/* Lexicave public landing — hero, Integracja, feature sections + right rail.
 * Type: Jost 300, Quicksand 300/400. No bold.
 * Brand purple: #923fa2, used as a light wash. */

:root {
    --purple: #923fa2;
    --purple-soft: color-mix(in srgb, #923fa2 11%, #fbf8fd);
    --purple-line: color-mix(in srgb, #923fa2 38%, #d9c6e0);
    --ink: #2b2230;
    --mute: #6d6274;
    --faint: #867a90;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --dpr: 1;
}

@media (min-resolution: 1.5dppx) {
    :root { --dpr: 1.5; }
}

@media (min-resolution: 2dppx) {
    :root { --dpr: 2; }
}

@media (min-resolution: 3dppx) {
    :root { --dpr: 3; }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    background: var(--purple-soft);
    color: var(--ink);
}

body {
    font-family: "Quicksand", system-ui, sans-serif;
    font-weight: 400;
    font-size: 1.05rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: color-mix(in srgb, var(--purple) 28%, #fff);
    color: var(--ink);
}

button,
a.node {
    font: inherit;
    color: inherit;
}

.skip {
    position: absolute;
    left: 1rem;
    top: 1rem;
    z-index: 4;
    padding: 0.4rem 0.75rem;
    background: var(--ink);
    color: #fff;
    text-decoration: none;
    transform: translateY(-160%);
}

.skip:focus {
    transform: none;
}

.landing {
    --layout-t: 0;
    position: relative;
    display: grid;
    /* Copy track is always the rail width — videocalls never reflows.
       The scheme visually overhangs left while --layout-t < 1. */
    grid-template-columns: minmax(16rem, 1fr) minmax(12.75rem, 15.5rem);
    gap: clamp(2rem, 4vw, 3.5rem);
    padding: 0 clamp(1.4rem, 5vw, 4.5rem);
    overflow: visible;
}

.landing-copy {
    min-width: 0;
    position: relative;
    z-index: 0;
    contain: layout;
}

.copy-block,
.feature-block {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3.5rem 0;
}

.copy-block__inner,
.feature-block__inner {
    max-width: 28rem;
}

.feature-block__inner {
    max-width: min(36rem, 100%);
}

h1,
.copy-block h2,
.feature-block h2,
.landing-close h2 {
    margin: 0;
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: clamp(2.15rem, 4.6vw, 3.35rem);
    line-height: 1.12;
    letter-spacing: -0.03em;
    color: var(--ink);
}

.copy-block h2,
.feature-block h2,
.landing-close h2 {
    font-size: clamp(1.9rem, 3.8vw, 2.85rem);
}

.hero-lead {
    margin: 1.4rem 0 0;
    max-width: 26rem;
    font-weight: 400;
    font-size: 1.05rem;
    line-height: 1.65;
    color: var(--mute);
}

.lang-note {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin: 1.75rem 0 0;
    padding: 0.1rem 0;
    max-width: 28rem;
}

.lang-note__line {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.15rem 0.55rem;
    margin: 0;
    font-size: 0.98rem;
    line-height: 1.45;
}

.lang-note__label {
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 0.98rem;
    letter-spacing: 0.08em;
    text-transform: lowercase;
    color: var(--purple);
}

.lang-note__separator {
    color: color-mix(in srgb, var(--purple) 58%, var(--faint));
}

.lang-note__name {
    font-family: "Quicksand", system-ui, sans-serif;
    font-weight: 400;
    font-size: 0.98rem;
    line-height: 1.45;
    color: var(--ink);
}

.lang-note__add {
    margin: 0;
    padding: 0 0 0.06rem;
    border: 0;
    border-bottom: 1px solid color-mix(in srgb, var(--purple) 45%, transparent);
    background: none;
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 0.98rem;
    letter-spacing: 0.03em;
    color: var(--purple);
    cursor: pointer;
}

.lang-note__add:hover,
.lang-note__add:focus-visible {
    color: var(--ink);
    border-bottom-color: var(--ink);
    outline: none;
}

.lang-dialog {
    padding: 0;
    border: 0;
    background: transparent;
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    margin: 0;
}

.lang-dialog[open] {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lang-dialog::backdrop {
    background: color-mix(in srgb, var(--ink) 28%, transparent);
    backdrop-filter: blur(5px);
}

.lang-dialog__card {
    position: relative;
    width: min(22.5rem, 100%);
    padding: 1.45rem 1.55rem 1.4rem;
    border-radius: 1.05rem;
    background: #fff;
    box-shadow:
        0 1px 2px color-mix(in srgb, var(--ink) 6%, transparent),
        0 18px 40px color-mix(in srgb, var(--purple) 16%, transparent);
}

.lang-dialog__title {
    margin: 0;
    padding-right: 1.6rem;
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 1.25rem;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.lang-dialog__body {
    margin: 0.65rem 0 0;
    font-family: "Quicksand", system-ui, sans-serif;
    font-weight: 400;
    font-size: 0.98rem;
    line-height: 1.55;
    color: var(--mute);
}

