body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
    text-align: center;
    margin: 0;
    padding: 20px;
}
.container {
    max-width: 800px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
h1, h2 {
    color: #444;
}
button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin: 10px;
}
button:hover {
    background-color: #45a049;
}
button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}
input, textarea {
    padding: 8px;
    margin: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 80%;
}
textarea {
    height: 100px;
}
.consent-container {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 10px 0;
    white-space: nowrap;
}
.consent-container input {
    margin: 0;
    padding: 0;
}
.consent-container label {
    margin: 0;
    padding: 0;
}
.context-cue {
    margin: 10px auto;
    height: 20px;
    border: 1px solid #ccc;
}
.high volatility {
    background-color: #87CEEB;
}
.low-volatility {
    background-color: #90EE90;
}
.light {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: inline-block;
    margin: 39px;
}
.light.on {
    background-color: #FFFF00;
}
.light.off {
    background-color: #666;
}
#hats {
    margin-top: 60px; /* Push hats down to approximate switch position in Task 1 */
    position: relative;
}
.hat {
    width: 100px;
    height: 100px;
    display: inline-block;
    margin: 10px;
}
#feedback, #feedback2, #feedback3, #feedback4, #feedback5 {
    color: #d9534f;
    font-weight: bold;
    margin-top: 10px;
}
canvas {
    margin: 20px auto;
    border: 1px solid #ccc;
}
#orbitA, #orbitB, #orbitC {
    display: inline-block;
    margin: 10px;
    border: 2px solid #444;
}
#orbitA:not(:disabled), #orbitB:not(:disabled), #orbitC:not(:disabled) {
    border: 2px solid #444;
}
#orbitA:disabled, #orbitB:disabled, #orbitC:disabled {
    border: 2px solid #ccc;
    opacity: 0.5;
    cursor: not-allowed;
}
.spring-system {
    position: relative;
    width: 75px;
    height: 559.5px;
    background: linear-gradient(to bottom, #90EE90 calc(15px + var(--spring-amp)), white calc(15px + var(--spring-amp)), white 559.5px);
    border-radius: 3px;
    box-shadow: 0 0 1.25px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 5px;
}
.spring {
    width: 2px;
    background: #555;
    margin-bottom: 2.5px;
    margin-left: auto;
    margin-right: auto;
    animation-name: spring-oscillate;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    will-change: height;
    z-index: 1;
}
.mass {
    width: var(--size);
    height: var(--size);
    margin-left: auto;
    margin-right: auto;
    animation-name: oscillate;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    transform: translateY(0);
    border-radius: 1px;
    position: relative;
    top: calc(15px + var(--spring-amp));
}
.mass-blue {
    background: #00f;
}
.mass-red {
    background: #f00;
}
.mass-purple {
    background: #a0f;
}
@keyframes oscillate {
    from { transform: translateY(calc(-1 * var(--amp))); }
    to   { transform: translateY(calc(1 * var(--amp))); }
}
@keyframes spring-oscillate {
    from { height: 10px; }
    to   { height: calc(10px + var(--spring-amp)); }
}