:root {
    --bg-dark: #2a1f14;
    --wood-dark: #3d2a18;
    --wood-mid: #5a3d22;
    --wood-light: #7a5632;
    --wood-highlight: #a07848;

    --parchment: #f0e0c4;
    --parchment-dark: #d4b888;
    --parchment-border: #8b6030;

    --text-dark: #2d1f0f;
    --text-light: #f0dfc0;
    --text-gold: #f5c842;

    --panel-bg: #4a3020;
    --border-dark: #1a1208;
    --border-light: #7a5632;

    --shadow: rgba(0, 0, 0, 0.7);
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    background-image: url("resource/bg_wall.png");
    background-size: 400px 400px;
    background-repeat: repeat;
    image-rendering: pixelated;
    font-family: 'DotGothic16', 'Silkscreen', 'MS Gothic', monospace;
    color: var(--text-light);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

.pixel-text {
    font-family: 'Silkscreen', 'DotGothic16', monospace;
    image-rendering: pixelated;
}

.plant-decor {
    display: block;
    position: absolute;
    top: 0;
    height: 100%;
    width: 100%;
    vertical-align: bottom;
    pointer-events: none;
    z-index: 200;
    overflow: hidden;
}

.plant-decor img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: top;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.plant-left {
    left: 0;
    /* width: 22vw; */
    max-width: 240px;
}

.plant-right {
    right: 0;
    /* width: 5vw; */
    max-width: 80px;
}

@media (max-width: 1050px) {
    .plant-decor {
        display: none;
    }
}

.board-scene {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 0 40px;
    z-index: 10;
    background-color: var(--bg-dark);
    background-image: url("resource/bg_wall.png");
    background-size: 400px 400px;
    background-repeat: repeat;
    image-rendering: pixelated;
    box-shadow: 0 0 0 4px var(--border-dark), 0 0 60px rgba(0, 0, 0, 0.8);
}

.title-board {
    position: relative;
    width: 100%;
    cursor: pointer;
    animation: titleSwing 4s ease-in-out infinite;
    transform-origin: center top;
    user-select: none;
    line-height: 0;
}

.title-board:active {
    animation-play-state: paused;
    transform: rotate(-1deg);
}

.title-board-img {
    width: 50%;
    height: auto;
    display: block;
    margin: 0 auto;
    filter: drop-shadow(0px 6px 0 rgba(0, 0, 0, 0.5));
}

@keyframes titleSwing {

    0%,
    100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(0.4deg);
    }

    75% {
        transform: rotate(-0.4deg);
    }
}

.lang-switch {
    position: absolute;
    top: 8px;
    right: 12px;
    display: flex;
    gap: 6px;
}

.lang-link,
.lang-current {
    display: inline-block;
    padding: 4px 8px;
    font-family: 'Silkscreen', monospace;
    font-size: 0.65rem;
    border: 2px solid var(--wood-dark);
    text-decoration: none;
    image-rendering: pixelated;
}

.lang-link {
    background: var(--parchment-dark);
    color: var(--text-dark);
    box-shadow: 2px 2px 0 var(--border-dark);
    transition: transform 0.1s, box-shadow 0.1s;
}

.lang-link:hover {
    transform: translateY(-2px);
    box-shadow: 2px 4px 0 var(--border-dark);
}

.lang-link:active {
    transform: translateY(2px);
    box-shadow: 0 0 0 var(--border-dark);
}

.lang-current {
    background: var(--wood-mid);
    color: var(--text-gold);
}

.hanging-panels {
    display: flex;
    gap: 12px;
    align-items: stretch;
    justify-content: center;
    padding: 0 12px;
}

.panel {
    flex: 1;
    min-width: 0;
    position: relative;
}

.sway-center {
    animation: swayCenter 6s ease-in-out infinite;
    transform-origin: center top;
}

@keyframes swayCenter {

    0%,
    100% {
        transform: rotate(0deg);
    }

    40% {
        transform: rotate(0.8deg);
    }

    80% {
        transform: rotate(-0.8deg);
    }
}

.wood-panel {
    background: none;
    border: 35px solid transparent;
    border-image-source: url("resource/panel/nav_panel_sprite.png");
    border-image-slice: 35 fill;
    border-image-width: 35px;
    border-image-repeat: stretch;
    padding: 8px 0 16px;
    image-rendering: pixelated;
    position: relative;
    z-index: 1;
    filter: drop-shadow(5px 2px 0 rgba(0, 0, 0, 0.2));
}