.lang-dialog__body a {
    color: var(--purple);
    text-decoration: none;
}

.lang-dialog__body a:hover,
.lang-dialog__body a:focus-visible {
    color: var(--ink);
    outline: none;
}

.lang-dialog__x {
    position: absolute;
    top: 0.7rem;
    right: 0.7rem;
    width: 1.6rem;
    height: 1.6rem;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--faint);
    font-size: 1.15rem;
    line-height: 1;
    cursor: pointer;
}

.lang-dialog__x:hover,
.lang-dialog__x:focus-visible {
    color: var(--ink);
    outline: none;
}

.landing-close {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 3.5rem clamp(1.4rem, 5vw, 4.5rem);
}

.landing-close__inner {
    max-width: 34rem;
}

.landing-close .hero-lead {
    max-width: 32rem;
}

.landing-close__mail {
    display: inline-block;
    width: fit-content;
    margin: 1.85rem 0 0;
    padding: 0 0 0.12em;
    border-bottom: 1px solid color-mix(in srgb, var(--purple) 42%, transparent);
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: clamp(1.55rem, 3.2vw, 2.2rem);
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--purple);
    text-decoration: none;
}

.landing-close__mail:hover,
.landing-close__mail:focus-visible {
    color: var(--ink);
    border-bottom-color: var(--ink);
    outline: none;
}

.landing-close__legal {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 1.4rem;
    margin: 0;
    padding: 3.1rem 0 0;
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
}

.landing-close__legal a {
    color: var(--faint);
    text-decoration: none;
}

.landing-close__legal a:hover,
.landing-close__legal a:focus-visible {
    color: var(--ink);
    outline: none;
}

.feature-block__body {
    margin-top: 1.75rem;
    min-height: 0;
    color: var(--mute);
    font-weight: 300;
}

.feature-block--rich {
    justify-content: flex-start;
    padding-top: clamp(3.5rem, 12vh, 6rem);
    padding-bottom: clamp(3.5rem, 8vh, 5rem);
}

.feature-block--rich .feature-block__inner {
    max-width: none;
    width: 100%;
}

.feature-block--rich .hero-lead {
    max-width: 40rem;
}

/* —— Wideorozmowy feature showcase & cards —— */
.feat-showcase {
    display: flex;
    flex-direction: column;
    gap: clamp(1.4rem, 2.5vw, 2.2rem);
    margin-top: 2rem;
    width: 100%;
}

/* Reusable card architecture */
.feat-card {
    position: relative;
    background: #ffffff;
    border: 1px solid color-mix(in srgb, var(--purple) 12%, rgba(255, 255, 255, 0.85));
    border-radius: 1.25rem;
    box-shadow:
        0 2px 4px color-mix(in srgb, var(--ink) 2%, transparent),
        0 12px 28px -6px color-mix(in srgb, var(--purple) 7%, transparent);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: flex-start;
    overflow: hidden;
}

.landing:not(.is-layout-morphing) .feat-card {
    transition:
        transform 0.35s var(--ease),
        box-shadow 0.35s var(--ease),
        border-color 0.35s var(--ease);
}

.feat-card:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--purple) 26%, rgba(255, 255, 255, 0.95));
    box-shadow:
        0 2px 6px color-mix(in srgb, var(--ink) 3%, transparent),
        0 18px 40px -8px color-mix(in srgb, var(--purple) 13%, transparent);
}

/* Card header / text body */
.feat-card__body,
.feat-card__header {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.feat-title {
    margin: 0;
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: clamp(1.15rem, 1.4vw, 1.35rem);
    line-height: 1.25;
    letter-spacing: -0.015em;
    color: var(--ink);
}

.feat-desc {
    margin: 0;
    font-family: "Quicksand", system-ui, sans-serif;
    font-weight: 400;
    font-size: 0.98rem;
    line-height: 1.55;
    color: var(--mute);
}

/* Hero card: full width masterpiece */
.feat-card--hero {
    padding: clamp(1.2rem, 2.4vw, 1.85rem);
    gap: clamp(1.2rem, 2vw, 1.6rem);
    background: linear-gradient(
        168deg,
        #ffffff 0%,
        color-mix(in srgb, var(--purple) 3%, #ffffff) 100%
    );
    border-radius: 1.35rem;
}

.feat-card--hero:hover {
    transform: translateY(-2px);
}

.feat-hero-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(1.2rem, 3.2vw, 3rem);
    padding-top: 0.6rem;
    border-top: 1px solid color-mix(in srgb, var(--purple) 12%, transparent);
}

.feat-hero-col {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.feat-hero-col .feat-desc {
    font-size: 1rem;
    line-height: 1.58;
}

/* Section divider */
.feat-divider {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    margin: 0.2rem 0;
    pointer-events: none;
}

.feat-divider span {
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 0.8rem;
    letter-spacing: 0.16em;
    text-transform: lowercase;
    color: var(--faint);
    flex-shrink: 0;
}

