/* ==========================================================================
   SOFÁS DO SÉRGIO - DESIGN SYSTEM MOBILE-FIRST & FLUID CSS
   Auditoria e Refatoração UI/UX (Unidades Relativas rem + clamp())
   ========================================================================== */

:root {
    /* Paleta de Cores */
    --color-primary: #ea580c;
    --color-primary-hover: #c2410c;
    --color-secondary: #1e293b;
    --color-bg: #f8f9fa;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-success: #16a34a;

    /* Tipografia Fluida com clamp() (Escalonamento harmonioso Mobile -> Desktop) */
    --font-xs: clamp(0.6875rem, 0.64rem + 0.24vw, 0.75rem);     /* 11px -> 12px */
    --font-sm: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);       /* 12px -> 14px */
    --font-base: clamp(0.875rem, 0.83rem + 0.25vw, 1rem);       /* 14px -> 16px */
    --font-md: clamp(0.9375rem, 0.88rem + 0.3vw, 1.125rem);     /* 15px -> 18px */
    --font-lg: clamp(1.0625rem, 0.95rem + 0.55vw, 1.375rem);    /* 17px -> 22px */
    --font-xl: clamp(1.25rem, 1.05rem + 1vw, 1.875rem);         /* 20px -> 30px */
    --font-price: clamp(1.05rem, 0.9rem + 0.75vw, 1.5rem);      /* 16.8px -> 24px */

    /* Espaçamentos e Paddings Fluidos */
    --space-card: clamp(0.625rem, 1.5vw, 1rem);                 /* 10px -> 16px */
    --space-section-y: clamp(1.75rem, 4vw, 3rem);               /* 28px -> 48px */
    --space-container-x: clamp(0.75rem, 2.5vw, 1.5rem);         /* 12px -> 24px */
    --grid-gap-vitrine: clamp(0.75rem, 1.8vw, 1rem);            /* 12px -> 16px */

    /* Zona do Polegar (Thumb Zone - mínimo 48x48px = 3rem) */
    --touch-target-min: 3rem;                                   /* 48px */
    --radius-card: 0.625rem;                                    /* 10px */
    --radius-btn: 0.5rem;                                       /* 8px */
}

html {
    font-size: 100%; /* 1rem = 16px base */
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: var(--font-base);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Quando a barra Sticky CTA estiver ativa no mobile, garante espaço no rodapé */
@media (max-width: 767.98px) {
    body.has-sticky-cta {
        padding-bottom: 5.25rem; /* 84px */
    }
}

/* Utilitários de Scrollbar */
.no-scrollbar::-webkit-scrollbar {
    display: none;
}
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* ==========================================================================
   1. DIAGNÓSTICO & CORREÇÃO DE ELEMENTOS MOBILE (< 768px)
   ========================================================================== */

/* Container fluido com respiro adequado no mobile */
.app-container {
    width: 100%;
    max-width: 80rem; /* 1280px */
    margin-inline: auto;
    padding-inline: var(--space-container-x);
}

.section-spacing {
    padding-block: var(--space-section-y);
}

.section-title {
    font-size: var(--font-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: clamp(1.25rem, 3vw, 2.25rem);
    letter-spacing: -0.02em;
}

/* Hero Banner proporcional em Mobile e Desktop */
.hero-banner-img {
    width: 100%;
    height: clamp(11.5rem, 38vw, 31.25rem); /* 184px -> 500px */
    object-fit: cover;
    display: block;
}

/* Barra de Benefícios: legível no mobile com scroll horizontal suave ou grid responsivo */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(8.5rem, 1fr));
    gap: 0.75rem;
    overflow-x: auto;
    padding-block: 0.25rem;
    scroll-snap-type: x mandatory;
}

.benefit-item {
    scroll-snap-align: start;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem 0.625rem;
    border-radius: 0.5rem;
    background-color: #f8fafc;
}

.benefit-icon {
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    flex-shrink: 0;
}

.benefit-title {
    font-size: var(--font-xs);
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-text);
    line-height: 1.2;
}

.benefit-subtitle {
    font-size: var(--font-xs);
    color: var(--color-text-muted);
    line-height: 1.2;
}

@media (min-width: 768px) {
    .benefits-grid {
        grid-template-columns: repeat(5, minmax(0, 1fr));
        overflow-x: visible;
        gap: 1.25rem;
    }
    .benefit-item {
        flex-direction: column;
        text-align: center;
        background-color: transparent;
        padding: 0.25rem;
    }
}

