:root {
    --primary: #3498db;
    --secondary: #2c3e50;
    --accent: #16a085;
    --light: #ecf0f1;
    --dark: #333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f9f9f9;
    color: var(--dark);
    line-height: 1.6;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
}

.logo i {
    color: var(--accent);
    margin-right: 10px;
}

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

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 10px 20px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

.btn:hover {
    background: #138d75;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* Hero Section */
.hero {
    padding: 180px 0 100px;
    background: url('https://images.unsplash.com/photo-1512941937669-90a1b58e7e9c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
    position: relative;
    color: white;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    animation: fadeIn 1.5s ease;
}

.btn-outline {
    background: transparent;
    border: 2px solid white;
}

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

/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 15px;
}

.section-title p {
    color: #777;
    max-width: 700px;
    margin: 0 auto;
}

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

.feature-card {
    background: var(--light);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease-out;
    opacity: 0;
    transform: translateY(20px);
}

.feature-card:hover {
    transform: translateY(-10px) !important;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary);
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background: #f1f5f9;
}

.steps {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-top: 50px;
}

.step {
    flex: 1;
    min-width: 250px;
    text-align: center;
    padding: 0 20px;
    position: relative;
    margin-bottom: 30px;
    opacity: 0;
    transform: translateY(20px);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step h3 {
    margin-bottom: 15px;
    color: var(--secondary);
}

/* Screenshot Section */
.screenshots {
    padding: 100px 0;
    background: white;
}

.screenshot-container {
    display: flex;
    overflow-x: auto;
    gap: 20px;
    padding: 20px 0;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
}

.screenshot-container::-webkit-scrollbar {
    display: none;
}

.screenshot {
    min-width: 250px;
    scroll-snap-align: start;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.screenshot:hover {
    transform: scale(1.05);
}

.screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* FAQ Section */
.testimonials {
    padding: 100px 0;
    background: var(--light);
}

.faq-grid {
    display: grid;
    gap: 15px;
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 12px;
    padding: 0 25px;
    margin-bottom: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease-out;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: 20px 0;
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--secondary);
    font-weight: 600;
    flex: 1;
}

.faq-chevron {
    transition: transform 0.3s ease-out;
    color: var(--primary);
    min-width: 20px;
    margin-left: 15px;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding-bottom 0.3s ease;
    padding-left: 5px;
}

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

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: 20px;
}

.faq-list {
    padding-left: 20px;
    margin-top: 10px;
    list-style: none;
}

.faq-list li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.faq-list li:before {
    content: "•";
    color: var(--accent);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Download Section */
.download {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.download p {
    max-width: 700px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    background: white;
    color: var(--dark);
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
}

.download-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.download-btn i {
    font-size: 1.8rem;
    margin-right: 10px;
    color: var(--primary);
}

.btn-text small {
    display: block;
    font-size: 0.8rem;
    font-weight: normal;
    color: #777;
}

/* Footer */
footer {
    background: var(--secondary);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--accent);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    color: white;
    font-size: 1.2rem;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
}

.social-links a:hover {
    color: var(--accent);
    background: rgba(255,255,255,0.2);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    color: #aaa;
}

/* Language Dropdown */
.language-dropdown {
    position: relative;
}

.lang-current {
    display: flex;
    align-items: center;
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    gap: 8px;
    padding: 8px 15px 8px 12px;
    border-radius: 30px;
    transition: all 0.3s;
}

.lang-current:hover {
    background: rgba(255,255,255,0.1);
}

.lang-flag {
    font-size: 1.2rem;
}

.lang-chevron {
    fill: currentColor;
    transition: transform 0.3s;
    margin-left: 5px;
}

.language-dropdown.active .lang-chevron {
    transform: rotate(180deg);
}

.lang-options {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    min-width: 180px;
    overflow: hidden;
    display: none;
    z-index: 1000;
    margin-top: 10px;
}

.language-dropdown.active .lang-options {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

.lang-option {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: var(--secondary);
    text-decoration: none;
    gap: 12px;
    transition: all 0.2s;
}

.lang-option:hover {
    background: #f5f5f5;
    color: var(--primary);
}

.lang-name {
    flex-grow: 1;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 150px 0 80px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step {
        margin-bottom: 40px;
    }
    
    .step::after {
        content: '↓';
        position: absolute;
        bottom: -25px;
        left: 50%;
        transform: translateX(-50%);
        font-size: 1.5rem;
        color: var(--primary);
    }
    
    .step:last-child::after {
        display: none;
    }
    
    .features, .how-it-works, .screenshots, .testimonials, .download {
        padding: 70px 0;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .nav-actions {
        gap: 10px;
    }
    
    .language-dropdown {
        margin-left: 0;
    }
    
    .faq-question h3 {
        font-size: 1rem;
        padding-right: 10px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.5rem;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 100%;
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}