/* ===== Variáveis de Design (Raiz) ===== */
    :root {
      --font-sans: 'Inter', sans-serif;

      /* Paleta de Azul Suave */
      --brand-lightest: #F0F9FF;
      --brand-light: #E0F2FE;
      --brand-base: #3B82F6;
      --brand-dark: #2563EB;
      --brand-darkest: #1E3A8A;

      /* Cores de Texto e Fundo */
      --text-primary: #1F2937;
      /* Cinza 800 */
      --text-secondary: #4B5563;
      /* Cinza 600 */
      --text-light: #9CA3AF;
      /* Cinza 400 */
      --bg-white: #FFFFFF;
      --bg-dark-footer: #111827;
      /* Cinza 900 */
      --border-color: #E5E7EB;
      /* Cinza 200 */

      /* Sombras (para um visual elevado) */
      --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
      --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
      --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
      --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
      --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

      /* Cantos Arredondados */
      --radius-md: 0.5rem;
      /* 8px */
      --radius-lg: 0.75rem;
      /* 12px */
      --radius-xl: 1rem;
      /* 16px */
      --radius-2xl: 1.5rem;
      /* 24px */

      /* Transições */
      --transition-fast: all 0.2s ease-in-out;
      --transition-smooth: all 0.3s ease-in-out;
    }

    /* ===== Reset e Base ===== */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      color: var(--text-primary);
      background-color: var(--bg-white);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

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

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
      font-weight: 800;
      line-height: 1.2;
      color: var(--text-primary);
    }

    h1 {
      font-size: 3rem;
    }

    /* 48px */
    h2 {
      font-size: 2.25rem;
    }

    /* 36px */
    h3 {
      font-size: 1.5rem;
    }

    /* 24px */

    p {
      color: var(--text-secondary);
      margin-bottom: 1.25rem;
    }

    /* ===== Classes Utilitárias ===== */
    .container {
      max-width: 1152px;
      /* Equivalente a max-w-6xl */
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    .btn {
      display: inline-block;
      padding: 0.875rem 2rem;
      /* 14px 32px */
      border-radius: var(--radius-lg);
      font-weight: 600;
      text-align: center;
      cursor: pointer;
      transition: var(--transition-smooth);
      border: none;
      box-shadow: var(--shadow-md);
    }

    .btn-primary {
      background-color: var(--brand-dark);
      color: var(--bg-white);
    }

    .btn-primary:hover {
      background-color: var(--brand-darkest);
      transform: translateY(-3px) scale(1.02);
      box-shadow: var(--shadow-lg);
    }

    .btn-light {
      background-color: var(--bg-white);
      color: var(--brand-dark);
    }

    .btn-light:hover {
      background-color: var(--brand-lightest);
      transform: translateY(-3px) scale(1.02);
      box-shadow: var(--shadow-lg);
    }

    section {
      padding: 6rem 0;
    }

    /* Centralizador de Títulos de Seção */
    .section-header {
      text-align: center;
      max-width: 768px;
      /* max-w-3xl */
      margin: 0 auto 4rem auto;
    }

    .section-header h2 {
      margin-bottom: 1rem;
    }

    .section-header p {
      font-size: 1.125rem;
      /* 18px */
    }

    /* ===== Header / Navbar ===== */
    .main-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      box-shadow: var(--shadow-sm);
    }

    .main-nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 5rem;
      /* 80px */
    }

    .logo {
      font-size: 2.25rem;
      /* 36px */
      font-weight: 900;
      color: var(--brand-dark);
    }

    .nav-menu {
      display: none;
      /* Oculto por padrão, visível no desktop */
      list-style: none;
      gap: 2.5rem;
    }

    .nav-menu a {
      font-weight: 500;
      color: var(--text-secondary);
      transition: var(--transition-fast);
    }

    .nav-menu a:hover {
      color: var(--brand-base);
    }

    .nav-buttons {
      display: none;
      /* Oculto por padrão, visível no desktop */
      gap: 1rem;
      align-items: center;
    }

    .nav-buttons .btn-login {
      font-weight: 500;
      color: var(--text-secondary);
      transition: var(--transition-fast);
      padding: 0.5rem 0.75rem;
    }

    .nav-buttons .btn-login:hover {
      color: var(--brand-base);
    }

    .nav-buttons .btn-signup {
      padding: 0.625rem 1.25rem;
      /* 10px 20px */
      background-color: var(--brand-dark);
      color: var(--bg-white);
      border-radius: var(--radius-lg);
      font-weight: 500;
      box-shadow: var(--shadow-md);
      transition: var(--transition-smooth);
    }

