.sidebar-link.active .bi { color: var(--ava-primary); }

.sidebar-link .sidebar-count {
    margin-left: auto;
    font-size: .6875rem;
    font-weight: 600;
    background: var(--ava-warning-soft);
    color: var(--ava-warning);
    border-radius: 999px;
    padding: .0625rem .4375rem;
}

.sidebar-user {
    border-top: 1px solid var(--ava-border);
    padding: .875rem 1rem;
    display: flex;
    align-items: center;
    gap: .75rem;
}

.avatar {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    display: inline-grid;
    place-items: center;
    flex-shrink: 0;
    font-size: .8125rem;
    font-weight: 600;
    background: var(--ava-primary-soft);
    color: var(--ava-primary-emphasis);
}

.avatar-sm { width: 1.875rem; height: 1.875rem; font-size: .6875rem; }
.avatar-lg { width: 3.5rem; height: 3.5rem; font-size: 1.125rem; }

.app-topbar {
    display: none;
    position: sticky;
    top: 0;
    z-index: 1020;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    padding: .625rem 1rem;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--ava-border);
}

.app-topbar .app-brand { padding: 0; font-size: 1rem; }
.app-topbar .app-brand-mark { width: 1.875rem; height: 1.875rem; font-size: 1rem; }

@media (max-width: 991.98px) {
    .app-sidebar {
        transform: translateX(-100%);
        transition: transform .25s ease;
        box-shadow: var(--ava-shadow-lg);
    }

    .app-sidebar.is-open { transform: translateX(0); }

    .app-main { margin-left: 0; }
    .app-topbar { display: flex; }
    .app-content { padding: 1.25rem 1rem 3rem; }

    .sidebar-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(16, 24, 40, .4);
        z-index: 1025;
        opacity: 0;
        pointer-events: none;
        transition: opacity .2s ease;
    }

    .sidebar-backdrop.is-visible { opacity: 1; pointer-events: auto; }
}

/* --------------------------------------------------------------------------
   Page building blocks
   -------------------------------------------------------------------------- */

.page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.page-header h1 {
    font-size: 1.5rem;
    margin: 0;
    line-height: 1.25;
}

.page-header .page-subtitle {
    color: var(--ava-muted);
    margin: .375rem 0 0;
    max-width: 70ch;
}

.page-header .page-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.breadcrumb {
    --bs-breadcrumb-divider-color: var(--ava-subtle);
    --bs-breadcrumb-item-active-color: var(--ava-muted);
    --bs-breadcrumb-margin-bottom: .5rem;
    font-size: .8125rem;
}

.breadcrumb a { color: var(--ava-muted); }
.breadcrumb a:hover { color: var(--ava-primary); }

.section-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.stat-card {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: .25rem;
    height: 100%;
}

.stat-card .stat-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: .625rem;
    display: grid;
    place-items: center;
    font-size: 1.125rem;
    margin-bottom: .75rem;
    background: var(--ava-primary-soft);
    color: var(--ava-primary);
}

.stat-card .stat-icon.is-success { background: var(--ava-success-soft); color: var(--ava-success); }
.stat-card .stat-icon.is-warning { background: var(--ava-warning-soft); color: var(--ava-warning); }
.stat-card .stat-icon.is-info { background: var(--ava-info-soft); color: var(--ava-info); }
.stat-card .stat-icon.is-danger { background: var(--ava-danger-soft); color: var(--ava-danger); }

.stat-card .stat-label { font-size: .8125rem; color: var(--ava-muted); font-weight: 500; }
.stat-card .stat-value { font-size: 1.75rem; font-weight: 700; letter-spacing: -.02em; line-height: 1.2; font-variant-numeric: tabular-nums; }
.stat-card .stat-hint { font-size: .75rem; color: var(--ava-subtle); }

.empty-state {
    text-align: center;
    padding: 3.5rem 1.5rem;
}

.empty-state .empty-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    display: inline-grid;
    place-items: center;
    background: #f2f4f7;
    color: #667085;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 0 0 8px #f9fafb;
}

.empty-state h3 { font-size: 1rem; margin-bottom: .375rem; }
.empty-state p { color: var(--ava-muted); max-width: 42ch; margin: 0 auto 1.25rem; }

.toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .75rem;
    padding: .875rem 1rem;
    border-bottom: 1px solid var(--ava-border);
}

.search-input {
    position: relative;
    flex: 1 1 240px;
    max-width: 360px;
}

