:root {
    --primary-color: #2872FA;
    --primary-hover: #1e5cd4;
    --whatsapp-color: #25D366;
    --whatsapp-hover: #1ebd5a;
    --text-primary: #3A4F66;
    --text-secondary: #6C737D;
    --bg-color: #FFFFFF;
    --bg-light: #F8F9FA;
    --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --border-radius: 8px;
    --button-radius: 27px;
    --transition: all 0.3s ease;
}

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

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

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

p {
    margin-bottom: 1rem;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    font-size: 16px;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: var(--button-radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #FFF;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    color: #FFF;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(40, 114, 250, 0.3);
}

.btn-whatsapp {
    background-color: var(--whatsapp-color);
    color: #FFF;
}

.btn-whatsapp:hover {
    background-color: var(--whatsapp-hover);
    color: #FFF;
}

/* Header */
.site-header {
    background-color: var(--bg-color);
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.site-name {
    font-size: 28px;
    font-weight: 900;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

.text-white {
    color: #FFF !important;
}

/* Section Title */
.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.section-title p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
}

/* Hero Section */
.hero {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: 900;
    color: var(--text-primary);
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
}

.hero-image {
    flex: 1;
    text-align: right;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 30px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid #eee;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.feature-icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* How It Works Section */
.how-it-works {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step-card {
    padding: 30px;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.step-number {
    font-size: 80px;
    font-weight: 900;
    color: var(--primary-color);
    opacity: 0.1;
    position: absolute;
    top: -10px;
    right: 10px;
    line-height: 1;
}

.step-content h4 {
    position: relative;
    z-index: 1;
}

/* CTA WhatsApp Section */
.cta-whatsapp-section {
    padding: 60px 0;
    background: var(--primary-color);
    color: #FFF;
}

.cta-whatsapp-section h2 {
    color: #FFF;
}

.cta-whatsapp-section .btn-primary {
    background: var(--whatsapp-color);
    color: #FFF;
}

.cta-whatsapp-section .btn-primary:hover {
    background: var(--whatsapp-hover);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
}

/* Authority Section */
.authority {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.authority-content {
    max-width: 800px;
    margin: 0 auto;
}

.progress-container {
    margin-bottom: 40px;
}

.progress-bar-wrap {
    margin-bottom: 20px;
}

.progress-title {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.progress-bg {
    background: #e9ecef;
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 6px;
    transition: width 1s ease-in-out;
}

/* Plans Section */
.plans {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    align-items: center;
}

.plan-card {
    background: var(--bg-color);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    border: 1px solid #eee;
    transition: var(--transition);
}

.plan-card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transform: translateY(-5px);
}

.plan-card.recommended {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(40, 114, 250, 0.15);
}

.plan-card.recommended:hover {
    transform: scale(1.05) translateY(-5px);
}

.plan-card h3 {
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.devices {
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.plan-features {
    list-style: none;
    margin-bottom: 30px;
    text-align: left;
}

.plan-features li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    font-size: 15px;
}

.plan-features li:last-child {
    border-bottom: none;
}

/* Testimonials */
.testimonials {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.testimonial-content {
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-meta {
    display: flex;
    flex-direction: column;
}

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

.testimonial-job {
    font-size: 14px;
    color: var(--text-secondary);
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto 40px;
}

.faq-item {
    background: var(--bg-color);
    border-radius: var(--border-radius);
    margin-bottom: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
    overflow: hidden;
}

.faq-item summary {
    padding: 20px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
    list-style: none; /* Hide default arrow */
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary i {
    transition: var(--transition);
}

.faq-item[open] summary i {
    transform: rotate(180deg);
}

.faq-content {
    padding: 0 20px 20px;
}

/* Floating WhatsApp */
.floating-whatsapp {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--whatsapp-color);
    color: #FFF;
    padding: 12px 25px;
    border-radius: 50px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    z-index: 999;
}

.floating-whatsapp:hover {
    background: var(--whatsapp-hover);
    color: #FFF;
    transform: translateY(-2px);
}

/* Footer Logo */
.footer-logo {
    max-width: 250px;
    opacity: 0.8;
}

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

.main-nav {
    display: flex;
}

.nav-list {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav-list a {
    color: var(--text-primary);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 14px;
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
}

/* Single Page Styles */
.single-page {
    padding: 60px 0 80px;
}

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

.page-header h1 {
    font-size: 40px;
}

.page-header .subtitle {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
}

.featured-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    border-radius: var(--border-radius);
    display: block;
    margin: 0 auto 40px;
}

.page-content {
    max-width: 900px;
    margin: 0 auto;
}

.page-content h2 {
    margin-top: 40px;
    color: var(--primary-color);
}

.highlight-box {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    margin: 30px 0;
}

.benefits-list, .comparison-list {
    list-style: none;
}

.benefits-list li, .comparison-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.benefits-list li:last-child, .comparison-list li:last-child {
    border-bottom: none;
}

.benefits-list i {
    color: var(--primary-color);
    width: 25px;
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-color);
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        padding: 20px 0;
    }

    .main-nav.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .plan-card.recommended {
        transform: none;
    }

    .plan-card.recommended:hover {
        transform: translateY(-5px);
    }
}