:root {
    --gold: #d8c08a;
    --gold-dim: #8f7b4f;
    --ink: #e9e4d8;
    --ink-dim: #a69f8f;
    --panel: rgba(10, 12, 18, 0.62);
    --serif: "Noto Serif KR", Georgia, serif;
    --sans: "Noto Sans", Arial, sans-serif;
    --footer-height: 30px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    height: 100%;
    background: #000;
    color: var(--ink);
    font-family: var(--sans);
}

html {
    scroll-behavior: smooth;
}

body {
    padding-bottom: var(--footer-height);
}

.backdrop {
    position: fixed;
    inset: 0;
    opacity: 0;
    animation: fade-in 3.2s ease-out 0.2s forwards;
}

.slide {
    position: absolute;
    inset: -4%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transform: scale(1.08);
    transition: opacity 3s ease-in-out;
    filter: saturate(0.85) brightness(0.72);
}

.slide.active {
    opacity: 1;
    animation: drift 24s linear forwards;
}

.embers {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0;
    animation: fade-in 4s ease-out 1.5s forwards;
}

.vignette {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse at 50% 45%, rgba(0, 0, 0, 0) 35%, rgba(0, 0, 0, 0.75) 100%),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0, 0) 30%, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 0.85) 100%);
}

.stage {
    position: relative;
    height: 100vh;
    height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px 64px;
    gap: 18px;
    text-align: center;
}

.reveal {
    opacity: 0;
    transform: translateY(12px);
    animation: rise 1.8s ease-out forwards;
}

.logo.reveal { animation-delay: 1.4s; }
.title.reveal { animation-delay: 2.2s; }
.panel.reveal { animation-delay: 2.8s; }
.actions.reveal { animation-delay: 3.6s; }
.desktop-only.reveal { animation-delay: 3.6s; }
.lore-hint.reveal { animation-delay: 4.4s; }
.repo.reveal { animation-delay: 4.2s; }
.music-toggle.reveal { animation-delay: 4.2s; }

.logo {
    width: min(440px, 70vw);
    height: auto;
    min-height: 0;
    object-fit: contain;
    margin-bottom: -8px;
    filter: drop-shadow(0 0 24px rgba(0, 0, 0, 0.8));
}

.title {
    margin: 0;
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(14px, 2.2vw, 20px);
    letter-spacing: 0.6em;
    text-transform: uppercase;
    color: var(--gold);
    text-shadow: 0 0 12px rgba(0, 0, 0, 0.9);
    padding-left: 0.6em;
}

.panel {
    position: relative;
    padding: 22px clamp(16px, 4vw, 44px) 20px;
    background: var(--panel);
    border: 1px solid rgba(216, 192, 138, 0.35);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.7), inset 0 0 40px rgba(0, 0, 0, 0.6), 0 12px 40px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(3px);
    max-width: 100%;
}

.panel::before,
.panel::after {
    content: "";
    position: absolute;
    left: 50%;
    width: 60%;
    height: 1px;
    transform: translateX(-50%);
    background: linear-gradient(to right, transparent, var(--gold), transparent);
}

.panel::before { top: -1px; }
.panel::after { bottom: -1px; }

.panel-heading {
    font-family: var(--serif);
    font-size: clamp(12px, 1.6vw, 15px);
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--ink-dim);
    margin-bottom: 12px;
}

.timer {
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: clamp(6px, 1.6vw, 18px);
}

.unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: clamp(54px, 11vw, 112px);
}

.value {
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(34px, 7.5vw, 76px);
    line-height: 1.1;
    color: #f4ecd8;
    font-variant-numeric: tabular-nums;
    text-shadow: 0 0 18px rgba(216, 192, 138, 0.35), 0 2px 2px rgba(0, 0, 0, 0.9);
}

.label {
    margin-top: 4px;
    font-size: clamp(10px, 1.2vw, 12px);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--gold-dim);
}

.sep {
    font-family: var(--serif);
    font-size: clamp(28px, 6vw, 60px);
    line-height: 1.25;
    color: var(--gold-dim);
}

.date {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: 14px;
    font-size: 13px;
    color: var(--ink-dim);
}

