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

:root {
    --primary-teal: #10B981;
    --primary-teal-light: #1ABC9C;
    --primary-teal-dark: #059669;
    --primary-teal-lighter: #2ECC71;
    --hero-gradient-start: #4A5568;
    --hero-gradient-end: #6B46C1;
    --text-dark: #2D3748;
    --text-gray: #4A5568;
    --text-light: #E2E8F0;
    --bg-light: #F7FAFC;
    --bg-white: #FFFFFF;
    --bg-dark: #1A202C;
    --border-color: #E5E7EB;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-dark);
    background: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo i {
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-teal-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo span {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-teal-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.desktop-nav {
    display: flex;
    gap: 2rem;
}

.desktop-nav a {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

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

.btn-whatsapp-sm {
    background: var(--primary-teal);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.btn-whatsapp-sm:hover {
    background: var(--primary-teal-light);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #4A5568 0%, #6B46C1 100%);
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-left {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(16, 185, 129, 0.2);
    color: var(--primary-teal);
    padding: 0.6rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    width: fit-content;
}

.hero-badge i {
    color: var(--primary-teal);
    font-size: 1rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(135deg, #FFFFFF, #E2E8F0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-light);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--primary-teal);
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
    background: var(--primary-teal-dark);
}

.btn-secondary {
    background: transparent;
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    border: 2px solid var(--primary-teal);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.btn-secondary:hover {
    border-color: var(--primary-teal-dark);
    color: white;
    background: var(--primary-teal);
}

.trust-badges {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: white;
}

.badge i {
    color: var(--primary-teal);
    font-size: 1.2rem;
}

/* Phone Mockup */
.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 320px;
    height: 640px;
    perspective: 1000px;
}

.phone-frame {
    width: 100%;
    height: 100%;
    background: #1A1A2E;
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
    position: relative;
}

.phone-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: #1A1A2E;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #E8E8E8;
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.chat-header {
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-teal-light));
    padding: 2.5rem 1rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-avatar i {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-teal-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.chat-info {
    color: white;
}

.chat-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.chat-status {
    font-size: 0.75rem;
    opacity: 0.9;
}

.chat-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.message {
    display: flex;
    max-width: 85%;
}

.message.bot {
    align-self: flex-start;
}

.message.user {
    align-self: flex-end;
}

.msg-bubble {
    padding: 0.75rem 1rem;
    border-radius: 16px;
    font-size: 0.875rem;
    line-height: 1.4;
}

.message.bot .msg-bubble {
    background: white;
    color: var(--text-dark);
    border-bottom-left-radius: 4px;
}

.message.user .msg-bubble {
    background: #DCF8C6;
    color: var(--text-dark);
    border-bottom-right-radius: 4px;
}

/* Features Section */
.features {
    padding: 6rem 2rem;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-gray);
    font-size: 1.125rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid #F3E8FF;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.1);
    border-color: var(--primary-teal);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-icon.whatsapp {
    background: #DCFCE7;
    color: var(--primary-teal);
}

.feature-icon.ai {
    background: #E6FFFA;
    color: var(--primary-teal-lighter);
}

.feature-icon.compare {
    background: #E6FFFA;
    color: var(--primary-teal-light);
}

.feature-icon.chat {
    background: #E6FFFA;
    color: var(--primary-teal);
}

.feature-icon.price {
    background: #E6FFFA;
    color: var(--primary-teal-dark);
}

.feature-icon.fake {
    background: #DCFCE7;
    color: var(--primary-teal);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-gray);
    font-size: 0.9375rem;
}

/* How It Works */
.how-it-works {
    padding: 6rem 2rem;
    background: var(--bg-light);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.step-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    position: relative;
    border: 1px solid #F3E8FF;
}

.step-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-teal-light));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.step-icon i {
    font-size: 1.75rem;
    color: white;
}

.step-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 28px;
    height: 28px;
    background: #E6FFFA;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary-teal);
}

.step-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.step-card p {
    color: var(--text-gray);
    font-size: 0.9375rem;
}

/* Demo */
.demo {
    padding: 6rem 2rem;
    background: white;
}

.video-wrapper video {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
}

/* CTA */
.cta {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #FFF5F7, #E6FFFA);
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-teal), var(--primary-teal-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-content p {
    color: var(--text-gray);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.btn-whatsapp-lg {
    background: var(--primary-teal);
    color: white;
    padding: 1.25rem 3rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.125rem;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-whatsapp-lg:hover {
    background: var(--primary-teal-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.cta-features span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-gray);
}

.cta-features i {
    color: var(--primary-teal);
}

/* Footer */
footer {
    background: var(--bg-dark);
    color: white;
    padding: 4rem 2rem 2rem;
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
}

.footer-links {
    display: flex;
    gap: 3rem;
}

.link-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.link-column a {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    transition: color 0.3s;
}

.link-column a:hover {
    color: var(--primary-teal);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.footer-bottom p a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.3s;
}

.footer-bottom p a:hover {
    color: var(--primary-teal);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary-teal);
    transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-left {
        align-items: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .trust-badges {
        justify-content: center;
    }

    .phone-mockup {
        width: 280px;
        height: 560px;
    }

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

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .btn-whatsapp-sm {
        display: none;
    }

    .hero {
        padding: 3rem 1.5rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .phone-mockup {
        width: 260px;
        height: 520px;
    }

    .features, .how-it-works, .demo, .cta {
        padding: 4rem 1.5rem;
    }

    .features-grid, .steps-container {
        grid-template-columns: 1fr;
    }

    .cta-features {
        flex-direction: column;
        gap: 0.75rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}