/* intro v25 — Sagmeister ticket: corner patch, spiral binding, ticket perforation, square thumb */

/* Corner accent patch → triangle */
.intro-tkt__patch {
    width: 10rem;
    height: 10rem;
    clip-path: polygon(0 0, 100% 0, 0 100%);
    opacity: 0.9;
}
.intro-tkt__spiral { height: 1rem; }
.intro-tkt__body { min-width: 0; }
.intro-tkt__close { width: 2rem; height: 2rem; }

/* Torn notebook spiral binding holes (colour from Tailwind text-*, holes via mask) */
.intro-tkt__spiral {
    -webkit-mask: radial-gradient(circle 5px at center, black 98%, transparent 100%) 0 0 / 30px 100%;
    mask: radial-gradient(circle 5px at center, black 98%, transparent 100%) 0 0 / 30px 100%;
    background: currentColor;
    opacity: 0.5;
}

/* Square cropped thumbnail */
.intro-tkt__thumb {
    width: 6rem;
    height: 6rem;
    object-fit: cover;
}

/* Ticket stub perforation (currentColor from the card text) */
.intro-tkt__ticket { transition: box-shadow 240ms ease; }
.intro-tkt__ticket::after {
    content: "";
    position: absolute;
    top: 0.75rem;
    bottom: 0.75rem;
    left: 7.5rem;
    border-left: 2px dashed currentColor;
    opacity: 0.25;
    pointer-events: none;
}
@media (max-width: 575.98px) {
    .intro-tkt__ticket::after { display: none; }
}

.tips-compact__thumb {
    width: 3rem;
    height: 3rem;
}

.tips-compact__thumb--xs {
    width: 1.5rem;
    height: 1.5rem;
}

.tips-compact__min-shrink {
    min-width: 0;
}

/* glossary folders — summary marker hide, folder hover */
.glossary-folders__sum::-webkit-details-marker {
    display: none;
}

.glossary-folders__sum {
    list-style: none;
}

.glossary-folders__folder {
    transition: transform 0.2s ease;
}

.glossary-folders__folder:hover {
    transform: translateY(-2px);
}

/* FAQ v18 — accordion mechanics */
.faq-accordion-panel {
    max-height: 0;
}

.faq-accordion-icon.solver-hints-symbol-reveal {
    transform: rotate(180deg);
}