:root {
    --bg: #fbfbfb;
    --fg: #202020;
    --accent: #246430;
    --accent-dark: #243527;
    --pink: #eb068d;
    --pink-dark: #c00575;
    --blue: #4eb3d1;
    --blue-light: #d6eff8;
    --alt: #f2f0ef;
    --muted: #5a635b;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: Outfit, sans-serif;
    font-size: clamp(16px, 1.4vw, 18px);
    font-weight: 400;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--fg);
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 64px 1.5rem;
}

.updated,
.empty,
.error,
.meta,
.when {
    color: var(--muted);
}

.updated {
    margin: 0 0 2.25rem;
    font-size: 0.95rem;
}

.book {
    appearance: none;
    border: 2px solid var(--pink);
    border-radius: 5px;
    font-family: Outfit, sans-serif;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
}

.day {
    margin-bottom: 2.5rem;
}

.day h2 {
    position: sticky;
    top: 0;
    z-index: 1;
    margin: 0 0 1rem;
    padding: 0.4rem 0;
    background: var(--bg);
    font-size: clamp(28px, 3.2vw, 40px);
    font-weight: 600;
    line-height: 1.35;
}

.session {
    display: grid;
    grid-template-columns: 7rem 1fr auto;
    gap: 0.85rem 1.1rem;
    align-items: center;
    margin-bottom: 0.75rem;
    padding: 1rem 1.15rem;
    background: var(--alt);
    border-radius: 5px;
}

.when {
    margin: 0;
    font-size: 1rem;
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    line-height: 1.35;
}

.when span {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
}

.name {
    margin: 0 0 0.15rem;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.35;
}

.meta {
    margin: 0;
    font-size: 0.95rem;
}

.spaces {
    margin-top: 0.55rem;
    height: 0.4rem;
    overflow: hidden;
    background: var(--blue-light);
    border-radius: 5px;
}

.spaces > i {
    display: block;
    height: 100%;
    background: var(--blue);
}

.session.full .spaces > i {
    background: var(--blue);
    width: 100%;
}

.book {
    color: var(--bg);
    background: var(--pink);
    padding: 16px 32px;
    white-space: nowrap;
}

.book:hover:not(:disabled),
.book:focus-visible:not(:disabled) {
    background: var(--pink-dark);
    border-color: var(--pink-dark);
}

.book:disabled {
    background: #b4aea9;
    border-color: #b4aea9;
    color: var(--bg);
    cursor: not-allowed;
}

.empty, .error {
    padding: 1.2rem 0;
}

.error {
    color: var(--pink);
}

@media (max-width: 640px) {
    main {
        padding-top: 2.25rem;
        padding-bottom: 3rem;
    }

    .book {
        padding: 12px 20px;
    }

    .session {
        grid-template-columns: 1fr auto;
    }

    .when {
        grid-column: 1 / -1;
    }
}