html, body {
    background: #f5f7fb;
    color: #172033;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

h1:focus {
    outline: none;
}

a, .btn-link {
    color: #0071c1;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.content {
    padding: 1.1rem 1.5rem 3rem;
}

.app-header {
    border-bottom: 1px solid #202b43;
    background: #111a2e;
    color: #fff;
}

.app-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(1200px, calc(100% - 3rem));
    min-height: 4.5rem;
    margin: 0 auto;
}

.app-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: #fff;
    font-size: 1.0625rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.app-brand:hover {
    color: #fff;
}

.app-brand-mark {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 0.5rem;
    background: #4f8cff;
    font-family: Georgia, serif;
    font-size: 1.25rem;
}

.app-navigation {
    display: flex;
    gap: 0.25rem;
}

.app-navigation a {
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    color: #cbd5e1;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
}

.app-navigation a:hover,
.app-navigation a.active {
    background: #202b43;
    color: #fff;
}

.event-page {
    max-width: 1200px;
    margin: 0 auto;
}

.page-heading {
    margin-bottom: 2rem;
}

.eyebrow {
    margin: 0 0 0.35rem;
    color: #3978e8;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

h1 {
    margin: 0;
    color: #111a2e;
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 750;
    letter-spacing: -0.04em;
}

.page-introduction {
    max-width: 42rem;
    margin: 0.5rem 0 0;
    color: #61708b;
}

.create-timeline-panel {
    display: grid;
    grid-template-columns: minmax(16rem, 1fr) minmax(22rem, 1.2fr);
    gap: 2rem;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
    border: 1px solid #dae1ee;
    border-radius: 0.75rem;
    background: #fff;
    box-shadow: 0 0.75rem 2rem rgb(29 44 76 / 7%);
}

.create-timeline-panel h2 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 750;
}

.create-timeline-panel p {
    margin: 0.4rem 0 0;
    color: #61708b;
}

.topic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
    gap: 1rem;
}

.topic-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.8rem;
    min-height: 9rem;
    padding: 1.25rem;
    border: 1px solid #dae1ee;
    border-radius: 0.75rem;
    background: #fff;
    box-shadow: 0 0.25rem 0.75rem rgb(29 44 76 / 5%);
    color: inherit;
    text-decoration: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.topic-card:hover {
    border-color: #4f8cff;
    box-shadow: 0 0.75rem 1.5rem rgb(29 44 76 / 12%);
    color: inherit;
    transform: translateY(-2px);
}

.topic-card-icon {
    display: grid;
    width: 2rem;
    height: 2rem;
    place-items: center;
    border-radius: 0.5rem;
    background: #eaf1ff;
    color: #3978e8;
    font-weight: 800;
}

.topic-card-title {
    align-self: center;
    font-size: 1.05rem;
    font-weight: 750;
}

.topic-card-action {
    grid-column: 1 / -1;
    align-self: end;
    color: #3978e8;
    font-size: 0.875rem;
    font-weight: 700;
}

.event-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
}

.toolbar-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: flex-end;
}

.event-table-surface {
    border: 1px solid #dae1ee;
    border-radius: 0.75rem;
    background: #fff;
    box-shadow: 0 0.25rem 0.75rem rgb(29 44 76 / 5%);
}

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

.event-table > :not(caption) > * > * {
    padding: 1rem;
}

.event-table thead th {
    border-bottom-width: 1px;
    background: #f8faff;
    color: #61708b;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.modal-content {
    border: 0;
    border-radius: 0.75rem;
    box-shadow: 0 1rem 3rem rgb(17 26 46 / 22%);
}

.modal-header,
.modal-footer {
    border-color: #e5eaf3;
}

.timeline-page {
    display: flex;
    flex-direction: column;
    width: 100vw;
    min-height: 100vh;
    margin: -1.1rem calc(50% - 50vw) 0;
    padding: 1.5rem;
}

