/*
|--------------------------------------------------------------------------
| Foundation
|--------------------------------------------------------------------------
*/

:root {
    --color-forge-black: #050505;
    --color-deep-black: #090909;
    --color-panel: #101010;
    --color-tempered-steel: #b9b1a7;
    --color-forged-ivory: #e7dfd3;
    --color-ash: #8f8982;
    --color-muted: #69645f;
    --color-ember: #ff6500;
    --color-molten: #ff8a19;
    --color-gold: #d5a44f;
    --color-border: rgba(213, 164, 79, 0.22);

    --font-display:
        Georgia,
        "Times New Roman",
        serif;

    --font-body:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    --content-width: 78rem;

    --transition-fast: 180ms ease;
    --transition-standard: 320ms ease;
}

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

html {
    color-scheme: dark;
    scroll-behavior: smooth;
    background: var(--color-forge-black);
}

body {
    margin: 0;

    color: var(--color-forged-ivory);
    background: var(--color-forge-black);

    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;

    overflow-x: hidden;
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

[hidden] {
    display: none !important;
}

/*
|--------------------------------------------------------------------------
| Accessibility
|--------------------------------------------------------------------------
*/

.skip-link {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1000;

    padding: 0.75rem 1rem;

    color: var(--color-forge-black);
    background: var(--color-forged-ivory);

    border-radius: 0.25rem;

    transform: translateY(-200%);
    transition: transform var(--transition-fast);
}

.skip-link:focus {
    transform: translateY(0);
}

/*
|--------------------------------------------------------------------------
| Header
|--------------------------------------------------------------------------
*/

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;

    width: 100%;
    min-height: 5.25rem;

    padding:
        0.75rem
        clamp(1rem, 4vw, 4rem);

    background:
        linear-gradient(
            to bottom,
            rgba(5, 5, 5, 0.96),
            rgba(5, 5, 5, 0.72),
            transparent
        );

    transition:
        background var(--transition-standard),
        border-color var(--transition-standard);
}

.site-header.is-scrolled {
    background: rgba(5, 5, 5, 0.94);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(1rem);
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.site-brand__mark {
    width: 3rem;
    height: 3rem;

    border-radius: 50%;

    filter:
        drop-shadow(
            0 0 0.7rem
            rgba(255, 101, 0, 0.25)
        );
}

.site-brand__name {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 700;
    letter-spacing: 0.04em;
}

.site-navigation {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 2.5vw, 2rem);

    color: var(--color-tempered-steel);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-navigation a {
    transition:
        color var(--transition-fast),
        border-color var(--transition-fast);
}

.site-navigation a:hover,
.site-navigation a:focus-visible {
    color: var(--color-forged-ivory);
}

.site-navigation__cta {
    padding: 0.65rem 1rem;

    border: 1px solid var(--color-border);
    border-radius: 999px;
}

/*
|--------------------------------------------------------------------------
| Shared controls
|--------------------------------------------------------------------------
*/

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 3.25rem;

    padding:
        0.85rem
        1.35rem;

    border: 1px solid transparent;
    border-radius: 0.25rem;

    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    line-height: 1;
    text-transform: uppercase;

    cursor: pointer;

    transition:
        transform var(--transition-fast),
        border-color var(--transition-fast),
        background var(--transition-fast),
        color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
}

.button--primary {
    color: #120700;

    background:
        linear-gradient(
            135deg,
            #ff9b27,
            #ff5b00
        );

    box-shadow:
        0 0 1.75rem
        rgba(255, 91, 0, 0.22);
}

.button--primary:hover,
.button--primary:focus-visible {
    box-shadow:
        0 0 2.2rem
        rgba(255, 91, 0, 0.4);
}

.button--ghost {
    color: var(--color-tempered-steel);
    background: transparent;
    border-color: var(--color-border);
}

.button--ghost:hover,
.button--ghost:focus-visible {
    color: var(--color-forged-ivory);
    border-color: rgba(255, 138, 25, 0.6);
}

/*
|--------------------------------------------------------------------------
| Opening statement
|--------------------------------------------------------------------------
*/

.opening-statement {
    display: grid;
    place-items: center;

    min-height: 100vh;

    padding:
        8rem
        clamp(1.25rem, 5vw, 5rem);

    background:
        radial-gradient(
            circle at center,
            rgba(255, 101, 0, 0.07),
            transparent 55%
        ),
        var(--color-deep-black);
}

.opening-statement__content {
    width: min(55rem, 100%);

    text-align: center;
}

.section-eyebrow {
    margin: 0 0 1.5rem;

    color: var(--color-molten);

    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.opening-statement h2 {
    margin: 0;

    font-family: var(--font-display);
    font-size: clamp(2.6rem, 7vw, 6.5rem);
    font-weight: 500;
    line-height: 0.98;
    text-wrap: balance;
}

.opening-statement p:last-child {
    width: min(42rem, 100%);

    margin:
        2.5rem
        auto
        0;

    color: var(--color-tempered-steel);
    font-size: clamp(1.05rem, 2vw, 1.35rem);
}

/*
|--------------------------------------------------------------------------
| Footer
|--------------------------------------------------------------------------
*/

.site-footer {
    display: flex;
    justify-content: space-between;
    gap: 2rem;

    padding:
        2rem
        clamp(1rem, 4vw, 4rem);

    color: var(--color-muted);
    background: var(--color-forge-black);

    border-top: 1px solid var(--color-border);

    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/*
|--------------------------------------------------------------------------
| Responsive
|--------------------------------------------------------------------------
*/

