/* ===== 数字博物馆公共主题层 ===== */

body {
    background: var(--museum-paper);
    color: var(--museum-ink);
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.9fr);
    align-items: end;
    gap: 64px;
    max-width: 1180px;
    margin: 0 auto 44px;
    padding: 76px 0 54px;
    text-align: left;
    border-bottom: 1px solid var(--museum-line);
}

.hero__eyebrow {
    display: block;
    margin-bottom: 20px;
    color: var(--museum-accent);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
}

.hero h1 {
    margin-bottom: 14px;
    color: var(--museum-ink);
    font-family: var(--font-display);
    font-size: clamp(3.8rem, 9vw, 7rem);
    font-weight: 700;
    letter-spacing: -0.055em;
    line-height: 1;
}

.hero p {
    color: var(--museum-muted);
    font-size: 1rem;
    font-style: normal;
    letter-spacing: 0;
}

.hero__aside {
    display: grid;
    grid-template-columns: auto auto;
    align-items: baseline;
    column-gap: 16px;
    border-left: 1px solid var(--museum-line-strong);
    padding-left: 32px;
}

.hero__aside-label {
    color: var(--museum-muted);
    font-size: 0.78rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero__aside strong {
    color: var(--museum-accent);
    font-family: var(--font-display);
    font-size: 2.2rem;
}

.hero__aside p {
    grid-column: 1 / -1;
    margin-top: 16px;
    color: var(--museum-ink-soft);
    line-height: 1.8;
}

.container {
    color: var(--museum-ink);
}

.info-page__content,
.login-card {
    background: var(--museum-surface);
    border-color: var(--museum-line);
    box-shadow: var(--shadow-sm);
}

.info-page__content h1,
.info-page__content h2,
.login-card h1 {
    color: var(--museum-ink);
}

.info-page__content h2 {
    border-top: 1px solid var(--museum-line);
    padding-top: 22px;
}

.info-page__content h2:first-child {
    border-top: none;
    padding-top: 0;
}

.info-page__content p,
.info-page__content li,
.login-card__intro,
.login-form label {
    color: var(--museum-ink-soft);
}

.info-page__note {
    color: var(--museum-accent) !important;
}

.info-page__link,
.login-card__back {
    color: var(--museum-accent);
}

.info-contact-card {
    background: var(--museum-surface-muted);
    border-color: var(--museum-line);
}

.info-contact-card__name {
    color: var(--museum-accent);
}

.info-contact-card__wechat {
    color: var(--museum-ink);
}

.info-submit-form input,
.info-submit-form textarea,
.login-form input {
    background: var(--museum-surface-muted);
    border-color: var(--museum-line);
    color: var(--museum-ink);
}

.info-submit-form button,
.login-form button {
    background: var(--museum-accent);
    color: #fff;
}

.info-submit-form button:hover,
.login-form button:hover {
    background: #8f2f22;
}

.function-bar {
    margin: 0 0 36px;
}

.welcome-message {
    max-width: 520px;
    margin: 24px auto 32px;
    background: var(--museum-accent-soft);
    border: 1px solid var(--museum-line);
    border-radius: var(--radius-md);
    color: var(--museum-accent);
}

.search-trigger-box {
    min-height: 48px;
    padding: 11px 16px;
    background: var(--museum-surface);
    border: 1px solid var(--museum-line);
    border-radius: var(--radius-md);
    color: var(--museum-muted);
    box-shadow: none;
}

.search-trigger-box:hover {
    background: var(--museum-surface);
    border-color: var(--museum-accent);
    color: var(--museum-ink);
    box-shadow: none;
}

.random-section button,
.random-trigger-btn {
    min-height: 48px;
    padding: 10px 20px;
    background: var(--museum-accent);
    color: #fff;
    border-radius: var(--radius-md);
    box-shadow: none;
}

.random-section button:hover,
.random-trigger-btn:hover {
    background: #8f2f22;
    box-shadow: none;
}

.extra-categories {
    justify-content: flex-start;
    gap: 8px;
    margin: 28px 0 14px;
}

.extra-btn {
    background: transparent;
    color: var(--museum-ink-soft);
    border: 1px solid var(--museum-line);
    border-radius: var(--radius-md);
    padding: 10px 18px;
    font-size: 0.95rem;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    box-shadow: none;
}

.extra-btn:hover {
    background: var(--museum-accent-soft);
    border-color: var(--museum-accent);
    color: var(--museum-accent);
    transform: none;
}

