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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: inherit;
}

.logo-img {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #8B5CF6;
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    overflow: hidden;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    line-height: 1.7;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

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

.phone-mockup {
    width: 280px;
    height: 560px;
    background: #1f2937;
    border-radius: 2rem;
    padding: 1rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: #4b5563;
    border-radius: 2px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    border-radius: 1.5rem;
    overflow: hidden;
}

.app-preview {
    padding: 1rem;
    height: 100%;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.app-header img {
    width: 24px;
    height: 24px;
}

.app-header h3 {
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
}

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

.post-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.avatar {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

.post-info {
    flex: 1;
}

.username {
    display: block;
    color: white;
    font-weight: 500;
    font-size: 0.875rem;
}

.time {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.75rem;
}

.mood {
    background: rgba(139, 92, 246, 0.2);
    color: #c4b5fd;
    padding: 0.25rem 0.5rem;
    border-radius: 0.5rem;
    font-size: 0.75rem;
}

.post-content {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.post-actions {
    display: flex;
    gap: 1rem;
}

.action {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #1f2937, #4b5563);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: 1.25rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #f3f4f6;
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
    border-color: #8B5CF6;
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    color: #8B5CF6;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.feature-description {
    color: #6b7280;
    line-height: 1.6;
}

/* Download Section */
.download {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

.download-content {
    text-align: center;
}

.download-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1f2937;
}

.download-description {
    font-size: 1.25rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.download-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border: 1px solid #f3f4f6;
    position: relative;
    transition: all 0.3s ease;
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.download-card.featured {
    border: 2px solid #8B5CF6;
    background: linear-gradient(135deg, #faf5ff, #f3e8ff);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.download-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    color: #8B5CF6;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon svg {
    width: 100%;
    height: 100%;
}

.download-option-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.download-option-description {
    color: #6b7280;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
    color: white;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
}

.download-btn-icon {
    width: 20px;
    height: 20px;
}

.download-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.feature-tag {
    background: #f3f4f6;
    color: #4b5563;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.installation-note {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: #fef3c7;
    border: 1px solid #fbbf24;
    border-radius: 0.75rem;
    padding: 1.5rem;
    max-width: 600px;
    margin: 0 auto;
    text-align: left;
}

.note-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: #d97706;
}

.note-icon svg {
    width: 100%;
    height: 100%;
}

.note-content {
    color: #92400e;
    line-height: 1.6;
}

/* Tech Stack Section */
.tech-stack {
    padding: 6rem 0;
    background: white;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: #f8fafc;
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: #f1f5f9;
    transform: translateY(-2px);
}

.tech-logo {
    width: 40px;
    height: 40px;
    color: #8B5CF6;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-logo svg {
    width: 100%;
    height: 100%;
}

.tech-name {
    font-weight: 600;
    color: #1f2937;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-logo-img {
    width: 32px;
    height: 32px;
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-description {
    color: #9ca3af;
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.footer-section-title {
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-link {
    display: block;
    color: #9ca3af;
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #8B5CF6;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
}

.footer-copyright {
    color: #9ca3af;
}

.footer-copyright a {
    color: #8B5CF6;
    text-decoration: none;
}

.footer-copyright a:hover {
    text-decoration: underline;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 0.5rem;
    color: #9ca3af;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: #8B5CF6;
    color: white;
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .phone-mockup {
        width: 240px;
        height: 480px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .download-options {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.5rem;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .download-title {
        font-size: 2rem;
    }
}

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

.hero-content > * {
    animation: fadeInUp 0.8s ease-out;
}

.feature-card {
    animation: fadeInUp 0.8s ease-out;
}

.download-card {
    animation: fadeInUp 0.8s ease-out;
}