:root {
    --primary-color: #FFC700;
    --primary-dark: #E0B200;
    --ink: #14161A;
    --text-color: #333;
    --muted: #6B7280;
    --line: #ECECEC;
    --light-bg: #f8f8f8;
    --radius-lg: 18px;
    --radius-md: 12px;
    --shadow-sm: 0 2px 10px rgba(20, 22, 26, 0.06);
    --shadow-md: 0 10px 30px rgba(20, 22, 26, 0.10);
    --font-display: 'Sora', Arial, sans-serif;
    --font-body: 'Inter', Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

h1, h2, h3 { font-family: var(--font-display); color: var(--ink); }

/* =====================================================
   NAVBAR
===================================================== */
.site-header { position: sticky; top: 0; z-index: 1000; background-color: #fff; }

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img { height: 40px; width: auto; display: block; }

.nav-center { list-style: none; display: flex; gap: 32px; }

.nav-center a { text-decoration: none; font-weight: 600; color: #333; position: relative; }

.nav-center a::after {
    content: ''; width: 0; height: 2px;
    background-color: var(--primary-color);
    position: absolute; bottom: -6px; left: 0;
    transition: width 0.3s ease;
}

.nav-center a:hover::after,
.nav-center a.is-active::after { width: 100%; }

.btn-anuncie {
    padding: 5px 22px;
    background-color: #000;
    color: #fff;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-anuncie:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245, 196, 0, 0.4);
}

.menu-toggle { display: none; margin-left: 14px; font-size: 22px; background: none; border: none; cursor: pointer; }

.mobile-menu {
    position: fixed; top: 0; right: -100%;
    width: 280px; height: 100vh;
    background-color: #fff;
    z-index: 2000; padding: 30px;
    transition: right 0.3s ease;
}

.mobile-menu.open { right: 0; }
.mobile-menu ul { list-style: none; margin-top: 40px; }
.mobile-menu li { margin-bottom: 20px; }
.mobile-menu a { text-decoration: none; font-size: 18px; font-weight: 600; color: #111; }
.mobile-anuncie { display: inline-block; margin-top: 10px; padding: 12px 20px; background-color: #000; color: #fff; border-radius: 30px; }
.close-menu { background: none; border: none; font-size: 22px; cursor: pointer; }

.overlay {
    position: fixed; inset: 0;
    background-color: rgba(0,0,0,0.4);
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s ease;
}
.overlay.show { opacity: 1; pointer-events: all; }

/* =====================================================
   HERO DA CATEGORIA (gradiente dinâmico)
===================================================== */
.category-hero {
    padding: 56px 20px 40px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.category-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 90% 10%, rgba(255,255,255,0.25), transparent 45%);
    pointer-events: none;
}

.category-hero-inner {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 26px;
}

.breadcrumb a { color: rgba(255,255,255,0.85); text-decoration: none; }
.breadcrumb a:hover { color: #fff; }

.category-icon {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: rgba(255,255,255,0.18);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 18px;
    font-size: 24px;
}

.category-hero h1 {
    font-size: clamp(2rem, 4.5vw, 2.8rem);
    font-weight: 800;
    color: #fff;
    margin-bottom: 10px;
}

.category-hero > .category-hero-inner > p {
    color: rgba(255,255,255,0.9);
    margin-bottom: 30px;
    font-size: 1rem;
}

/* Busca */
.category-search {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    border-radius: 40px;
    padding: 8px 8px 8px 20px;
    box-shadow: 0 14px 34px rgba(0,0,0,0.18);
    max-width: 480px;
    margin: 0 auto;
}

.category-search i.fa-search { color: var(--muted); font-size: 14px; }

.category-search input[type="text"] {
    flex: 1;
    border: none;
    outline: none;
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--ink);
    padding: 8px 0;
}

.category-search button {
    background: var(--ink);
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 13px;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
    white-space: nowrap;
}

.category-search button:hover { transform: translateY(-1px); background: #000; }

/* Chips de troca rápida de categoria */
.category-switch {
    max-width: 1000px;
    margin: 40px auto 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    position: relative;
    z-index: 2;
}

.switch-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: 30px;
    background: rgba(255,255,255,0.16);
    border: 1px solid rgba(255,255,255,0.35);
    color: #fff;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.25s ease;
}

