styles.css

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    overflow: hidden;
    width: 1920px;
    height: 1024px;
    position: relative;
}

/* Map Container */
#map {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Year Display */
#year-display {
    position: absolute;
    top: 30px;
    left: 30px;
    background: rgba(255, 255, 255, 0.95);
    padding: 15px 25px;
    border-radius: 8px;
    font-size: 32px;
    font-weight: bold;
    color: #333;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    z-index: 10;
    font-variant-numeric: tabular-nums;
}

/* Timeline Container */
#timeline-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px 60px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

/* Navigation Buttons */
.nav-btn {
    background: #213159;
    color: #e2dcd5;
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.nav-btn:hover:not(:disabled) {
    background: #2a4070;
    transform: scale(1.1);
}

.nav-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    opacity: 0.5;
}

/* Idle animation for nav buttons */
.nav-btn.idle::before,
.nav-btn.idle::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: rgba(33, 49, 89, 0.15);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    pointer-events: none;
}

.nav-btn.idle::before {
    animation: pulse-ring 2.5s ease-out infinite;
}

.nav-btn.idle::after {
    animation: pulse-ring 2.5s ease-out infinite 1.25s;
}

.nav-btn:disabled::before,
.nav-btn:disabled::after {
    display: none;
}

@keyframes pulse-ring {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(2.5);
        opacity: 0;
    }
}

/* Timeline */
#timeline {
    flex: 1;
    position: relative;
    height: 60px;
    display: flex;
    align-items: center;
    padding: 0 10px;
}

#timeline-track {
    position: absolute;
    width: calc(100% - 20px);
    left: 10px;
    height: 4px;
    background: #ddd;
    border-radius: 2px;
}

#timeline-progress {
    position: absolute;
    left: 10px;
    height: 4px;
    background: #e6b730;
    border-radius: 2px;
    width: 0%;
    transition: width 0.5s ease;
}

#timeline-markers {
    position: relative;
    width: calc(100% - 20px);
    margin-left: 10px;
    height: 100%;
}

/* Year Markers */
.year-marker {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: translateX(-50%);
}

.year-marker .year-label {
    font-size: 14px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.year-marker .year-line {
    width: 2px;
    height: 20px;
    background: #666;
}

/* Event Markers */
.event-marker {
    position: absolute;
    width: 12px;
    height: 12px;
    background: #213159;
    border: 2px solid white;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: all 0.3s ease;
    top: 50%;
}

.event-marker:hover {
    transform: translate(-50%, -50%) scale(1.3);
    box-shadow: 0 0 0 4px rgba(33, 49, 89, 0.2);
}

.event-marker.active {
    background: #e6b730;
    transform: translate(-50%, -50%) scale(1.5);
    box-shadow: 0 0 0 6px rgba(230, 183, 48, 0.3);
}

/* Map Event Markers */
.map-marker {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.9);
    border: 3px solid white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.map-marker img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-marker:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.map-marker.active {
    transform: scale(1.4);
    border-color: #dc2626;
    box-shadow: 0 0 0 6px rgba(220, 38, 38, 0.3);
}

/* Event Info Panel */
#event-panel {
    position: absolute;
    top: 130px;
    left: 30px;
    width: 400px;
    max-height: 600px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    z-index: 20;
    overflow: hidden;
    transition: all 0.3s ease;
}

#event-panel.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-50px);
}

#close-panel {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 21;
}

#close-panel:hover {
    background: rgba(0, 0, 0, 0.7);
}

#event-content {
    overflow-y: auto;
    max-height: 600px;
}

#event-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

#event-content h2 {
    padding: 20px 20px 10px;
    font-size: 22px;
    color: #333;
}

#event-date {
    padding: 0 20px 10px;
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

#event-description {
    padding: 0 20px 20px;
    font-size: 16px;
    line-height: 1.6;
    color: #555;
}