.search-input .bi {
    position: absolute;
    left: .75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--ava-subtle);
    pointer-events: none;
}

.search-input .form-control { padding-left: 2.25rem; }

.card-footer-pagination {
    padding: .75rem 1rem;
    border-top: 1px solid var(--ava-border);
}

.cover-thumb {
    border-radius: var(--ava-radius-sm);
    object-fit: cover;
    background: linear-gradient(135deg, var(--ava-primary-soft), var(--ava-primary-tint));
    flex-shrink: 0;
    display: grid;
    place-items: center;
    color: var(--ava-primary-muted);
    overflow: hidden;
}

.cover-thumb img { width: 100%; height: 100%; object-fit: cover; }

.meta-list {
    display: flex;
    flex-wrap: wrap;
    gap: .375rem 1rem;
    font-size: .8125rem;
    color: var(--ava-muted);
}

.meta-list > span { display: inline-flex; align-items: center; gap: .3125rem; }

.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rich-content { line-height: 1.65; overflow-wrap: anywhere; }
.rich-content img { max-width: 100%; height: auto; border-radius: .375rem; }
.rich-content p:last-child, .rich-content ul:last-child, .rich-content ol:last-child { margin-bottom: 0; }

.sticky-actions {
    position: sticky;
    bottom: 0;
    z-index: 1010;
    margin: 1.5rem -2rem -4rem;
    padding: .875rem 2rem;
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--ava-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
}

@media (max-width: 991.98px) {
    .sticky-actions { margin: 1.5rem -1rem -3rem; padding: .75rem 1rem; }
}

.form-section + .form-section {
    border-top: 1px solid var(--ava-border);
    padding-top: 1.5rem;
    margin-top: 1.5rem;
}

.form-section-title { font-size: .9375rem; font-weight: 600; margin-bottom: .25rem; }
.form-section-hint { font-size: .8125rem; color: var(--ava-muted); margin-bottom: 1rem; }

/* Choice cards (radio as cards) */
.choice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: .625rem;
}

.choice-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: .375rem;
    padding: .875rem;
    border: 1px solid var(--ava-border-strong);
    border-radius: var(--ava-radius-sm);
    background: var(--ava-surface);
    cursor: pointer;
    transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease;
    margin: 0;
}

.choice-card:hover { border-color: var(--ava-primary-focus); }
.choice-card input { position: absolute; opacity: 0; pointer-events: none; }
.choice-card .bi { font-size: 1.25rem; color: var(--ava-muted); }
.choice-card .choice-title { font-weight: 600; font-size: .875rem; }
.choice-card .choice-hint { font-size: .75rem; color: var(--ava-muted); line-height: 1.35; }

.choice-card:has(input:checked) {
    border-color: var(--ava-primary);
    background: var(--ava-primary-soft);
    box-shadow: 0 0 0 1px var(--ava-primary);
}

.choice-card:has(input:checked) .bi { color: var(--ava-primary); }
.choice-card:has(input:focus-visible) { box-shadow: 0 0 0 4px rgba(var(--ava-primary-rgb), .2); }

/* Drop zone for uploads */
.dropzone {
    position: relative;
    border: 1.5px dashed var(--ava-border-strong);
    border-radius: var(--ava-radius);
    background: #fafbfc;
    padding: 1.5rem;
    text-align: center;
    transition: border-color .15s ease, background-color .15s ease;
    cursor: pointer;
}

.dropzone:hover, .dropzone.is-dragover {
    border-color: var(--ava-primary);
    background: var(--ava-primary-soft);
}

.dropzone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.dropzone .dropzone-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    background: var(--ava-surface);
    border: 1px solid var(--ava-border);
    display: inline-grid;
    place-items: center;
    font-size: 1.25rem;
    color: var(--ava-muted);
    margin-bottom: .625rem;
}

.dropzone .dropzone-file {
    display: none;
    align-items: center;
    gap: .5rem;
    justify-content: center;
    font-weight: 500;
    margin-top: .5rem;
    color: var(--ava-text);
}

.dropzone.has-file .dropzone-file { display: flex; }

.cover-preview {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--ava-radius-sm);
    object-fit: cover;
    border: 1px solid var(--ava-border);
}

/* Upload progress overlay */
.upload-progress {
    display: none;
    margin-top: 1rem;
    padding: 1rem;
    border: 1px solid var(--ava-primary-border);
    background: var(--ava-primary-soft);
    border-radius: var(--ava-radius-sm);
}

