.sidebar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);

    display: flex;
    flex-direction: column;
    gap: 16px;

    position: absolute;
    top: 120px; /* below header */
    right: 16px;
    bottom: 16px;

    padding: 16px;
    overflow: hidden;
    width: 300px;
    z-index: 10;

    & h2 {
        margin: 0;
        text-align: center;
    }
}

.sidebar-robots-header {
    display: flex;
    align-items: center;
    justify-content: space-evenly;
}

.sidebar-robot-list {
    flex: 1;
    list-style: none;
    margin: 0;
    padding: 0;
    overflow-y: auto;

    & li {
        border-bottom: 1px solid #eee;
        padding: 12px 0;
        line-height: 1.8rem;
    }

    & li p {
        font-weight: bold;
    }

    & li p:not(:first-of-type) {
        margin: 0;
    }
}

.add-robot-form {
    border-bottom: 1px solid #333;
    padding-bottom: 16px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.add-robot-actions {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 8px;
    width: 100%;

    & > button.btn {
        max-width: 100px;
        padding: 8px;
    }
}

.robot-name {
    font-size: 1.1rem;
    margin-top: 0.2rem;
    margin-bottom: 0.8rem;
    text-decoration: underline;
}

.robot-status-idle {
    color: #ed6c02;
}

.robot-status-moving {
    color: #4caf50;
}

.robot-coordinates {
    padding-left: 20px;

    & li {
        border-bottom: none;
        padding: 0;
    }
}

/* History/Previous positions log accordion */
.robot-history {
    max-height: 0;
    overflow: hidden;

    transition: max-height 0.3s ease;

    &.expanded {
        max-height: 200px;
    }

    & ul {
        list-style: inside;
        padding-left: 16px;
        margin: 8px 0 0;
    }

    & li {
        font-size: 0.9rem;
        padding: 4px 0;
        border-bottom: none;
    }
}

.robot-history-empty {
    color: #999;
    font-style: italic;
}

.arrow {
    font-size: 1.2rem;
    transition: transform 0.2s ease;

    &.open {
        transform: rotate(180deg);
    }
}

/* Mobile View */
@media screen and (max-width: 768px) {
    .sidebar {
        left: 16px;
        right: 16px;
        bottom: 16px;
        top: auto;

        border-radius: 16px;
        height: 30vh;
        width: auto;
    }

    .simulation-actions {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 12px;
    }

    .add-robot-actions > button,
    .simulation-actions > button {
        padding: 8px;
        margin: 0;
        font-size: 0.8rem;
    }

    .add-robot-form {
        gap: 8px;
    }
}