/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #25d366;
    --primary-dark: #1da851;
    --primary-light: #40e179;
    --secondary-color: #075e54;
    --accent-color: #128c7e;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --background: #ffffff;
    --surface: #f8f9fa;
    --border: #e9ecef;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-light: rgba(0, 0, 0, 0.05);
    --gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    --border-radius: 12px;
    --border-radius-small: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius-small);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-contact {
    background: var(--primary-color);
    color: white;
    padding: 8px 20px;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
}

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

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

.nav {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-logo i {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #f8fffe 0%, #f0fdf9 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2325d366' fill-opacity='0.03'%3E%3Ccircle cx='50' cy='50' r='4'/%3E%3Ccircle cx='10' cy='10' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

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

.hero-text {
    z-index: 2;
}

.hero h1 {
    margin-bottom: 1.5rem;
}

.highlight {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat span {
    font-size: 0.9rem;
    color: var(--text-light);
}

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

.phone-mockup {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    transform: rotate(5deg);
    transition: var(--transition);
}

.phone-mockup:hover {
    transform: rotate(0deg) scale(1.05);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 30px;
    overflow: hidden;
    position: relative;
}

.whatsapp-interface {
    height: 100%;
    background: #e5ddd5;
}

.chat-header {
    background: var(--primary-color);
    padding: 15px;
    color: white;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-light);
}

.contact-name {
    font-weight: 600;
    font-size: 16px;
}

.contact-status {
    font-size: 13px;
    opacity: 0.8;
}

.chat-messages {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.message {
    max-width: 80%;
    display: flex;
    flex-direction: column;
}

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

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

.message-content {
    background: #fff;
    padding: 8px 12px;
    border-radius: 18px;
    font-size: 14px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.message.sent .message-content {
    background: #dcf8c6;
}

.message-time {
    font-size: 11px;
    color: var(--text-light);
    align-self: flex-end;
    margin-top: 2px;
}

/* Sections */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-header p {
    font-size: 1.1rem;
}

/* Features Section */
.features {
    background: var(--surface);
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px var(--shadow-light);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px var(--shadow);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

/* Code Example Section */
.code-example {
    background: var(--text-primary);
    color: white;
}

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

.code-text h2 {
    color: white;
    margin-bottom: 1.5rem;
}

.code-text p {
    color: #cccccc;
    margin-bottom: 2rem;
}

.code-features {
    list-style: none;
}

.code-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: #cccccc;
}

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

.code-block {
    background: #1a1a1a;
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid #333;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #262626;
    border-bottom: 1px solid #333;
}

.code-lang {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 500;
}

.code-copy {
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    transition: var(--transition);
}

.code-copy:hover {
    color: var(--primary-color);
}

.code-block pre {
    padding: 1.5rem;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

.code-block code {
    color: #e6e6e6;
}

/* Pricing Section */
.pricing {
    background: var(--surface);
}

.pricing-cards {
    display: flex;
    justify-content: center;
    align-items: center;
}

.pricing-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: 0 4px 20px var(--shadow-light);
    border: 2px solid transparent;
    transition: var(--transition);
    position: relative;
    max-width: 400px;
    width: 100%;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px var(--shadow);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.3);
}

.pricing-card.featured:hover {
    transform: scale(1.08) translateY(-5px);
}

.badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-header h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.price {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    margin-bottom: 0.5rem;
}

.currency {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.period {
    font-size: 1rem;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.pricing-features i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: white;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--surface);
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
}

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

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    background: var(--surface);
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding: 1.5rem;
}

/* CTA Section */
.cta {
    background: var(--gradient);
    color: white;
    text-align: center;
}

.cta h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

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

.cta .btn-primary:hover {
    background: var(--surface);
}

.cta .btn-secondary {
    border-color: white;
    color: white;
}

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

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.footer-section-single {
    text-align: center;
    max-width: 400px;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 2rem;
}

.footer-section-single p {
    color: #cccccc;
    margin-bottom: 1.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    color: #999;
}

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

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

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .code-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .phone-mockup {
        width: 240px;
        height: 480px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        max-width: 300px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .pricing-card {
        padding: 2rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

.hero-image {
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Loading states */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Focus states for accessibility */
.btn:focus,
.nav-menu a:focus,
.faq-question:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Generator Form Styles */
.generator-form-container {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    font-family: 'Inter', sans-serif;
}

#generate-btn {
    width: auto;
    padding: 15px 30px;
    font-size: 18px;
    margin-bottom: 20px;
}

.result-container {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.generated-link-container {
    display: flex;
    align-items: center;
}

.generated-link-container input {
    flex-grow: 1;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
    background-color: #f9f9f9;
    font-size: 16px;
    color: #333;
    border-right: none;
}

.btn-copy {
    padding: 12px 20px;
    border: 1px solid #128C7E;
    background-color: #128C7E;
    color: white;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.btn-copy:hover {
    background-color: #075E54;
}

/* FAQ Section */
.faq {
    background-color: #f9f9f9;
}