.panel-nav::before,
.panel-nav::after,
.panel-social::before,
.panel-social::after {
    content: "";
    position: absolute;
    top: -200px;
    width: 9px;
    height: 200px;
    background: url("resource/rope.png") repeat-y center top;
    background-size: 9px 9px;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    z-index: 0;
}

.panel-nav::before,
.panel-social::before {
    left: 55px;
}

.panel-nav::after,
.panel-social::after {
    right: 55px;
}

.panel-inner {
    width: 100%;
    height: 100%;
}

.panel-title {
    font-size: 1.00rem;
    font-family: 'Silkscreen', monospace;
    color: #2c0a0a;
    text-align: center;
    padding: 10px 0 0;
    margin-top: 6px;
    margin-bottom: 0;
    border-bottom: none;
    text-shadow:
        1px 1px 0 #ffffff,
        -1px 1px 0 #ffffff,
        1px -1px 0 #ffffff,
        -1px -1px 0 #ffffff;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.wood-btn-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    list-style: none;
    padding: 0;
}

.panel-nav .wood-btn {
    min-height: 63px;
    font-size: 1.6rem;
    position: relative;
}

.panel-nav .wood-btn span {
    transform: scaleX(0.4);
    transform-origin: left center;
    overflow: visible;
    white-space: nowrap;
    padding-left: 8px;
    width: 100%;
}

.panel-nav .wood-btn img {
    position: absolute;
    right: 2px;
    top: 50%;
    transform: translateY(-50%);
    width: 54px;
    height: 54px;
    flex-shrink: 0;
}

.panel-social .wood-btn {
    font-size: 0.85rem;
    position: relative;
}

.panel-social .wood-btn span {
    transform: scaleX(0.5);
    transform-origin: left center;
    overflow: visible;
    white-space: nowrap;
    padding-left: 8px;
    width: 100%;
}

.panel-social .wood-btn img {
    position: absolute;
    right: 2px;
    top: 50%;
    transform: translateY(-50%);
}

.wood-btn {
    display: flex;
    align-items: center;
    gap: 0;
    width: 100%;
    min-height: 42px;
    padding: 0;
    text-decoration: none;
    cursor: pointer;
    user-select: none;
    position: relative;

    background: none;
    border: 6px solid transparent;
    border-image-source: url("resource/panel/nav_btn_sprite.png");
    border-image-slice: 6 fill;
    border-image-width: 6px;
    border-image-repeat: repeat;

    font-family: 'Silkscreen', 'DotGothic16', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    color: #3b1f0a;
    letter-spacing: 1px;
    image-rendering: pixelated;
    transition: transform 0.05s step-end;
}

.wood-btn:hover {
    filter: brightness(1.2);
    color: #250f00;
}

.wood-btn:active,
.wood-btn.pressed {
    transform: translateY(2px) scale(0.98);
}

.wood-btn img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    flex-shrink: 0;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    padding: 3px;
    margin-left: auto;
    margin-right: 4px;
    order: 2;
    filter: drop-shadow(1px 1px 0 rgba(0, 0, 0, 0.3));
}

.wood-btn span {
    flex: 1;
    padding: 10px 8px 10px 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.35);
    text-transform: uppercase;
    order: 1;
}

.panel-about {
    flex: 1.4;
}

.about-paper-container {
    position: relative;
    width: 100%;
    background: #e8d9bc;
    background-image:
        url("data:image/svg+xml,%3Csvg viewBox='0 0 4 4' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='0' y='0' width='2' height='2' fill='rgba(0,0,0,0.04)'/%3E%3Crect x='2' y='2' width='2' height='2' fill='rgba(0,0,0,0.04)'/%3E%3C/svg%3E");
    background-size: 4px 4px;
    border: 4px solid var(--parchment-border);
    border-top: 4px solid #c8b080;
    border-left: 4px solid #c8b080;
    box-shadow: 4px 8px 0 rgba(0, 0, 0, 0.6);
    padding: 16px 14px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    clip-path: polygon(0 0, 100% 0, 100% 90%, 92% 100%, 0 100%);
}



.about-content {
    position: static;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.about-title {
    font-family: 'Silkscreen', monospace;
    font-size: 0.75rem;
    color: var(--text-dark);
    letter-spacing: 3px;
    border-bottom: 2px dashed var(--parchment-border);
    padding-bottom: 6px;
    width: 100%;
    text-align: center;
    text-shadow: none;
}

.profile-frame {
    width: 72px;
    height: 72px;
    background: #ccc0a8;
    border: 3px solid #8b6030;
    padding: 3px;
    image-rendering: pixelated;
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}

.profile-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    image-rendering: pixelated;
}

.about-text {
    width: 100%;
    font-family: 'DotGothic16', monospace;
    font-size: 0.7rem;
    color: var(--text-dark);
    line-height: 1.6;
}