.extra-btn.active {
    background: var(--museum-accent);
    border-color: var(--museum-accent);
    color: #fff;
    box-shadow: none;
    animation: none;
}

.grade-submenu {
    margin: 4px 0 28px;
    padding-top: 14px;
    text-align: left;
}

.grade-submenu::before {
    width: 48px;
    margin: 0 0 12px;
    background: var(--museum-line-strong);
    opacity: 1;
}

.grade-buttons {
    justify-content: flex-start;
    gap: 4px;
}

.grade-btn {
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    color: var(--museum-muted);
}

.grade-btn:hover {
    background: var(--museum-accent-soft);
    color: var(--museum-accent);
}

.grade-btn.active {
    color: var(--museum-accent);
    border-bottom-color: var(--museum-accent);
    background: transparent;
}

.record-sort-container,
.character-sort-container {
    padding: 8px 0;
}

.record-sort-container select,
.character-sort-container select,
.sort-order-btn,
.layout-toggle-btn {
    background: var(--museum-surface);
    border: 1px solid var(--museum-line);
    border-radius: var(--radius-md);
    color: var(--museum-ink-soft);
}

.record-sort-container select option,
.character-sort-container select option {
    background: var(--museum-surface);
    color: var(--museum-ink);
}

.sort-order-btn:hover,
.layout-toggle-btn:hover {
    background: var(--museum-accent-soft);
    border-color: var(--museum-accent);
    color: var(--museum-accent);
}

.timeline {
    max-width: 980px;
}

.timeline::before {
    left: 28px;
    width: 1px;
    background: var(--museum-line-strong);
}

.timeline-event {
    margin-bottom: 28px;
}

.timeline-event-icon {
    left: 20px;
    width: 17px;
    height: 17px;
    background: var(--museum-accent);
    border-radius: 50%;
    transform: none;
    box-shadow: 0 0 0 4px var(--museum-accent-soft);
}

.timeline-event-copy {
    background: var(--museum-surface);
    border: 1px solid var(--museum-line);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    transition: border-color var(--duration-normal) var(--ease-out), background-color var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out);
}

.timeline-event-copy.visible {
    opacity: 1;
}

.timeline-event-copy:hover {
    background: var(--museum-surface);
    border-color: var(--museum-accent);
    box-shadow: none !important;
    transform: translateX(3px);
}

.timeline-event-thumbnail {
    color: var(--museum-accent);
    background: var(--museum-surface-muted);
    border: none;
    border-radius: var(--radius-sm);
    padding: 4px 10px;
    font-family: var(--font-ui);
}

.timeline-event-copy h3 {
    color: var(--museum-ink);
    font-size: 1.55rem;
}

.timeline-event-copy .content {
    color: var(--museum-ink-soft);
}

.timeline-event-copy .honorific {
    color: var(--museum-accent);
    border-top-color: var(--museum-line);
}

.poem {
    color: var(--museum-accent);
    border-left: 1px solid var(--museum-accent);
}

.characters-grid {
    gap: 16px;
}

.character-card {
    background: var(--museum-surface);
    border: 1px solid var(--museum-line);
    border-radius: var(--radius-md);
    padding: 22px;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    box-shadow: none;
}

.character-card:hover {
    background: var(--museum-accent-soft);
    border-color: var(--museum-accent);
    transform: translateY(-2px);
    box-shadow: none !important;
}

.char-name {
    border-left: 1px solid var(--museum-accent);
    padding-left: 10px;
    color: var(--museum-accent);
}

.char-nicknames {
    color: var(--museum-muted);
}

.char-desc {
    color: var(--museum-ink-soft);
}

.stats-container {
    max-width: 980px;
}

.stats-tabs {
    justify-content: flex-start;
    gap: 4px;
}

.stats-tab {
    border-radius: var(--radius-sm);
    color: var(--museum-muted);
}

.stats-tab:hover {
    background: var(--museum-accent-soft);
    color: var(--museum-accent);
}

.stats-tab.active {
    color: var(--museum-accent);
    border-bottom-color: var(--museum-accent);
    background: transparent;
}

.stats-charts {
    background: var(--museum-surface);
    border: 1px solid var(--museum-line);
    border-radius: var(--radius-md);
    box-shadow: none;
}

.graph-toggle-container {
    justify-content: flex-start;
    margin: 8px 0 20px;
}