.upload-progress.is-visible { display: block; }

/* Toasts */
.toast-stack {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1090;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    max-width: min(420px, calc(100vw - 2rem));
}

.app-toast {
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    padding: .875rem 1rem;
    background: var(--ava-surface);
    border: 1px solid var(--ava-border);
    border-radius: var(--ava-radius-sm);
    box-shadow: var(--ava-shadow-lg);
    font-size: .875rem;
    animation: toast-in .25s ease;
}

.app-toast .toast-icon {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    flex-shrink: 0;
    background: var(--ava-success-soft);
    color: var(--ava-success);
}

.app-toast.is-error .toast-icon { background: var(--ava-danger-soft); color: var(--ava-danger); }
.app-toast.is-info .toast-icon { background: var(--ava-info-soft); color: var(--ava-info); }
.app-toast .toast-body { flex: 1; padding-top: .1875rem; }
.app-toast.is-leaving { animation: toast-out .2s ease forwards; }

@keyframes toast-in { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(-6px); } }

/* --------------------------------------------------------------------------
   Course builder (admin)
   -------------------------------------------------------------------------- */

.module-card { overflow: hidden; }
.module-card + .module-card { margin-top: 1rem; }

.module-header {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: 1rem 1.25rem;
}

.module-toggle {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: .75rem;
    border: 0;
    background: none;
    padding: 0;
    text-align: left;
    color: inherit;
}

.module-toggle .module-chevron { transition: transform .2s ease; color: var(--ava-subtle); }
.module-toggle:not(.collapsed) .module-chevron { transform: rotate(90deg); }

.module-index {
    width: 2rem;
    height: 2rem;
    border-radius: .5rem;
    background: #f2f4f7;
    color: #475467;
    display: grid;
    place-items: center;
    font-weight: 600;
    font-size: .8125rem;
    flex-shrink: 0;
}

.module-body { border-top: 1px solid var(--ava-border); background: #fcfcfd; }

.item-row {
    display: flex;
    align-items: center;
    gap: .875rem;
    padding: .75rem 1.25rem;
    border-bottom: 1px solid var(--ava-border);
    background: var(--ava-surface);
}

.item-row:last-child { border-bottom: 0; }
.item-row:hover { background: #fafbfc; }

.item-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: .5rem;
    display: grid;
    place-items: center;
    font-size: 1rem;
    flex-shrink: 0;
    background: #f2f4f7;
    color: #475467;
}

.item-icon.type-texto { background: #eff8ff; color: #175cd3; }
.item-icon.type-pdf { background: #fef3f2; color: #d92d20; }
.item-icon.type-video-aula { background: #f4f3ff; color: #5925dc; }
.item-icon.type-youtube { background: #fef3f2; color: #e31b54; }
.item-icon.type-slides { background: #fffaeb; color: #dc6803; }
.item-icon.type-assessment { background: var(--ava-success-soft); color: var(--ava-success); }

.item-actions { display: flex; align-items: center; gap: .25rem; flex-shrink: 0; }

.reorder-group { display: inline-flex; flex-direction: column; }
.reorder-group form { line-height: 0; }

.reorder-group .btn {
    --bs-btn-padding-y: 0;
    --bs-btn-padding-x: .25rem;
    height: 1rem;
    font-size: .75rem;
    border: 0;
    color: var(--ava-subtle);
    box-shadow: none;
}

.reorder-group .btn:hover { color: var(--ava-text); background: #f2f4f7; }
.reorder-group .btn:disabled { visibility: hidden; }

.module-section-label {
    font-size: .6875rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    font-weight: 600;
    color: var(--ava-subtle);
    padding: .875rem 1.25rem .5rem;
}

/* --------------------------------------------------------------------------
   Assessment builder (admin)
   -------------------------------------------------------------------------- */

.question-card {
    border: 1px solid var(--ava-border);
    border-radius: var(--ava-radius);
    background: var(--ava-surface);
    box-shadow: var(--ava-shadow-sm);
    transition: border-color .15s ease, box-shadow .15s ease;
    scroll-margin-top: 1.5rem;
}

.question-card + .question-card { margin-top: 1rem; }
.question-card:focus-within { border-color: var(--ava-primary-border); box-shadow: var(--ava-shadow); }
.question-card.has-error { border-color: #f5a097; }