.event-table .event-date,
.event-table .event-actions {
    white-space: nowrap;
}

.event-table .event-actions {
    width: 1%;
}

.timeline-scroll {
    display: flex;
    flex: 1;
    overflow-x: auto;
    padding: 1rem 0;
    scrollbar-width: none;
}

.timeline-scroll::-webkit-scrollbar {
    display: none;
}

.timeline-top-scroll {
    position: sticky;
    top: 0;
    z-index: 3;
    flex: 0 0 auto;
    height: 1.25rem;
    margin-bottom: 0.5rem;
    overflow-x: scroll;
    overflow-y: hidden;
    background: #f5f7fb;
    scrollbar-color: #4f8cff #e5eaf3;
    scrollbar-width: thin;
}

.timeline-top-scroll::-webkit-scrollbar {
    height: 0.75rem;
}

.timeline-top-scroll::-webkit-scrollbar-track {
    border-radius: 999px;
    background: #e5eaf3;
}

.timeline-top-scroll::-webkit-scrollbar-thumb {
    border: 2px solid #e5eaf3;
    border-radius: 999px;
    background: #4f8cff;
}

.timeline-top-scroll::-webkit-scrollbar-thumb:hover {
    background: #3978e8;
}

.timeline-track {
    flex: 0 0 auto;
    position: relative;
}

.timeline-axis {
    position: absolute;
    top: 50%;
    right: 0;
    left: 0;
    border-top: 6px solid #0d6efd;
}

.timeline-range {
    position: absolute;
    z-index: 1;
    top: calc(50% - 0.25rem);
    height: 0.5rem;
    min-width: 0.5rem;
    border-radius: 999px;
    background: var(--event-colour);
    transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.timeline-range-highlighted {
    box-shadow: 0 0 0 0.3rem color-mix(in srgb, var(--event-colour) 35%, transparent);
    transform: scaleY(1.75);
}

.timeline-connector {
    position: absolute;
    z-index: 1;
    width: 2px;
    background: var(--event-colour);
}

.timeline-event {
    position: relative;
    z-index: 2;
    position: absolute;
    width: 15rem;
    padding: 1rem;
    border: 1px solid var(--event-colour);
    border-left-width: 0.5rem;
    border-radius: 0.375rem;
    background: #fff;
    color: inherit;
    text-align: left;
}

.timeline-event:hover,
.timeline-event:focus {
    box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--event-colour) 20%, transparent);
}

.timeline-date,
.timeline-title,
.timeline-summary {
    display: block;
}

.timeline-date {
    margin-bottom: 0.5rem;
    color: #6c757d;
    font-size: 0.875rem;
    font-weight: 600;
}

.timeline-title {
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.timeline-summary {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.timeline-thumbnail {
    display: block;
    width: 100%;
    height: 7rem;
    margin-bottom: 0.75rem;
    border-radius: 0.25rem;
    object-fit: cover;
}

.event-detail-image {
    display: block;
    width: 100%;
    max-height: 24rem;
    border-radius: 0.375rem;
    object-fit: contain;
}

.event-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.event-thumbnail,
.editor-image {
    border-radius: 0.25rem;
    object-fit: cover;
}

.event-thumbnail {
    width: 3rem;
    height: 2.25rem;
}

.editor-image {
    width: 10rem;
    height: 6rem;
}

@media (max-width: 900px) {
    .event-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .timeline-page {
        padding: 1rem;
    }

    .create-timeline-panel {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 576px) {
    .content {
        padding: 1.5rem 1rem 2rem;
    }

    .app-header-content {
        width: calc(100% - 2rem);
    }

    .event-toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .toolbar-actions {
        justify-content: flex-start;
    }
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid red;
}

