* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Alegreya Sans', sans-serif;
}

canvas {
    display: block;
}

.center-slot {
    position: absolute;
    top: 50%;
    left: 33.3333%;
    width: 33.3333%;
    transform: translateY(-50%);
    padding: 24px;
    box-sizing: border-box;
    font-size: 1.2rem;
    font-family: inherit;
    z-index: 2;
}

#thought-display {
    display: none;
    text-align: center;
    transition: opacity 0.4s ease;
}

.side-panel {
    position: absolute;
    top: 0;
    width: 33.3333%;
    height: 100%;
    padding: 24px;
    box-sizing: border-box;
    font-size: 1rem;
    line-height: 1.4;
    text-align: left;
    display: flex;
    flex-direction: column;
}

#left-panel {
    left: 0;
}

#right-panel {
    left: 66.6666%;
}

.panel-title {
    flex: 0 0 auto;
    font-size: 1.1rem;
    font-weight: 700;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid black;
}

.panel-log {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
}

.message {
    display: block;
    width: fit-content;
    max-width: 80%;
    background: #f0f0f0;
    padding: 10px 14px;
    border-radius: 14px;
    margin-bottom: 12px;
}

.message.from-you {
    margin-left: auto;
    background: #dcdcdc;
}

.message mark {
    background: #fdeeaa;
    color: inherit;
    padding: 0 2px;
    border-radius: 2px;
}

.panel-input {
    margin-top: 12px;
    padding: 10px;
    box-sizing: border-box;
    font-size: 1rem;
    font-family: inherit;
    width: 100%;
    flex: 0 0 auto;
}