.question-card.is-flash { animation: flash 1.2s ease; }
@keyframes flash { 0% { box-shadow: 0 0 0 4px rgba(var(--ava-primary-rgb), .35); } 100% { box-shadow: var(--ava-shadow-sm); } }

.question-head {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem 1rem .75rem 1.25rem;
    border-bottom: 1px solid var(--ava-border);
}

.question-number {
    width: 1.875rem;
    height: 1.875rem;
    border-radius: .5rem;
    background: var(--ava-primary);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: .8125rem;
    font-weight: 600;
    flex-shrink: 0;
}

.question-card.has-error .question-number { background: var(--ava-danger); }

.question-summary {
    flex: 1;
    min-width: 0;
    font-size: .875rem;
    color: var(--ava-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.question-body { padding: 1.25rem; }
.question-card.is-collapsed .question-body { display: none; }
.question-card.is-collapsed .question-head { border-bottom: 0; }
.question-card .js-collapse-question .bi { transition: transform .2s ease; }
.question-card.is-collapsed .js-collapse-question .bi { transform: rotate(-90deg); }

.option-row {
    display: flex;
    align-items: center;
    gap: .625rem;
    padding: .375rem .375rem .375rem .5rem;
    border: 1px solid var(--ava-border-strong);
    border-radius: var(--ava-radius-sm);
    background: var(--ava-surface);
    transition: border-color .15s ease, background-color .15s ease;
}

.option-row + .option-row { margin-top: .5rem; }
.option-row:focus-within { border-color: var(--ava-primary-focus); box-shadow: 0 0 0 4px rgba(var(--ava-primary-rgb), .1); }

.option-row.is-correct {
    border-color: #75c9a4;
    background: var(--ava-success-soft);
}

.option-letter {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background: #f2f4f7;
    color: #475467;
    display: grid;
    place-items: center;
    font-weight: 600;
    font-size: .8125rem;
    flex-shrink: 0;
}

.option-row.is-correct .option-letter { background: var(--ava-success); color: #fff; }

.option-row .option-input {
    flex: 1;
    min-width: 0;
    border: 0;
    background: transparent;
    padding: .375rem .25rem;
    font-size: .9375rem;
    outline: none;
    box-shadow: none;
}

.option-row .option-input.is-invalid { color: var(--ava-danger); }
.option-row:has(.option-input.is-invalid) { border-color: #f5a097; }

.correct-toggle {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    padding: .3125rem .625rem;
    border-radius: 999px;
    border: 1px solid var(--ava-border-strong);
    font-size: .75rem;
    font-weight: 500;
    color: var(--ava-muted);
    background: var(--ava-surface);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    margin: 0;
}

.correct-toggle input { position: absolute; opacity: 0; pointer-events: none; }
.correct-toggle:hover { border-color: #75c9a4; color: var(--ava-success); }
.correct-toggle:has(input:checked) { background: var(--ava-success); border-color: var(--ava-success); color: #fff; }
.correct-toggle:has(input:focus-visible) { box-shadow: 0 0 0 3px rgba(18, 128, 92, .25); }
.correct-toggle .label-on { display: none; }
.correct-toggle:has(input:checked) .label-on { display: inline; }
.correct-toggle:has(input:checked) .label-off { display: none; }

.question-outline {
    position: sticky;
    top: 1.5rem;
}

.outline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(2.25rem, 1fr));
    gap: .375rem;
}

.outline-chip {
    height: 2.25rem;
    border-radius: .5rem;
    border: 1px solid var(--ava-border-strong);
    background: var(--ava-surface);
    font-size: .8125rem;
    font-weight: 600;
    color: #475467;
    display: grid;
    place-items: center;
    cursor: pointer;
    padding: 0;
}

.outline-chip:hover { border-color: var(--ava-primary); color: var(--ava-primary); }
.outline-chip.is-complete { background: var(--ava-success-soft); border-color: #a6dcc5; color: #05603a; }
.outline-chip.is-incomplete { background: var(--ava-warning-soft); border-color: #fedf89; color: var(--ava-warning); }
.outline-chip.is-error { background: var(--ava-danger-soft); border-color: #f5a097; color: #b42318; }
.outline-chip.is-answered { background: var(--ava-primary); border-color: var(--ava-primary); color: #fff; }

.ql-toolbar.ql-snow {
    border-color: var(--ava-border-strong) !important;
    border-top-left-radius: var(--ava-radius-sm);
    border-top-right-radius: var(--ava-radius-sm);
    background: #fafbfc;
    font-family: inherit !important;
}