@media (max-width: 46rem) {
    .site-navigation a:not(.site-navigation__cta) {
        display: none;
    }

    .site-brand__name {
        display: none;
    }

    .site-footer {
        flex-direction: column;
        text-align: center;
    }
}

/*
|--------------------------------------------------------------------------
| Reduced motion
|--------------------------------------------------------------------------
*/

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
    }

    .difference__statement--ordinary {
        opacity: 0;
    }

    .difference__statement--foundry {
        opacity: 1;
        transform: none;
    }

    .difference__spark {
        display: none;
    }
}



/*
|--------------------------------------------------------------------------
| The Difference
|--------------------------------------------------------------------------
*/

.difference {
    position: relative;
    isolation: isolate;

    display: grid;
    place-items: center;

    min-height: 180vh;

    padding:
        8rem
        clamp(1.25rem, 5vw, 5rem);

    overflow: hidden;

    background:
        radial-gradient(
            circle at center,
            rgba(255, 101, 0, 0.035),
            transparent 46%
        ),
        #030303;
}

.difference::before {
    content: "";

    position: absolute;
    inset: 0;
    z-index: -2;

    background:
        linear-gradient(
            to bottom,
            rgba(255, 255, 255, 0.012),
            transparent 24%,
            transparent 76%,
            rgba(255, 101, 0, 0.02)
        );
}

.difference__stage {
    position: sticky;
    top: 0;

    display: grid;
    place-items: center;

    width: 100%;
    min-height: 100svh;

    text-align: center;
}

.difference__statement {
    position: absolute;

    display: grid;
    justify-items: center;
    gap: 1.5rem;

    width: min(68rem, 100%);

    opacity: 0;

    transform:
        translateY(2rem)
        scale(0.985);

    transition:
        opacity 1.4s ease,
        transform 1.6s
        cubic-bezier(0.22, 1, 0.36, 1),
        filter 1.4s ease;

    pointer-events: none;
}

.difference__statement.is-visible {
    opacity: 1;

    transform:
        translateY(0)
        scale(1);
}

.difference__statement.is-leaving {
    opacity: 0;

    transform:
        translateY(-1.5rem)
        scale(0.992);

    filter: blur(0.3rem);
}

.difference__lead {
    margin: 0;

    color: var(--color-ash);

    font-size: clamp(
        0.75rem,
        1.5vw,
        0.95rem
    );

    font-weight: 800;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.difference__question {
    margin: 0;

    font-family: var(--font-display);
    font-size: clamp(
        3rem,
        8vw,
        7.5rem
    );

    font-weight: 500;
    line-height: 0.98;
    letter-spacing: -0.035em;
    text-wrap: balance;
}

.difference__statement--ordinary
.difference__question {
    color: var(--color-tempered-steel);
}

.difference__statement--foundry
.difference__question {
    color: var(--color-forged-ivory);

    text-shadow:
        0 0 2.5rem
        rgba(255, 101, 0, 0.16);
}

.difference__statement--foundry
.difference__lead {
    color: var(--color-molten);
}

/*
|--------------------------------------------------------------------------
| Difference spark
|--------------------------------------------------------------------------
*/

.difference__spark {
    position: absolute;

    width: 0.35rem;
    height: 0.35rem;

    opacity: 0;

    border-radius: 50%;

    background: #fff1bd;

    box-shadow:
        0 0 0.7rem
        rgba(255, 179, 64, 0.95),
        0 0 1.8rem
        rgba(255, 91, 0, 0.78);

    transform: scale(0.2);
}

.difference__spark::before,
.difference__spark::after {
    content: "";

    position: absolute;
    top: 50%;
    left: 50%;

    background:
        linear-gradient(
            to right,
            transparent,
            rgba(255, 124, 24, 0.95),
            transparent
        );

    transform:
        translate(-50%, -50%);
}

.difference__spark::before {
    width: 5rem;
    height: 1px;
}

.difference__spark::after {
    width: 1px;
    height: 5rem;

    background:
        linear-gradient(
            to bottom,
            transparent,
            rgba(255, 124, 24, 0.95),
            transparent
        );
}

.difference__spark.is-igniting {
    animation:
        difference-spark-ignite
        1.35s
        ease-out
        forwards;
}

@keyframes difference-spark-ignite {
    0% {
        opacity: 0;
        transform: scale(0.2);
    }

    32% {
        opacity: 1;
        transform: scale(1.5);
    }

    58% {
        opacity: 0.9;
        transform: scale(1);
    }

    100% {
        opacity: 0;
        transform: scale(0.15);
    }
}

/*
|--------------------------------------------------------------------------
| Difference responsive
|--------------------------------------------------------------------------
*/

@media (max-width: 46rem) {
    .difference {
        min-height: 160vh;
    }

    .difference__question {
        font-size: clamp(
            2.6rem,
            13vw,
            4.8rem
        );
    }
}

@media (max-width: 46rem) {
    .creative-memory__composition {
        grid-template-columns: 1fr;

        align-content: center;
        gap: 3rem;

        width: min(
            34rem,
            calc(100% - 2.5rem)
        );
    }

    .creative-memory__header {
        transform: none;
    }

    .creative-memory__composition.is-expanded
    .creative-memory__header {
        text-align: center;

        transform:
            translateY(-1.5rem)
            scale(0.78);

        transform-origin: center;
    }

    .creative-memory__discoveries {
        justify-self: center;

        width: min(26rem, 100%);
    }
}