#simulation-header{
    min-height: 70px;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-left: 25px;
    padding-right: 25px;
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    background-color: var(--header-background);
}

.simulation-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

#simulation-header .theme-switch {
    position: static;
}

.simulation-wrapper{
    display: flex;
    margin: 80px 0 0 0;
    height: calc(100vh - 80px);
}

#simulation-content{
    flex: 1;
    background-color: var(--content-background);
}

.main-page-link{
    height: 70px;
    width:90px;
}

.main-page-link .logo{
    height: 90%;
    width: auto;
}

.simulation-title{
    text-align: center;
}

.simulation-settings-button{
    height: 45px;
    width: 45px;
    border-radius: 5px;
    border: 1px solid var(--strong-border-color);
    background-color: transparent;
    cursor: pointer;
}

.simulation-settings-button span {
    display: block;
    height: 3px;
    margin: 5px;
    background: var(--text-color);
    border-radius: 3px;
}

.simulation-settings-panel{
    display: none;
    overflow-y: auto;
    max-height: 85vh;
    margin-left: 0;
    width: 450px;
    padding: 15px;
    background-color: var(--panel-background);
}

.field {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.field-description {
    color: var(--muted-text-color);
}

.field label {
    font-size: 17px;
    color: var(--text-color);
    font-family: 'Turret Road', sans-serif;
}

.field input[type="number"], .field select {
    width: 140px;
    padding: 7px 9px;
    border-radius: 8px;
    border: 1px solid var(--active-button-background);
    background: var(--input-background);
    color: var(--input-text-color);
    outline: none;
    box-sizing: border-box;
}

.settings-buttons{
    margin-bottom: 10px;
}

.settings-buttons-title {
    margin-bottom: 8px;
    font-size: 17px;
    color: var(--text-color);
}

.settings-buttons-container {
    display: flex;
    gap: 8px;
}

.settings-buttons-container button {
    padding: 9px 12px;
    border-radius: 9px;
    border: none;
    color: var(--button-text-color);
    font-weight: 600;
    cursor: pointer;
    flex: 1;
    background-color: var(--button-background);
}

.settings-buttons-container button.active {
    color: var(--active-button-text-color);
    background-color: var(--active-button-background);
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 10px 0;
    font-size: 17px;
    cursor: pointer;
    color: var(--text-color);
    box-sizing: border-box;
}

.info-box{
    margin-top: 20px;
    margin-bottom: 10px;
    color: var(--text-color);
    font-size: 16px;
}

.help-overlay {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--overlay-background);
    backdrop-filter: blur(2px);
    z-index: 10000;
}

.help-overlay.open {
    display: flex;
}

.help-modal {
    position: relative;
    width: min(920px, calc(100vw - 48px));
    max-height: min(85vh, 900px);
    overflow-y: auto;

    padding: 28px 30px 24px;
    border-radius: 18px;

    background: var(--modal-background);
    color: var(--secondary-text-color);

    border: 1px solid var(--border-color);
    box-shadow: 0 18px 60px var(--shadow-color);

    font-family: inherit;
}

.help-content {
    color: var(--secondary-text-color);
}

.help-content h2 {
    margin: 0 0 18px;
    color: var(--text-color);
    font-size: 28px;
    font-weight: 700;
}

.help-content h3 {
    margin: 22px 0 12px;
    color: var(--text-color);
    font-size: 20px;
    font-weight: 600;
}

.help-content div,
.help-content li {
    line-height: 1.6;
    font-size: 16px;
}

.help-content > div {
    margin-bottom: 10px;
}

.help-content ul,
.help-content ol {
    margin: 10px 0 16px;
    padding-left: 24px;
}

.help-content li {
    margin: 6px 0;
}

.help-content a {
    color: #72aaff;
    text-decoration: none;
}

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

.math-block {
    margin: 12px 0 16px;
    text-align: center;
}

.help-content mjx-container {
    color: inherit;
}

.help-content code {
    padding: 0 4px;
    border-radius: 4px;
    background-color: var(--input-background);
    color: var(--input-text-color);
    border: 1px solid var(--border-color);
}

.help-close {
    position: absolute;
    top: 10px;
    right: 14px;

    border: none;
    background: transparent;
    color: var(--secondary-text-color);

    font-size: 34px;
    line-height: 1;
    cursor: pointer;

    transition: color 0.2s ease, transform 0.2s ease;
}

.help-close:hover {
    color: var(--text-color);
    transform: scale(1.08);
}

.help-modal::-webkit-scrollbar {
    width: 10px;
}

.help-modal::-webkit-scrollbar-track {
    background: var(--content-background);
    border-radius: 10px;
}

.help-modal::-webkit-scrollbar-thumb {
    background: var(--button-background);
    border-radius: 10px;
}

.help-modal::-webkit-scrollbar-thumb:hover {
    background: var(--button-hover-background);
}

.help-button-wrap {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 12px;
}

.help-button {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    font-weight: bold;
}