.ql-container.ql-snow {
    border-color: var(--ava-border-strong) !important;
    border-bottom-left-radius: var(--ava-radius-sm);
    border-bottom-right-radius: var(--ava-radius-sm);
    font-family: inherit !important;
    font-size: .9375rem !important;
    background: var(--ava-surface);
}

.rich-editor-wrapper.is-invalid .ql-toolbar.ql-snow,
.rich-editor-wrapper.is-invalid .ql-container.ql-snow { border-color: #f5a097 !important; }

.ql-editor.ql-blank::before { color: var(--ava-subtle) !important; font-style: normal !important; }

/* --------------------------------------------------------------------------
   Assessment taking (student)
   -------------------------------------------------------------------------- */

.answer-option {
    display: flex;
    align-items: flex-start;
    gap: .875rem;
    padding: .875rem 1rem;
    border: 1px solid var(--ava-border-strong);
    border-radius: var(--ava-radius-sm);
    background: var(--ava-surface);
    cursor: pointer;
    transition: border-color .15s ease, background-color .15s ease, box-shadow .15s ease;
    margin: 0;
}

.answer-option + .answer-option { margin-top: .5rem; }
.answer-option:hover { border-color: var(--ava-primary-focus); background: var(--ava-primary-softer); }

.answer-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.answer-option .option-letter { margin-top: -.0625rem; }

.answer-option:has(input:checked) {
    border-color: var(--ava-primary);
    background: var(--ava-primary-soft);
    box-shadow: 0 0 0 1px var(--ava-primary);
}

.answer-option:has(input:checked) .option-letter { background: var(--ava-primary); color: #fff; }
.answer-option:has(input:focus-visible) { box-shadow: 0 0 0 4px rgba(var(--ava-primary-rgb), .2); }
.answer-option.is-disabled { cursor: default; }

.answer-option .option-text { padding-top: .125rem; }

.question-kind {
    font-size: .75rem;
    font-weight: 500;
    color: var(--ava-muted);
    display: inline-flex;
    align-items: center;
    gap: .25rem;
}

.review-option {
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    padding: .75rem 1rem;
    border: 1px solid var(--ava-border);
    border-radius: var(--ava-radius-sm);
    background: var(--ava-surface);
}

.review-option + .review-option { margin-top: .5rem; }
.review-option.is-correct { border-color: #a6dcc5; background: var(--ava-success-soft); }
.review-option.is-wrong { border-color: #f5c2bd; background: var(--ava-danger-soft); }
.review-option.is-correct .option-letter { background: var(--ava-success); color: #fff; }
.review-option.is-wrong .option-letter { background: var(--ava-danger); color: #fff; }

.score-ring {
    --value: 0;
    --color: var(--ava-primary);
    width: 7.5rem;
    height: 7.5rem;
    border-radius: 50%;
    background: conic-gradient(var(--color) calc(var(--value) * 1%), #eaecf0 0);
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

.score-ring::before {
    content: "";
    grid-area: 1 / 1;
    width: 6rem;
    height: 6rem;
    border-radius: 50%;
    background: var(--ava-surface);
}

.score-ring > span {
    grid-area: 1 / 1;
    position: relative;
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -.02em;
    font-variant-numeric: tabular-nums;
}

.score-ring.is-success { --color: var(--ava-success); }
.score-ring.is-danger { --color: var(--ava-danger); }
.score-ring.is-sm { width: 3rem; height: 3rem; }
.score-ring.is-sm::before { width: 2.375rem; height: 2.375rem; }
.score-ring.is-sm > span { font-size: .75rem; }

/* --------------------------------------------------------------------------
   Course player (student)
   -------------------------------------------------------------------------- */

.course-hero {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    padding: 1.5rem;
}

.course-shell {
    display: grid;
    grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
    gap: 1.5rem;
    align-items: start;
}

.course-sidebar {
    position: sticky;
    top: 1.5rem;
    max-height: calc(100vh - 3rem);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.course-sidebar .course-outline { overflow-y: auto; }

.outline-module + .outline-module { border-top: 1px solid var(--ava-border); }

.outline-module-toggle {
    width: 100%;
    border: 0;
    background: none;
    text-align: left;
    padding: .875rem 1rem;
    display: flex;
    align-items: center;
    gap: .625rem;
    color: var(--ava-text);
}

.outline-module-toggle:hover { background: #fafbfc; }
.outline-module-toggle .module-chevron { color: var(--ava-subtle); transition: transform .2s ease; }
.outline-module-toggle:not(.collapsed) .module-chevron { transform: rotate(90deg); }