.switch-chip:hover { background: rgba(255,255,255,0.28); }

.switch-chip.active {
    background: #fff;
    color: var(--ink);
    border-color: #fff;
}

/* =====================================================
   GRID DE MATÉRIAS
===================================================== */
.explorar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 50px 20px 30px;
}

.explorar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}

.explorar-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.explorar-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.explorar-card-media {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.explorar-card-media img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.explorar-card:hover .explorar-card-media img { transform: scale(1.06); }

.category-pill {
    position: absolute;
    top: 12px; left: 12px;
    color: #fff;
    padding: 5px 12px;
    font-size: 10.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-radius: 30px;
}

.explorar-card-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.explorar-card-body h3 {
    font-size: 16px;
    line-height: 1.35;
    font-weight: 700;
}

.explorar-card-body p {
    font-size: 13.5px;
    color: var(--muted);
    line-height: 1.5;
}

.explorar-card-meta {
    display: flex;
    gap: 14px;
    font-size: 12px;
    color: var(--muted);
    margin-top: auto;
    padding-top: 6px;
}

/* =====================================================
   PAGINAÇÃO
===================================================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 50px;
    flex-wrap: wrap;
}

.page-btn {
    min-width: 38px;
    height: 38px;
    padding: 0 8px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--ink);
    font-weight: 700;
    font-size: 13.5px;
    background: var(--light-bg);
    transition: all 0.2s ease;
}

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

.page-btn.active {
    background: var(--ink);
    color: #fff;
}

.page-btn.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.page-dots {
    color: var(--muted);
    padding: 0 4px;
    font-weight: 700;
}

/* =====================================================
   ESTADO VAZIO
===================================================== */
.empty-state {
    text-align: center;
    padding: 90px 20px;
    max-width: 480px;
    margin: 0 auto;
}

.empty-state i {
    font-size: 40px;
    color: var(--line);
    margin-bottom: 20px;
}

.empty-state h3 { font-size: 20px; margin-bottom: 10px; }

.empty-state p { color: var(--muted); margin-bottom: 26px; line-height: 1.6; }

.btn-back {
    display: inline-block;
    padding: 12px 28px;
    background: var(--primary-color);
    color: #000;
    font-weight: 700;
    border-radius: 30px;
    text-decoration: none;
    transition: background 0.3s ease;
}

.btn-back:hover { background: var(--primary-dark); }

/* =====================================================
   FOOTER
===================================================== */
.footer-serrana { background-color: #ffffff; border-top: 1px solid #eee; padding: 40px 20px 24px; margin-top: 40px; }

.footer-container { max-width: 1200px; margin: 0 auto; text-align: center; }

.footer-logo img { max-width: 160px; margin-bottom: 24px; }

.footer-links { display: flex; justify-content: center; gap: 24px; flex-wrap: wrap; margin-bottom: 20px; }

.footer-links a { font-size: 14px; color: #666; text-decoration: none; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--primary-dark); }

.footer-copy p { font-size: 13px; color: #888; margin: 4px 0; }

.footer-dev a { color: #666; text-decoration: none; font-weight: 500; }
.footer-dev a:hover { color: var(--primary-dark); }

#backToTop {
    position: fixed; bottom: 20px; right: 20px;
    width: 40px; height: 40px; border-radius: 50%;
    border: none; background-color: var(--primary-color);
    color: #000; font-size: 13px; font-weight: bold;
    cursor: pointer; display: none;
    align-items: center; justify-content: center;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 999;
}

#backToTop:hover { transform: translateY(-4px); }

/* =====================================================
   RESPONSIVIDADE
===================================================== */
@media (max-width: 768px) {
    .nav-center { display: none; }
    .menu-toggle { display: block; }
    .btn-anuncie { display: none; }

    .category-hero { padding: 44px 16px 34px; }
    .category-search { flex-wrap: nowrap; padding: 6px 6px 6px 16px; }
    .category-search button { padding: 10px 16px; }
}

@media (max-width: 600px) {
    .logo img { height: 34px; }
    .explorar-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
    .explorar-card-body { padding: 12px; }
    .explorar-card-body h3 { font-size: 13.5px; }
    .explorar-card-body p { display: none; }
    .switch-chip span { display: none; }
}