/* =========================================================
   AI Solutions — Section 4: AI in Action
   Scoped under .nx-ai-use-cases
   Does not modify Sections 1–3 or homepage.
   ========================================================= */

.nx-ai-use-cases {
    --nx-bg: #07080A;
    --nx-surface: #0D0F12;
    --nx-surface-2: #101217;
    --nx-text: #F5F7FA;
    --nx-text-muted: #9299A5;
    --nx-border: rgba(255, 255, 255, 0.08);
    --nx-accent: #4F7CFF;
    --nx-accent-hover: #6B8FFF;
    --nx-content: 1320px;
    --nx-pad: clamp(1.25rem, 4vw, 4rem);

    position: relative;
    background: var(--nx-bg);
    color: var(--nx-text);
    padding: clamp(5.5rem, 14vh, 10rem) 0;
    border-top: 1px solid var(--nx-border);
    overflow: hidden;
}

.nx-ai-use-cases__inner {
    width: 100%;
    max-width: var(--nx-content);
    margin: 0 auto;
    padding-left: var(--nx-pad);
    padding-right: var(--nx-pad);
}

/* ---------- Header ---------- */
.nx-ai-use-cases__header {
    max-width: 44rem;
    margin-bottom: clamp(3.5rem, 8vw, 6rem);
}

.nx-ai-use-cases__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    margin: 0 0 1.25rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--nx-text-muted);
}

.nx-ai-use-cases__eyebrow-accent {
    color: var(--nx-accent);
}

.nx-ai-page .nx-ai-use-cases h2.nx-ai-use-cases__title {
    margin: 0 0 1.25rem;
    font-family: var(--font-display, 'Syne', sans-serif);
    font-weight: 700;
    font-size: clamp(2.35rem, 5vw, 5.25rem);
    line-height: 1.02;
    letter-spacing: -0.035em;
    color: var(--nx-text);
    max-width: 13ch;
}

.nx-ai-use-cases__title span {
    display: block;
}

.nx-ai-use-cases__lede {
    margin: 0;
    max-width: 40rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: clamp(1rem, 1.3vw, 1.125rem);
    line-height: 1.65;
    color: var(--nx-text-muted);
}

/* ---------- Scenarios ---------- */
.nx-ai-use-cases__list {
    display: grid;
    gap: clamp(4.5rem, 10vw, 8.5rem);
}

.nx-ai-use-cases__scenario {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
}

.nx-ai-use-cases__scenario--reverse {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
}

.nx-ai-use-cases__scenario--reverse .nx-ai-use-cases__copy {
    order: 2;
}

.nx-ai-use-cases__scenario--reverse .nx-ai-use-cases__visual {
    order: 1;
}

.nx-ai-use-cases__copy {
    min-width: 0;
}

.nx-ai-use-cases__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
    margin-bottom: 1rem;
}

.nx-ai-use-cases__num {
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    color: rgba(245, 247, 250, 0.22);
}

.nx-ai-use-cases__category {
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--nx-accent);
}

.nx-ai-use-cases__badge {
    margin-left: auto;
    padding: 0.28rem 0.55rem;
    border: 1px solid var(--nx-border);
    border-radius: 999px;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(146, 153, 165, 0.85);
}

.nx-ai-page .nx-ai-use-cases h3.nx-ai-use-cases__headline {
    margin: 0 0 1rem;
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: clamp(1.7rem, 3vw, 2.6rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--nx-text);
    max-width: 12ch;
}

.nx-ai-use-cases__headline span {
    display: block;
}

.nx-ai-use-cases__desc {
    margin: 0 0 1.5rem;
    max-width: 34rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--nx-text-muted);
}

.nx-ai-use-cases__value-label {
    display: block;
    margin-bottom: 0.45rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(146, 153, 165, 0.75);
}

.nx-ai-use-cases__value {
    margin: 0 0 1.35rem;
    max-width: 32rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.95rem;
    line-height: 1.6;
    color: #c3c9d4;
}

.nx-ai-use-cases__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nx-ai-use-cases__tags li {
    padding: 0.32rem 0.6rem;
    border: 1px solid var(--nx-border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.02);
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--nx-text-muted);
}

