/* ============================================================
   DS-APPLE — Layout System
   Grid, Containers, Sections e Dobras
   ============================================================ */

/* ──────────────────────────────────────────
   CONTAINERS
─────────────────────────────────────────── */

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

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

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

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

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

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

.ds-container--2xl {
    max-width: var(--container-2xl);
}

.ds-container--fluid {
    max-width: none;
}

/* ──────────────────────────────────────────
   SEÇÕES — DOBRAS (Sections)
   Emula blocos completos estilo Apple.com
─────────────────────────────────────────── */

.ds-section {
    width: 100%;
    padding-block: var(--section-padding-y);
    position: relative;
    overflow: hidden;
}

/* Fundos de seção */
.ds-section--white {
    background-color: var(--color-bg-primary);
}

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

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

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

/* Hero — ocupa toda a viewport */
.ds-section--hero {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-block: var(--section-padding-hero-y);
    text-align: center;
}

.ds-section--hero-short {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-block: var(--section-padding-hero-y);
    text-align: center;
}

/* Seção com padding reduzido */
.ds-section--compact {
    padding-block: var(--space-12);
}

/* Seção com separação por borda */
.ds-section--bordered {
    border-bottom: 1px solid var(--color-border-light);
}

.ds-section--dark.ds-section--bordered,
.ds-section--dark-alt.ds-section--bordered {
    border-bottom-color: var(--color-border-dark);
}

/* ──────────────────────────────────────────
   CABEÇALHO DE SEÇÃO
─────────────────────────────────────────── */

.ds-section__header {
    text-align: center;
    max-width: var(--container-md);
    margin-inline: auto;
    margin-bottom: var(--space-16);
}

.ds-section__header--left {
    text-align: left;
    margin-inline: 0;
}

.ds-section__eyebrow {
    font-family: var(--font-text);
    font-size: var(--text-caption);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-caps);
    text-transform: uppercase;
    color: var(--color-accent);
    display: block;
    margin-bottom: var(--space-3);
}

.ds-section__title {
    font-family: var(--font-display);
    font-size: var(--text-display);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-display);
    letter-spacing: var(--letter-spacing-display);
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
}

.ds-section__subtitle {
    font-size: var(--text-title);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-body);
    color: var(--color-text-secondary);
}

.ds-section--dark .ds-section__title {
    color: var(--color-text-white);
}

.ds-section--dark .ds-section__subtitle {
    color: var(--color-text-on-dark-muted);
}

/* ──────────────────────────────────────────
   GRID SYSTEM — CSS Grid Flexível
─────────────────────────────────────────── */

.ds-grid {
    display: grid;
    gap: var(--space-6);
}

/* Colunas automáticas responsivas */
.ds-grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

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

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

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

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

.ds-grid--auto-lg {
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
}

/* Gap Variants */
.ds-grid--gap-sm {
    gap: var(--space-3);
}

.ds-grid--gap-md {
    gap: var(--space-6);
}

.ds-grid--gap-lg {
    gap: var(--space-8);
}

.ds-grid--gap-xl {
    gap: var(--space-12);
}

/* ──────────────────────────────────────────
   FLEXBOX UTILITIES
─────────────────────────────────────────── */

.ds-flex {
    display: flex;
    gap: var(--space-4);
}

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

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

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

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

.ds-flex--gap-sm {
    gap: var(--space-2);
}

.ds-flex--gap-md {
    gap: var(--space-4);
}

.ds-flex--gap-lg {
    gap: var(--space-8);
}

/* ──────────────────────────────────────────
   DOBRA: HERO SPLIT (Texto + Imagem)
─────────────────────────────────────────── */

.ds-hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    min-height: 80vh;
    padding-block: var(--section-padding-hero-y);
}

.ds-hero-split__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.ds-hero-split__media {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.ds-hero-split__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
}

/* ──────────────────────────────────────────
   DOBRA: FEATURE ROW (Ícone + Texto)
─────────────────────────────────────────── */

.ds-feature-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-12);
    align-items: start;
}

