/* =========== 1. RESET E VARIÁVEIS =========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        :root {
            /* Paleta de cores - Tons de azul que transmitem confiança */
            --color-primary: #1E40AF;          /* Azul escuro principal */
            --color-primary-dark: #1E3A8A;     /* Azul ainda mais profundo */
            --color-primary-light: #3B82F6;    /* Azul vibrante para hover */
            --color-accent: #0EA5E9;           /* Azul céu para destaques */

            /* Neutros */
            --color-bg: #F8FAFC;               /* Fundo geral (cinza quase branco) */
            --color-surface: #FFFFFF;          /* Cards e superfícies */
            --color-border: #E2E8F0;           /* Bordas sutis */
            --color-border-strong: #CBD5E1;    /* Bordas mais visíveis */

            /* Tipografia */
            --color-text: #0F172A;             /* Texto principal */
            --color-text-muted: #475569;       /* Texto secundário */
            --color-text-light: #94A3B8;       /* Texto de apoio */

            /* Sombras (inspiradas em Material Design) */
            --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            --shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, 0.10), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --shadow-hover: 0 20px 40px -10px rgba(30, 64, 175, 0.25);

            /* Espaçamento e layout */
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --container-max: 1200px;
            --header-height: 64px;

            /* Transições */
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--color-primary-light);
        }

        img, svg {
            display: block;
            max-width: 100%;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* =========== 2. HEADER / CABEÇALHO =========== */
        .header {
            position: sticky;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background-color: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }

        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        /* Logo em texto */
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.375rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
        }

        .logo__icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            display: grid;
            place-items: center;
            font-size: 1.1rem;
            font-weight: 700;
        }

        /* Menu Hambúrguer - botão */
        .hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 10px;
            background: transparent;
            border: none;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }

        .hamburger:hover {
            background-color: var(--color-bg);
        }

        .hamburger__line {
            width: 100%;
            height: 2.5px;
            background-color: var(--color-text);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
            transform-origin: center;
        }

        /* Animação: vira um "X" quando ativo */
        .hamburger.is-active .hamburger__line:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.is-active .hamburger__line:nth-child(2) {
            opacity: 0;
        }
        .hamburger.is-active .hamburger__line:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* Menu Mobile - painel deslizante */
        .nav-menu {
            position: fixed;
            top: var(--header-height);
            right: 0;
            width: min(320px, 85vw);
            height: calc(100vh - var(--header-height));
            background-color: var(--color-surface);
            box-shadow: -8px 0 30px -10px rgba(15, 23, 42, 0.15);
            transform: translateX(100%);
            transition: transform var(--transition);
            padding: 24px;
            overflow-y: auto;
        }

        .nav-menu.is-open {
            transform: translateX(0);
        }

        .nav-menu__list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .nav-menu__link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            font-weight: 600;
            color: var(--color-text);
            border-radius: var(--radius-md);
            transition: background-color var(--transition), color var(--transition);
        }

        .nav-menu__link:hover {
            background-color: var(--color-bg);
            color: var(--color-primary);
        }

        .nav-menu__emoji {
            font-size: 1.25rem;
        }

        /* Overlay escuro atrás do menu */
        .overlay {
            position: fixed;
            inset: var(--header-height) 0 0 0;
            background-color: rgba(15, 23, 42, 0.4);
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition);
            z-index: 90;
            backdrop-filter: blur(2px);
        }

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

        /* =========== 3. HERO SECTION =========== */
        .hero {
            position: relative;
            padding: 56px 0 48px;
            text-align: center;
            background: linear-gradient(180deg, #FFFFFF 0%, #EFF6FF 100%);
        }

        /* Padrão decorativo sutil no fundo (pontilhado) */
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle, rgba(30, 64, 175, 0.08) 1px, transparent 1px);
            background-size: 24px 24px;
            opacity: 0.6;
            pointer-events: none;
        }

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

        .hero__badge {
            display: inline-block;
            padding: 6px 14px;
            background-color: rgba(30, 64, 175, 0.08);
            color: var(--color-primary);
            font-size: 0.8125rem;
            font-weight: 600;
            border-radius: 999px;
            margin-bottom: 20px;
        }

        .hero__title {
            font-size: clamp(1.75rem, 6vw, 3rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.025em;
            margin-bottom: 16px;
            color: var(--color-text);
        }

        .hero__title span {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero__subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }

        /* Barra de pesquisa grande e amigável */
        .search {
            max-width: 600px;
            margin: 0 auto;
            position: relative;
        }

        .search__form {
            display: flex;
            align-items: center;
            background-color: var(--color-surface);
            border: 2px solid var(--color-border);
            border-radius: 999px;
            padding: 6px 6px 6px 20px;
            box-shadow: var(--shadow-md);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search__form:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.12), var(--shadow-lg);
        }

        .search__icon {
            flex-shrink: 0;
            color: var(--color-text-light);
        }

        .search__input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            font-family: inherit;
            font-size: 1rem;
            padding: 14px 12px;
            color: var(--color-text);
            min-width: 0; /* evita overflow em flex */
        }

        .search__input::placeholder {
            color: var(--color-text-light);
        }

        .search__button {
            flex-shrink: 0;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 12px 20px;
            font-family: inherit;
            font-size: 0.9375rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .search__button:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }

        /* Esconde o texto do botão no mobile, mostra só ícone */
        .search__button-text {
            display: none;
        }

        /* =========== 4. SEÇÕES GENÉRICAS =========== */
        .section {
            padding: 56px 0;
        }

        .section__header {
            text-align: center;
            margin-bottom: 40px;
        }