.date-server {
    color: var(--ink);
    letter-spacing: 0.04em;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-top: 6px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 200px;
    padding: 11px 26px;
    text-align: center;
    text-decoration: none;
    font-family: var(--serif);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink);
    background: linear-gradient(to bottom, rgba(58, 52, 40, 0.92), rgba(22, 20, 16, 0.92));
    border: 1px solid var(--gold-dim);
    box-shadow: inset 0 1px 0 rgba(255, 240, 200, 0.12), 0 4px 14px rgba(0, 0, 0, 0.6);
    cursor: pointer;
    transition: border-color 0.25s, color 0.25s, box-shadow 0.25s;
}

.button:hover,
.button:focus-visible {
    color: #fff6dc;
    border-color: var(--gold);
    box-shadow: inset 0 1px 0 rgba(255, 240, 200, 0.2), 0 0 16px rgba(216, 192, 138, 0.25), 0 4px 14px rgba(0, 0, 0, 0.6);
    outline: none;
}

.footer {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: var(--footer-height);
    padding: 4px 16px;
    background: #08090d;
    border-top: 1px solid rgba(216, 192, 138, 0.18);
    text-align: center;
    font-size: 11px;
    color: rgba(166, 159, 143, 0.7);
}

.repo,
.music-toggle {
    position: absolute;
    z-index: 1;
    top: 16px;
    right: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 12px;
    font-size: 13px;
    color: var(--ink-dim);
    text-decoration: none;
    background: rgba(10, 12, 18, 0.45);
    border: 1px solid rgba(216, 192, 138, 0.2);
    transition: color 0.25s, border-color 0.25s;
}

.repo:hover,
.repo:focus-visible,
.music-toggle:hover,
.music-toggle:focus-visible {
    color: var(--ink);
    border-color: var(--gold-dim);
    outline: none;
}

.music-toggle {
    left: 16px;
    right: auto;
    font-family: inherit;
    cursor: pointer;
}

.music-toggle[aria-pressed="true"] .music-muted {
    display: none;
}

.desktop-only {
    display: none;
    max-width: 420px;
    margin: 6px 0 0;
    padding: 12px 16px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--ink-dim);
    background: var(--panel);
    border: 1px solid rgba(216, 192, 138, 0.25);
}

@media (hover: none) and (pointer: coarse) {
    .actions, .timer > .button { display: none; }
    .desktop-only { display: block; }
}

.lore-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
    width: 160px;
    font-family: var(--serif);
    font-size: 12px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--gold);
    text-decoration: none;
}

.lore-hint span {
    width: 10px;
    height: 10px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: rotate(45deg);
    animation: bob 2.4s ease-in-out infinite;
}

.chronicle {
    position: relative;
    display: grid;
    grid-template-columns: 260px minmax(0, 760px);
    justify-content: center;
    gap: 32px;
    padding: 0 16px;
}

.sidebar {
    position: sticky;
    top: 0;
    align-self: start;
    display: flex;
    flex-direction: column;
    height: calc(100vh - var(--footer-height));
    padding: 28px 0 16px;
}

.sidebar-logo {
    width: 150px;
    height: auto;
    margin: 0 auto 4px;
    filter: drop-shadow(0 0 16px rgba(0, 0, 0, 0.8));
}

.mini-timer {
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 12px 8px 10px;
    background: var(--panel);
    border: 1px solid rgba(216, 192, 138, 0.35);
}

.mini-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 50px;
}

.mini-unit .value {
    font-size: 28px;
}

.mini-unit .label {
    font-size: 9px;
    margin-top: 2px;
}

.mini-date {
    margin: 8px 0 18px;
    font-size: 11px;
    text-align: center;
    color: var(--ink-dim);
}

.current-chapter {
    display: none;
}

.chapters {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    background: var(--panel);
    padding-right: 4px;
    scrollbar-width: thin;
    scrollbar-color: var(--gold-dim) transparent;
}

.chapters a {
    display: flex;
    flex-direction: column;
    padding: 7px 12px;
    border-left: 2px solid rgba(216, 192, 138, 0.15);
    color: var(--ink-dim);
    text-decoration: none;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.chapters a:hover {
    color: var(--ink);
}

.chapters a.active {
    color: #f4ecd8;
    border-left-color: var(--gold);
    background: linear-gradient(to right, rgba(216, 192, 138, 0.12), transparent);
}

.chapter-label {
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold-dim);
}