.ds-feature-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.ds-feature-item__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.ds-section--dark .ds-feature-item__icon {
    background: var(--color-bg-card-dark);
}

.ds-feature-item__title {
    font-family: var(--font-display);
    font-size: var(--text-title);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.ds-feature-item__body {
    font-size: var(--text-body-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-body);
}

/* ──────────────────────────────────────────
   DOBRA: STATS ROW
─────────────────────────────────────────── */

.ds-stats-row {
    display: flex;
    gap: var(--space-12);
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
}

.ds-stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 120px;
}

.ds-stat__border {
    padding-inline: var(--space-12);
    border-right: 1px solid var(--color-border-light);
}

.ds-stat__border:last-child {
    border-right: none;
}

.ds-section--dark .ds-stat__border {
    border-right-color: var(--color-border-dark);
}

/* ──────────────────────────────────────────
   MEDIA CONTAINER — Aspect ratios
─────────────────────────────────────────── */

.ds-media {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--radius-xl);
    background: var(--color-bg-secondary);
}

.ds-media--16-9 {
    aspect-ratio: 16 / 9;
}

.ds-media--4-3 {
    aspect-ratio: 4 / 3;
}

.ds-media--1-1 {
    aspect-ratio: 1 / 1;
}

.ds-media--3-4 {
    aspect-ratio: 3 / 4;
}

.ds-media img,
.ds-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: inherit;
}

/* ──────────────────────────────────────────
   DIVIDER
─────────────────────────────────────────── */

.ds-divider {
    border: none;
    border-top: 1px solid var(--color-border-light);
    margin-block: var(--space-8);
}

.ds-section--dark .ds-divider,
.ds-divider--dark {
    border-top-color: var(--color-border-dark);
}

/* ──────────────────────────────────────────
   STICKY NAV DE SEÇÃO (AnchorBar)
─────────────────────────────────────────── */

.ds-anchor-bar {
    position: sticky;
    top: 44px;
    /* Abaixo do header */
    z-index: var(--z-sticky);
    background: var(--color-bg-nav);
    backdrop-filter: saturate(180%) blur(var(--blur-lg));
    -webkit-backdrop-filter: saturate(180%) blur(var(--blur-lg));
    border-bottom: 1px solid var(--color-divider);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-3) var(--container-padding);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.ds-anchor-bar::-webkit-scrollbar {
    display: none;
}

.ds-anchor-bar__link {
    font-size: var(--text-callout);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-primary);
    white-space: nowrap;
    padding-block: var(--space-2);
    border-bottom: 2px solid transparent;
    transition: color var(--duration-base), border-color var(--duration-base);
    text-decoration: none;
}

.ds-anchor-bar__link:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.ds-anchor-bar__link.is-active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ──────────────────────────────────────────
   RESPONSIVE — Breakpoints
─────────────────────────────────────────── */

/* Tablet: ≤ 980px */
@media (max-width: 980px) {
    .ds-grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .ds-hero-split {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }

    .ds-hero-split--reverse .ds-hero-split__media {
        order: -1;
    }

    .ds-stats-row {
        gap: var(--space-8);
    }
}

/* Mobile: ≤ 660px */
@media (max-width: 660px) {
    .ds-section {
        padding-block: var(--space-16);
    }

    .ds-section--hero {
        min-height: auto;
        padding-block: var(--space-24);
    }

    .ds-grid--2 {
        grid-template-columns: 1fr;
    }

    .ds-grid--3 {
        grid-template-columns: 1fr;
    }

    .ds-grid--4 {
        grid-template-columns: 1fr;
    }

    .ds-section__title {
        font-size: var(--text-title-xl);
    }

    .ds-section__subtitle {
        font-size: var(--text-body-lg);
    }

    .ds-stats-row {
        flex-direction: column;
        align-items: center;
    }

    .ds-stat__border {
        border-right: none;
        border-bottom: 1px solid var(--color-border-light);
        padding-inline: 0;
        padding-bottom: var(--space-8);
    }

    .ds-anchor-bar {
        justify-content: flex-start;
    }
}