.feat-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: linear-gradient(
        to right,
        color-mix(in srgb, var(--purple) 22%, transparent),
        transparent 85%
    );
}

/* 2-column workspace grid */
.feat-grid--duo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(1.1rem, 2vw, 1.6rem);
}

.feat-card--duo {
    padding: clamp(1.15rem, 1.8vw, 1.55rem);
    gap: 1.15rem;
}

.feat-shot-trio {
    --trio-gap: 0.45rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--trio-gap);
    align-items: stretch;
}

.feat-shot-trio .feat-shot:last-child {
    grid-column: 1 / -1;
    width: calc((100% - var(--trio-gap)) / 2);
    justify-self: center;
}

.feat-shot-trio .feat-shot__frame {
    aspect-ratio: 16 / 10;
    border-radius: 0.65rem;
    max-width: none;
}

.feat-shot-trio .feat-shot__frame--lead {
    box-shadow: none;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.fc-syntax {
    display: flex;
    flex-direction: column;
    gap: 1.15rem;
    padding: 1.15rem 1.2rem 1.2rem;
    border-radius: 0.85rem;
    background: color-mix(in srgb, var(--purple) 6%, #fff);
    border: 1px solid color-mix(in srgb, var(--purple) 12%, transparent);
}

.fc-syntax__row {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
}

.fc-syntax__mark {
    flex: 0 0 2.2rem;
    font-family: "Jost", sans-serif;
    font-weight: 400;
    font-size: 1.4rem;
    letter-spacing: 0.02em;
    color: var(--purple);
    line-height: 1.35;
}

.fc-syntax__pair {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    min-width: 0;
}

.fc-syntax__side {
    display: flex;
    flex-direction: column;
    gap: 0.12rem;
}

.fc-syntax__word {
    font-family: "Quicksand", system-ui, sans-serif;
    font-size: 1.12rem;
    font-weight: 400;
    color: var(--ink);
    line-height: 1.35;
}

.fc-syntax__dash {
    color: var(--faint);
    line-height: 1.35;
}

.fc-syntax__lang {
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: lowercase;
    color: var(--faint);
}

.fc-syntax__hint {
    margin-left: auto;
    padding-top: 0.28rem;
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: lowercase;
    color: var(--faint);
    white-space: nowrap;
}

/* In-call tools grid: 5.4fr Search + 6.6fr Chat Stack */
.feat-grid--tools {
    display: grid;
    grid-template-columns: minmax(0, 5.4fr) minmax(0, 6.6fr);
    gap: clamp(1.1rem, 2vw, 1.6rem);
    align-items: start;
}

.feat-card--search {
    padding: clamp(1.15rem, 1.8vw, 1.55rem);
    gap: 1rem;
}

.feat-tools-stack {
    display: flex;
    flex-direction: column;
    gap: clamp(1.1rem, 2vw, 1.6rem);
}

.feat-card--compact {
    padding: clamp(1.15rem, 1.8vw, 1.45rem);
    gap: 0.9rem;
}

.term {
    position: relative;
    display: inline;
    color: var(--purple);
    cursor: help;
    outline: none;
    background-image: linear-gradient(
        to right,
        color-mix(in srgb, var(--purple) 70%, transparent) 33%,
        transparent 0%
    );
    background-position: 0 100%;
    background-size: 5px 1px;
    background-repeat: repeat-x;
    padding-bottom: 0.12rem;
}

.term__tip {
    position: absolute;
    z-index: 8;
    left: 50%;
    bottom: calc(100% + 0.65rem);
    width: min(16.5rem, 70vw);
    padding: 0.7rem 0.85rem;
    border-radius: 0.55rem;
    background: #fff;
    color: var(--ink);
    font-family: "Quicksand", system-ui, sans-serif;
    font-size: 0.82rem;
    font-weight: 400;
    line-height: 1.45;
    letter-spacing: 0.01em;
    text-align: left;
    white-space: normal;
    box-shadow:
        0 1px 2px color-mix(in srgb, var(--ink) 6%, transparent),
        0 12px 28px color-mix(in srgb, var(--purple) 14%, transparent);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(0.35rem);
    transition:
        opacity 0.28s var(--ease),
        transform 0.28s var(--ease),
        visibility 0.28s;
    pointer-events: none;
}

.term__tip::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 100%;
    width: 0.55rem;
    height: 0.55rem;
    margin-left: -0.28rem;
    background: #fff;
    transform: rotate(45deg) translateY(-0.28rem);
    box-shadow: 1px 1px 0 color-mix(in srgb, var(--ink) 4%, transparent);
}

.term:hover .term__tip,
.term:focus-visible .term__tip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.feat-shot {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    background: none;
    cursor: zoom-in;
    border-radius: 0.65rem;
    transition: transform 0.45s var(--ease);
}

.feat-shot:hover,
.feat-shot:focus-visible {
    transform: translateY(-3px) scale(1.01);
    outline: none;
}