.nx-ai-use-cases__context {
    margin: 1.15rem 0 0;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(146, 153, 165, 0.55);
}

/* ---------- Workflow panel ---------- */
.nx-ai-use-cases__visual {
    min-width: 0;
}

.nx-ai-use-cases__panel {
    position: relative;
    background: linear-gradient(165deg, rgba(16, 18, 23, 0.98), rgba(13, 15, 18, 0.98));
    border: 1px solid var(--nx-border);
    border-radius: 16px;
    padding: clamp(1rem, 2vw, 1.35rem);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35);
    overflow: hidden;
}

.nx-ai-use-cases__panel::before {
    content: "";
    position: absolute;
    top: -30%;
    right: -15%;
    width: 50%;
    height: 55%;
    background: radial-gradient(circle, rgba(79, 124, 255, 0.1), transparent 70%);
    pointer-events: none;
}

.nx-ai-use-cases__panel-head {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid var(--nx-border);
}

.nx-ai-use-cases__panel-label {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--nx-text-muted);
}

.nx-ai-use-cases__status {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #8fb0ff;
}

.nx-ai-use-cases__status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--nx-accent);
    animation: nx-ai-uc-pulse 2.8s ease-out infinite;
}

.nx-ai-use-cases__flow {
    position: relative;
    display: grid;
    gap: 0.55rem;
}

.nx-ai-use-cases__stage {
    position: relative;
    background: rgba(7, 8, 10, 0.55);
    border: 1px solid var(--nx-border);
    border-radius: 10px;
    padding: 0.75rem 0.85rem;
    opacity: 0;
    transform: translateY(8px);
}

.nx-ai-use-cases__scenario.is-visible .nx-ai-use-cases__stage {
    animation: nx-ai-uc-stage 0.7s ease forwards;
}

.nx-ai-use-cases__scenario.is-visible .nx-ai-use-cases__stage:nth-child(1) { animation-delay: 0.05s; }
.nx-ai-use-cases__scenario.is-visible .nx-ai-use-cases__stage:nth-child(3) { animation-delay: 0.2s; }
.nx-ai-use-cases__scenario.is-visible .nx-ai-use-cases__stage:nth-child(5) { animation-delay: 0.35s; }

.nx-ai-use-cases__stage--mid {
    border-color: rgba(79, 124, 255, 0.28);
    background: rgba(79, 124, 255, 0.06);
}

.nx-ai-use-cases__stage-kicker {
    display: block;
    margin-bottom: 0.3rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.6rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--nx-accent);
}

.nx-ai-use-cases__stage-title {
    margin: 0 0 0.45rem;
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--nx-text);
}

.nx-ai-use-cases__stage-body {
    margin: 0;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.84rem;
    line-height: 1.45;
    color: var(--nx-text-muted);
    font-style: italic;
}

.nx-ai-use-cases__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nx-ai-use-cases__chips li {
    padding: 0.22rem 0.48rem;
    border-radius: 6px;
    border: 1px solid var(--nx-border);
    background: rgba(255, 255, 255, 0.02);
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.7rem;
    color: var(--nx-text-muted);
}

.nx-ai-use-cases__actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.35rem;
}

.nx-ai-use-cases__action {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.5rem;
    border-radius: 7px;
    border: 1px solid var(--nx-border);
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.7rem;
    color: var(--nx-text-muted);
}

.nx-ai-use-cases__action i {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--nx-accent);
    flex-shrink: 0;
}

.nx-ai-use-cases__connector {
    position: relative;
    height: 0.9rem;
    display: flex;
    justify-content: center;
}

.nx-ai-use-cases__connector::before {
    content: "";
    width: 1px;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(79, 124, 255, 0.15),
        rgba(79, 124, 255, 0.7),
        rgba(79, 124, 255, 0.15)
    );
}

.nx-ai-use-cases__connector::after {
    content: "";
    position: absolute;
    top: 0;
    width: 1px;
    height: 35%;
    background: rgba(143, 176, 255, 0.95);
    box-shadow: 0 0 8px rgba(79, 124, 255, 0.75);
    animation: nx-ai-uc-flow 2.4s ease-in-out infinite;
}

