:root {
    --porcelain-ink: #18344f;
    --porcelain-muted: #55718c;
    --porcelain-blue: #5b8ecf;
    --porcelain-blue-deep: #356fa8;
    --porcelain-line: rgba(104, 154, 199, 0.24);
    --porcelain-surface: rgba(255, 255, 255, 0.84);
    --porcelain-frost: rgba(235, 247, 255, 0.76);
}

html,
body {
    min-height: 100%;
    color: var(--porcelain-ink);
    background:
        radial-gradient(circle at 18% 8%, rgba(183, 226, 245, 0.58), transparent 27rem),
        radial-gradient(circle at 84% 16%, rgba(212, 233, 248, 0.78), transparent 24rem),
        linear-gradient(145deg, #fafdff 0%, #edf7ff 48%, #f8fbff 100%);
    font-family: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

a {
    color: var(--porcelain-blue-deep);
}

h1:focus {
    outline: none;
}

.porcelain-main {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}

.porcelain-main::before {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    content: "";
    background-image:
        linear-gradient(120deg, rgba(94, 142, 195, 0.07) 1px, transparent 1px),
        linear-gradient(30deg, rgba(94, 142, 195, 0.05) 1px, transparent 1px);
    background-size: 58px 58px, 74px 74px;
    mask-image: linear-gradient(to bottom, black, transparent 92%);
}

.content-shell {
    position: relative;
    z-index: 1;
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 88px 0 56px;
}

.decor {
    position: fixed;
    z-index: 0;
    pointer-events: none;
    border: 1px solid rgba(91, 142, 207, 0.2);
    background: rgba(255, 255, 255, 0.28);
    transform: rotate(45deg);
}

.decor-a {
    top: 112px;
    right: 9vw;
    width: 98px;
    height: 98px;
    box-shadow: 0 0 34px rgba(148, 205, 232, 0.26);
}

.decor-b {
    bottom: 120px;
    left: 5vw;
    width: 62px;
    height: 62px;
}

.page-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    gap: 24px;
    align-items: end;
    margin-bottom: 22px;
}

.page-heading.compact {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
}

.page-heading h1,
.page-heading .mud-typography-h1 {
    margin-bottom: 6px;
    font-size: 2.45rem;
    line-height: 1.12;
    letter-spacing: 0;
}

.asset-slot {
    min-height: 128px;
    border: 1px solid var(--porcelain-line);
    border-radius: 8px;
    color: var(--porcelain-muted);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(227, 244, 253, 0.72)),
        repeating-linear-gradient(120deg, transparent 0 12px, rgba(91, 142, 207, 0.08) 12px 13px);
}

.character-slot {
    display: grid;
    place-items: center;
    gap: 4px;
    text-align: center;
    font-size: 0.9rem;
}

.character-slot .mud-icon-root {
    color: var(--porcelain-blue);
    font-size: 2rem;
}

.search-panel,
.admin-panel,
.admin-login-panel,
.song-card,
.empty-state {
    border: 1px solid var(--porcelain-line);
    border-radius: 8px;
    background: var(--porcelain-surface);
    box-shadow: 0 18px 50px rgba(61, 111, 154, 0.11);
    backdrop-filter: blur(16px);
}

.search-panel {
    display: grid;
    gap: 14px;
    margin-bottom: 22px;
    padding: 18px;
}

.active-filter,
.tag-cloud,
.song-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.song-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.song-card {
    display: grid;
    gap: 16px;
    padding: 18px;
}

.song-card-main {
    min-width: 0;
}

.song-card-main h6,
.song-card-main .mud-typography-h6 {
    overflow-wrap: anywhere;
    letter-spacing: 0;
}

.song-card-actions,
.viewer-tag-row,
.admin-add-row,
.admin-actions,
.panel-title-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.viewer-tag-row,
.admin-add-row {
    align-items: stretch;
}

.viewer-tag-row .mud-input-control,
.admin-add-row .mud-input-control {
    flex: 1 1 auto;
}

.loading-row,
.empty-state {
    display: grid;
    place-items: center;
    gap: 12px;
    min-height: 220px;
    padding: 28px;
    text-align: center;
}

.admin-page,
.song-page {
    display: grid;
    gap: 18px;
}

.admin-panel {
    display: grid;
    gap: 16px;
    padding: 18px;
}

.panel-title-row {
    justify-content: space-between;
}

.admin-list,
.tag-admin-list {
    display: grid;
    gap: 12px;
}

.admin-list-item,
.tag-admin-item {
    display: grid;
    gap: 10px;
    padding: 14px;
    border: 1px solid rgba(104, 154, 199, 0.18);
    border-radius: 8px;
    background: rgba(248, 252, 255, 0.68);
}

.admin-list-item.is-hidden {
    opacity: 0.68;
}

.admin-song-tags {
    min-height: 32px;
}

.admin-muted {
    padding: 12px 0;
}

.admin-login-page {
    min-height: calc(100vh - 180px);
    display: grid;
    place-items: center;
}

.admin-login-panel {
    display: grid;
    gap: 18px;
    width: min(420px, 100%);
    padding: 24px;
}

.native-form {
    display: grid;
    gap: 14px;
}

.native-field {
    display: grid;
    gap: 7px;
    color: var(--porcelain-muted);
    font-size: 0.92rem;
}

.native-field input {
    min-height: 48px;
    width: 100%;
    padding: 0 14px;
    border: 1px solid rgba(85, 113, 140, 0.44);
    border-radius: 8px;
    color: var(--porcelain-ink);
    background: rgba(255, 255, 255, 0.72);
    font: inherit;
}

.native-field input:focus {
    outline: 2px solid rgba(91, 142, 207, 0.24);
    border-color: var(--porcelain-blue);
}

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

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    padding: 1rem;
    color: white;
    background: #b32121;
}

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

#blazor-error-ui {
    display: none;
    position: fixed;
    right: 16px;
    bottom: 16px;
    z-index: 10000;
    max-width: min(420px, calc(100% - 32px));
    padding: 12px 16px;
    border-radius: 8px;
    color: white;
    background: #8d2733;
    box-shadow: 0 12px 32px rgba(30, 50, 70, 0.24);
}

#blazor-error-ui .reload {
    margin-left: 8px;
    color: white;
    font-weight: 700;
}

#blazor-error-ui .dismiss {
    margin-left: 12px;
    cursor: pointer;
}

@media (max-width: 900px) {
    .content-shell {
        width: min(100% - 24px, 720px);
        padding-top: 76px;
    }

    .page-heading,
    .page-heading.compact {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .character-slot {
        min-height: 72px;
        display: none;
    }

    .song-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .content-shell {
        width: min(100% - 18px, 480px);
        padding-bottom: 34px;
    }

    .page-heading h1,
    .page-heading .mud-typography-h1 {
        font-size: 1.85rem;
    }

    .search-panel,
    .admin-panel,
    .song-card,
    .admin-login-panel {
        padding: 14px;
    }

    .song-card-actions,
    .viewer-tag-row,
    .admin-add-row,
    .admin-actions {
        flex-wrap: wrap;
    }

    .song-card-actions .mud-button-root,
    .admin-actions .mud-button-root {
        flex: 1 1 136px;
    }
}