.outline-item {
    width: 100%;
    border: 0;
    background: none;
    text-align: left;
    display: flex;
    align-items: flex-start;
    gap: .625rem;
    padding: .5625rem 1rem .5625rem 2.25rem;
    color: #475467;
    font-size: .875rem;
    position: relative;
}

.outline-item:hover { background: #f9fafb; color: var(--ava-text); }

.outline-item.active {
    background: var(--ava-primary-soft);
    color: var(--ava-primary-emphasis);
    font-weight: 500;
}

.outline-item.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--ava-primary);
}

.outline-status {
    width: 1.125rem;
    height: 1.125rem;
    border-radius: 50%;
    border: 1.5px solid #d0d5dd;
    flex-shrink: 0;
    margin-top: .125rem;
    display: grid;
    place-items: center;
    font-size: .6875rem;
    color: #fff;
    background: var(--ava-surface);
}

.outline-item.is-done .outline-status { background: var(--ava-success); border-color: var(--ava-success); }
.outline-item.is-done .outline-status::before { content: "\F26E"; font-family: "bootstrap-icons"; font-weight: 700; }
.outline-item.is-retry .outline-status { border-color: var(--ava-warning); background: var(--ava-warning-soft); }

.activity-panel { display: none; }
.activity-panel.active { display: block; animation: fade-in .2s ease; }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.activity-document-frame {
    width: 100%;
    height: min(78vh, 900px);
    min-height: 560px;
}

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

.course-card:hover { box-shadow: var(--ava-shadow); transform: translateY(-2px); }

.course-card .course-cover {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--ava-primary-soft) 0%, var(--ava-primary-tint) 50%, var(--ava-primary-softer) 100%);
    display: grid;
    place-items: center;
    color: var(--ava-primary-muted);
    font-size: 2rem;
    overflow: hidden;
}

.course-card .course-cover img { width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 991.98px) {
    .course-shell { grid-template-columns: 1fr; }
    .course-sidebar { position: static; max-height: none; }
    .activity-document-frame { height: 70vh; min-height: 420px; }
    .course-hero { flex-direction: column; align-items: flex-start; }
}

/* --------------------------------------------------------------------------
   Auth
   -------------------------------------------------------------------------- */

.auth-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.auth-aside {
    background: linear-gradient(150deg, var(--ava-primary-dark) 0%, var(--ava-primary-hover) 55%, var(--ava-primary-light) 100%);
    color: #fff;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.auth-aside::after {
    content: "";
    position: absolute;
    width: 520px;
    height: 520px;
    right: -180px;
    bottom: -180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, .14), transparent 70%);
}

.auth-aside h2 { color: #fff; font-size: 2rem; line-height: 1.2; max-width: 18ch; }
.auth-aside p { color: rgba(255, 255, 255, .78); max-width: 42ch; }

.auth-feature {
    display: flex;
    gap: .75rem;
    align-items: flex-start;
    color: rgba(255, 255, 255, .9);
    font-size: .9375rem;
}

.auth-feature .bi {
    width: 2rem;
    height: 2rem;
    border-radius: .5rem;
    background: rgba(255, 255, 255, .14);
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

.auth-form-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.25rem;
    background: var(--ava-surface);
}

.auth-form { width: 100%; max-width: 380px; }

@media (max-width: 991.98px) {
    .auth-shell { grid-template-columns: 1fr; }
    .auth-aside { display: none; }
    .auth-form-wrap { background: var(--ava-bg); }
}

.password-toggle {
    position: absolute;
    right: .375rem;
    top: 50%;
    transform: translateY(-50%);
}

/* --------------------------------------------------------------------------
   Misc
   -------------------------------------------------------------------------- */

.check-list {
    max-height: 340px;
    overflow-y: auto;
    border: 1px solid var(--ava-border-strong);
    border-radius: var(--ava-radius-sm);
}

.check-list-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .625rem .875rem;
    border-bottom: 1px solid var(--ava-border);
    cursor: pointer;
    margin: 0;
}

.check-list-item:last-child { border-bottom: 0; }
.check-list-item:hover { background: #fafbfc; }
.check-list-item:has(input:checked) { background: var(--ava-primary-soft); }
.check-list-item .form-check-input { margin: 0; flex-shrink: 0; }
.check-list-item.is-hidden { display: none; }