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

/* ---------- Closing ---------- */
.nx-ai-use-cases__close {
    margin-top: clamp(4.5rem, 9vw, 7rem);
    padding-top: clamp(2rem, 4vw, 2.75rem);
    border-top: 1px solid var(--nx-border);
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) auto;
    gap: 1.5rem 2rem;
    align-items: end;
}

.nx-ai-use-cases__close-kicker {
    display: block;
    margin-bottom: 0.75rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--nx-accent);
}

.nx-ai-page .nx-ai-use-cases h3.nx-ai-use-cases__close-title {
    margin: 0 0 0.85rem;
    font-family: var(--font-display, 'Syne', sans-serif);
    font-size: clamp(1.35rem, 2.4vw, 1.9rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--nx-text);
    max-width: 22ch;
}

.nx-ai-use-cases__close-copy {
    margin: 0;
    max-width: 38rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--nx-text-muted);
}

.nx-ai-use-cases__close-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
}

.nx-ai-use-cases__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--nx-text);
    text-decoration: none;
    border-bottom: 1px solid rgba(245, 247, 250, 0.25);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.nx-ai-use-cases__cta:hover {
    color: #fff;
    border-bottom-color: rgba(245, 247, 250, 0.55);
}

.nx-ai-use-cases__cta:focus-visible {
    outline: 2px solid var(--nx-accent);
    outline-offset: 3px;
}

.nx-ai-use-cases__cta span[aria-hidden="true"] {
    transition: transform 0.2s ease;
}

.nx-ai-use-cases__cta:hover span[aria-hidden="true"] {
    transform: translateX(3px);
}

.nx-ai-use-cases__work-link {
    font-family: var(--font-body, 'DM Sans', sans-serif);
    font-size: 0.85rem;
    color: var(--nx-text-muted);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.nx-ai-use-cases__work-link:hover {
    color: var(--nx-text);
    border-bottom-color: rgba(245, 247, 250, 0.3);
}

.nx-ai-use-cases__work-link:focus-visible {
    outline: 2px solid var(--nx-accent);
    outline-offset: 3px;
}

/* ---------- Reveal ---------- */
.nx-ai-use-cases .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition:
        opacity 0.7s ease,
        transform 0.7s ease;
}

.nx-ai-use-cases .reveal.is-visible {
    opacity: 1;
    transform: none;
}

@keyframes nx-ai-uc-pulse {
    0% { box-shadow: 0 0 0 0 rgba(79, 124, 255, 0.55); }
    70% { box-shadow: 0 0 0 8px rgba(79, 124, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(79, 124, 255, 0); }
}

@keyframes nx-ai-uc-flow {
    0% { top: 0; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 65%; opacity: 0; }
}

@keyframes nx-ai-uc-stage {
    to {
        opacity: 1;
        transform: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .nx-ai-use-cases .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .nx-ai-use-cases__status-dot,
    .nx-ai-use-cases__connector::after,
    .nx-ai-use-cases__stage {
        animation: none;
    }

    .nx-ai-use-cases__stage {
        opacity: 1;
        transform: none;
    }

    .nx-ai-use-cases__cta span[aria-hidden="true"] {
        transition: none;
    }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
    .nx-ai-use-cases__scenario,
    .nx-ai-use-cases__scenario--reverse {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }

    .nx-ai-use-cases__scenario--reverse .nx-ai-use-cases__copy,
    .nx-ai-use-cases__scenario--reverse .nx-ai-use-cases__visual {
        order: initial;
    }

    .nx-ai-page .nx-ai-use-cases h3.nx-ai-use-cases__headline {
        max-width: 14ch;
    }

    .nx-ai-use-cases__close {
        grid-template-columns: 1fr;
        align-items: start;
    }
}

@media (max-width: 480px) {
    .nx-ai-page .nx-ai-use-cases h2.nx-ai-use-cases__title,
    .nx-ai-page .nx-ai-use-cases h3.nx-ai-use-cases__headline {
        max-width: none;
    }

    .nx-ai-use-cases__actions {
        grid-template-columns: 1fr;
    }

    .nx-ai-use-cases__badge {
        margin-left: 0;
    }
}