    .nav-buttons .btn-signup:hover {
      background-color: var(--brand-darkest);
      box-shadow: var(--shadow-lg);
    }

    /* Menu Mobile */
    .mobile-menu-toggle {
      display: block;
      /* Visível no mobile */
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
    }

    .mobile-menu-toggle .icon-bar {
      display: block;
      width: 28px;
      height: 3px;
      background-color: var(--text-primary);
      border-radius: 3px;
      transition: var(--transition-smooth);
    }

    .mobile-menu-toggle .icon-bar:nth-child(2) {
      margin: 6px 0;
    }

    /* Animação do Hamburger */
    .mobile-menu-toggle.active .icon-bar:nth-child(1) {
      transform: translateY(9px) rotate(45deg);
    }

    .mobile-menu-toggle.active .icon-bar:nth-child(2) {
      opacity: 0;
    }

    .mobile-menu-toggle.active .icon-bar:nth-child(3) {
      transform: translateY(-9px) rotate(-45deg);
    }

    .mobile-menu {
      display: block;
      position: absolute;
      top: 5rem;
      /* 80px */
      left: 0;
      right: 0;
      background: var(--bg-white);
      box-shadow: var(--shadow-lg);
      padding: 1.5rem;

      /* Animação de Slide-down */
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      visibility: hidden;
      transition: all 0.4s ease-out;
    }

    .mobile-menu.active {
      max-height: 500px;
      /* Altura suficiente */
      opacity: 1;
      visibility: visible;
    }

    .mobile-menu a {
      display: block;
      padding: 1rem 0.5rem;
      font-weight: 500;
      color: var(--text-primary);
      border-radius: var(--radius-md);
    }

    .mobile-menu a:hover {
      background-color: var(--brand-lightest);
    }

    .mobile-menu .btn-signup {
      display: block;
      width: 100%;
      text-align: center;
      margin-top: 1rem;
    }

    /* ===== Seção Hero ===== */
    #hero {
      padding-top: 12rem;
      /* 144px + 80px header */
      padding-bottom: 6rem;
      /* Um gradiente mais suave */
      background: linear-gradient(180deg, var(--brand-light) 0%, var(--bg-white) 100%);
    }

    .hero-container {
      display: grid;
      grid-template-columns: 1fr;
      gap: 4rem;
      align-items: center;
    }

    .hero-text {
      text-align: center;
    }

    .hero-text h1 {
      font-size: 3.25rem;
      /* 52px */
      line-height: 1.15;
      margin-bottom: 1.5rem;
    }

    .hero-text h1 span {
      /* Destaque com gradiente */
      background: linear-gradient(90deg, var(--brand-base), var(--brand-darkest));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-text .subtitle {
      font-size: 1.25rem;
      /* 20px */
      max-width: 600px;
      margin: 0 auto 2.5rem auto;
    }

    .hero-text .btn-primary {
      padding: 1rem 2.5rem;
      /* 16px 40px */
      font-size: 1.125rem;
      /* 18px */
    }

    .hero-text .cta-note {
      font-size: 0.875rem;
      /* 14px */
      color: var(--text-secondary);
      margin-top: 1rem;
    }

    /* Mockup Visual */
    .hero-visual {
      background-color: var(--bg-white);
      padding: 1.5rem;
      border-radius: var(--radius-2xl);
      box-shadow: var(--shadow-2xl);
      border: 1px solid var(--border-color);
      transition: var(--transition-smooth);
    }

    .hero-visual:hover {
      transform: translateY(-10px) rotate(1deg);
      box-shadow: 0 30px 60px -15px rgba(37, 99, 235, 0.2);
    }

    .mockup-header {
      display: flex;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 0.75rem;
      margin-bottom: 1.25rem;
    }

    .mockup-header .dots {
      display: flex;
      gap: 0.5rem;
    }

    .mockup-header .dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
    }

    .mockup-header .dot-red {
      background-color: #F87171;
    }

    .mockup-header .dot-yellow {
      background-color: #FBBF24;
    }

    .mockup-header .dot-green {
      background-color: #34D399;
    }

    .mockup-header .mockup-title {
      font-size: 0.875rem;
      color: var(--text-secondary);
      font-weight: 500;
      margin-left: auto;
    }

    .mockup-content .form-group {
      margin-bottom: 1.25rem;
    }

    .mockup-content label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 0.5rem;
    }

    .mockup-content input[type="text"] {
      width: 100%;
      background-color: #F3F4F6;
      /* Cinza 100 */
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 0.75rem 1rem;
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--text-primary);
    }

    .mockup-buttons-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0.5rem;
    }