.enrolled-chip {
    display: inline-flex;
    align-items: center;
    gap: .25rem;
    padding: .1875rem .25rem .1875rem .625rem;
    border-radius: 999px;
    background: #f2f4f7;
    font-size: .8125rem;
    color: #344054;
    margin: .125rem .25rem .125rem 0;
}

.enrolled-chip button {
    border: 0;
    background: none;
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: var(--ava-subtle);
    padding: 0;
    font-size: .875rem;
}

.enrolled-chip button:hover { background: var(--ava-danger-soft); color: var(--ava-danger); }

.kbd-hint {
    font-size: .6875rem;
    color: var(--ava-subtle);
    border: 1px solid var(--ava-border);
    border-radius: .25rem;
    padding: 0 .3125rem;
    background: #fafbfc;
}

.error-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 2rem;
    text-align: center;
}

.error-page .error-code {
    font-size: 4.5rem;
    font-weight: 700;
    letter-spacing: -.04em;
    color: var(--ava-primary);
    line-height: 1;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Student picker (async search) */
.picker-results { max-height: 320px; overflow-y: auto; }
.picker-results.show { display: block; }
.picker-results .dropdown-item { white-space: normal; }
.picker-results .dropdown-item.is-active { background: var(--ava-primary-soft); color: var(--ava-primary-emphasis); }
.picker-results .picker-hint { padding: .5rem .75rem; font-size: .8125rem; color: var(--ava-muted); }
.picker-selected { display: flex; flex-wrap: wrap; gap: .375rem; }
.picker-selected .enrolled-chip { margin: 0; background: var(--ava-primary-soft); color: var(--ava-primary-emphasis); }

/* --------------------------------------------------------------------------
   Collapsible sidebar (desktop) and focus mode
   -------------------------------------------------------------------------- */

.sidebar-collapse-btn {
    position: absolute;
    top: 1.375rem;
    right: .75rem;
    color: var(--ava-subtle);
}

.app-sidebar, .app-main { transition: width .2s ease, margin-left .2s ease, transform .25s ease; }

@media (min-width: 992px) {
    html.sidebar-collapsed { --ava-sidebar-width: 76px; }

    html.sidebar-collapsed .sidebar-label,
    html.sidebar-collapsed .sidebar-count,
    html.sidebar-collapsed .sidebar-section { display: none !important; }

    html.sidebar-collapsed .app-brand { justify-content: center; padding: 1.25rem .5rem .5rem; }

    html.sidebar-collapsed .sidebar-collapse-btn {
        position: static;
        margin: 0 auto .5rem;
        display: flex;
    }

    html.sidebar-collapsed .sidebar-collapse-btn .bi { transform: scaleX(-1); }
    html.sidebar-collapsed .sidebar-nav { padding: .5rem .625rem; }
    html.sidebar-collapsed .sidebar-nav .sidebar-link { justify-content: center; padding: .6875rem; margin-bottom: .25rem; position: relative; }
    html.sidebar-collapsed .sidebar-nav .sidebar-link .bi { font-size: 1.1875rem; }

    html.sidebar-collapsed .sidebar-nav .sidebar-link:has(.sidebar-count)::after {
        content: "";
        position: absolute;
        top: .5rem;
        right: .5rem;
        width: .5rem;
        height: .5rem;
        border-radius: 50%;
        background: var(--ava-warning);
    }

    html.sidebar-collapsed .sidebar-user { flex-direction: column; padding: .75rem .5rem; gap: .5rem; }

    html.focus-mode { --ava-sidebar-width: 0px; }
    html.focus-mode .app-sidebar { transform: translateX(-100%); }
    html.focus-mode .app-content.is-wide { max-width: none; }
}

/* --------------------------------------------------------------------------
   Course player: collapsible outline
   -------------------------------------------------------------------------- */

.player-toolbar {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1rem;
}

.player-toolbar .player-position {
    font-size: .8125rem;
    color: var(--ava-muted);
    font-variant-numeric: tabular-nums;
}

.course-shell { transition: grid-template-columns .2s ease; }

.course-shell.is-outline-collapsed { grid-template-columns: 0 minmax(0, 1fr); gap: 0; }
.course-shell.is-outline-collapsed .course-sidebar { visibility: hidden; opacity: 0; pointer-events: none; }

.course-sidebar .card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: .5rem; }

