* {
    box-sizing: border-box;
}

:root {
    color-scheme: dark;
    --timeline-bg: #07111f;
    --timeline-panel: rgba(10, 19, 36, 0.82);
    --timeline-panel-strong: rgba(13, 24, 44, 0.94);
    --timeline-border: rgba(143, 170, 214, 0.18);
    --timeline-text: #edf2ff;
    --timeline-text-muted: rgba(237, 242, 255, 0.72);
    --timeline-accent: #7dd3fc;
    --timeline-accent-strong: #4f8cff;
    --timeline-shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
    --timeline-max-width: 1480px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Arial, sans-serif;
    color: var(--timeline-text);
    background:
        radial-gradient(circle at top left, rgba(79, 140, 255, 0.18), transparent 34%),
        radial-gradient(circle at top right, rgba(125, 211, 252, 0.16), transparent 28%),
        linear-gradient(180deg, #0b1425 0%, #07111f 52%, #050b15 100%);
}

a {
    color: inherit;
}

.timeline-skip-link {
    position: absolute;
    left: 16px;
    top: -48px;
    padding: 10px 14px;
    border-radius: 10px;
    background: #ffffff;
    color: #07111f;
    text-decoration: none;
    z-index: 20;
    transition: top 0.2s ease;
}

.timeline-skip-link:focus {
    top: 16px;
}

.timeline-shell {
    width: min(100%, var(--timeline-max-width));
    margin: 0 auto;
    padding: 20px;
}

.timeline-header {
    position: sticky;
    top: 12px;
    z-index: 10;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 18px;
    padding: 16px 18px;
    border: 1px solid var(--timeline-border);
    border-radius: 22px;
    background: rgba(9, 17, 31, 0.88);
    backdrop-filter: blur(18px);
    box-shadow: var(--timeline-shadow);
}

.timeline-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    text-decoration: none;
}

.timeline-brand-mark {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.16);
    flex: 0 0 auto;
}

.timeline-brand-mark img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.timeline-brand-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.timeline-brand-text strong {
    font-size: 1.15rem;
}

.timeline-brand-text small {
    color: var(--timeline-text-muted);
}

.timeline-nav {
    display: inline-flex;
    justify-content: center;
    gap: 8px;
    padding: 6px;
    justify-self: center;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.timeline-nav a {
    padding: 10px 14px;
    border-radius: 999px;
    text-decoration: none;
    color: var(--timeline-text-muted);
    transition: background 0.2s ease, color 0.2s ease;
}

.timeline-nav a:hover,
.timeline-nav a:focus-visible,
.timeline-nav a[aria-current="page"] {
    background: rgba(79, 140, 255, 0.18);
    color: var(--timeline-text);
}

.timeline-header-actions {
    justify-self: end;
}

.timeline-link-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1px solid rgba(125, 211, 252, 0.18);
    background: rgba(255, 255, 255, 0.06);
    color: var(--timeline-text);
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease;
}

.timeline-link-button:hover,
.timeline-link-button:focus-visible {
    background: rgba(79, 140, 255, 0.18);
    border-color: rgba(125, 211, 252, 0.42);
}

.timeline-link-button:active {
    transform: scale(0.98);
}

.timeline-link-button-primary {
    background: linear-gradient(135deg, rgba(79, 140, 255, 0.9), rgba(111, 66, 193, 0.88));
    border-color: rgba(147, 197, 253, 0.44);
}

.timeline-link-button-secondary {
    background: rgba(255, 255, 255, 0.05);
}

.timeline-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 28px 0 48px;
}

.timeline-hero,
.timeline-stage,
.timeline-detail {
    border: 1px solid var(--timeline-border);
    border-radius: 28px;
    background: var(--timeline-panel);
    box-shadow: var(--timeline-shadow);
}

.timeline-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.9fr);
    gap: 24px;
    padding: 34px;
}

