.scroll-down {
    position: absolute;
    bottom: 50px;
    animation: bounce 2s infinite;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-color);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.scroll-down:hover,
.scroll-down:focus {
    opacity: 1;
}

.scroll-down p {
    margin-bottom: 8px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* content */
.year-title {
    text-align: center;
    font-size: clamp(2rem, 6vw, 3rem);
    margin-bottom: 50px;
    letter-spacing: 4px;
    position: relative;
}

.year-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-red), var(--accent-orange), var(--accent-yellow));
}

.content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.content-text {
    padding: 20px;
    text-align: right;
}

.content-text p {
    margin-bottom: 20px;
    font-size: clamp(1rem, 2vw, 1.1rem);
}

.content-image {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.content-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.6);
}

.content-image img {
    width: 100%;
    display: block;
    height: auto;
}

/* leaders */
.leaders-section {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 80px 0;
}

.leaders-title {
    text-align: center;
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    margin-bottom: 50px;
    letter-spacing: 2px;
}

.leaders-image {
    margin: 40px auto 0;
    text-align: center;
    max-width: 1000px;
    padding: 0 20px;
}

.leaders-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.5);
}

.leaders-caption {
    margin-top: 20px;
    font-style: italic;
    opacity: 0.8;
    text-align: center;
}

/* intro map */
.map-section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.map-title {
    text-align: center;
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    margin-bottom: 30px;
}

.map-container {
    position: relative;
    height: 400px;
    background-image: url('../imgs/map-bg.webp');
    background-size: cover;
    background-position: center;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.map-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1;
    border-radius: 10px;
}

.map-container > * {
    position: relative;
    z-index: 2;
}

.map-placeholder {
    font-style: italic;
    text-align: center;
}

/* svg map */
svg g {
    fill: #fff;
    fill-opacity: 0.9;
}

svg g:nth-child(1) {
    fill: #ffcc00;
    fill-opacity: 0.4;
    stroke: #ffcc00;
    stroke-width: 5;
}

svg .svg-city:hover {
    fill: #ffcc00;
    fill-opacity: 0.6;
    stroke: #ffcc00;
    stroke-width: 5;
}

.svg-map-section {
    padding: 80px 0;
    background-color: rgba(18, 18, 18, 0.8);
    position: relative;
}

.svg-map-title {
    text-align: center;
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    margin-bottom: 40px;
    letter-spacing: 2px;
}

.svg-map-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

.interactive-map {
    position: relative;
    width: 100%;
    height: 500px;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.svg-map-caption {
    text-align: center;
    margin-top: 20px;
    font-style: italic;
    opacity: 0.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-style: italic;
    margin-top: 20px;
    color: #666;
}

.map-legend {
    background-color: rgba(0, 0, 0, 0.6);
    border-radius: 8px;
    padding: 15px;
    position: absolute;
    bottom: 20px;
    right: 40px;
    z-index: 10;
    max-width: 200px;
}

.legend-item {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
}

.legend-color {
    display: inline-block;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    margin-right: 10px;
}

.legend-text {
    font-size: 0.9rem;
}

/* SVG styles */
.region {
    fill: #121212;
    stroke: rgba(255, 255, 255, 0.2);
    stroke-width: 1;
    transition: all 0.3s ease;
}

.core-region {
    fill: var(--accent-orange);
    opacity: 0.6;
}

.contested-region {
    fill: var(--accent-yellow);
    opacity: 0.4;
}

.influence-region {
    fill: var(--accent-red);
    opacity: 0.3;
}

.region:hover {
    opacity: 0.8;
    cursor: pointer;
}

.region-tooltip {
    position: absolute;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px;
    border-radius: 5px;
    font-size: 0.9rem;
    pointer-events: none;
    z-index: 100;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
    max-width: 250px;
    transition: opacity 0.3s ease;
}

@media screen and (max-width: 768px) {
    .interactive-map {
        height: 350px;
    }
    
    .map-legend {
        position: relative;
        margin: 20px auto 0;
        right: auto;
        bottom: auto;
        max-width: 280px;
    }
}

/* responsive */
@media screen and (max-width: 768px) {
    .content {
        grid-template-columns: 1fr;
    }

    .content-text {
        text-align: left;
        order: 2;
    }

    .content-image {
        order: 1;
    }
}