:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --dark-bg: #0a0a0b;
    --card-bg: #f8fafc;
    --dark-card-bg: #111827;
    --text-main: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-weight: 700;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 2rem;
    }
}

/* Header & Nav */
.header {
    background-color: rgba(10, 10, 11, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-weight: 700;
    font-size: 1.5rem;
    text-decoration: none;
}

.logo i {
    font-size: 1.5rem;
}

.nav-links-wrapper {
    display: none;
}

@media (min-width: 768px) {
    .nav-links-wrapper {
        display: block;
    }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: 'Inter', sans-serif;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: scale(0.97);
}

.btn-outline {
    background-color: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
    width: 100%;
    text-align: center;
}

/* Hero Section */
.hero {
    background: radial-gradient(circle at top right, #1e293b, #0a0a0b);
    color: var(--white);
    padding: 160px 0 80px;
    position: relative;
    overflow: hidden;
    margin-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    gap: 4rem;
    margin-bottom: 80px;
    position: relative;
    z-index: 1;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.1;
}

@media (min-width: 768px) {
    .hero-text h1 {
        font-size: 4rem;
    }
}

.hero-text h1 .highlight {
    background: linear-gradient(to right, var(--primary-color), #60a5fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.subtitle {
    color: var(--primary-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-description {
    color: #94a3b8;
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
}

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

@media (min-width: 768px) {
    .hero-btns {
        flex-direction: row;
    }
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    filter: drop-shadow(0 0 50px rgba(59, 130, 246, 0.2));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.chat-bubbles {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 10;
}

.bubble {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 10px;
    max-width: 200px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    animation: slideIn 0.6s ease-out forwards;
}

.bubble-1 {
    animation-delay: 0s;
}

.bubble-2 {
    animation-delay: 0.2s;
}

.bubble-3 {
    animation-delay: 0.4s;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.bubble .flag {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.bubble p {
    color: var(--text-main);
    font-size: 0.85rem;
    font-weight: 500;
}

.hero-features {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.feature-item {
    text-align: center;
    flex: 1;
    min-width: 120px;
}

.feature-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    display: block;
}

.feature-item p {
    font-size: 0.8rem;
    color: #94a3b8;
}

/* Info Blocks */
.info-blocks {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 80px 0;
    background-color: var(--white);
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.info-card {
    background-color: var(--card-bg);
    padding: 3rem;
    border-radius: 24px;
    transition: var(--transition);
}

.dark-card {
    background-color: var(--dark-card-bg);
    color: var(--white);
    grid-row: span 2;
    display: flex;
    flex-direction: column;
}

@media (max-width: 767px) {
    .dark-card {
        grid-row: auto;
    }
}

.dark-card p {
    color: #94a3b8;
}

.tag {
    display: inline-block;
    color: var(--primary-color);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.card-icon {
    width: 50px;
    height: 50px;
    background-color: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.card-icon i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.info-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.info-card p {
    margin-bottom: 1rem;
}

.card-img {
    width: 100%;
    border-radius: 16px;
    margin-top: auto;
    object-fit: cover;
}

.list-check {
    list-style: none;
    margin-top: 1.5rem;
}

.list-check li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.8rem;
}

.list-check i {
    color: #ef4444;
}

/* Tech Section */
.tech-section {
    padding: 80px 0;
    background-color: var(--white);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

@media (min-width: 1024px) {
    .tech-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

.tech-info h3,
.tech-list h3,
.app-info h3,
.how-it-works h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.tech-img {
    width: 100%;
    border-radius: 24px;
    margin-top: 2rem;
}

.tech-list ul {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.tech-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 1rem;
    background-color: var(--gray-100);
    border-radius: 12px;
}

.tech-list i {
    color: var(--primary-color);
    width: 20px;
}

.app-info {
    margin-top: 4rem;
}

.app-badges {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.app-screenshot {
    height: 300px;
    border-radius: 12px;
}

.how-it-works {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 3rem;
    border: 1px solid var(--gray-200);
    margin-top: 4rem;
}

.steps {
    display: grid;
    gap: 2rem;
}

.step {
    display: flex;
    gap: 1.5rem;
}

.step-num {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.step h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.step p {
    color: var(--text-light);
}

/* Support Section */
.support-section {
    background-color: var(--dark-card-bg);
    color: var(--white);
    padding: 80px 0;
    border-radius: 40px;
    margin: 80px auto;
}

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

@media (min-width: 1024px) {
    .support-content {
        grid-template-columns: 1fr 1fr;
    }
}

.support-text h3 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.support-text p {
    color: #cbd5e1;
    margin-bottom: 1.5rem;
}

.support-image img {
    width: 100%;
    border-radius: 24px;
}

/* Specs Section */
.specs-section {
    padding: 80px 0;
    background-color: var(--white);
}

.specs-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
}

@media (min-width: 1024px) {
    .specs-content {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

.specs-table h3,
.differences h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.specs-table table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
}

.specs-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-100);
}

.specs-table td:first-child {
    font-weight: 600;
    color: var(--text-light);
}

.list-check-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    list-style: none;
    margin-top: 1.5rem;
}

.list-check-grid li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.list-check-grid i {
    color: #10b981;
}

/* Target Section */
.target-section {
    padding: 80px 0;
    background-color: var(--white);
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.target-item {
    background-color: var(--gray-100);
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
}

.target-item i {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.included-box {
    background-color: var(--gray-100);
    padding: 2.5rem;
    border-radius: 24px;
    margin-top: 3rem;
}

.included-box h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.included-content {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-top: 1.5rem;
}

@media (max-width: 768px) {
    .included-content {
        flex-direction: column;
    }
}

.included-content img {
    width: 150px;
    border-radius: 12px;
}

.included-content ul {
    list-style: none;
}

.included-content li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* Pricing */
.pricing-section {
    padding: 100px 0;
    text-align: center;
    background-color: var(--white);
}

.pricing-card {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 4rem;
    border-radius: 32px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--gray-100);
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.pricing-card h4 {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.price {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 1.5rem 0 0.5rem;
}

.price-note {
    margin: 1.5rem 0 2.5rem;
    color: var(--text-light);
}

.payment-icons {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    font-size: 1.5rem;
    color: #cbd5e1;
}

/* FAQ */
.faq-section {
    padding: 80px 0;
    background-color: var(--white);
}

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

.faq-item {
    border-bottom: 1px solid var(--gray-100);
    padding: 1.5rem 0;
}

.faq-question {
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

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

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-answer {
    padding-top: 1rem;
    color: var(--text-light);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

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

/* Footer */
.footer-cta {
    background-color: var(--dark-card-bg);
    color: var(--white);
    padding: 100px 0 40px;
    text-align: center;
}

.footer-cta h3 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.footer-cta p {
    color: #cbd5e1;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.footer-bottom {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    margin: 2rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.footer-logo i {
    font-size: 1.5rem;
}

.footer-logo h2 {
    font-size: 2rem;
    margin: 0;
}

.copyright {
    color: #475569;
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-content,
    .info-blocks,
    .tech-content,
    .support-content,
    .specs-content,
    .target-section {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 3rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-features {
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .feature-item {
        min-width: 40%;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}