.timeline-kicker,
.timeline-stage-kicker {
    margin: 0 0 14px;
    color: #bfd3ff;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.82rem;
}

.timeline-hero h1,
.timeline-stage h2,
.timeline-detail h2 {
    margin: 0;
    line-height: 0.95;
    letter-spacing: -0.03em;
}

.timeline-hero h1 {
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(3rem, 8vw, 5.6rem);
    max-width: 10ch;
}

.timeline-lead {
    max-width: 66ch;
    color: var(--timeline-text-muted);
    font-size: 1.08rem;
    line-height: 1.7;
    margin: 18px 0 0;
}

.timeline-hero-meta {
    display: grid;
    gap: 14px;
    align-content: start;
}

.timeline-stat {
    padding: 18px 18px 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.timeline-stat span {
    display: block;
    color: var(--timeline-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.74rem;
}

.timeline-stat strong {
    display: block;
    margin-top: 8px;
    font-size: clamp(1.4rem, 3vw, 2.4rem);
}

.timeline-stage,
.timeline-detail {
    padding: 26px;
}

.timeline-filters {
    display: grid;
    grid-template-columns: minmax(220px, 1.3fr) repeat(2, minmax(180px, 0.7fr)) auto;
    gap: 12px;
    align-items: end;
    margin-top: 18px;
}

.timeline-filter-field {
    display: grid;
    gap: 8px;
}

.timeline-filter-field span {
    color: var(--timeline-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.72rem;
}

.timeline-filter-field input,
.timeline-filter-field select {
    width: 100%;
    min-height: 46px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.04);
    color: var(--timeline-text);
    padding: 0 14px;
    outline: none;
}

.timeline-filter-field input::placeholder {
    color: rgba(237, 242, 255, 0.42);
}

.timeline-filter-field input:focus-visible,
.timeline-filter-field select:focus-visible {
    border-color: rgba(125, 211, 252, 0.34);
    box-shadow: 0 0 0 3px rgba(125, 211, 252, 0.12);
}

.timeline-reset-button {
    min-height: 46px;
    padding: 0 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--timeline-text);
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease;
}

.timeline-reset-button:hover,
.timeline-reset-button:focus-visible {
    background: rgba(79, 140, 255, 0.18);
    border-color: rgba(125, 211, 252, 0.28);
}

.timeline-stage-header {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 18px;
}

.timeline-stage-actions {
    display: inline-flex;
    gap: 10px;
}

.timeline-scroll-button {
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--timeline-text);
    cursor: pointer;
    font-size: 1.1rem;
    transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease;
}

.timeline-scroll-button:hover,
.timeline-scroll-button:focus-visible {
    background: rgba(79, 140, 255, 0.18);
    border-color: rgba(125, 211, 252, 0.28);
}

.timeline-scroll-button:disabled {
    opacity: 0.45;
    cursor: default;
    transform: none;
}

.timeline-status {
    margin: 16px 0 0;
    color: var(--timeline-text-muted);
}

.timeline-track-shell {
    position: relative;
    margin-top: 20px;
    overflow: hidden;
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(5, 12, 24, 0.56);
}

.timeline-track-shell::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 2px;
    transform: translateY(-50%);
    background: linear-gradient(90deg, transparent, rgba(125, 211, 252, 0.6), transparent);
    pointer-events: none;
}

.timeline-track {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(280px, 340px);
    gap: 22px;
    overflow-x: auto;
    padding: 28px 22px;
    scrollbar-width: thin;
    scroll-snap-type: x proximity;
}

.timeline-card {
    position: relative;
    display: grid;
    gap: 14px;
    align-content: start;
    min-height: 320px;
    padding: 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(13, 24, 44, 0.94), rgba(8, 15, 28, 0.98));
    color: inherit;
    text-align: left;
    cursor: pointer;
    scroll-snap-align: start;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
}

.timeline-card-media {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
        rgba(255, 255, 255, 0.03);
}