.validation-message {
    color: red;
}

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 0.75rem;
        top: 0.5rem;
    }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTYiIGhlaWdodD0iNDkiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIG92ZXJmbG93PSJoaWRkZW4iPjxkZWZzPjxjbGlwUGF0aCBpZD0iY2xpcDAiPjxyZWN0IHg9IjIzNSIgeT0iNTEiIHdpZHRoPSI1NiIgaGVpZ2h0PSI0OSIvPjwvY2xpcFBhdGg+PC9kZWZzPjxnIGNsaXAtcGF0aD0idXJsKCNjbGlwMCkiIHRyYW5zZm9ybT0idHJhbnNsYXRlKC0yMzUgLTUxKSI+PHBhdGggZD0iTTI2My41MDYgNTFDMjY0LjcxNyA1MSAyNjUuODEzIDUxLjQ4MzcgMjY2LjYwNiA1Mi4yNjU4TDI2Ny4wNTIgNTIuNzk4NyAyNjcuNTM5IDUzLjYyODMgMjkwLjE4NSA5Mi4xODMxIDI5MC41NDUgOTIuNzk1IDI5MC42NTYgOTIuOTk2QzI5MC44NzcgOTMuNTEzIDI5MSA5NC4wODE1IDI5MSA5NC42NzgyIDI5MSA5Ny4wNjUxIDI4OS4wMzggOTkgMjg2LjYxNyA5OUwyNDAuMzgzIDk5QzIzNy45NjMgOTkgMjM2IDk3LjA2NTEgMjM2IDk0LjY3ODIgMjM2IDk0LjM3OTkgMjM2LjAzMSA5NC4wODg2IDIzNi4wODkgOTMuODA3MkwyMzYuMzM4IDkzLjAxNjIgMjM2Ljg1OCA5Mi4xMzE0IDI1OS40NzMgNTMuNjI5NCAyNTkuOTYxIDUyLjc5ODUgMjYwLjQwNyA1Mi4yNjU4QzI2MS4yIDUxLjQ4MzcgMjYyLjI5NiA1MSAyNjMuNTA2IDUxWk0yNjMuNTg2IDY2LjAxODNDMjYwLjczNyA2Ni4wMTgzIDI1OS4zMTMgNjcuMTI0NSAyNTkuMzEzIDY5LjMzNyAyNTkuMzEzIDY5LjYxMDIgMjU5LjMzMiA2OS44NjA4IDI1OS4zNzEgNzAuMDg4N0wyNjEuNzk1IDg0LjAxNjEgMjY1LjM4IDg0LjAxNjEgMjY3LjgyMSA2OS43NDc1QzI2Ny44NiA2OS43MzA5IDI2Ny44NzkgNjkuNTg3NyAyNjcuODc5IDY5LjMxNzkgMjY3Ljg3OSA2Ny4xMTgyIDI2Ni40NDggNjYuMDE4MyAyNjMuNTg2IDY2LjAxODNaTTI2My41NzYgODYuMDU0N0MyNjEuMDQ5IDg2LjA1NDcgMjU5Ljc4NiA4Ny4zMDA1IDI1OS43ODYgODkuNzkyMSAyNTkuNzg2IDkyLjI4MzcgMjYxLjA0OSA5My41Mjk1IDI2My41NzYgOTMuNTI5NSAyNjYuMTE2IDkzLjUyOTUgMjY3LjM4NyA5Mi4yODM3IDI2Ny4zODcgODkuNzkyMSAyNjcuMzg3IDg3LjMwMDUgMjY2LjExNiA4Ni4wNTQ3IDI2My41NzYgODYuMDU0N1oiIGZpbGw9IiNGRkU1MDAiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPjwvZz48L3N2Zz4=) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto 0 auto;
}

    .loading-progress circle {
        fill: none;
        stroke: #e0e0e0;
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:last-child {
            stroke: #1b6ec2;
            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
            transition: stroke-dasharray 0.05s ease-in-out;
        }

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

    .loading-progress-text:after {
        content: var(--blazor-load-percentage-text, "Loading");
    }

code {
    color: #c02d76;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}