:root[data-ready] .subjects,
:root[data-ready] .foot,
:root[data-ready] .intro > :not(.plate) {
    opacity: 1;
    transform: none;
    transition:
        opacity var(--t-reveal) var(--e-entrance),
        transform var(--t-reveal) var(--e-entrance);
}

:root:not([data-ready]) body::after {
    content: "";
    position: fixed;
    inset: 0;
    width: var(--space-four);
    height: var(--space-four);
    margin: auto;
    border: var(--rule-accent) solid var(--border-subtle);
    border-top-color: var(--text-primary);
    border-radius: var(--radius-pill);
    opacity: 0;
    animation: var(--ring-anim);
}

@keyframes ring-spin { to { transform: rotate(var(--turn-full)); } }

@keyframes ring-show { to { opacity: 1; } }

@keyframes glyph-turn {
    from { opacity: 0; transform: rotate(var(--turn-quarter-back)); }
    to { opacity: 1; transform: none; }
}

.theme:hover { color: var(--text-primary); }
.theme:hover::before { border-color: var(--accent-text); }
.theme:focus-visible { box-shadow: none; }
.theme:focus-visible::before { box-shadow: var(--ring-focus); }
.theme:active { transform: translateY(var(--press-depth)); }

:root[data-theme="dark"] .mark { content: url("/contour-logo-cream.svg"); }

.subject:has(.slot[data-held]:disabled) { order: -1; }

.subject-top:hover { background-color: var(--bg-surface); }
.subject-top:focus-visible { box-shadow: var(--ring-focus); }
.subject-top:active { transform: translateY(var(--press-depth)); }
.subject[open] .subject-top { border-bottom: var(--border-w) solid var(--border-rule); }

.subject[data-chosen] .tick {
    border-color: var(--accent-strong);
    background-color: var(--accent-strong);
}

.subject[data-chosen] .tick svg { opacity: 1; }

.subject:has(.slot[data-held]:disabled) .held:not(:empty) {
    justify-self: start;
    padding-block: var(--space-one);
    padding-inline: var(--space-three);
    border-radius: var(--radius-chip);
    background-color: var(--accent-strong);
    color: var(--on-accent);
}

.chevron::before {
    content: "Choose";
    font-family: var(--font-ui);
    font-size: var(--fs-caption);
    font-weight: var(--weight-strong);
    line-height: var(--lh-compact);
    letter-spacing: var(--tracking-caps);
    text-transform: uppercase;
}

.subject[data-chosen] .chevron::before { content: "Change"; }

.subject[data-chosen] .chevron {
    margin-block-end: calc(var(--fs-small) * var(--lh-compact) + var(--space-one));
}

.subject:has(.slot[data-held]:disabled) .chevron {
    margin-block-end: calc(var(--fs-small) * var(--lh-compact) + var(--space-one)
        + var(--pair) * var(--space-one));
}

.subject[open] .chevron::before,
.subject[open][data-chosen] .chevron::before { content: "Close"; }

.subject[open] .chevron svg { transform: rotate(var(--turn-half)); }

.subject-top:hover .chevron { color: var(--text-primary); }

.field > select:hover {
    border-color: var(--accent-text);
    background-color: var(--bg-canvas);
}

.field > select:focus-visible {
    border-color: var(--accent-text);
    box-shadow: var(--ring-focus);
}

.field > select option {
    background-color: var(--bg-raised);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: var(--weight-body);
    letter-spacing: var(--tracking-body);
}

.day:has(.slot:not([hidden])) .day-head { color: var(--text-body); }

.day-head span:first-child::after {
    position: absolute;
    width: var(--border-w);
    height: var(--border-w);
    overflow: hidden;
    font-size: 0;
}

.day:nth-child(1) .day-head span:first-child::after { content: "Monday"; }
.day:nth-child(2) .day-head span:first-child::after { content: "Tuesday"; }
.day:nth-child(3) .day-head span:first-child::after { content: "Wednesday"; }
.day:nth-child(4) .day-head span:first-child::after { content: "Thursday"; }
.day:nth-child(5) .day-head span:first-child::after { content: "Friday"; }
.day:nth-child(6) .day-head span:first-child::after { content: "Saturday"; }
.day:nth-child(7) .day-head span:first-child::after { content: "Sunday"; }

.grid:not(:has(.slot:not([hidden])))::after {
    content: "No workshops match these filters.";
    grid-column: 1 / -1;
    padding-block: var(--space-four);
    font-family: var(--font-body);
    font-size: var(--fs-small);
    font-weight: var(--weight-body);
    line-height: var(--lh-body);
    letter-spacing: var(--tracking-body);
    color: var(--text-muted);
}

.day > .slot:last-child { margin-bottom: 0; }

.slot::before {
    content: "";
    position: absolute;
    width: var(--border-w);
    height: var(--border-w);
    overflow: hidden;
    font-size: 0;
    font-family: var(--font-body);
}

.slot[data-held]:not(:disabled)::before { content: "Holding this seat. "; }
.slot[data-held]:disabled::before { content: "Booked. "; }
.slot[data-full]::before { content: "Full. "; }
.slot:disabled:not([data-full]):not([data-held])::before { content: "Not available. "; }

.slot:hover:not(:disabled) { border-color: var(--accent-text); }
.slot:focus-visible { box-shadow: var(--ring-focus); }
.slot:active:not(:disabled) { transform: translateY(var(--press-depth)); }

.slot .pill {
    border-color: var(--border-subtle);
    background-color: transparent;
    color: var(--text-body);
}

.slot[data-scarce] .slot-body { border-bottom-color: transparent; }

.slot[data-scarce] .slot-bar {
    border-top-color: var(--specialist-red);
    color: var(--specialist-red);
}

.slot[data-full] {
    border-color: var(--border-subtle);
    background-color: var(--bg-sunken);
}

.slot[data-full] .pill { color: var(--text-muted); }
.slot[data-full] .slot-bar { color: var(--text-body); }

.slot[data-held]:not(:disabled) {
    background-image: linear-gradient(
        to bottom,
        var(--accent-strong) var(--bar-accent),
        transparent var(--bar-accent));
}

.slot[data-held]:not(:disabled) .slot-bar { color: var(--accent-text); }

.slot[data-held][data-urgent] .slot-body { border-bottom-color: transparent; }

.slot[data-held][data-urgent] .slot-bar {
    border-top-color: var(--specialist-red);
    color: var(--specialist-red);
}

.slot[data-held]:disabled { background-color: var(--bg-sunken); }
.slot[data-held]:disabled .slot-body { border-bottom-color: var(--accent-strong); }

.slot[data-held]:disabled .slot-bar {
    background-color: var(--accent-strong);
    color: var(--on-accent);
}

.slot:disabled { cursor: not-allowed; }

.slot:disabled:not([data-full]):not([data-held]) {
    border-color: var(--border-subtle);
    background-color: var(--bg-surface);
}

.slot:disabled:not([data-full]):not([data-held]) .pill,
.slot:disabled:not([data-full]):not([data-held]) .slot-body > b,
.slot:disabled:not([data-full]):not([data-held]) .where { color: var(--text-muted); }

.shell:has(.slot[data-held][data-urgent]) .state { color: var(--text-primary); }

.send:hover:not(:disabled) {
    border-color: var(--highlighter-soft);
    background-color: var(--highlighter-soft);
}

.send:focus-visible { box-shadow: var(--ring-focus); }
.send:active:not(:disabled) { transform: translateY(var(--press-depth)); }

.send:disabled {
    opacity: var(--dim-disabled);
    cursor: not-allowed;
    pointer-events: none;
}