.timeline-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.timeline-card:hover,
.timeline-card:focus-visible {
    transform: translateY(-4px);
    border-color: rgba(125, 211, 252, 0.34);
}

.timeline-card:focus-visible {
    outline: 2px solid rgba(125, 211, 252, 0.7);
    outline-offset: 2px;
}

.timeline-card.is-active {
    border-color: var(--timeline-card-accent, rgba(125, 211, 252, 0.65));
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.28);
}

.timeline-card-year {
    display: inline-flex;
    width: fit-content;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: #ffffff;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.timeline-card::after {
    content: "";
    position: absolute;
    left: 28px;
    bottom: -37px;
    width: 16px;
    height: 16px;
    border-radius: 999px;
    background: var(--timeline-card-accent, var(--timeline-accent));
    box-shadow: 0 0 0 8px rgba(7, 17, 31, 0.92);
}

.timeline-card-period {
    color: var(--timeline-card-accent, var(--timeline-accent));
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.timeline-card-title {
    margin: 0;
    font-size: 1.25rem;
    line-height: 1.2;
}

.timeline-card-summary {
    margin: 0;
    color: var(--timeline-text-muted);
    line-height: 1.6;
}

.timeline-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
}

.timeline-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 30px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--timeline-text);
    font-size: 0.82rem;
}

.timeline-detail {
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: var(--timeline-panel-strong);
}

.timeline-detail-topline {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.timeline-detail-year,
.timeline-detail-period {
    display: inline-flex;
    width: fit-content;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
}

.timeline-detail-period {
    color: var(--timeline-accent);
}

.timeline-detail-summary {
    margin: 0;
    color: var(--timeline-text-muted);
    font-size: 1.02rem;
    line-height: 1.7;
}

.timeline-detail-content {
    color: var(--timeline-text);
    line-height: 1.8;
}

.timeline-detail-media {
    overflow: hidden;
    margin-bottom: 16px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
        rgba(255, 255, 255, 0.03);
}

.timeline-detail-media img {
    width: 100%;
    max-height: 320px;
    display: block;
    object-fit: cover;
}

.timeline-detail-content p {
    margin: 0;
}

.timeline-detail-tags,
.timeline-detail-locations,
.timeline-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.timeline-location-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 0 14px;
    border: 1px solid rgba(125, 211, 252, 0.24);
    border-radius: 999px;
    background: rgba(125, 211, 252, 0.08);
    color: var(--timeline-text);
    cursor: pointer;
    font-weight: 600;
}

.timeline-location-button:hover,
.timeline-location-button:focus-visible {
    background: rgba(125, 211, 252, 0.16);
}

.timeline-empty {
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
    color: var(--timeline-text-muted);
    text-align: center;
}

@media (max-width: 1100px) {
    .timeline-header {
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .timeline-nav {
        justify-self: start;
    }

    .timeline-header-actions {
        justify-self: start;
    }

    .timeline-hero {
        grid-template-columns: 1fr;
    }

    .timeline-filters {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 760px) {
    .timeline-shell {
        padding: 14px;
    }

    .timeline-header,
    .timeline-stage,
    .timeline-detail {
        border-radius: 20px;
    }

    .timeline-main {
        gap: 18px;
        padding-top: 20px;
    }

    .timeline-hero {
        padding: 24px 20px;
    }

    .timeline-hero h1 {
        max-width: none;
    }

    .timeline-stage,
    .timeline-detail {
        padding: 20px;
    }

    .timeline-stage-header {
        flex-direction: column;
        align-items: stretch;
    }

    .timeline-stage-actions {
        justify-content: flex-end;
    }

    .timeline-filters {
        grid-template-columns: 1fr;
    }

    .timeline-detail-actions {
        flex-direction: column;
    }

    .timeline-detail-actions .timeline-link-button {
        width: 100%;
    }

    .timeline-track {
        grid-auto-columns: minmax(246px, 82vw);
        gap: 16px;
        padding: 24px 16px 28px;
    }
}