/* Screen Reader Only - SEO */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Navigation - Removed */

/* App Hero Section */
.app-hero {
    padding: 120px 20px;
    text-align: center;
    position: relative;
    margin-bottom: 120px;
    background: radial-gradient(ellipse at top, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at bottom, rgba(167, 139, 250, 0.1) 0%, transparent 50%);
    overflow: hidden;
}

.app-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 1px, transparent 1px);
    background-size: 80px 80px;
    animation: moveBackground 30s linear infinite;
    pointer-events: none;
}

@keyframes moveBackground {
    0% { transform: translate(0, 0); }
    100% { transform: translate(80px, 80px); }
}

.app-hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.app-hero-content {
    max-width: 600px;
    text-align: left;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out;
}

.app-hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.phone-mockup {
    position: sticky;
    top: 100px;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.phone-screenshot {
    width: 100%;
    height: auto;
    /* border-radius: 40px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4),
                0 0 60px rgba(139, 92, 246, 0.3);
    filter: drop-shadow(0 20px 40px rgba(139, 92, 246, 0.2)); */
}

.app-icon-large {
    font-size: 6rem;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    position: relative;
    z-index: 1;
}

.app-logo {
    width: 140px;
    height: 140px;
    object-fit: contain;
    border-radius: 50px;
    filter: drop-shadow(0 20px 60px rgba(139, 92, 246, 0.5)) 
            drop-shadow(0 0 40px rgba(167, 139, 250, 0.3));
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(167, 139, 250, 0.2) 100%);
    padding: 24px;
    border: 1px solid rgba(139, 92, 246, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.app-icon-large:hover .app-logo {
    transform: scale(1.05);
    filter: drop-shadow(0 25px 70px rgba(139, 92, 246, 0.6)) 
            drop-shadow(0 0 50px rgba(167, 139, 250, 0.4));
    border-color: rgba(139, 92, 246, 0.5);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

.app-title {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 28px;
    letter-spacing: 0.02em;
    line-height: 1.1;
    animation: fadeInUp 0.8s ease-out 0.3s both;
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 50%, #c7d2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(139, 92, 246, 0.3);
    position: relative;
    z-index: 1;
    text-align: left;
}

.highlight-tempo {
    background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(139, 92, 246, 0.2));
}

.app-title .title-line {
    display: block;
}

.app-title .title-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-slogan {
    font-size: 1.75rem;
    color: var(--primary-light);
    margin-top: 24px;
    margin-bottom: 40px;
    font-weight: 700;
    letter-spacing: 0.15em;
    animation: fadeInUp 0.8s ease-out 0.2s both;
    position: relative;
    z-index: 1;
    text-transform: uppercase;
    background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 50%, #c4b5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(139, 92, 246, 0.5));
    text-shadow: 0 0 30px rgba(167, 139, 250, 0.4);
}

.app-tagline {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 50px;
    font-weight: 400;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.4s both;
    max-width: 100%;
    position: relative;
    z-index: 1;
    text-align: left;
}

.app-badges {
    display: flex;
    justify-content: flex-start;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.social-proof {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.avatar-group {
    display: flex;
    gap: -8px;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(148, 163, 184, 0.3);
    border: 2px solid var(--bg-primary);
    margin-left: -8px;
}

.avatar:first-child {
    margin-left: 0;
}

.social-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

/* App Sections */
.app-section {
    padding: 100px 20px;
    position: relative;
}

.app-section-alt {
    background: rgba(30, 41, 59, 0.3);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.section-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
    line-height: 1.1;
    text-align: center;
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 50%, #c7d2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title .title-line {
    display: block;
}

.section-title .title-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    text-align: center;
    margin-top: 16px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 40px 32px;
    border-radius: 24px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-card);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: var(--shadow-xl);
}

.feature-icon-container {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: rgba(139, 92, 246, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon-container {
    transform: scale(1.1);
}

.feature-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
    stroke-width: 2.5;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
    letter-spacing: -0.01em;
}