/* ==========================================================================
   2. REFATORAÇÃO DE GRID E FLEXBOX (VITRINE DE PRODUTOS)
   - Mobile (< 768px): Exatamente 2 colunas com gap sutil de 12px a 16px
   - Tablet (768px - 1023px): 3 colunas
   - Desktop (>= 1024px): Exatamente 4 colunas
   ========================================================================== */

.product-vitrine-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--grid-gap-vitrine); /* 12px (0.75rem) no mobile até 16px (1rem) */
    align-items: stretch;
}

@media (min-width: 768px) {
    .product-vitrine-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 1.125rem; /* 18px */
    }
}

@media (min-width: 1024px) {
    .product-vitrine-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 1.25rem; /* 20px */
    }
}

/* ==========================================================================
   3. FLUIDIZAÇÃO DOS CARDS DE PRODUTO & BOTÕES 100% MOBILE
   ========================================================================== */

.product-card {
    background-color: var(--color-surface);
    border-radius: var(--radius-card);
    border: 1px solid #f1f5f9;
    padding: var(--space-card);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-0.1875rem);
    box-shadow: 0 0.625rem 1.5rem -0.25rem rgba(15, 23, 42, 0.08);
}

.product-card-img-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: 0.5rem;
    aspect-ratio: 4 / 3;
    background-color: #f1f5f9;
    margin-bottom: clamp(0.5rem, 1.2vw, 0.75rem);
}

.product-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product-card:hover .product-card-img {
    transform: scale(1.04);
}

.product-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.badge-tag {
    font-size: clamp(0.625rem, 0.58rem + 0.2vw, 0.6875rem);
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.1875rem 0.375rem;
    border-radius: 0.25rem;
    line-height: 1.1;
    letter-spacing: 0.02em;
}

.product-card-title {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.35;
    margin-bottom: 0.375rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.7em;
}

.product-card-price-old {
    font-size: var(--font-xs);
    color: #94a3b8;
    text-decoration: line-through;
    min-height: 1.125rem;
}

.product-card-price-current {
    font-size: var(--font-price);
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.15;
    margin-block: 0.125rem;
}

.product-card-installments {
    font-size: var(--font-xs);
    color: var(--color-text-muted);
    line-height: 1.35;
    margin-bottom: 0.75rem;
}

/* Botão do Card: 100% da largura no mobile e área de toque mínima de 48px (3rem) */
.btn-card-action {
    width: 100%;
    min-height: var(--touch-target-min); /* 48px (Thumb Zone compliant) */
    padding: 0.625rem 0.75rem;
    font-size: var(--font-sm);
    font-weight: 700;
    border-radius: var(--radius-btn);
    background-color: var(--color-primary);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background-color 0.2s ease, transform 0.1s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-card-action:hover {
    background-color: var(--color-primary-hover);
}

.btn-card-action:active {
    transform: scale(0.98);
}

/* Todo botão interativo garante área mínima de toque no mobile */
.touch-target {
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   4. ZONA DO POLEGAR (THUMB ZONE) - STICKY CTA BAR NO RODAPÉ MOBILE
   ========================================================================== */

.sticky-cta-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 45;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    border-top: 1px solid #e2e8f0;
    box-shadow: 0 -0.25rem 1.25rem rgba(15, 23, 42, 0.1);
    padding: 0.625rem var(--space-container-x);
    padding-bottom: calc(0.625rem + env(safe-area-inset-bottom, 0px));
    transform: translateY(110%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.sticky-cta-bar.is-visible {
    transform: translateY(0);
}

.sticky-cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    max-width: 48rem;
    margin-inline: auto;
}

.sticky-cta-btn {
    min-height: var(--touch-target-min); /* >= 48px */
    min-width: 10.5rem;
    padding-inline: 1.25rem;
    background-color: var(--color-success);
    color: #ffffff;
    font-weight: 700;
    font-size: var(--font-base);
    border-radius: var(--radius-btn);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 0.25rem 0.75rem rgba(22, 163, 74, 0.3);
    transition: background-color 0.2s ease;
}

.sticky-cta-btn:hover {
    background-color: #15803d;
}

/* Oculta Sticky CTA em telas Desktop (>= 768px) conforme especificação Mobile Thumb Zone */
@media (min-width: 768px) {
    .sticky-cta-bar {
        display: none !important;
    }
}

/* Skeleton Loader para carregamento assíncrono rápido */
.skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.4s infinite;
    border-radius: 0.5rem;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}