.chapter-label:empty {
    display: none;
}

.chapter-name {
    font-family: var(--serif);
    font-size: 14px;
}

.sidebar-repo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 14px;
    padding: 9px 12px;
    font-size: 13px;
    color: var(--ink-dim);
    text-decoration: none;
    background: var(--panel);
    border: 1px solid rgba(216, 192, 138, 0.25);
    transition: color 0.25s, border-color 0.25s;
}

.sidebar-repo:hover,
.sidebar-repo:focus-visible {
    color: var(--ink);
    border-color: var(--gold-dim);
    outline: none;
}

.lore {
    position: relative;
    padding: 56px clamp(16px, 5vw, 48px) 40px;
    background: rgba(8, 9, 13, 0.88);
    border-left: 1px solid rgba(216, 192, 138, 0.18);
    border-right: 1px solid rgba(216, 192, 138, 0.18);
}

.lore-heading {
    margin: 0 0 8px;
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(22px, 3.4vw, 30px);
    text-align: center;
    color: var(--gold);
}

.lore-text h3 {
    clear: both;
    scroll-margin-top: 24px;
    margin: 2.2em 0 0.8em;
    font-family: var(--serif);
    font-weight: 600;
    font-size: clamp(17px, 2.4vw, 21px);
    text-align: center;
    color: var(--gold);
}

.lore-text h3::after {
    content: "";
    display: block;
    width: 120px;
    height: 1px;
    margin: 12px auto 0;
    background: linear-gradient(to right, transparent, var(--gold-dim), transparent);
}

.lore-text p {
    margin: 0 0 1em;
    font-family: var(--serif);
    font-size: 16px;
    line-height: 1.75;
    color: #ddd6c6;
}

.lore-art {
    display: block;
    max-width: 42%;
    height: auto;
    border: 1px solid rgba(216, 192, 138, 0.3);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

.lore-art-left {
    float: left;
    margin: 6px 24px 16px 0;
}

.lore-art-right {
    float: right;
    margin: 6px 0 16px 24px;
}

.lore-text::after {
    content: "";
    display: block;
    clear: both;
}

body.opened .panel-heading {
    color: var(--gold);
}

body.opened .timer .unit,
body.opened .timer .sep,
body.opened .date {
    visibility: hidden;
}

body.opened .timer > .button {
    position: absolute;
    min-width: 240px;
    padding: 14px 32px;
    font-size: 16px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

body.opened .mini-timer,
body.opened .mini-date {
    display: none;
}

@keyframes fade-in {
    to { opacity: 1; }
}

@keyframes rise {
    to { opacity: 1; transform: none; }
}

@keyframes bob {
    0%, 100% { transform: translateY(0) rotate(45deg); }
    50% { transform: translateY(5px) rotate(45deg); }
}

@keyframes drift {
    from { transform: scale(1.08) translate(0, 0); }
    to { transform: scale(1.0) translate(-1%, -1%); }
}

@media (max-width: 900px) {
    :root {
        --footer-height: 44px;
    }

    .chronicle {
        grid-template-columns: minmax(0, 1fr);
        gap: 0;
        padding: 0;
    }

    .sidebar {
        z-index: 2;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        justify-content: center;
        gap: 2px 12px;
        height: auto;
        padding: 8px 52px;
        background: #08090d;
        border-bottom: 1px solid rgba(216, 192, 138, 0.25);
    }

    .sidebar-logo,
    .chapters,
    .mini-date {
        display: none;
    }

    .mini-timer {
        padding: 0;
        background: none;
        border: none;
    }

    .mini-unit {
        min-width: 38px;
    }

    .mini-unit .value {
        font-size: 20px;
    }

    .sidebar-repo {
        position: absolute;
        top: 50%;
        right: 12px;
        margin: 0;
        padding: 6px;
        transform: translateY(-50%);
    }

    .sidebar-repo span {
        display: none;
    }

    .current-chapter {
        display: block;
        max-width: 100%;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-family: var(--serif);
        font-size: 13px;
        color: var(--gold);
    }

    .lore-text h3 {
        scroll-margin-top: 80px;
    }

    .lore-art-left,
    .lore-art-right {
        max-width: 40%;
    }
}

@media (max-height: 560px) {
    .logo { width: min(260px, 50vw); margin-bottom: -4px; }
    .stage { gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
    .slide.active { animation: none; transform: none; }
    .embers { display: none; }
    .lore-hint span { animation: none; }
}