/* ===================================
   Modern Design System 2025
   Clean, Minimal, Fast
   =================================== */

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

:root {
    /* Modern Color Palette */
    --primary: #2563EB;
    --primary-dark: #1E40AF;
    --primary-light: #3B82F6;

    --neutral-50: #FAFAFA;
    --neutral-100: #F5F5F5;
    --neutral-200: #E5E5E5;
    --neutral-300: #D4D4D4;
    --neutral-400: #A3A3A3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;

    --text-primary: #171717;
    --text-secondary: #525252;
    --text-light: #737373;

    --bg-primary: #FFFFFF;
    --bg-secondary: #FAFAFA;
    --bg-tertiary: #F5F5F5;

    --border-color: #E5E5E5;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --transition: all 0.2s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================================
   Header - Modern & Clean
   =================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-planet {
    width: 40px;
    height: 40px;
    transition: transform 0.3s ease;
}

.logo-planet:hover {
    transform: scale(1.05);
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav a:hover::after {
    width: 100%;
}

/* ===================================
   Hero Section - Modern & Spacious
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #FAFAFA 0%, #FFFFFF 100%);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-primary);
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
    font-weight: 400;
}

.cta-button {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 16px 32px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-secondary {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
    margin-left: 16px;
}

.cta-secondary:hover {
    background: var(--bg-secondary);
}

/* ===================================
   Sections - Clean Layout
   =================================== */

.section {
    padding: 100px 0;
}

.section:nth-child(even) {
    background: var(--bg-secondary);
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.section-intro {
    font-size: 18px;
    text-align: center;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 60px;
    line-height: 1.7;
}

/* ===================================
   Cards - Modern Design
   =================================== */

.steps-grid,
.benefits-grid,
.planos-grid,
.tech-grid,
.conteudo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.step-card,
.benefit-card,
.plano-card,
.tech-card,
.conteudo-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.step-card:hover,
.benefit-card:hover,
.plano-card:hover,
.tech-card:hover,
.conteudo-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.step-icon,
.benefit-icon,
.plano-icon {
    width: 48px;
    height: 48px;
    background: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
    font-size: 24px;
    font-weight: 700;
}

.tech-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: block;
    text-align: center;
}

.tech-card {
    text-align: center;
}

.conteudo-icon {
    font-size: 56px;
    margin-bottom: 20px;
    display: block;
    text-align: center;
}

.conteudo-card {
    text-align: center;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 15px;
}

/* ===================================
   Pricing Cards
   =================================== */

.planos-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    max-width: 1000px;
    margin: 60px auto 0;
}

.plano-card {
    position: relative;
    text-align: center;
}

.plano-destaque {
    border-color: var(--primary);
    border-width: 2px;
    transform: scale(1.05);
}

.badge-destaque {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.plano-nome {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.plano-preco {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
}

.plano-periodo {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 24px;
}

.plano-features {
    list-style: none;
    margin-bottom: 32px;
    text-align: left;
}

.plano-features li {
    padding: 12px 0;
    color: var(--text-secondary);
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.plano-features li::before {
    content: '✓';
    color: var(--primary);
    font-weight: 700;
    font-size: 18px;
}

/* ===================================
   Experience Section
   =================================== */

.experiencia-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.experiencia-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

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

.experiencia-icon {
    font-size: 56px;
    margin-bottom: 20px;
    display: block;
}

/* Garantia Section - Two Column Layout */
.experiencia-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.experiencia-texto h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.experiencia-texto p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.experiencia-visual {
    background: var(--primary);
    border-radius: var(--radius-xl);
    padding: 60px;
    text-align: center;
}

.experiencia-visual h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 12px;
    color: white;
}

.experiencia-visual p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 18px;
}

.experiencia-list {
    list-style: none;
    margin-top: 20px;
    margin-bottom: 24px;
}

.experiencia-list li {
    padding: 12px 0;
    color: var(--text-secondary);
    font-size: 15px;
    position: relative;
    padding-left: 28px;
}

.experiencia-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
    font-size: 18px;
}

/* ===================================
   Testimonials
   =================================== */

.avaliacoes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.avaliacao-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.avaliacao-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.avaliacao-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 18px;
}

.avaliacao-nome {
    font-weight: 600;
    color: var(--text-primary);
}

.avaliacao-data {
    color: var(--text-light);
    font-size: 14px;
}

.avaliacao-estrelas {
    color: #FBBF24;
    margin-bottom: 12px;
}

.avaliacao-texto {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 15px;
}

/* ===================================
   FAQ Section
   =================================== */

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 24px;
    background: none;
    border: none;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--primary);
    color: white;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer-content {
    padding: 0 24px 24px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===================================
   Devices Grid (Compatibilidade)
   =================================== */

.devices-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.device-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
}

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

.device-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.cta-center {
    text-align: center;
    margin-top: 48px;
}

/* ===================================
   CTA Final Section
   =================================== */

.cta-final {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 80px 0;
}

.cta-final-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-final-content h2 {
    font-size: 42px;
    font-weight: 800;
    color: white;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.cta-final-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
    line-height: 1.7;
}

.cta-button.large {
    font-size: 18px;
    padding: 18px 40px;
    background: white;
    color: var(--primary);
}

.cta-button.large:hover {
    background: var(--bg-secondary);
    transform: translateY(-3px);
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--neutral-900);
    color: var(--neutral-300);
    padding: 80px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 50px;
}

.footer-brand {
    max-width: 350px;
}

.footer-brand .logo-container {
    display: inline-flex;
    margin-bottom: 16px;
}

.footer-brand h3 {
    color: white;
    font-size: 20px;
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--neutral-400);
    line-height: 1.7;
    font-size: 15px;
}

.footer-section h4 {
    color: white;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--neutral-400);
    text-decoration: none;
    font-size: 15px;
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--primary-light);
    transform: translateX(4px);
}

.footer-bottom {
    border-top: 1px solid var(--neutral-800);
    padding-top: 30px;
    text-align: center;
    color: var(--neutral-500);
    font-size: 14px;
    line-height: 1.6;
}

/* ===================================
   Utility Classes
   =================================== */

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

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 56px;
    }

    .section-title {
        font-size: 40px;
    }

    .experiencia-content {
        gap: 40px;
    }

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .header {
        padding: 12px 0;
    }

    .nav {
        display: none;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .cta-secondary {
        margin-left: 0;
        margin-top: 12px;
        display: block;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 32px;
    }

    .section-intro {
        font-size: 16px;
    }

    .steps-grid,
    .benefits-grid,
    .planos-grid,
    .tech-grid,
    .conteudo-grid,
    .avaliacoes-grid,
    .experiencia-grid,
    .devices-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .experiencia-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .experiencia-visual {
        padding: 40px;
    }

    .plano-destaque {
        transform: scale(1);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

    .section-title {
        font-size: 28px;
    }

    .plano-preco {
        font-size: 40px;
    }
}

/* ===================================
   Scroll Animations (Subtle)
   =================================== */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}