.graph-toggle-btn {
    color: var(--museum-muted);
    border-radius: var(--radius-sm);
}

.graph-toggle-btn:hover {
    background: var(--museum-accent-soft);
    color: var(--museum-accent);
}

.history-modal .modal-overlay {
    background: rgba(23, 23, 20, 0.45);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.history-modal .modal-container {
    background: var(--museum-surface);
    border: 1px solid var(--museum-line);
    border-left: 1px solid var(--museum-accent);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.history-modal .modal-close-btn {
    color: var(--museum-accent);
}

.detail-card h2,
.notes-section h3,
.related-chars-section h3,
.related-records-section h3,
.search-modal-header h3,
.search-results-header h3,
.random-record-display h4 {
    color: var(--museum-accent);
}

.notes-content,
#graphNetwork,
.random-record-display,
.result-item-compact,
.search-result-item {
    background: var(--museum-surface-muted);
    border-color: var(--museum-line);
    border-radius: var(--radius-md);
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

.random-record-display {
    border-left: 1px solid var(--museum-accent);
}

.search-trigger-box input,
.search-bar-inline .inner-search-input,
.character-selector select,
.date-input,
.comment-input {
    background: var(--museum-surface);
    border-color: var(--museum-line);
    border-radius: var(--radius-md);
    color: var(--museum-ink);
}

.search-bar-inline .inner-search-input:focus,
input:focus,
textarea:focus,
select:focus {
    border-color: var(--museum-accent) !important;
    box-shadow: 0 0 0 3px var(--museum-accent-soft) !important;
}

.search-action-btn,
.comment-submit-btn,
.random-roll-btn {
    border-radius: var(--radius-md);
    box-shadow: none;
}

.search-action-btn.primary,
.comment-submit-btn,
.random-roll-btn {
    background: var(--museum-accent);
    color: #fff;
}

.search-action-btn.primary:hover,
.comment-submit-btn:hover,
.random-roll-btn:hover {
    background: #8f2f22;
    box-shadow: none;
}

.filter-option,
.filter-btn {
    border-radius: var(--radius-md);
}

.result-title-compact,
.result-title {
    color: var(--museum-accent);
}

.result-grade-tag,
.result-grade {
    background: var(--museum-accent-soft);
    color: var(--museum-accent);
    border-radius: var(--radius-sm);
}

.comment-form,
.comment-item {
    background: transparent;
}

.comment-item {
    border-left: 1px solid var(--museum-line-strong);
    border-radius: 0;
}

.comment-author {
    color: var(--museum-accent);
}

.comment-text {
    color: var(--museum-ink-soft);
}

footer {
    border-top-color: var(--museum-line);
}

.back-to-top {
    background: var(--museum-accent);
    color: #fff;
    box-shadow: none;
}

.back-to-top:hover {
    background: #8f2f22;
    box-shadow: none;
}

.skeleton-card {
    background: var(--museum-surface-muted);
    border-color: var(--museum-line);
    border-radius: var(--radius-md);
    animation: museum-skeleton-pulse 1.6s var(--ease-out) infinite;
}

@keyframes museum-skeleton-pulse {
    0%,
    100% {
        opacity: 0.55;
    }

    50% {
        opacity: 1;
    }
}

.hero h1 {
    background: none;
    -webkit-background-clip: border-box;
    background-clip: border-box;
    color: var(--museum-ink);
    animation: none;
}

@media (max-width: 600px) {
    .hero {
        display: block;
        margin-bottom: 32px;
        padding: 52px 0 36px;
    }

    .hero__aside {
        margin-top: 36px;
        padding-left: 20px;
    }

    .extra-categories {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 4px;
    }

    .extra-btn {
        flex: 0 0 auto;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-event-icon {
        left: 12px;
    }

    .timeline-event-copy {
        padding: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .timeline-event-copy,
    .character-card,
    .extra-btn,
    .random-section button {
        transition: none;
    }
}

/* ===== 参考图式页面导航 ===== */
.page-nav {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-bottom: 0;
    background: rgba(247, 247, 245, 0.98);
    border-bottom: 1px solid var(--museum-line);
    border-radius: 0;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

.page-nav__links {
    display: grid;
    grid-template-columns: minmax(180px, 1fr) auto minmax(180px, 1fr);
    align-items: center;
    width: 100%;
    max-width: 1280px;
    min-height: 80px;
    margin: 0 auto;
    padding: 0 44px;
    gap: 24px;
    overflow: visible;
}