.feat-shot__frame {
    position: relative;
    display: block;
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: 0.85rem;
    overflow: hidden;
    background: #141017;
    box-shadow:
        0 1px 2px color-mix(in srgb, var(--ink) 5%, transparent),
        0 10px 28px color-mix(in srgb, var(--purple) 12%, transparent);
}

.feat-shot__frame--photo {
    background: #141017;
    max-width: min(100%, calc(var(--shot-nat-w, 1920) * 1px / var(--dpr, 1)));
    margin-inline: auto;
}

.feat-shot__img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    border-radius: inherit;
    transition: transform 0.45s var(--ease);
}

.feat-card:hover .feat-shot__img {
    transform: scale(1.018);
}

.feat-shot__frame--lead {
    aspect-ratio: 2944 / 1600;
    border-radius: 1.1rem;
    overflow: hidden;
    background: #121018;
    box-shadow:
        0 16px 44px -8px color-mix(in srgb, var(--purple) 18%, transparent),
        0 2px 8px rgba(0, 0, 0, 0.06);
}

.feat-shot__frame--dock {
    aspect-ratio: 1280 / 697;
}

.feat-shot__frame--dock .feat-shot__img {
    object-position: right center;
}

.feat-shot__frame--share {
    aspect-ratio: 2052 / 1248;
}

.feat-shot__frame--search {
    aspect-ratio: 854 / 1142;
}

.feat-shot__frame--search .feat-shot__img,
.feat-shot__frame--correct .feat-shot__img,
.feat-shot__frame--chat .feat-shot__img {
    object-fit: contain;
    object-position: left top;
    top: 0.55rem;
    left: 0.55rem;
    right: auto;
    bottom: auto;
    width: calc(100% - 1.1rem);
    height: calc(100% - 1.1rem);
}

.feat-card--search:hover .feat-shot__img,
.feat-card--compact:hover .feat-shot__img {
    transform: none;
}

.feat-shot__frame--chat {
    aspect-ratio: 698 / 184;
}

.feat-shot__frame--correct {
    aspect-ratio: 708 / 548;
}

.feat-shot__frame--wide {
    aspect-ratio: 2944 / 1592;
    border-radius: 1.1rem;
}

.feat-shot__frame--notes-live {
    aspect-ratio: 886 / 220;
    background: #f3f0f5;
}

.feat-shot__frame--notes-cards {
    aspect-ratio: 1228 / 804;
    background: #f7f5f8;
}

.feat-shot__frame--lobby {
    aspect-ratio: 2944 / 1598;
    border-radius: 1.1rem;
    background: #2a0d3d;
}

.feat-shot__frame--practice {
    aspect-ratio: 2944 / 1598;
    border-radius: 1.1rem;
    background: #01161e;
}

.feat-shot__frame--verbs {
    aspect-ratio: 2944 / 1600;
    border-radius: 1.1rem;
    background: #0b090e;
}

.feat-shot__frame--verbs .feat-shot__img {
    object-position: left center;
}

.feat-shot__frame--calendar {
    aspect-ratio: 2944 / 1598;
    border-radius: 1.1rem;
    background: #0b090e;
}

.feat-shot__frame--calendar .feat-shot__img {
    object-position: left center;
}

.feat-shot__frame--widgets {
    aspect-ratio: 2944 / 1598;
    border-radius: 1.1rem;
    background: #1a1d38;
}

.feat-shot__frame--journal {
    aspect-ratio: 2944 / 1598;
    border-radius: 1.1rem;
    background: #0b090e;
}

.feat-shot__frame--journal .feat-shot__img {
    object-position: left center;
}

.kb-demo {
    align-items: stretch;
}

.kb-guide,
.kb-try {
    min-height: 0;
}

.kb-try {
    display: flex;
    flex-direction: column;
}

.kb-try .feat-card__body {
    flex: 0 0 auto;
}

.kb-try__field {
    flex: 1 1 auto;
    width: 100%;
    min-height: 14rem;
    margin: 0;
    padding: 0.95rem 1.05rem;
    border: 1px solid color-mix(in srgb, var(--purple) 14%, transparent);
    border-radius: 0.85rem;
    background: #fff;
    color: var(--ink);
    font-family: "Quicksand", system-ui, sans-serif;
    font-weight: 400;
    font-size: 1.12rem;
    line-height: 1.55;
    resize: vertical;
    box-sizing: border-box;
}

.kb-try__field::placeholder {
    color: color-mix(in srgb, var(--faint) 80%, transparent);
}

.kb-try__field:focus {
    outline: none;
    border-color: color-mix(in srgb, var(--purple) 42%, transparent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--purple) 12%, transparent);
}

.kb-spec {
    display: flex;
    flex-direction: column;
    gap: 0.12rem;
    padding: 0.2rem 0;
}

.kb-spec__row {
    display: grid;
    grid-template-columns: 9rem 1.5rem minmax(0, 1fr);
    align-items: baseline;
    min-height: 2.15rem;
    padding: 0.24rem 0.2rem;
    border-bottom: 1px solid color-mix(in srgb, var(--purple) 10%, transparent);
}

