/* ============================================================
   RELL S.R.L. — layout.css
   Grid, container, sezioni, spacing macro
   ============================================================ */

/* --------------------------------------------------------
   CONTAINER
-------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-inline: auto;
    padding-inline: var(--space-6);
}

.container--sm  { max-width: var(--container-sm); }
.container--md  { max-width: var(--container-md); }
.container--lg  { max-width: var(--container-lg); }
.container--2xl { max-width: var(--container-2xl); }

/* --------------------------------------------------------
   SECTION
-------------------------------------------------------- */
.section {
    padding-block: var(--space-24);
}

.section--sm {
    padding-block: var(--space-16);
}

.section--lg {
    padding-block: var(--space-32);
}

/* Varianti sfondo */
.section--dark    { background-color: var(--color-bg); }
.section--surface { background-color: var(--color-surface); }
.section--surface-2 { background-color: var(--color-surface-2); }

/* --------------------------------------------------------
   GRID SYSTEM
-------------------------------------------------------- */
.grid {
    display: grid;
    gap: var(--space-6);
}

.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-sm { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.grid--auto-md { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid--auto-lg { grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); }

/* --------------------------------------------------------
   FLEX HELPERS
-------------------------------------------------------- */
.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col     { flex-direction: column; }
.flex-wrap    { flex-wrap: wrap; }
.gap-2        { gap: var(--space-2); }
.gap-4        { gap: var(--space-4); }
.gap-6        { gap: var(--space-6); }
.gap-8        { gap: var(--space-8); }

/* --------------------------------------------------------
   SECTION HEADER (titolo + sottotitolo di sezione)
-------------------------------------------------------- */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-header--left {
    text-align: left;
}

.section-label {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: var(--color-accent);
    margin-bottom: var(--space-4);
}

.section-title {
    font-family: var(--font-display);
    font-weight: var(--weight-black);
    font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 65ch;
    margin-inline: auto;
    line-height: var(--leading-relaxed);
}

.section-header--left .section-subtitle {
    margin-inline: 0;
}

/* --------------------------------------------------------
   ACCENT LINE
-------------------------------------------------------- */
.accent-line {
    display: block;
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    margin-bottom: var(--space-6);
    border-radius: var(--radius-full);
}

.accent-line--center {
    margin-inline: auto;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}

/* --------------------------------------------------------
   TWO COLUMN SPLIT
-------------------------------------------------------- */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.split--3-2 { grid-template-columns: 3fr 2fr; }
.split--2-3 { grid-template-columns: 2fr 3fr; }

/* --------------------------------------------------------
   HERO BASE
-------------------------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-color: var(--color-bg);
}

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

.hero__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.35;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(10, 12, 15, 0.95) 0%,
        rgba(10, 12, 15, 0.7) 50%,
        rgba(10, 12, 15, 0.4) 100%
    );
}

.hero__content {
    position: relative;
    z-index: 1;
}

/* Hero pagine interne */
.hero--inner {
    min-height: 320px;
    padding-block: var(--space-32) var(--space-20);
}

.hero--inner .hero__bg img {
    opacity: 0.2;
}

/* --------------------------------------------------------
   STICKY HEADER OFFSET
-------------------------------------------------------- */
.page-content {
    padding-top: var(--header-height);
}

/* --------------------------------------------------------
   VISIBILITY HELPERS
-------------------------------------------------------- */
.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;
}

.hidden { display: none !important; }

/* --------------------------------------------------------
   SPACING UTILITIES
-------------------------------------------------------- */
.mt-0  { margin-top: 0; }
.mt-4  { margin-top: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-8  { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }