button {
    border-radius: 8px;
    border: 1px solid transparent;
    padding: .6em 1.2em;
    font-size: 1em;
    font-weight: 500;
    font-family: inherit;
    background-color: #f9f9f9;
    cursor: pointer;
    transition: border-color .25s
}

button:hover {
    border-color: #646cff
}

button:focus,
button:focus-visible {
    outline: 4px auto -webkit-focus-ring-color
}

#root {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
    color: var(--text-main);
    background: var(--bg-main)
}

.logo {
    height: 6em;
    padding: 1.5em;
    will-change: filter;
    transition: filter .3s
}

.logo:hover {
    filter: drop-shadow(0 0 2em #646cffaa)
}

.logo.react:hover {
    filter: drop-shadow(0 0 2em #61dafbaa)
}

@keyframes logo-spin {
    0% {
        transform: rotate(0)
    }

    to {
        transform: rotate(360deg)
    }
}

@media (prefers-reduced-motion: no-preference) {
    a:nth-of-type(2) .logo {
        animation: logo-spin infinite 20s linear
    }
}

.card {
    padding: 2em
}

.read-the-docs {
    color: #888
}

.tree-node {
    border: 1px solid var(--divider);
    margin: 10px;
    padding: 10px;
    border-radius: 10px;
    background-color: var(--bg-main);
    display: inline-block;
    min-width: 200px;
    position: relative;
    box-shadow: 0 2px 5px #0000001a
}

.tree-node.invalid-node {
    border-color: var(--error);
    background-color: #b222221a
}

.tree-node p {
    margin: 5px 0;
    font-weight: 700
}

.rule-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 10px 0
}

.rule-buttons button {
    margin: 2px;
    padding: 5px 10px;
    font-size: 12px;
    border-radius: 5px;
    border: none;
    background-color: var(--primary);
    color: var(--color-on-dark);
    cursor: pointer;
    transition: background-color .2s
}

.rule-buttons button:hover {
    background-color: var(--primary-hover)
}

.rule-buttons button:active {
    cursor: grabbing
}

.children {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 10px
}

.valid {
    color: var(--success);
    font-weight: 700
}

.invalid {
    color: var(--error);
    font-weight: 700
}

.form {
    margin-bottom: 20px
}

.form input {
    margin: 5px;
    padding: 8px;
    width: 200px;
    border: 2px solid var(--divider);
    border-radius: 5px;
    background: var(--bg-main);
    color: var(--text-main)
}

.form input:hover {
    border-color: var(--text-secondary)
}

.form input.drag-over {
    border-color: var(--accent-blue);
    background-color: var(--bg-secondary)
}

.form button {
    padding: 8px 16px;
    background-color: var(--primary);
    color: var(--color-on-dark);
    border: none;
    border-radius: 5px;
    cursor: pointer
}

.form button:hover {
    background-color: var(--primary-hover)
}

.palette {
    margin-bottom: 20px;
    padding: 10px;
    border: 1px solid var(--divider);
    border-radius: 5px;
    background: var(--bg-secondary)
}

.palette h3 {
    margin: 0 0 10px;
    color: var(--primary)
}

.stmt-blocks {
    display: flex;
    flex-wrap: wrap;
    gap: 10px
}

.stmt-block {
    padding: 10px;
    border-radius: 15px;
    background-color: var(--accent-gold);
    color: var(--text-main);
    cursor: grab;
    font-weight: 700;
    text-align: center;
    min-width: 80px
}

.stmt-block:hover {
    background-color: var(--warning)
}

.stmt-block:active {
    cursor: grabbing
}

.stmt-builder-container {
    margin: 10px 0
}

.stmt-builder-container label {
    display: block;
    margin-bottom: 5px;
    font-weight: 700;
    color: var(--text-main)
}

.stmt-drop-zone {
    border: 2px dashed var(--divider);
    padding: 20px;
    text-align: center;
    border-radius: 5px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center
}

.stmt-drop-zone:hover {
    border-color: var(--text-secondary)
}

.stmt-block.built {
    background-color: var(--accent-gold);
    color: var(--text-main);
    padding: 10px;
    border-radius: 15px;
    display: inline-block;
    margin: 5px;
    position: relative
}

.stmt-block.built button {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--error);
    color: var(--color-on-dark);
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: pointer;
    font-size: 12px
}

.sequence,
.conditional,
.while {
    display: flex;
    flex-direction: column;
    align-items: center
}

.sequence>div,
.conditional>div,
.while>div {
    margin: 5px 0
}

.sequence {
    display: flex;
    flex-direction: row;
    align-items: center
}

.sequence>div {
    margin: 0 5px
}