:root {
    --light: #24bfa0;
    --dark: #011627;
    --primary: #e4890d;
}
body {
    background: var(--dark);
    color: var(--light);
    font-family: '-apple-system',
    'BlinkMacSystemFont',
    'Segoe UI',
    'Roboto',
    'Helvetica Neue',
    'Arial',
    'Noto Sans',
    'sans-serif',
    'Apple Color Emoji',
    'Segoe UI Emoji',
    'Segoe UI Symbol',
    'Noto Color Emoji';
    margin: 0;
    padding: 0.5rem;
}

main {
    display: grid;
    grid-template-areas: 'list nav';
    grid-template-columns: 1fr 30px;
}

.letters {
    min-height: 100vh;
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    grid-area: nav;
    align-items: center;
    align-self: start;
}

.letters a {
        font-weight: bold;
        font-family: monospace;
        display: inline-flex;
        padding: 0.25rem;
        color: var(--primary);
    }

p {
    margin: 0 0 1rem;
}

details {
    margin-bottom: 1rem;
    padding: 0 0 0 1rem;
    color: var(--primary);
}

details summary {
        padding: 0.5rem;
        margin-left: -1rem;
        font-weight: bold;
        letter-spacing: 0.04em;
    }

details p {
        color: var(--light);
        word-break: break-word;
    }

details p:first-of-type {
            margin-top: 0.5rem;
        }

.iframe-container {
    position: fixed;
    bottom: 0;
    right: 0;
    width: 100vmin;
    height: 100vmin;
    max-width: 600px;
    max-height: calc(100vh - 5rem);
    background: #fff;
    box-shadow: 0 0 0 4px var(--primary);
    display: grid;
    place-items: center;
}

.iframe-container>iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: 0;
    }
.iframe-close {
    position: absolute;
    right: 0;
    bottom: 100%;
    box-shadow: 0 0 0 2px var(--primary);
    width: 4rem;
    height: 4rem;
    border-radius: 5px;
    display: grid;
    place-items: center;
    background: var(--dark);
    color: var(--light);
    border: 2px solid currentColor;
}

.google-link {
    display: inline-flex;
    padding: 0.25rem;
    margin-left: 0.25rem;
    border: 1px dashed var(--light);
    border-radius: 3px;
    text-decoration: none;
}

.btn {
    background: transparent;
    border: 1px solid currentColor;
    color: var(--primary);
    box-shadow: 0 0 0 2px var(--light);
    padding: 0.3em 0.5em;
    font-family: monospace;
}

.mb-4 {
    margin-bottom: 2em;
}