        .section__kicker {
            display: inline-block;
            font-size: 0.8125rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .section__title {
            font-size: clamp(1.5rem, 4vw, 2.25rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .section__description {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        /* =========== 5. GRID DE CATEGORIAS =========== */
        .categories {
            background-color: var(--color-surface);
        }

        .categories__grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .category-card {
            display: flex;
            flex-direction: column;
            padding: 32px 28px;
            background-color: var(--color-surface);
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-lg);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            position: relative;
            overflow: hidden;
        }

        /* Linha colorida lateral decorativa */
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
            transform: scaleY(0);
            transform-origin: top;
            transition: transform var(--transition);
        }

        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-primary-light);
        }

        .category-card:hover::before {
            transform: scaleY(1);
        }

        .category-card__icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
            border-radius: var(--radius-md);
            display: grid;
            place-items: center;
        }

        .category-card__title {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .category-card__description {
            color: var(--color-text-muted);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .category-card__link {
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .category-card__link span {
            transition: transform var(--transition);
        }

        .category-card:hover .category-card__link span {
            transform: translateX(4px);
        }

        /* =========== 6. CALCULADORAS EM DESTAQUE =========== */
        .featured__grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .featured-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            background-color: var(--color-surface);
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }

        .featured-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary-light);
        }

        .featured-card__icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
            color: #fff;
            display: grid;
            place-items: center;
            font-size: 1.25rem;
        }

        .featured-card__content {
            flex: 1;
            min-width: 0;
        }

        .featured-card__title {
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .featured-card__subtitle {
            font-size: 0.875rem;
            color: var(--color-text-muted);
        }

        .featured-card__arrow {
            flex-shrink: 0;
            color: var(--color-text-light);
            transition: color var(--transition), transform var(--transition);
        }

        .featured-card:hover .featured-card__arrow {
            color: var(--color-primary);
            transform: translateX(4px);
        }

        /* =========== 7. FOOTER (RODAPÉ SEO) =========== */
        .footer {
            background-color: #0F172A;
            color: #CBD5E1;
            padding: 56px 0 24px;
            margin-top: 40px;
        }

        .footer__seo {
            max-width: 820px;
            margin: 0 auto 40px;
            text-align: center;
        }

        .footer__seo-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer__seo-text {
            font-size: 0.9375rem;
            line-height: 1.75;
            color: #CBD5E1;
            margin-bottom: 16px;
        }

        .footer__divider {
            height: 1px;
            background-color: rgba(203, 213, 225, 0.15);
            margin-bottom: 24px;
        }

        .footer__bottom {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            text-align: center;
        }

        .footer__copy {
            font-size: 0.875rem;
            color: #94A3B8;
        }

        .footer__links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            list-style: none;
        }

        .footer__link {
            font-size: 0.875rem;
            color: #CBD5E1;
            font-weight: 500;
        }

        .footer__link:hover {
            color: #FFFFFF;
        }

        /* =========== 8. UTILITÁRIOS =========== */
        .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;
        }

        /* ================================================= */
        /* 9. MEDIA QUERIES - ADAPTAÇÃO PARA TABLET/DESKTOP   */
        /* ================================================= */

        /* Tablet (≥ 640px) */
        @media (min-width: 640px) {
            .container {
                padding: 0 32px;
            }

            .hero {
                padding: 80px 0 64px;
            }

            .search__button {
                padding: 12px 24px;
            }

            .search__button-text {
                display: inline;
            }

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

        /* Desktop (≥ 900px) */
        @media (min-width: 900px) {
            .section {
                padding: 80px 0;
            }

            .hero {
                padding: 96px 0 80px;
            }

            .categories__grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 28px;
            }

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

            .footer__bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }

        /* Desktop grande (≥ 1024px): o menu hambúrguer poderia virar menu horizontal,
           mas conforme o escopo do brief mantemos o hambúrguer em todas as resoluções
           por consistência visual e foco no mobile. */

        /* =========== 10. ACESSIBILIDADE =========== */
        :focus-visible {
            outline: 3px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html { scroll-behavior: auto; }
        }

        /* =========== 11. SEARCH DROPDOWN =========== */
        .search-dropdown {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            right: 0;
            background-color: var(--color-surface);
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            z-index: 200;
            list-style: none;
            overflow: hidden;
            display: none;
            text-align: left;
        }

        .search-dropdown.is-visible {
            display: block;
        }

        .search-dropdown__item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 20px;
            min-height: 52px;
            color: var(--color-text);
            font-size: 0.9375rem;
            font-weight: 500;
            border-bottom: 1px solid var(--color-border);
            text-decoration: none;
            transition: background-color var(--transition), color var(--transition);
            -webkit-tap-highlight-color: transparent;
        }

        .search-dropdown li:last-child .search-dropdown__item {
            border-bottom: none;
        }

        .search-dropdown__item:hover,
        .search-dropdown__item.is-focused {
            background-color: #EFF6FF;
            color: var(--color-primary);
        }

        .search-dropdown__emoji {
            flex-shrink: 0;
            font-size: 1.25rem;
            width: 28px;
            text-align: center;
        }

        .search-dropdown__name {
            flex: 1;
            min-width: 0;
        }

        .search-dropdown__category {
            flex-shrink: 0;
            font-size: 0.6875rem;
            font-weight: 600;
            color: var(--color-text-light);
            background-color: var(--color-bg);
            padding: 3px 8px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        .search-dropdown__item:hover .search-dropdown__category,
        .search-dropdown__item.is-focused .search-dropdown__category {
            background-color: rgba(30, 64, 175, 0.1);
            color: var(--color-primary);
        }

        .search-dropdown__empty {
            padding: 18px 20px;
            color: var(--color-text-muted);
            font-size: 0.9375rem;
            text-align: center;
        }