.feature-description {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* Screenshots Grid */
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
    justify-items: center;
}

.screenshot-item {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 20px;
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
}

.screenshot-item:hover {
    transform: translateY(-8px);
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: var(--shadow-xl);
}

.screenshot-item img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    display: block;
    transition: transform 0.3s ease;
}

.screenshot-item:hover img {
    transform: scale(1.02);
}

.screenshot-placeholder {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px dashed rgba(139, 92, 246, 0.3);
    border-radius: 24px;
    padding: 60px 20px;
    text-align: center;
    color: var(--text-secondary);
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.screenshot-placeholder:hover {
    border-color: rgba(139, 92, 246, 0.5);
    background: rgba(30, 41, 59, 0.8);
}

.screenshot-placeholder p {
    margin: 0;
    font-size: 1rem;
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-content p {
    margin-bottom: 20px;
}

/* CTA Section */
.cta-section {
    padding: 100px 20px;
    position: relative;
}

.cta-card {
    max-width: 900px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.25) 0%, rgba(167, 139, 250, 0.2) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(139, 92, 246, 0.4);
    border-radius: 32px;
    padding: 60px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(139, 92, 246, 0.3), 0 0 80px rgba(139, 92, 246, 0.15);
}

.cta-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.cta-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.5;
}

.cta-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 50%, #c7d2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
    line-height: 1.7;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* App Footer */
.app-footer {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    padding: 60px 20px 40px;
    border-top: 1px solid var(--border-color);
    margin-top: 80px;
}

.app-footer .container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    color: white;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--primary-color);
}

.footer-copyright {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .features-grid,
    .screenshots-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 15px;
    }
    
    .app-section {
        padding: 80px 20px;
    }
}

@media (max-width: 768px) {
    .app-hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .app-hero-content {
        text-align: center;
        max-width: 100%;
    }
    
    .app-icon-large {
        justify-content: center;
    }
    
    .app-badges {
        justify-content: center;
    }
    
    .phone-mockup {
        position: relative;
        top: 0;
        max-width: 300px;
    }
    
    .app-title {
        font-size: 3rem;
        text-align: center;
    }
    
    .app-tagline {
        text-align: center;
    }
    
    .app-slogan {
        font-size: 1.5rem;
    }
    
    .app-tagline {
        font-size: 1.125rem;
    }
    
    .app-icon-large {
        font-size: 4.5rem;
    }
    
    .app-logo {
        width: 120px;
        height: 120px;
        padding: 20px;
        border-radius: 28px;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .app-section {
        padding: 60px 20px;
    }
    
    .app-hero {
        padding: 60px 20px;
        margin-bottom: 60px;
    }
    
    .feature-card {
        padding: 35px 28px;
    }
    
    .cta-card {
        padding: 50px 30px;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .app-title {
        font-size: 2.25rem;
    }
    
    .app-tagline {
        font-size: 1rem;
    }
    
    .app-icon-large {
        font-size: 3.5rem;
    }
    
    .app-logo {
        width: 100px;
        height: 100px;
        padding: 16px;
        border-radius: 24px;
    }
    
    .app-title {
        font-size: 2.5rem;
    }
    
    .app-slogan {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .app-section {
        padding: 50px 15px;
    }
    
    .app-hero {
        padding: 50px 15px;
    }
    
    .feature-card {
        padding: 30px 24px;
        border-radius: 20px;
    }
    
    .feature-icon-container {
        width: 56px;
        height: 56px;
    }
    
    .feature-icon {
        width: 28px;
        height: 28px;
    }
    
    .screenshot-placeholder {
        min-height: 400px;
        padding: 40px 15px;
    }
    
    .cta-card {
        padding: 40px 25px;
        border-radius: 24px;
    }
    
    .cta-title {
        font-size: 1.75rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

/* Touch-friendly */
@media (hover: none) and (pointer: coarse) {
    .feature-card:active {
        transform: translateY(-4px);
    }
    
    .app-card:active {
        transform: translateY(-4px);
    }
}