:root {
    --accent: #10B981;
    --accent-dark: #059669;
    --ink: #0F172A;
    --muted: #64748B;
    --bg: #FFFFFF;
    --hero-bg: #F8FAFC;
    --dark-bg: #1E293B;
    --border: #E2E8F0;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--ink);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header */
header {
    background: white;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 800;
    color: var(--ink);
    text-decoration: none;
}

.logo-icon {
    background: var(--accent);
    color: white;
    padding: 8px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links a {
    text-decoration: none;
    color: var(--ink);
    font-weight: 600;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-dark);
}

.btn-outline {
    border: 2px solid var(--border);
    color: var(--ink);
}

.btn-outline:hover {
    background: var(--hero-bg);
}

/* Hero */
.hero {
    background: var(--hero-bg);
    padding: 80px 0;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 64px;
}

.hero-content {
    flex: 1;
}

.badge {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    display: inline-block;
    margin-bottom: 24px;
}

h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero p {
    font-size: 18px;
    color: var(--muted);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.hero-note {
    font-size: 13px;
    color: var(--muted);
}

.hero-image {
    flex: 0.8;
}

/* WhatsApp Mockup */
.mockup {
    background: #E5DDD5;
    border-radius: 32px;
    border: 8px solid white;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
    max-width: 380px;
}

.mockup-header {
    background: #075E54;
    color: white;
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.mockup-chat {
    padding: 16px;
    height: 380px;
}

.bubble {
    padding: 10px 16px;
    border-radius: 16px;
    margin-bottom: 12px;
    max-width: 80%;
    font-size: 14px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.bubble.user {
    background: #DCF8C6;
    margin-left: auto;
    border-bottom-right-radius: 0;
}

.bubble.bot {
    background: white;
    border-top-left-radius: 0;
}

/* Features */
.features {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 64px;
}

.section-title h2 {
    font-size: 36px;
    font-weight: 800;
}

.section-title p {
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px;
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.feature-icon {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    font-size: 24px;
}

/* Steps */
.steps {
    background: var(--dark-bg);
    color: white;
    padding: 80px 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step-card {
    background: rgba(255,255,255,0.05);
    padding: 32px;
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.1);
}

.step-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 16px;
}

/* Pricing */
.pricing {
    background: var(--hero-bg);
    padding: 80px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.pricing-card {
    background: white;
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--border);
}

.pricing-card.featured {
    background: var(--ink);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.2);
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.price {
    font-size: 40px;
    font-weight: 800;
}

.price span {
    font-size: 16px;
    color: var(--muted);
}

.pricing-card.featured .price span {
    color: rgba(255,255,255,0.7);
}

.pricing-features {
    list-style: none;
    margin: 32px 0;
}

.pricing-features li {
    margin-bottom: 16px;
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Responsive */
@media (max-width: 992px) {
    .hero .container, .features-grid, .steps-grid, .pricing-grid {
        flex-direction: column;
        grid-template-columns: 1fr;
    }
    h1 { font-size: 36px; }
    .hero-image { display: none; }
}

footer {
    padding: 48px 0;
    border-top: 1px solid var(--border);
}

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

.download-badges {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background: black;
    color: white;
    padding: 10px 20px;
    border-radius: 10px;
    text-decoration: none;
    font-size: 14px;
}