/* Map Event Markers (80x80px with images and labels) */
.map-event-marker {
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.map-event-marker img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #e2dcd5;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    background: #213159;
    transition: all 0.3s ease;
}

.map-event-marker:hover img {
    width: 80px;
    height: 80px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    border: 3px solid #213159 !important;
}

.map-event-marker:not(:has(img))::before {
    content: '';
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #213159;
    border: 3px solid #e2dcd5;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    display: block;
    transition: all 0.3s ease;
}

.map-event-marker:hover:not(:has(img))::before {
    width: 80px;
    height: 80px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    border: 3px solid #213159 !important;
}

.event-label {
    background: rgba(255, 255, 255, 0.95);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    color: #333;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.map-event-marker:hover .event-label {
    background: #213159;
    color: #e2dcd5;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    max-width: none;
    width: max-content;
    transform: translateX(0);
}

/* Past event markers */
.event-marker.past {
    background: #e6b730;
}

/* Info Textbox (Lower right corner) */
#info-box {
    position: absolute;
    bottom: 150px;
    right: 30px;
    width: 400px;
    max-width: 400px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    z-index: 15;
    transition: opacity 0.3s ease, transform 0.3s ease;
    display: flex;
    align-items: flex-end;
}

#info-box.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

#info-text {
    font-size: 15px;
    line-height: 1.6;
    color: #333;
    margin: 0;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

/* Top Controls (Help and Language) */
#top-controls {
    position: absolute;
    top: 30px;
    right: 30px;
    display: flex;
    gap: 15px;
    z-index: 10;
}

.control-btn {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    border-radius: 8px;
    font-size: 20px;
    font-weight: bold;
    color: #333;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.control-btn:hover {
    background: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* Language Selector */
#language-selector {
    position: relative;
}

#language-menu {
    position: absolute;
    top: 60px;
    right: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    min-width: 150px;
    transition: all 0.3s ease;
}

#language-menu.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
}

.language-option {
    padding: 12px 20px;
    cursor: pointer;
    transition: background 0.2s ease;
    font-size: 16px;
    color: #333;
}

.language-option:hover {
    background: #f5f5f5;
}

.language-option.selected {
    background: #e5e5e5;
    font-weight: 600;
}

/* Help Overlay */
#help-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: opacity 0.3s ease;
}

#help-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

#help-content {
    background: white;
    border-radius: 12px;
    padding: 40px;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

#close-help {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.1);
    color: #333;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

#close-help:hover {
    background: rgba(0, 0, 0, 0.2);
    transform: rotate(90deg);
}

#help-content h2 {
    margin: 0 0 20px 0;
    font-size: 28px;
    color: #333;
}

#help-content h3 {
    margin: 20px 0 10px 0;
    font-size: 20px;
    color: #333;
}

#help-content p {
    margin: 0 0 15px 0;
    font-size: 16px;
    line-height: 1.6;
    color: #555;
}

#help-content ul {
    margin: 0 0 15px 20px;
    padding: 0;
}

#help-content li {
    margin-bottom: 12px;
    font-size: 16px;
    line-height: 1.6;
    color: #555;
}

#help-content .credits {
    font-size: 14px;
    line-height: 1.5;
    color: #666;
    background: #f8f8f8;
    padding: 15px;
    border-radius: 6px;
    border-left: 3px solid #8B0000;
}

#help-content .credits a {
    color: #8B0000;
    text-decoration: none;
}

#help-content .credits a:hover {
    text-decoration: underline;
}

.help-footer {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e5e5e5;
    font-style: italic;
    color: #666;
}

/* Explore Button */
.explore-btn {
    width: 100%;
    padding: 18px 32px;
    margin-top: 30px;
    background: #e6b730;
    color: #213159;
    border: none;
    border-radius: 8px;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(230, 183, 48, 0.3);
}

.explore-btn:hover {
    background: #d4a520;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 183, 48, 0.5);
}