body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f9f9f9;
    color: #222;
}

footer {
    margin: 2rem
}
h1 {
    color: #3366cc;
    text-align: center;
    margin-top: 2rem;
}
h4 {
    text-align: center;
}
.asteroid-output, .thing-compare, .closest-thing {
    margin: 2rem auto;
    max-width: 600px;
    padding: 1.5rem;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.asteroid-mode-toggle {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 1.5rem 0 1rem 0;
}
.asteroid-mode-toggle button {
    padding: 0.5rem 1.5rem;
    font-size: 1rem;
    border: 1px solid #3366cc;
    background: #f0f6ff;
    color: #3366cc;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}
.asteroid-mode-toggle button.active {
    background: #3366cc;
    color: #fff;
}
#asteroid-id-form {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}
#asteroid-id-input {
    padding: 0.4rem 0.7rem;
    font-size: 1rem;
    border-radius: 4px;
    border: 1px solid #ccc;
}
#asteroid-id-form button[type="submit"] {
    padding: 0.4rem 1rem;
    font-size: 1rem;
    border-radius: 4px;
    border: 1px solid #3366cc;
    background: #3366cc;
    color: #fff;
    cursor: pointer;
}
#dimension-select {
    margin-left: 0.5rem;
    padding: 0.3rem 0.5rem;
    border-radius: 4px;
    border: 1px solid #ccc;
}

/* Info icon and tooltip styles */
.info-icon-wrapper {
    position: relative;
    display: inline-block;
    margin-left: 0.3rem;
    margin-right: 0.3rem;
}

.info-icon {
    cursor: pointer;
    font-size: 1rem;
}

.info-tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
    z-index: 100;
    transition: opacity 0.2s, visibility 0.2s;
}

.info-tooltip a {
    color: #9fc5ff;
    text-decoration: underline;
}

.info-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: #333 transparent transparent transparent;
}

.info-icon-wrapper:hover .info-tooltip,
.info-icon:focus ~ .info-tooltip {
    visibility: visible;
    opacity: 1;
}