/* ==========================================================================
   Global layout, typography and shared UI
   ========================================================================== */

body {
    margin: 0;
    background-color: var(--color-bg-primary);
    color: var(--color-text);
    font-family: var(--font-base);
    font-size: var(--fs-body);
    font-weight: var(--fw-regular);
    line-height: var(--lh-base);
    min-height: 100dvh;
    overflow-x: hidden;
}

body.is-locked {
    overflow: hidden;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

.main {
    display: block;
    padding-bottom: var(--space-section);
}

.section {
    margin-top: var(--space-section);
}

/* --- Headings --------------------------------------------------------- */
h1,
h2,
h3,
h4 {
    color: var(--color-heading);
    font-family: var(--font-base);
    line-height: var(--lh-heading);
    text-wrap: balance;
}

h1 {
    font-size: var(--fs-h1);
    font-weight: var(--fw-black);
    color: var(--color-white);
}

h2 {
    font-size: var(--fs-h2);
    font-weight: var(--fw-bold);
}

h3 {
    font-family: var(--font-display);
    font-size: var(--fs-h3);
    font-weight: var(--fw-bold);
    color: var(--color-white);
    letter-spacing: .01em;
}

h4 {
    font-size: var(--fs-h4);
    font-weight: var(--fw-semibold);
    color: var(--color-white);
}

p {
    margin: 0;
}

strong {
    color: var(--color-white);
    font-weight: var(--fw-semibold);
}

/* --- Buttons ---------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xs);
    padding: var(--space-xs) var(--space-lg);
    min-height: 2.75rem;
    border-radius: var(--radius);
    clip-path: var(--clip-cut);
    color: var(--color-btn-text);
    font-size: var(--fs-body);
    font-weight: var(--fw-bold);
    letter-spacing: .02em;
    text-align: center;
    text-transform: uppercase;
    transition: filter var(--transition), transform var(--transition);
}

.btn--primary {
    background-image: var(--gradient-primary);
}

.btn--secondary {
    background-image: var(--gradient-secondary);
}

.btn--wide {
    width: 100%;
}

.btn:hover,
.btn:focus-visible {
    filter: brightness(1.18);
    transform: translateY(-2px);
}

/* --- Focus ------------------------------------------------------------ */
:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
}

/* --- Skip link -------------------------------------------------------- */
.skip-link {
    position: absolute;
    top: 0;
    left: 0;
    z-index: var(--z-top);
    padding: var(--space-2xs) var(--space-sm);
    background-image: var(--gradient-primary);
    color: var(--color-white);
    font-weight: var(--fw-semibold);
    transform: translateY(-120%);
    transition: transform var(--transition);
}

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

/* --- Breadcrumbs ------------------------------------------------------ */
.breadcrumbs {
    padding-block: var(--space-sm);
    font-size: var(--fs-small);
}

.breadcrumbs__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2xs);
    align-items: center;
    list-style: none;
}

.breadcrumbs__item::after {
    content: "/";
    margin-left: var(--space-2xs);
    color: var(--color-cold);
}

.breadcrumbs__item:last-child::after {
    content: none;
}

.breadcrumbs__link:hover {
    color: var(--color-heading);
}

.breadcrumbs__current {
    color: var(--color-heading);
}

/* --- Scroll-to-top ---------------------------------------------------- */
.to-top {
    position: fixed;
    right: clamp(.75rem, 2vw, 1.5rem);
    bottom: clamp(.75rem, 2vw, 1.5rem);
    z-index: var(--z-top);
    display: grid;
    place-items: center;
    width: 3rem;
    height: 3rem;
    background-image: var(--gradient-primary);
    clip-path: var(--clip-cut);
    color: var(--color-white);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
}

.to-top--visible {
    opacity: 1;
    pointer-events: auto;
}

.to-top:hover {
    transform: translateY(-3px);
}

.to-top__icon {
    width: 1.25rem;
    height: 1.25rem;
    fill: currentColor;
}

/* --- Reveal animation (opt-in via .js-reveal) ------------------------- */
.js .js-reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.js .js-reveal--visible {
    opacity: 1;
    transform: none;
}

/* --- Visually hidden -------------------------------------------------- */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

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

    .btn:hover,
    .btn:focus-visible,
    .to-top:hover {
        transform: none;
    }
}

/* --- Intro paragraph --------------------------------------------------- */
.intro {
    display: grid;
    gap: var(--space-md);
}

.intro__text {
    max-width: none;
    color: var(--color-white);
    font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
}