* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    font-family:
        ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
        "Liberation Mono", monospace;
    font-size: 13px;
    line-height: 1.5;
    color: #111;
    background: #fff;
}

a {
    color: #000;
    text-decoration: underline;
}

a:hover {
    color: #666;
}

code {
    font-family: inherit;
    background: #f5f5f5;
    padding: 2px 6px;
    border: 1px solid #ccc;
}

pre,
input,
textarea {
    font-family: inherit;
    font-size: 12px;
    padding: 8px;
    border: 1px solid #ccc;
    background: #f5f5f5;
    color: #111;
    width: 100%;
    outline: none;
    resize: none;
}

button {
    font-family: inherit;
    font-size: 12px;
    background: #f5f5f5;
    color: #111;
    border: 1px solid #ccc;
    padding: 8px 16px;
    cursor: pointer;
}

button:hover {
    background: #eee;
}

h1,
h2,
h3 {
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

h1 {
    font-size: 14px;
}
h2 {
    font-size: 13px;
}
h3 {
    font-size: 12px;
    margin-top: 1em;
}

nav {
    border-bottom: 1px solid #ccc;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    z-index: 50;
}

nav h1 {
    margin: 0;
}

.mic-btn {
    padding: 6px 12px;
}

.mic-btn.mic-enabled {
    background: #e8f5e8;
    border-color: #8c8;
    color: #2a5a2a;
}

.mic-btn:disabled {
    cursor: wait;
    opacity: 0.7;
}

.layout {
    display: flex;
    min-height: calc(100vh - 57px);
    margin-top: 57px;
}

.sidebar {
    width: 160px;
    border-right: 1px solid #ccc;
    padding: 12px 0;
    flex-shrink: 0;
    position: sticky;
    top: 57px;
    height: calc(100vh - 57px);
    overflow-y: auto;
    align-self: flex-start;
}

.sidebar-section {
    padding: 8px 16px 8px;
    font-size: 12px;
    color: #000;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    border-bottom: 1px solid #ddd;
    margin-bottom: 4px;
}

.sidebar a {
    display: block;
    padding: 4px 16px;
    text-decoration: none;
    color: #666;
}

.sidebar a:hover {
    color: #000;
    background: #f5f5f5;
}

.content {
    flex: 1;
    padding: 0 20px 40px;
}

.nav-scope {
    flex: 1;
    margin: 0 16px;
}

.nav-scope .scope {
    height: 32px;
    border: 1px solid #ccc;
    background: #fff;
}

.scope canvas {
    width: 100%;
    height: 100%;
    display: block;
}


.content section {
    max-width: 700px;
    margin: 0 auto;
}

.content h2 {
    padding: 12px 0;
    margin: 0;
}

.intro {
    border-bottom: 1px solid #ccc;
    padding-bottom: 1em;
    margin-bottom: 1em;
}

ul,
ol {
    padding-left: 20px;
}

li {
    padding: 2px 0;
}

.repl {
    display: flex;
    gap: 8px;
    margin: 1em 0;
}

.repl-editor {
    flex: 1;
    position: relative;
}

.repl-editor textarea {
    display: block;
    background: transparent;
    color: transparent;
    caret-color: #111;
    position: relative;
    z-index: 1;
}

.hl-pre {
    position: absolute;
    inset: 0;
    margin: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.hl-slash {
    color: #999;
}
.hl-command {
    color: #000;
    font-weight: bold;
}
.hl-number {
    color: #c00;
}
.hl-comment {
    color: #999;
    font-style: italic;
}

.repl-controls {
    display: flex;
}

.repl-controls button {
    width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes eval-flash {
    from {
        outline: 1px solid #999;
    }
    to {
        outline: 1px solid transparent;
    }
}

.evaluated {
    animation: eval-flash 0.3s;
}

@media (max-width: 768px) {
    .nav-scope {
        position: fixed;
        bottom: 48px;
        left: 0;
        right: 0;
        margin: 0;
        z-index: 100;
    }

    .nav-scope .scope {
        height: 48px;
        border: none;
    }

    .layout {
        padding-bottom: 96px;
    }

    .sidebar {
        display: none;
    }
}