body {
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
}

.tanks img{
    height: 75px;
    width: 120px;
    margin: 1px;
}

.tanks_checked img{
    /* filter: brightness(30%); */
    background-color: gray;
}

.button {
    width: 110px;
    height: 50px;
    font-size: 20px;
}

.button-sim {
    width: 200px;
    height: 50px;
    font-size: 20px;
}

.simulation-controls {
    margin: 20px 0;
    text-align: left;
    padding: 0 20px;
}

.simulation-controls label {
    margin-right: 10px;
    font-weight: bold;
}

.simulation-controls input {
    margin-right: 20px;
    width: 80px;
    height: 30px;
    font-size: 16px;
}

.simulation-results {
    margin: 20px;
    text-align: left;
    padding: 0 20px;
}

.histogram {
    margin: 30px auto;
    padding: 10px;
    width: 95%;
    max-width: 950px;
}

.chart-container {
    position: relative;
    margin: 70px 0 70px 60px;
    height: 400px;
}

.axis-label {
    font-weight: bold;
    position: absolute;
}

.x-axis-label {
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
}

.y-axis-label {
    transform: rotate(-90deg);
    left: -60px;
    top: 50%;
    transform-origin: top left;
    white-space: nowrap;
}

.y-axis {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #333;
}

.y-tick {
    position: absolute;
    left: -40px;
    transform: translateY(50%);
    font-size: 12px;
    text-align: right;
    width: 35px;
}

.histogram-bars-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: visible;
}

.histogram-bars {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 100%;
    border-bottom: 2px solid #333;
}

.histogram-bar-container {
    position: absolute;
    height: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.histogram-bar {
    position: absolute;
    bottom: 0;
    width: 80%;
    left: 10%;
    background-color: #4CAF50;
    border-radius: 2px 2px 0 0;
    z-index: 1;
    transition: background-color 0.2s;
}

.histogram-bar:hover {
    background-color: #3e8e41;
    box-shadow: 0 0 5px rgba(0,0,0,0.3);
}

.histogram-count {
    font-size: 12px;
    margin-bottom: 5px;
    font-weight: bold;
    z-index: 2;
    position: absolute;
    top: -20px;
}

.histogram-label {
    position: absolute;
    bottom: -20px;
    transform: rotate(-45deg);
    font-size: 9px;
    white-space: nowrap;
    transform-origin: left top;
    width: 60px;
    text-align: left;
    z-index: 10;
    opacity: 0.7;
}

.stats-summary {
    margin-bottom: 30px;
}

.stats-table {
    border-collapse: collapse;
    width: 80%;
    max-width: 800px;
    margin: 15px 0;
    font-size: 14px;
}

.stats-table th, .stats-table td {
    border: 1px solid #ddd;
    padding: 8px 12px;
    text-align: left;
}

.stats-table th {
    background-color: #f2f2f2;
    font-weight: bold;
}

.stats-table td:nth-child(2) {
    font-weight: bold;
    text-align: center;
}

.stats-table td:nth-child(3) {
    font-style: italic;
    color: #555;
}

.stats-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.stats-table tr:hover {
    background-color: #f1f1f1;
}

.histogram-bars::-webkit-scrollbar {
    height: 8px;
}

.histogram-bars::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.histogram-bars::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

.histogram-bars::-webkit-scrollbar-thumb:hover {
    background: #555;
}

.y-grid-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background-color: rgba(0, 0, 0, 0.1);
    z-index: 0;
}

.histogram-count-inside {
    color: white;
    font-size: 12px;
    font-weight: bold;
    position: absolute;
    top: 5px;
    width: 100%;
    text-align: center;
}

.tank-container {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    margin: 5px;
    cursor: pointer;
    position: relative;
    border: 2px solid transparent;
    border-radius: 5px;
    padding: 5px;
    transition: all 0.2s ease;
}

.tank-container img {
    height: 75px;
    width: 120px;
    margin-bottom: 5px;
}

.tank-name {
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    width: 100%;
}

.tank-container.tanks_checked {
    background-color: rgba(0, 0, 0, 0.1);
    border-color: #4CAF50;
}

.x-tick {
    position: absolute;
    bottom: -30px;
    transform: translateX(-50%);
    text-align: center;
    color: #333;
}

.x-tick-major {
    font-size: 12px;
    font-weight: bold;
}

.x-tick-minor {
    font-size: 0;
}

.x-tick::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    height: 8px;
    width: 1px;
    background-color: #333;
}

.x-tick-major::before {
    height: 8px;
}

.x-tick-minor::before {
    height: 4px;
}

/* Vertical guide lines */
.x-tick-major::after {
    content: '';
    position: absolute;
    bottom: 30px;
    left: 50%;
    height: 300px;
    width: 1px;
    background-color: rgba(0, 0, 0, 0.1);
    z-index: 0;
}
.x-tick-minor::after {
    content: '';
    position: absolute;
    bottom: 30px;
    left: 50%;
    height: 300px;
    width: 1px;
    background-color: rgba(0, 0, 0, 0.03);
    z-index: 0;
}

.histogram-note {
    font-style: italic;
    color: #233;
    font-size: 20px;
    text-align: center;
    margin-top: 10px;
}