/* ============================================
   Layout — Grid, Container, Sections, Header, Footer
   ============================================ */

/* ── Container ── */
.container { 
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.container--narrow {
    max-width: var(--container-narrow);
}

.container--wide {
    max-width: var(--container-wide);
}

/* ── Section ── */
.section {
    padding-block: var(--section-padding);
    position: relative;
}

.section--alt {
    background-color: var(--color-bg-secondary);
}

.section--elevated {
    background-color: var(--color-bg-elevated);
}

.section__header {
    margin-bottom: var(--space-3xl);
}

.section__header--center {
    text-align: center;
}

.section__header--center .section-subtitle {
    margin-inline: auto;
}

/* ── Grid System ── */
.grid {
    display: grid;
    gap: var(--grid-gap);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid--auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ── Flex Utilities ── */
.flex {
    display: flex;
}

.flex--center {
    align-items: center;
    justify-content: center;
}

.flex--between {
    justify-content: space-between;
    align-items: center;
}

.flex--col {
    flex-direction: column;
}

.flex--wrap {
    flex-wrap: wrap;
}

.flex--gap-sm {
    gap: var(--space-sm);
}

.flex--gap-md {
    gap: var(--space-md);
}

.flex--gap-lg {
    gap: var(--space-lg);
}

/* ── Header ── */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: var(--z-sticky);
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
    background-color: var(--color-header-scrolled);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 var(--color-border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: var(--fw-bold);
    font-size: var(--fs-md);
    color: var(--color-text-primary);
    letter-spacing: var(--ls-tight);
    white-space: nowrap;
}

.header__logo-mark {
    width: 32px;
    height: 32px;
    background-color: var(--color-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-weight: var(--fw-black);
    font-size: var(--fs-sm);
    color: var(--color-text-inverse);
}

/* ── Navigation ── */
.nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav__link {
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
    padding-block: var(--space-xs);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-text-primary);
}

.nav__link--active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
}

/* Language Switcher */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 2px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.lang-switch__btn {
    padding: var(--space-2xs) var(--space-xs);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: var(--ls-wide);
    transition: all var(--transition-fast);
    border-right: 1px solid var(--color-border);
}

.lang-switch__btn:last-child {
    border-right: none;
}

.lang-switch__btn:hover {
    color: var(--color-text-primary);
    background-color: var(--color-bg-hover);
}

.lang-switch__btn--active {
    color: var(--color-accent);
    background-color: var(--color-accent-subtle);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    padding: var(--space-xs) 0;
}

.nav-toggle__line {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: transform var(--transition-base), opacity var(--transition-fast);
    transform-origin: center;
}

.nav-toggle--open .nav-toggle__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle--open .nav-toggle__line:nth-child(2) {
    opacity: 0;
}

.nav-toggle--open .nav-toggle__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── Hero Section ── */
.hero {
    /*min-height: 100dvh;*/
    display: flex;
    align-items: stretch;
    position: relative;
    overflow: hidden;
    padding-top: 140px;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

/* Industrial grid pattern */
.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.3;
}

/* Accent glow */
.hero__glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
    top: 20%;
    right: -10%;
    filter: blur(80px);
}

.hero__inner {
    display: flex;
    align-items: flex-end;
    gap: var(--space-2xl);
    width: 100%;
    /*min-height: calc(100dvh - 140px);*/
}

.hero__content {
    position: relative;
    z-index: var(--z-base);
    flex: 1;
    align-self: center;
    max-width: none;
    padding-top: var(--space-1xl);
    padding-bottom: var(--space-3xl);
}

.hero__portrait {
    flex: 0 0 40%;
    align-self: stretch;
    position: relative;
    z-index: var(--z-base);
    background-image: url('/assets/img/mario/mario-busto.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: bottom center;
}

.hero__claim {
    margin-bottom: var(--space-lg);
}

.hero__stats {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-3xl);
}

.hero__stat {
    border-left: 2px solid var(--color-accent);
    padding-left: var(--space-md);
}

.hero__stat-value {
    font-family: var(--font-mono);
    font-size: var(--fs-2xl);
    font-weight: var(--fw-bold);
    color: var(--color-accent);
    line-height: 1;
}

.hero__stat-label {
    font-size: var(--fs-sm);
    color: var(--color-text-primary);
    margin-top: var(--space-2xs);
}

/* ── Footer ── */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding-block: var(--space-3xl);
}

.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
}

.footer__brand {
    max-width: 320px;
}

.footer__brand-desc {
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-md);
    line-height: var(--lh-relaxed);
}

.footer__heading {
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: var(--ls-wider);
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.footer__link {
    display: block;
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    padding-block: var(--space-2xs);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-accent);
}

.footer__bottom {
    margin-top: var(--space-3xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--fs-xs);
    color: var(--color-text-muted);
}

/* ── Main Content ── */
main {
    padding-top: var(--header-height);
}

.section--first { 
    padding-top: var(--space-lg);
}

/* ── Page Intro with Portrait ── */
.page-intro {
    display: flex;
    align-items: flex-end;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    min-height: 300px;
}

.page-intro .section__header {
    flex: 1;
    align-self: center;
    margin-bottom: 0;
}

.page-intro__portrait {
  flex: 0 0 35%;
  align-self: stretch;
  background-image: url('/assets/img/mario/mario-front-1.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: 0 10px;

  /* fade bottom → transparent */
  -webkit-mask-image: linear-gradient(to bottom, black 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 70%, transparent 100%);

  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;

  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
}

/* Modifier per casi studio — sovrascrive solo l'immagine */
.page-intro__portrait--cases {
    background-image: url('/assets/img/mario/mario-front.png'); /* sostituire con img specifica */
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    /* Mobile Nav */
    .nav-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(320px, 85vw);
        height: 100dvh;
        overflow-y: auto;
        background-color: var(--color-bg-elevated);
        flex-direction: column;
        align-items: flex-start;
        padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
        transition: right var(--transition-base);
        z-index: var(--z-overlay);
        border-left: 1px solid var(--color-border);
    }

    .nav--open {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
        width: 100%;
    }

    .nav__link {
        font-size: var(--fs-base);
        padding-block: var(--space-sm);
        width: 100%;
        display: block;
    }

    .lang-switch {
        margin-top: var(--space-xl);
    } 

    /* Overlay */
    .nav-overlay {
        position: fixed;
        inset: 0;
        background-color: rgba(0, 0, 0, 0.6);
        z-index: calc(var(--z-overlay) - 1);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-base);
    }

    .nav-overlay--visible {
        opacity: 1;
        pointer-events: auto;
    }

    /* Grid */
    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    /* Hero */
    .hero__inner {
        flex-direction: column;
        align-items: center;
        min-height: auto;
        padding-block: var(--space-xl);
        gap: var(--space-xl); padding-bottom:0;
    }

    .hero__content {
        align-self: auto;
        padding-top: 0;
        padding-bottom: 0;
        width: 100%;
    }

    .hero__portrait {
        flex: 0 0 auto;
        width: 100%;
        /*max-width: 320px;*/
        min-height: 320px;
        background-position: bottom center;
    }

    .page-intro {
        flex-direction: column;
        min-height: auto;
        gap: var(--space-lg);
    }

    .page-intro__portrait {
        width: 65%;
        max-width: 240px;
        align-self: center;
        min-height: 220px;
    }

    .hero__stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    /* Footer */
    .footer__inner {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}