.kb-spec__row:last-child {
    border-bottom: 0;
}

.kb-spec__input,
.kb-spec__output {
    display: flex;
    align-items: center;
    gap: 0.18rem;
    min-width: 0;
    width: auto;
    white-space: nowrap;
    font-family: "Quicksand", system-ui, sans-serif;
    font-weight: 400;
    font-size: 1rem;
    color: var(--ink);
}

.kb-spec__arrow {
    color: var(--faint);
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 1rem;
    text-align: center;
}

.kb-spec__output {
    font-size: 1.25rem;
    letter-spacing: 0.05em;
}

.kb-key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.3rem;
    height: 1.3rem;
    padding: 0 0.27rem;
    border-radius: 0.35rem;
    border: 1px solid color-mix(in srgb, var(--purple) 18%, transparent);
    border-bottom-width: 2px;
    background: #fff;
    color: var(--ink);
    font-family: "Jost", sans-serif;
    font-weight: 400;
    font-size: 0.78rem;
    line-height: 1;
}

.kb-spec__input .kb-key + .kb-key {
    margin-left: 0;
}

.kb-inline {
    font-family: "Jost", sans-serif;
}

@media (max-width: 420px) {
    .kb-spec__row {
        grid-template-columns: 8.7rem 1.5rem minmax(0, 1fr);
    }
}

@media (prefers-reduced-motion: no-preference) {
    .feat-card {
        animation: feat-card-in 0.7s var(--ease) both;
    }
    .feat-card--hero { animation-delay: 0.04s; }
    .feat-grid--duo .feat-card:nth-child(1) { animation-delay: 0.14s; }
    .feat-grid--duo .feat-card:nth-child(2) { animation-delay: 0.2s; }
    .feat-card--search { animation-delay: 0.26s; }
    .feat-tools-stack .feat-card:nth-child(1) { animation-delay: 0.32s; }
    .feat-tools-stack .feat-card:nth-child(2) { animation-delay: 0.38s; }
}

@keyframes feat-card-in {
    from {
        opacity: 0;
        transform: translateY(1rem);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

/* Lightbox — full viewport so the close control stays inside the dialog
   box (overflow outside <dialog> is covered by ::backdrop and unclickable). */
.shot-lightbox {
    padding: 0;
    border: 0;
    background: transparent;
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    margin: 0;
    overflow: visible;
}

.shot-lightbox[open] {
    display: flex;
    align-items: center;
    justify-content: center;
}

.shot-lightbox::backdrop {
    background: color-mix(in srgb, var(--ink) 42%, transparent);
    backdrop-filter: blur(6px);
}

.shot-lightbox__shell {
    position: relative;
    flex: 0 0 auto;
    width: max-content;
    max-width: 96vw;
    min-width: 0;
}

.shot-lightbox__stage {
    position: relative;
    display: block;
    width: max-content;
    max-width: 96vw;
    max-height: 92vh;
    pointer-events: none;
}

.shot-lightbox__stage .feat-shot__frame {
    pointer-events: auto;
}

.shot-lightbox__stage .feat-shot__frame.is-lightbox {
    position: relative;
    /* Fit the viewport; never upscale past native pixels. Do not divide by DPR —
       high-DPR screens need the full bitmap, not a CSS-shrunk copy. */
    width: min(
        96vw,
        calc(var(--shot-nat-w) * 1px),
        calc(90vh * var(--shot-nat-w) / var(--shot-nat-h))
    );
    max-width: 96vw;
    max-height: 90vh;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 24px 60px color-mix(in srgb, var(--ink) 28%, transparent);
}

.shot-lightbox__stage .feat-shot__frame.is-lightbox::before {
    content: "";
    display: block;
    padding-top: calc(var(--shot-nat-h) / var(--shot-nat-w) * 100%);
}

.shot-lightbox__stage .feat-shot__frame.is-lightbox.feat-shot__frame--photo {
    min-height: 0;
    background: #161018;
}

.shot-lightbox__stage .feat-shot__frame.is-lightbox.feat-shot__frame--notes-live,
.shot-lightbox__stage .feat-shot__frame.is-lightbox.feat-shot__frame--notes-cards {
    background: #f4f1f6;
}

.shot-lightbox__stage .feat-shot__frame--photo .feat-shot__img {
    position: absolute;
    inset: 0;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.4s var(--ease);
}

.shot-lightbox__stage .feat-shot__frame.is-ready .feat-shot__img {
    opacity: 1;
}

.shot-lightbox__wait {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: grid;
    place-items: center;
    pointer-events: none;
    opacity: 1;
    transition: opacity 0.3s var(--ease);
}

.shot-lightbox__stage .feat-shot__frame.is-ready .shot-lightbox__wait {
    opacity: 0;
    visibility: hidden;
}

.shot-lightbox__wait::before {
    content: "";
    width: 1.85rem;
    height: 1.85rem;
    border-radius: 50%;
    border: 1.5px solid color-mix(in srgb, var(--purple) 18%, transparent);
    border-top-color: color-mix(in srgb, var(--purple) 88%, #fff);
    animation: shot-lightbox-spin 0.7s linear infinite;
}