    .mockup-buttons-grid button {
      padding: 0.5rem 0.75rem;
      font-size: 0.875rem;
      font-weight: 500;
      border: none;
      border-radius: var(--radius-lg);
      cursor: default;
      transition: var(--transition-fast);
    }

    .mockup-buttons-grid .btn-mockup-off {
      background-color: #F3F4F6;
      color: var(--text-secondary);
    }

    .mockup-buttons-grid .btn-mockup-on {
      background-color: var(--brand-base);
      color: var(--bg-white);
      box-shadow: var(--shadow-md);
    }

    .mockup-content input[type="range"] {
      width: 100%;
      height: 8px;
      -webkit-appearance: none;
      appearance: none;
      background: #E5E7EB;
      /* Cinza 200 */
      border-radius: 5px;
      outline: none;
    }

    input[type="range"]::-webkit-slider-thumb {
      -webkit-appearance: none;
      appearance: none;
      width: 20px;
      height: 20px;
      background: var(--brand-base);
      border-radius: 50%;
      cursor: pointer;
      margin-top: -6px;
      /* Centraliza o thumb */
      border: 3px solid var(--bg-white);
      box-shadow: var(--shadow-md);
    }

    input[type="range"]::-moz-range-thumb {
      width: 20px;
      height: 20px;
      background: var(--brand-base);
      border-radius: 50%;
      cursor: pointer;
      border: 3px solid var(--bg-white);
      box-shadow: var(--shadow-md);
    }

    .mockup-content .btn-mockup-generate {
      width: 100%;
      background-color: var(--brand-dark);
      color: var(--bg-white);
      padding: 0.875rem;
      border-radius: var(--radius-lg);
      font-weight: 600;
      margin-top: 1rem;
      border: none;
      box-shadow: var(--shadow-md);
    }

    /* ===== Seção Como Funciona ===== */
    #como-funciona {
      background-color: var(--bg-white);
    }

    .how-it-works-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .how-it-works-card {
      background-color: var(--brand-lightest);
      padding: 2.5rem 2rem;
      border-radius: var(--radius-xl);
      text-align: center;
      border: 1px solid var(--brand-light);
      box-shadow: var(--shadow-lg);
      transition: var(--transition-smooth);
    }

    .how-it-works-card:hover {
      transform: translateY(-10px);
      box-shadow: var(--shadow-xl);
    }

    .how-it-works-card .icon-wrapper {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 4.5rem;
      /* 72px */
      height: 4.5rem;
      background: linear-gradient(145deg, var(--brand-base), var(--brand-dark));
      color: var(--bg-white);
      border-radius: 50%;
      margin-bottom: 1.5rem;
      box-shadow: 0 10px 20px -5px rgba(59, 130, 246, 0.4);
    }

    .how-it-works-card .icon-wrapper svg {
      width: 2.5rem;
      /* 40px */
      height: 2.5rem;
    }

    .how-it-works-card h3 {
      margin-bottom: 0.75rem;
    }

    /* ===== Seção de Recursos ===== */
    #recursos {
      background-color: var(--brand-lightest);
    }

    .feature-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
      margin-bottom: 5rem;
    }

    .feature-item:last-child {
      margin-bottom: 0;
    }

    /* Alternar colunas */
    .feature-item:nth-child(even) .feature-image {
      order: -1;
    }

    .feature-text .tag {
      display: inline-block;
      padding: 0.25rem 0.75rem;
      background-color: var(--brand-light);
      color: var(--brand-dark);
      font-weight: 600;
      font-size: 0.875rem;
      border-radius: 999px;
      margin-bottom: 1rem;
    }

    .feature-text h3 {
      font-size: 1.875rem;
      /* 30px */
      margin-bottom: 1rem;
    }

    .feature-text p {
      font-size: 1.125rem;
      /* 18px */
      line-height: 1.7;
    }

    .feature-image {
      background-color: var(--bg-white);
      border-radius: var(--radius-2xl);
      box-shadow: var(--shadow-xl);
      padding: 2rem;
      border: 1px solid var(--border-color);
    }

    .feature-image img {
      border-radius: var(--radius-xl);
      width: 100%;
      height: 300px;
      object-fit: cover;
    }

    /* ===== Seção de Testemunhos ===== */
    #testemunhos {
      background-color: var(--bg-white);
    }

    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .testimonial-card {
      background-color: #F9FAFB;
      /* Cinza 50 */
      padding: 2rem;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-card p.quote {
      font-style: italic;
      font-size: 1.125rem;
      color: var(--text-primary);
      margin-bottom: 1.5rem;
      /* Adiciona aspas estilizadas */
      position: relative;
    }

