/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-black: #000000;
    --secondary-black: #111111;
    --accent-white: #ffffff;
    --text-gray: #666666;
    --text-light: #999999;
    --fluorescent-cyan: #4dd0e1;
    --fluorescent-magenta: #ba68c8;
    --fluorescent-yellow: #ffd54f;
    --gradient-primary: linear-gradient(135deg, #4dd0e1 0%, #ba68c8 50%, #ffd54f 100%);
    --gradient-secondary: linear-gradient(45deg, #000000 0%, #333333 100%);
    --shadow-glow: 0 0 20px rgba(77, 208, 225, 0.2);
    --shadow-glow-magenta: 0 0 20px rgba(186, 104, 200, 0.2);
    --shadow-glow-yellow: 0 0 20px rgba(255, 213, 79, 0.2);
}

body {
    font-family: 'Nunito', sans-serif;
    background-color: var(--primary-black);
    color: var(--accent-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Language Switcher */
.language-switcher {
    display: flex;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 5px;
    backdrop-filter: blur(10px);
    margin-right: 20px;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-light);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.lang-btn.active {
    background: var(--gradient-primary);
    color: var(--primary-black);
    box-shadow: var(--shadow-glow);
}

.lang-btn:hover:not(.active) {
    color: var(--accent-white);
    background: rgba(255, 255, 255, 0.1);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    z-index: 999;
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.nav-logo {
    flex: 1;
}

.nav-logo h1 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.8rem;
    font-weight: 700;
    text-shadow: var(--shadow-glow);
}

.nav-menu {
    display: flex;
    gap: 30px;
    flex: 1;
    justify-content: center;
}

.nav-right {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: flex-end;
}

.nav-link {
    color: var(--accent-white);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--fluorescent-cyan);
    text-shadow: 0 0 10px var(--fluorescent-cyan);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--accent-white);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-secondary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(77, 208, 225, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(186, 104, 200, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(255, 213, 79, 0.05) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

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

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: slideInLeft 1s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    text-shadow: var(--shadow-glow);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { filter: drop-shadow(0 0 20px rgba(77, 208, 225, 0.3)); }
    to { filter: drop-shadow(0 0 30px rgba(186, 104, 200, 0.3)); }
}

.hero-slogan {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 30px;
    font-weight: 300;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--primary-black);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(77, 208, 225, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-white);
    border: 2px solid var(--fluorescent-cyan);
}

.btn-secondary:hover {
    background: var(--fluorescent-cyan);
    color: var(--primary-black);
    box-shadow: var(--shadow-glow);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slideInRight 1s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.app-screenshot {
    max-width: 280px;
    width: 100%;
    height: auto;
    position: relative;
}

.app-screenshot img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.app-screenshot:hover img {
    transform: scale(1.02);
    box-shadow: 0 40px 100px rgba(77, 208, 225, 0.2);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--secondary-black);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(186, 104, 200, 0.03) 0%, transparent 50%);
}

.section-title {
    text-align: center;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 60px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 2;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    position: relative;
    z-index: 2;
}

.feature-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--fluorescent-cyan);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-black);
    box-shadow: var(--shadow-glow);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent-white);
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* Screenshots Section */
.screenshots {
    padding: 100px 0;
    background: var(--primary-black);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.screenshot-item {
    text-align: center;
    position: relative;
}

.screenshot-item img {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.screenshot-item:hover img {
    transform: scale(1.05);
    border-color: var(--fluorescent-cyan);
    box-shadow: 0 30px 80px rgba(77, 208, 225, 0.2);
}

/* Download Section */
.download {
    padding: 100px 0;
    background: var(--gradient-secondary);
    text-align: center;
    position: relative;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(255, 213, 79, 0.05) 0%, transparent 70%);
}

.download-content {
    position: relative;
    z-index: 2;
}

.download-content h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 30px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-content p {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.download-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--gradient-primary);
    color: var(--primary-black);
    padding: 15px 30px;
    border-radius: 15px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-glow);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(77, 208, 225, 0.3);
}

.download-btn i {
    font-size: 2rem;
}

.download-btn div {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.download-btn div span:first-child {
    font-size: 0.9rem;
    font-weight: 400;
}

.download-btn div span:last-child {
    font-size: 1.2rem;
    font-weight: 700;
}

/* Footer */
.footer {
    background: var(--secondary-black);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo h3 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.footer-logo p {
    color: var(--text-gray);
}

.footer-links {
    display: flex;
    gap: 30px;
    justify-content: flex-end;
    align-items: center;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--fluorescent-cyan);
    text-shadow: 0 0 10px var(--fluorescent-cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-gray);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
    }
    
    .language-switcher {
        margin-right: 10px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-slogan {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .app-screenshot {
        max-width: 220px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .language-switcher {
        top: 10px;
        right: 10px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .download-content h2 {
        font-size: 2rem;
    }
    
    .app-screenshot {
        max-width: 180px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
}

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

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

.feature-card, .screenshot-item {
    animation: fadeInUp 0.6s ease-out;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-black);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--fluorescent-cyan);
}