@keyframes shot-lightbox-spin {
    to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
    .shot-lightbox__wait::before {
        animation: none;
        border-color: color-mix(in srgb, var(--purple) 35%, transparent);
        background: radial-gradient(circle at center, var(--purple) 28%, transparent 29%);
    }

    .shot-lightbox__stage .feat-shot__frame--photo .feat-shot__img {
        transition: none;
    }
}

.shot-lightbox__close,
.feat-shot__frame.is-lightbox .shot-lightbox__close {
    position: absolute;
    top: 0.35rem;
    right: 0.35rem;
    z-index: 2;
    display: grid;
    place-items: center;
    width: 1.5rem;
    height: 1.5rem;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: color-mix(in srgb, #fff 92%, transparent);
    color: var(--ink);
    font-size: 1.05rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 6px 16px color-mix(in srgb, var(--ink) 22%, transparent);
}

.shot-lightbox__close:hover,
.shot-lightbox__close:focus-visible {
    background: #fff;
    outline: none;
}

@media (max-width: 1100px) {
    .feat-grid--tools {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 860px) {
    .feat-grid--duo {
        grid-template-columns: 1fr;
    }

    .feat-hero-details {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }

    .feat-card--hero {
        padding: 1.1rem;
    }

    .feat-shot__frame {
        width: 100%;
        min-height: 0;
    }
}

@media (orientation: portrait) {
    .kb-demo {
        grid-template-columns: 1fr;
    }
}

.landing-scheme {
    position: sticky;
    top: 0;
    z-index: 2;
    height: 100vh;
    height: 100dvh;
    display: flex;
    align-items: center;
    /* Track is always 15.5rem. Extra width overhangs the copy column and
       retracts via --layout-t — scheme children are absolute while this runs. */
    width: calc(100% + (1 - var(--layout-t, 0)) * 33vw);
    min-width: 0;
    margin-left: calc((1 - var(--layout-t, 0)) * -33vw);
    overflow: visible;
}

.scheme {
    --menu-t: 0;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-height: 0;
    padding: 0.5rem 0.25rem 0.75rem;
}

.scheme-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: visible;
    z-index: 0;
    opacity: calc(1 - var(--menu-t) * 1.15);
    transition: opacity 0.35s var(--ease);
}

.scheme.is-rail .scheme-svg {
    opacity: 0;
    pointer-events: none;
}

.scheme-svg path {
    fill: none;
    stroke: var(--purple-line);
    stroke-width: 1.15;
    stroke-linecap: round;
    transition: opacity 0.4s var(--ease);
}

.scheme-svg path[data-kind="tree"],
.scheme-svg path[data-kind="rel"] {
    stroke-width: 1.2;
}

.scheme-svg path[data-kind="rel"] {
    stroke-linejoin: round;
}

.scheme-icons {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

.scheme-stack {
    position: relative;
    width: 100%;
    overflow: visible;
    z-index: 1;
}

/*
 * While morphing, nodes are absolute against .scheme (stack is static so it is
 * not a containing block). Stack height stays content-sized — never jumps to 100vh.
 */
.scheme.is-pinned .scheme-stack {
    position: static;
    height: auto;
}

.scheme.is-pinned .scheme-row {
    display: block;
    position: static;
    min-height: 0;
}

/* Extras overlay the scheme while pinned (same origin as main leaves).
 * !important: hover layout leaves inline left/width on this row. */
.scheme.is-pinned .scheme-row--more {
    position: absolute;
    left: 0 !important;
    top: 0;
    right: 0 !important;
    bottom: 0;
    width: auto !important;
    height: auto;
    margin: 0;
    padding: 0;
    opacity: 1;
    pointer-events: none;
    transform: none !important;
    transition: none;
    display: flex;
    z-index: 1;
}

.scheme.is-pinned .scheme-row--more .node {
    pointer-events: auto;
}

.scheme.is-pinned .node[data-anchor="leaf"]:not(.node--inne),
.scheme.is-pinned .node[data-anchor="extra"],
.scheme.is-pinned .node--hub {
    position: absolute;
    left: 0;
    top: 0;
    margin: 0;
    will-change: transform;
}

.scheme.is-pinned .node[data-anchor="leaf"]:not(.node--inne),
.scheme.is-pinned .node[data-anchor="extra"] {
    align-items: center;
    justify-content: center;
    gap: 0;
}

.scheme.is-pinned .node--hub {
    width: auto;
    opacity: var(--hub-fade, 1);
    pointer-events: none;
    gap: 0.7rem;
}

.scheme.is-pinned .node--inne {
    position: absolute;
    left: 0;
    top: 0;
    opacity: var(--inne-fade, 0);
    visibility: hidden;
    pointer-events: none;
}