.about-text h3 {
    font-family: 'Silkscreen', monospace;
    font-size: 0.7rem;
    color: var(--wood-light);
    margin-bottom: 4px;
    margin-top: 4px;
}

.about-text p {
    margin-bottom: 4px;
}

.shelf-row {
    width: 100%;
    margin-top: 0;
    line-height: 0;
}

.shelf-img {
    width: 100%;
    height: auto;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    display: block;
    filter: drop-shadow(0 4px 0 rgba(0, 0, 0, 0.6));
}

.lower-section {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 16px 10px;
}

.scroll-item {
    position: relative;
    display: block;
    width: 180px;
    flex-shrink: 0;
    text-decoration: none;
    transition: transform 0.1s step-end;
    cursor: pointer;
    background: transparent;
}

.scroll-item img {
    width: 100%;
    height: auto;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    filter: drop-shadow(4px 8px 0 rgba(0, 0, 0, 0.5));
    display: block;
}

.scroll-item:hover {
    transform: translateY(-4px) rotate(-1deg);
}

.scroll-item:active {
    transform: translateY(2px) rotate(1deg);
}

.scroll-item .lower-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.2rem;
    color: var(--text-dark);
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.2);
    pointer-events: none;
}

.lower-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.lower-item {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.1s step-end;
}

.lower-item:hover {
    transform: translateY(-3px);
}

.lower-item:active {
    transform: translateY(2px);
}

.lower-icon {
    width: 64px;
    height: 64px;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    filter: drop-shadow(3px 3px 0 rgba(0, 0, 0, 0.5));
}

/* Lore */
.lore-item {
    background: linear-gradient(90deg, #4a3020 0%, #5a3d20 40%, #4a3020 100%);
    border: 3px solid var(--border-dark);
    border-top: 3px solid var(--wood-light);
    padding: 8px 12px;
    box-shadow: 4px 4px 0 var(--border-dark);
    width: 100%;
}

.lower-text-box {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.lower-badge {
    display: inline-block;
    background: #d4a017;
    color: #1a0f00;
    font-size: 0.6rem;
    padding: 2px 6px;
    border: 2px solid #8b6800;
    box-shadow: 2px 2px 0 #5a4000;
}

.lower-label-book {
    font-size: 1rem;
    color: var(--text-gold);
    text-shadow: 2px 2px 0 var(--border-dark);
}

/* Experiment */
.exp-item {
    background: linear-gradient(180deg, #6b4c28 0%, #4a3020 100%);
    border: 3px solid var(--border-dark);
    border-top: 3px solid var(--wood-highlight);
    padding: 8px 12px;
    box-shadow: 4px 4px 0 var(--border-dark);
    position: relative;
}

.exp-item .lower-label {
    color: var(--text-gold);
    font-size: 0.8rem;
    text-shadow: 2px 2px 0 var(--border-dark);
}

.sparkle {
    position: absolute;
    bottom: 4px;
    right: 8px;
    color: #fffcc0;
    font-size: 1rem;
    animation: sparkleAnim 2s ease-in-out infinite;
}

@keyframes sparkleAnim {

    0%,
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }

    50% {
        opacity: 0.4;
        transform: scale(0.7) rotate(30deg);
    }
}

.footer {
    background: linear-gradient(180deg, var(--wood-dark) 0%, #1a1208 100%);
    border-top: 4px solid var(--border-dark);
    padding: 16px;
    text-align: center;
}

.footer p {
    font-family: 'Silkscreen', monospace;
    font-size: 0.65rem;
    color: var(--parchment-dark);
    margin-bottom: 10px;
    text-shadow: 1px 1px 0 var(--border-dark);
}

.footer img {
    max-width: 80px;
    opacity: 0.8;
    image-rendering: pixelated;
}

.footer img:hover {
    opacity: 1;
}

@keyframes bananeFall {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }

    100% {
        transform: translateY(110vh) rotate(720deg);
        opacity: 0.5;
    }
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--wood-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--wood-mid);
    border: 2px solid var(--wood-dark);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--wood-light);
}

a {
    color: var(--wood-highlight);
}

a:hover {
    color: var(--text-gold);
}

@media (max-width: 700px) {
    .hanging-panels {
        flex-direction: column;
        align-items: center;
    }

    .panel,
    .panel-about {
        width: 95%;
        flex: none;
    }

    .plant-left {
        width: 60px;
    }

    .plant-right {
        width: 30px;
    }

    .lower-section {
        flex-direction: column;
        align-items: center;
    }

    .scroll-item {
        width: 140px;
    }
}