    .testimonial-card p.quote::before {
      content: '“';
      position: absolute;
      top: -0.5rem;
      left: -1rem;
      font-size: 3rem;
      color: var(--brand-light);
      font-weight: 900;
      z-index: 1;
    }

    .testimonial-card .author {
      display: flex;
      align-items: center;
      margin-top: auto;
    }

    .testimonial-card .author-img {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      margin-right: 1rem;
      border: 3px solid var(--brand-light);
    }

    .author-info .name {
      font-weight: 700;
      color: var(--text-primary);
    }

    .author-info .title {
      font-size: 0.875rem;
      color: var(--brand-base);
      font-weight: 500;
    }

    /* ===== Seção CTA Final ===== */
    #cta {
      background-color: var(--brand-dark);
      /* Gradiente de fundo bonito */
      background: linear-gradient(135deg, var(--brand-dark), var(--brand-darkest));
      padding: 6rem 0;
      border-radius: 0;
      /* Será arredondado no container */
      color: var(--bg-white);
    }

    .cta-container {
      max-width: 800px;
      text-align: center;
    }

    .cta-container h2 {
      font-size: 2.5rem;
      /* 40px */
      color: var(--bg-white);
      margin-bottom: 1.5rem;
    }

    .cta-container p {
      font-size: 1.125rem;
      color: var(--brand-light);
      margin-bottom: 2.5rem;
    }

    .cta-container .btn-light {
      padding: 1rem 2.5rem;
      font-size: 1.125rem;
      font-weight: 700;
    }

    /* ===== Footer ===== */
    footer {
      background-color: var(--bg-dark-footer);
      color: var(--text-light);
      padding: 5rem 0 2rem 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 2rem;
    }

    .footer-col-1 {
      grid-column: span 2;
    }

    .footer-col-1 .logo {
      color: var(--bg-white);
      margin-bottom: 1rem;
      display: block;
    }

    .footer-col-1 p {
      color: var(--text-light);
      max-width: 320px;
      margin-bottom: 1.5rem;
    }

    .social-icons {
      display: flex;
      gap: 1.5rem;
    }

    .social-icons a {
      color: var(--text-light);
      transition: var(--transition-fast);
    }

    .social-icons a:hover {
      color: var(--bg-white);
    }

    .social-icons svg {
      width: 24px;
      height: 24px;
    }

    .footer-col h4 {
      font-size: 1.125rem;
      font-weight: 600;
      color: var(--bg-white);
      margin-bottom: 1.5rem;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .footer-links a {
      color: var(--text-light);
      transition: var(--transition-fast);
    }

    .footer-links a:hover {
      color: var(--bg-white);
    }

    .footer-bottom {
      border-top: 1px solid #374151;
      /* Cinza 700 */
      margin-top: 4rem;
      padding-top: 2rem;
      text-align: center;
      font-size: 0.875rem;
      color: var(--text-light);
    }


    /* ===== Responsividade ===== */

    /* Tablets (<= 1024px) */
    @media (max-width: 1024px) {
      h1 {
        font-size: 2.75rem;
      }

      h2 {
        font-size: 2rem;
      }

      .how-it-works-grid {
        grid-template-columns: 1fr;
      }

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

      .testimonial-card-wide {
        grid-column: span 2;
      }

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

      .footer-col-1 {
        grid-column: span 3;
      }
    }

    /* Mobile (<= 768px) */
    @media (max-width: 768px) {

      /* Mostrar menu mobile */
      .nav-menu,
      .nav-buttons {
        display: none;
      }

      .mobile-menu-toggle {
        display: block;
      }

      /* Ajustar fontes mobile */
      h1 {
        font-size: 2.25rem;
      }

      /* 36px */
      h2 {
        font-size: 1.875rem;
      }

      /* 30px */

      /* Ajustar espaçamento da seção */
      section {
        padding: 4rem 0;
      }

      #hero {
        padding-top: 9rem;
        padding-bottom: 4rem;
      }

      /* Coluna única para layouts */
      .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
      }

      .hero-text {
        text-align: center;
      }

      .hero-text .subtitle {
        margin: 0 auto 2rem auto;
      }

      .hero-visual:hover {
        transform: translateY(0) rotate(0);
      }

      .feature-item {
        grid-template-columns: 1fr;
        text-align: center;
      }

      .feature-item:nth-child(even) .feature-image {
        order: 1;
        /* Resetar ordem */
      }

      .testimonials-grid {
        grid-template-columns: 1fr;
      }

      .testimonial-card-wide {
        grid-column: span 1;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
      }

      .footer-col-1 {
        grid-column: span 2;
        text-align: center;
      }

      .footer-col-1 p {
        margin: 0 auto 1.5rem auto;
      }

      .social-icons {
        justify-content: center;
      }
    }