.outline-search { padding: .75rem 1rem; border-bottom: 1px solid var(--ava-border); }
.outline-search .form-control { font-size: .8125rem; padding-top: .4375rem; padding-bottom: .4375rem; }
.outline-item.is-filtered-out, .outline-module.is-filtered-out { display: none; }

@media (max-width: 991.98px) {
    .course-shell.is-outline-collapsed { grid-template-columns: 1fr; }
    .course-shell.is-outline-collapsed .course-sidebar { display: none; }
}
.app-sidebar .app-brand { padding-right: 3.25rem; }

.meta-list > a { display: inline-flex; align-items: center; gap: .3125rem; }
.reorder-group { opacity: 0; transition: opacity .15s ease; }
.item-row:hover .reorder-group, .module-header:hover .reorder-group, .reorder-group:focus-within { opacity: 1; }
@media (hover: none) { .reorder-group { opacity: 1; } }
.app-brand small { white-space: nowrap; }
.btn-ghost { --bs-btn-disabled-border-color: transparent; --bs-btn-disabled-bg: transparent; --bs-btn-disabled-color: #d0d5dd; }

@media (min-width: 992px) {
    html.focus-mode .app-sidebar { width: 264px; transform: translateX(-100%); visibility: hidden; }
}

@media (max-width: 991.98px) {
    .course-shell .course-sidebar,
    .course-shell.is-outline-collapsed .course-sidebar {
        display: flex;
        visibility: visible;
        opacity: 1;
        pointer-events: auto;
        position: fixed;
        top: 0;
        bottom: 0;
        right: 0;
        width: min(380px, 92vw);
        max-height: none;
        z-index: 1045;
        border-radius: 0;
        transform: translateX(105%);
        transition: transform .25s ease;
    }

    .course-shell.is-outline-open .course-sidebar { transform: none; box-shadow: var(--ava-shadow-lg); }

    .outline-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(16, 24, 40, .4);
        z-index: 1040;
        opacity: 0;
        pointer-events: none;
        transition: opacity .2s ease;
    }

    .course-shell.is-outline-open .outline-backdrop { opacity: 1; pointer-events: auto; }
    .course-sidebar .js-toggle-outline .bi::before { content: "\F659"; }
}

@media (min-width: 992px) {
    .outline-backdrop { display: none; }
}

.modal .stat-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 1.25rem;
    background: var(--ava-primary-soft);
    color: var(--ava-primary);
}

.modal .stat-icon.is-danger { background: var(--ava-danger-soft); color: var(--ava-danger); }
.modal .stat-icon.is-success { background: var(--ava-success-soft); color: var(--ava-success); }

/* Institution brand (logo / name) */
.app-brand-inner { display: flex; align-items: center; gap: .625rem; min-width: 0; }
.app-brand-logo { max-height: 2.25rem; max-width: 160px; width: auto; object-fit: contain; flex-shrink: 0; }
.app-brand-inner.logo-only .app-brand-logo { max-height: 2.5rem; max-width: 180px; }
.app-brand-text { min-width: 0; line-height: 1.2; }
.app-brand-name { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.app-brand-mark { background: linear-gradient(135deg, var(--ava-primary-light), var(--ava-primary-hover)); }
.app-topbar .app-brand-logo { max-height: 1.875rem; max-width: 140px; }
.auth-aside .app-brand-logo { max-height: 2.75rem; max-width: 200px; background: #fff; padding: .375rem .5rem; border-radius: .5rem; }

@media (min-width: 992px) {
    html.sidebar-collapsed .app-brand-logo { max-width: 2.5rem; max-height: 2.5rem; object-fit: cover; object-position: left center; border-radius: .5rem; }
}

.auth-aside { background: linear-gradient(150deg, var(--ava-primary-dark) 0%, var(--ava-primary-hover) 55%, var(--ava-primary-light) 100%); }
[hidden] { display: none !important; }

/* Logo next to the name: keep it compact so the name stays readable */
.app-brand-inner.has-logo:not(.logo-only) .app-brand-logo { max-width: 2.75rem; max-height: 2.25rem; }
.app-brand-text small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.app-sidebar .app-brand-inner { max-width: 100%; }

@media (min-width: 992px) {
    html.sidebar-collapsed .app-brand-inner .app-brand-logo,
    html.sidebar-collapsed .app-brand-inner.logo-only .app-brand-logo {
        width: 2.5rem;
        height: 2.5rem;
        max-width: none;
        max-height: none;
        object-fit: cover;
        object-position: left center;
        border-radius: .625rem;
    }
}