.page-nav__brand {
    justify-self: start;
    color: var(--museum-ink);
    font-family: var(--font-ui);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
    text-decoration: none;
    white-space: nowrap;
}

.page-nav__brand:hover {
    color: var(--museum-accent);
}

.page-nav__primary {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    gap: 32px;
}

.page-nav__primary .nav-btn {
    flex: 0 0 auto;
    min-width: auto;
    min-height: 44px;
    padding: 12px 0 10px;
    background: transparent;
    border: 0;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    color: var(--museum-muted);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.25;
    white-space: nowrap;
}

.page-nav__primary .nav-btn:hover {
    background: transparent;
    border-bottom-color: var(--museum-line-strong);
    color: var(--museum-ink);
    transform: none;
}

.page-nav__primary .nav-btn[aria-current="page"] {
    background: transparent;
    border-bottom-color: var(--museum-accent);
    color: var(--museum-accent);
}

.page-nav__login {
    justify-self: end;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 110px;
    min-height: 52px;
    padding: 12px 24px;
    background: #1d1f1c;
    border: 1px solid #1d1f1c;
    border-radius: 11px;
    color: #fff;
    font-family: var(--font-ui);
    font-size: 18px;
    font-weight: 700;
    line-height: 1;
    text-decoration: none;
    transition: background-color var(--duration-normal) var(--ease-out), border-color var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out);
    white-space: nowrap;
}

.page-nav__login:hover {
    background: #30322f;
    border-color: #30322f;
    color: #fff;
    transform: translateY(-1px);
}

.page-nav__login:focus-visible {
    outline: 2px solid var(--museum-accent);
    outline-offset: 3px;
}

@media (max-width: 700px) {
    .page-nav__links {
        grid-template-columns: auto minmax(0, 1fr) auto;
        min-height: 64px;
        padding: 0 16px;
        gap: 16px;
    }

    .page-nav__brand {
        font-size: 16px;
    }

    .page-nav__primary {
        justify-content: flex-start;
        gap: 24px;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .page-nav__primary::-webkit-scrollbar {
        display: none;
    }

    .page-nav__primary .nav-btn {
        font-size: 14px;
    }

    .page-nav__login {
        min-width: 80px;
        min-height: 44px;
        padding: 10px 16px;
        border-radius: 9px;
        font-size: 15px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .page-nav__brand,
    .page-nav__primary .nav-btn,
    .page-nav__login {
        transition: none;
    }
}

/* ===== 关系图谱展示层 ===== */
.graph-toggle-btn {
    min-height: 42px;
    padding: 9px 16px;
    background: var(--museum-surface);
    border: 1px solid var(--museum-line);
    border-radius: var(--radius-md);
    color: var(--museum-ink-soft);
}

.graph-toggle-btn:hover {
    background: var(--museum-accent-soft);
    border-color: var(--museum-accent);
    color: var(--museum-accent);
}

.graph-modal .modal-container {
    width: min(94vw, 960px);
    max-width: 960px;
    height: min(82vh, 760px);
    max-height: 760px;
    padding: 28px 32px 24px;
}

.graph-modal__header {
    margin-bottom: 16px;
}

.graph-modal__eyebrow {
    color: var(--museum-accent);
}

.graph-modal__header h3 {
    color: var(--museum-ink);
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 600;
}

.graph-modal__description {
    color: var(--museum-muted);
}

#graphNetwork {
    min-height: 360px;
    background: var(--museum-paper);
    border-color: var(--museum-line);
    border-radius: var(--radius-md);
}

.graph-legend {
    color: var(--museum-ink-soft);
}

.graph-legend-dot--node {
    background: var(--museum-accent);
    border-color: var(--museum-accent);
}

.graph-legend-dot--edge {
    background: var(--museum-accent);
}

.graph-modal__actions {
    display: flex;
    justify-content: center;
    margin-top: 16px;
}

.graph-modal__actions button {
    min-height: 42px;
    padding: 9px 16px;
    border-radius: var(--radius-md);
}

.graph-empty {
    color: var(--museum-muted);
}

@media (max-width: 600px) {
    .graph-modal .modal-container {
        width: calc(100vw - 24px);
        height: calc(100dvh - 24px);
        padding: 24px 18px 18px;
    }

    #graphNetwork {
        min-height: 280px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .graph-toggle-btn,
    .graph-modal__actions button {
        transition: none;
    }
}