html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden; /* to prevent scrollbars */
    font-family: sans-serif;
}

#controls {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 10;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 20px;
    border-radius: 10px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    transition: all 0.3s ease;
}

#controls.minimized {
    display: none;
}

#controls-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

#minimize-button {
    background-color: #dc3545;
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
    margin-left: 15px;
}

#minimize-button:hover {
    background-color: #c82333;
    transform: scale(1.1);
}

#controls-minimized {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 10;
    background-color: rgba(0, 123, 255, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

#controls-minimized:hover {
    background-color: rgba(0, 123, 255, 1);
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

h1 {
    margin: 0;
    flex-grow: 1;
}

#region-selection, #map-selection {
    margin-bottom: 15px;
}

#region-selection label, #map-selection label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

#region-select, #map-type {
    width: 100%;
    padding: 5px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

#container {
    position: relative;
    width: 100vw;
    height: 100vh;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#map-canvas { z-index: 1; }
#road-canvas { z-index: 2; }
#animation-canvas { z-index: 3; }
#city-canvas { z-index: 4; pointer-events: none; }

#start-button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    margin: 0 0 20px 0;
    width: 100%;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
}

/* Leaderboard Styles */
#leaderboard-section {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #ddd;
}

#leaderboard-section h2 {
    margin: 0 0 5px 0;
    font-size: 18px;
    color: #333;
}

.leaderboard-description {
    margin: 0 0 10px 0;
    font-size: 12px;
    color: #666;
    font-style: italic;
}

#leaderboard-container {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: rgba(248, 249, 250, 0.9);
}

#leaderboard-empty {
    padding: 15px;
    text-align: center;
    color: #666;
    font-size: 14px;
}

#leaderboard-list {
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: leaderboard-counter;
}

#leaderboard-list li {
    padding: 8px 15px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    counter-increment: leaderboard-counter;
    position: relative;
}

#leaderboard-list li:last-child {
    border-bottom: none;
}

#leaderboard-list li:nth-child(-n+3) {
    background-color: rgba(255, 215, 0, 0.1); /* Golden tint for top 3 */
}

#leaderboard-list li:before {
    content: counter(leaderboard-counter);
    background-color: #007bff;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    margin-right: 10px;
    flex-shrink: 0;
}

#leaderboard-list li:nth-child(1):before {
    background-color: #ffd700; /* Gold */
    color: #333;
}

#leaderboard-list li:nth-child(2):before {
    background-color: #c0c0c0; /* Silver */
    color: #333;
}

#leaderboard-list li:nth-child(3):before {
    background-color: #cd7f32; /* Bronze */
    color: white;
}

.leaderboard-city-name {
    flex-grow: 1;
    font-weight: 500;
    font-size: 14px;
    color: #333;
}

.leaderboard-count {
    background-color: #e9ecef;
    color: #495057;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
    min-width: 30px;
    text-align: center;
}

.leaderboard-count.high-traffic {
    background-color: #dc3545;
    color: white;
}

.leaderboard-count.medium-traffic {
    background-color: #ffc107;
    color: #333;
}

.leaderboard-count.low-traffic {
    background-color: #28a745;
    color: white;
}