.scheme.is-pinned .node[data-anchor="leaf"] .node-icon,
.scheme.is-pinned .node[data-anchor="extra"] .node-icon {
    opacity: calc(1 - var(--menu-t));
    transform: scale(calc(1 - var(--menu-t) * 0.45));
    transform-origin: center center;
    width: calc(1.7rem * (1 - var(--menu-t)));
    height: calc(1.7rem * (1 - var(--menu-t)));
    margin: 0;
    overflow: hidden;
    flex-shrink: 0;
}

/* Leaf/extra dots only — hub stays 13px (was blowing up to 2.15rem on pin).
 * White icon disc → purple rail dot via --menu-t (no CSS transition lag on scroll). */
.scheme.is-pinned .node[data-anchor="leaf"] .node-dot,
.scheme.is-pinned .node[data-anchor="extra"] .node-dot {
    width: calc(2.15rem - var(--menu-t) * 1.73rem);
    height: calc(2.15rem - var(--menu-t) * 1.73rem);
    min-width: 0.42rem;
    min-height: 0.42rem;
    background: color-mix(
        in srgb,
        var(--purple) calc(var(--menu-t) * 90%),
        #fff
    );
    box-shadow:
        0 calc(1px * (1 - var(--menu-t))) calc(3px * (1 - var(--menu-t)))
            color-mix(in srgb, var(--ink) calc((1 - var(--menu-t)) * 10%), transparent),
        0 calc(4px * (1 - var(--menu-t))) calc(14px * (1 - var(--menu-t)))
            color-mix(in srgb, var(--purple) calc((1 - var(--menu-t)) * 12%), transparent);
    flex-shrink: 0;
    transition: none;
}

.scheme.is-pinned .node--hub .node-dot {
    width: 13px;
    height: 13px;
    min-width: 13px;
    min-height: 13px;
    background: var(--purple);
}

/*
 * Pinned labels are absolutely positioned by JS:
 * tree → below, circle → radially outside, rail → right of dot.
 */
.scheme.is-pinned .node[data-anchor="leaf"]:not(.node--inne) .node-label,
.scheme.is-pinned .node[data-anchor="extra"] .node-label {
    position: absolute;
    margin: 0;
    white-space: nowrap;
    text-align: center;
    font-size: calc(0.92rem + var(--menu-t) * 0.03rem);
    transform: none;
}

.scheme.is-pinned .node[data-anchor="leaf"]:not(.node--inne):hover .node-label,
.scheme.is-pinned .node[data-anchor="leaf"]:not(.node--inne):focus-visible .node-label,
.scheme.is-pinned .node[data-anchor="extra"]:hover .node-label,
.scheme.is-pinned .node[data-anchor="extra"]:focus-visible .node-label {
    transform: none;
}

/* —— Progress bar (far right of rail) —— */
.rail-progress {
    position: absolute;
    top: 0;
    right: 0;
    width: 3px;
    height: 0;
    border-radius: 2px;
    background: var(--purple);
    opacity: 0;
    pointer-events: none;
    transform-origin: top center;
    z-index: 2;
}

.scheme.is-pinned .rail-progress {
    opacity: calc(var(--menu-t) * 0.95);
}

/*
 * Rail cosmetics only after morph settles (is-rail at menuEase≈1).
 * Layout (flex-dir, padding, box size) is owned by JS + --menu-t while pinned —
 * do not flip flex-direction or padding here mid-scroll.
 */
.scheme.is-rail .node--hub,
.scheme.is-rail .node--inne {
    visibility: hidden !important;
    pointer-events: none !important;
}

.scheme.is-rail .node[data-anchor="leaf"]:not(.node--inne),
.scheme.is-rail .node[data-anchor="extra"] {
    opacity: 1;
}

.scheme.is-rail .node-dot {
    background: color-mix(in srgb, var(--purple) 45%, transparent);
    color: transparent;
    box-shadow: none;
}

.scheme.is-rail .node.is-rail-active .node-dot {
    background: var(--purple);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--purple) 16%, transparent);
}

.scheme.is-rail .node-icon {
    display: none;
}

.scheme.is-rail .node-label {
    letter-spacing: 0.01em;
    text-align: left;
    color: var(--ink);
}

.scheme.is-rail .node.is-rail-active .node-label {
    color: var(--purple);
}

.scheme.is-rail .node:hover .node-label,
.scheme.is-rail .node:focus-visible .node-label {
    color: var(--purple);
}

.scheme.is-rail .node--rail-only {
    display: none !important;
}

.node--rail-only[hidden] {
    display: none !important;
}

.scheme-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.85rem 1.1rem;
}

.scheme-row--more {
    position: absolute;
    left: 0;
    right: auto;
    top: 100%;
    width: max-content;
    justify-content: flex-end;
    gap: 0.85rem 1.1rem;
    /* Padding fills the gap so hover can travel inne → extras without collapsing. */
    padding-top: 4.35rem;
    pointer-events: none;
    /* Behind .node--inne so extras tuck under the icon on close, not over it. */
    z-index: 0;
}

/* .scheme-row { display:flex } would otherwise override [hidden] and flash extras at left:0. */
.scheme-row--more[hidden] {
    display: none !important;
}

