/* 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; }
}

.content-rail__side {
    flex-shrink: 0;
}

@media (min-width: 1024px) {
    .content-rail__side {
        width: 8rem;
    }

    .content-rail__vertical {
        writing-mode: vertical-rl;
        text-orientation: mixed;
    }
}

.modern-vertical-timeline__line {
    width: 4px;
    left: 50%;
    transform: translateX(-50%);
}

.modern-vertical-timeline__events > * + * {
    margin-top: 2rem;
}

.modern-vertical-timeline__dot {
    width: 2rem;
    height: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.modern-vertical-timeline__dot-mobile {
    width: 2rem;
    height: 2rem;
}

.modern-vertical-timeline__summary-icon {
    width: 2rem;
    height: 2rem;
}

@media (min-width: 1024px) {
    .modern-vertical-timeline__col--reverse {
        margin-right: 0;
        margin-left: auto;
        padding-right: 0;
        padding-left: 1.25rem;
    }
}

@media (min-width: 992px) {
    .modern-vertical-timeline__col--reverse {
        margin-inline-start: auto;
        margin-inline-end: 0;
        padding-inline-end: 0;
        padding-inline-start: 1.5rem;
    }
}

/* v25 - chat bubble speech tail (border-triangle trick has no TW/BS utility) */
[data-chat-bubble] {
    position: relative;
}

[data-bubble-side="left"] [data-chat-bubble]::before {
    content: "";
    position: absolute;
    top: 1.25rem;
    left: -0.5rem;
    width: 0;
    height: 0;
    border-top: 0.5rem solid transparent;
    border-bottom: 0.5rem solid transparent;
    border-right: 0.5rem solid currentColor;
    color: inherit;
    opacity: 0.15;
}

[data-bubble-side="right"] [data-chat-bubble]::before {
    content: "";
    position: absolute;
    top: 1.25rem;
    right: -0.5rem;
    width: 0;
    height: 0;
    border-top: 0.5rem solid transparent;
    border-bottom: 0.5rem solid transparent;
    border-left: 0.5rem solid currentColor;
    color: inherit;
    opacity: 0.15;
}

.gallery-zigzag__w-40 { width: 10rem; }
.gallery-zigzag__h-40 { height: 10rem; }
.gallery-zigzag__top-20 { top: 5rem; }

.gallery-zigzag__ratio-3x4 {
    --bs-aspect-ratio: 133.333333%;
}

.gallery-zigzag__hover-scale {
    transition: transform 0.3s ease;
}
.gallery-zigzag__hover-scale:hover {
    transform: scale(1.05);
}

.gallery-zigzag__group-hover-opacity {
    opacity: 0;
    transition: opacity 0.3s ease;
}
.gallery-zigzag__item:hover .gallery-zigzag__group-hover-opacity {
    opacity: 1;
}

.gallery-zigzag__translate-y-full {
    transform: translateY(100%);
    transition: transform 0.5s ease;
}
.gallery-zigzag__item:hover .gallery-zigzag__group-hover-translate-y-0 {
    transform: translateY(0);
}

.gallery-zigzag__group-hover-scale-110 {
    transition: transform 0.5s ease;
}
.gallery-zigzag__item:hover .gallery-zigzag__group-hover-scale-110 {
    transform: scale(1.1);
}

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

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


.invite-boost__section {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

@keyframes invite-boost-flare-throb-cycle {
    0%, 100% { opacity: 1; }
    50%       { opacity: .5; }
}
.invite-boost__flare--throb {
    animation: invite-boost-flare-throb-cycle 2s cubic-bezier(.4,0,.6,1) infinite;
}

@keyframes invite-boost-flare-rebound-cycle {
    0%, 100% { transform: translateY(0); animation-timing-function: cubic-bezier(.8,0,1,1); }
    50%       { transform: translateY(-25%); animation-timing-function: cubic-bezier(0,0,.2,1); }
}
.invite-boost__flare--rebound {
    animation: invite-boost-flare-rebound-cycle 1s infinite;
}

@keyframes invite-boost-flare-ping-cycle {
    75%, 100% { transform: scale(2); opacity: 0; }
}
.invite-boost__flare--ping {
    animation: invite-boost-flare-ping-cycle 1s cubic-bezier(0,0,.2,1) infinite;
}

@keyframes invite-boost-stroke-throb-cycle {
    0%, 100% { opacity: 1; }
    50%       { opacity: .5; }
}
.invite-boost__stroke--throb {
    animation: invite-boost-stroke-throb-cycle 2s cubic-bezier(.4,0,.6,1) infinite;
}

.invite-boost__layer--lift:hover { transform: scale(1.05); transition: transform .2s ease; }

.invite-boost__flare--lift:hover { transform: scale(1.25); transition: transform .2s ease; }

.invite-boost__action--lift:hover { transform: scale(1.05); transition: transform .2s ease; }