.scheme-row--more.is-open {
    pointer-events: auto;
}

.node {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.45rem;
    margin: 0;
    padding: 0.2rem;
    border: 0;
    background: none;
    text-decoration: none;
    cursor: pointer;
    color: var(--ink);
    z-index: 1;
    transition:
        color 0.35s var(--ease),
        opacity 0.4s var(--ease),
        filter 0.4s var(--ease);
}

.node-dot {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.15rem;
    height: 2.15rem;
    border-radius: 999px;
    color: var(--purple);
    transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), background 0.4s var(--ease);
}

/* Icon discs in diagrams 1–2 — same element that shrinks into rail dots. */
.node:not(.node--hub) .node-dot {
    background: #fff;
    box-shadow:
        0 1px 3px color-mix(in srgb, var(--ink) 10%, transparent),
        0 4px 14px color-mix(in srgb, var(--purple) 12%, transparent);
}

.node--hub .node-dot {
    width: 13px;
    height: 13px;
    background: var(--purple);
}

.node-icon {
    display: block;
    width: 1.7rem;
    height: 1.7rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.25;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.node-label {
    font-family: "Jost", sans-serif;
    font-weight: 300;
    font-size: 0.92rem;
    letter-spacing: 0.01em;
    color: var(--ink);
    transition:
        color 0.4s var(--ease),
        transform 0.4s var(--ease),
        opacity 0.4s var(--ease),
        font-size 0.45s var(--ease);
}

.node:hover .node-label,
.node:focus-visible .node-label {
    color: var(--ink);
    transform: translateY(-1px);
}

.node--hub {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-bottom: clamp(5.25rem, 22vh, 16rem);
    gap: 0.7rem;
}

.node--hub .node-label {
    font-size: clamp(1.35rem, 2.4vw, 1.7rem);
    letter-spacing: -0.02em;
}

.node--hub:hover .node-dot,
.node--hub:focus-visible .node-dot {
    background: var(--purple);
    transform: scale(1.28);
    box-shadow: 0 0 0 8px color-mix(in srgb, var(--purple) 14%, transparent);
}

.node:not(.node--hub):hover .node-dot,
.node:not(.node--hub):focus-visible .node-dot {
    transform: scale(1.08);
    box-shadow:
        0 2px 4px color-mix(in srgb, var(--ink) 9%, transparent),
        0 4px 14px color-mix(in srgb, var(--purple) 14%, transparent);
}

.node:focus-visible {
    outline: none;
}

.node--inne {
    z-index: 4;
}

.node--inne .node-label {
    transition:
        color 0.4s var(--ease),
        transform 0.4s var(--ease),
        opacity 0.52s linear,
        font-size 0.45s var(--ease);
}

.node--inne .node-label::after {
    content: "";
    display: inline-block;
    width: 0.38rem;
    height: 0.38rem;
    margin-left: 0.35rem;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: translateY(-0.12rem) rotate(45deg);
    transition: transform 0.45s var(--ease), opacity 0.35s var(--ease);
}

.scheme.is-expanded:not(.is-pinned) .node--inne .node-label {
    opacity: 0;
}

/* Extra labels: opacity is set in JS to match the icon slide. Hidden when closed. */
.scheme-row--more:not(.is-open) .node .node-label {
    opacity: 0;
}

.scheme.is-expanded .node--inne .node-label::after {
    transform: translateY(0.08rem) rotate(225deg);
}

.scheme.is-morphing .node--hub,
.scheme.is-morphing .node--inne {
    pointer-events: none;
}

.lexicave-dev-chip {
    position: fixed;
    left: 1rem;
    bottom: 1rem;
    z-index: 20;
    display: flex;
    gap: 0.55rem;
    padding: 0.35rem 0.65rem;
    border-radius: 0.4rem;
    background: #fff;
    font-size: 0.72rem;
    color: var(--mute);
    box-shadow: 0 1px 4px color-mix(in srgb, var(--ink) 10%, transparent);
}

.lexicave-dev-chip a {
    color: inherit;
}

@media (max-width: 860px) {
    .landing {
        grid-template-columns: 1fr;
        gap: 0;
        padding: 0 1.25rem 0;
    }

    .landing-scheme {
        position: relative;
        height: auto;
        width: auto;
        min-width: 0;
        margin-left: 0;
        min-height: 22rem;
        order: -1;
        align-items: center;
        justify-content: center;
    }

    .scheme.is-rail .scheme-stack {
        justify-content: center;
    }

    .scheme.is-rail .scheme-row {
        align-items: flex-start;
    }

    .scheme.is-pinned .node-label,
    .scheme.is-rail .node-label {
        font-size: 0.82rem;
    }

    .rail-progress {
        display: none;
    }

    .node--hub {
        margin-bottom: 2.5rem;
    }

    .landing-close {
        padding: 3.5rem 1.25rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .landing,
    .node,
    .node-label,
    .node-dot,
    .scheme-svg,
    .scheme-svg path,
    .rail-progress {
        transition: none !important;
    }
}