/* ========================================
   LANDING PAGE STYLES v2.0
   ✅ Performance: GPU acceleration
   ✅ Acessibilidade: prefers-reduced-motion
   ======================================== */

/* Screen reader only utility */
.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;
}

/* Header/Navigation */
.header {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

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

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary);
    margin: 0;
}

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

.nav-links a {
    font-weight: 500;
    color: var(--gray-700);
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #F9FAFB 0%, #DBEAFE 100%);
    overflow: hidden;
}

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

.hero-text {
    animation: fadeInUp 0.8s ease both;
}

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

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    /* ✅ Performance */
    will-change: background-position;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat strong {
    font-size: 1.5rem;
    color: var(--gray-900);
}

.stat span {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Hero Card Animation */
.hero-image {
    animation: fadeInRight 0.8s ease 0.2s both;
}

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

.hero-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    /* ✅ Performance */
    will-change: transform;
    transform: translateZ(0);
}

.recording-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--danger);
    font-weight: 600;
}

.pulse {
    width: 12px;
    height: 12px;
    background: var(--danger);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.1);
    }
}

.waveform {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 60px;
    margin: 1.5rem 0;
    gap: 0.5rem;
}

.wave {
    width: 4px;
    background: var(--primary);
    border-radius: var(--radius-full);
    animation: wave 1.5s ease-in-out infinite;
    /* ✅ Performance */
    will-change: height;
}

.wave:nth-child(1) { height: 20px; animation-delay: 0s; }
.wave:nth-child(2) { height: 35px; animation-delay: 0.1s; }
.wave:nth-child(3) { height: 50px; animation-delay: 0.2s; }
.wave:nth-child(4) { height: 40px; animation-delay: 0.3s; }
.wave:nth-child(5) { height: 30px; animation-delay: 0.4s; }
.wave:nth-child(6) { height: 45px; animation-delay: 0.5s; }
.wave:nth-child(7) { height: 25px; animation-delay: 0.6s; }
.wave:nth-child(8) { height: 35px; animation-delay: 0.7s; }

@keyframes wave {
    0%, 100% { height: 20px; }
    50% { height: 50px; }
}

.card-text {
    color: var(--gray-600);
    font-style: italic;
    line-height: 1.8;
}

.processing {
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

.section-label {
    display: inline-block;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.875rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
}

.section-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--gray-600);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.feature-card {
    padding: 2rem;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    /* ✅ Performance */
    contain: layout style paint;
    will-change: transform, box-shadow;
}

.feature-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.8;
    margin: 0;
}

.additional-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.feature-row {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.feature-row:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.feature-icon-small {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-row h4 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.feature-row p {
    color: var(--gray-600);
    margin: 0;
}

/* Pricing Section */
.pricing {
    padding: 6rem 0;
    background: var(--gray-50);
}

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

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    position: relative;
    transition: var(--transition);
    /* ✅ Performance */
    contain: layout style paint;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

.plan-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.plan-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.plan-price {
    display: flex;
    justify-content: center;
    align-items: baseline;
    margin-bottom: 0.5rem;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-900);
}

.period {
    font-size: 1.125rem;
    color: var(--gray-500);
    margin-left: 0.5rem;
}

.plan-description {
    color: var(--gray-600);
    margin: 0;
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
}

.plan-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

.plan-features li:last-child {
    border-bottom: none;
}

/* CTA Section */
.cta {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="rgba(255,255,255,0.03)"/></svg>');
    background-size: 100px 100px;
    opacity: 0.5;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--white);
    margin-bottom: 1rem;
}

.cta p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

.cta .btn-primary:hover {
    background: var(--gray-100);
}

.cta-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    opacity: 0.85;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-section p {
    margin: 0;
}

.footer-section a {
    display: block;
    color: var(--gray-400);
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--white);
    padding-left: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
}

.footer-bottom p {
    margin: 0;
    font-size: 0.875rem;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-image {
        order: -1;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.875rem;
    }
    
    .nav-links .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .hero {
        padding: 3rem 0;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .hero-stats {
        gap: 1.5rem;
        justify-content: space-around;
    }
    
    .features {
        padding: 3rem 0;
    }
    
    .section-header {
        margin-bottom: 2rem;
    }
    
    .features-grid {
        gap: 1.5rem;
    }
    
    .additional-features {
        gap: 1.5rem;
    }
    
    .pricing {
        padding: 3rem 0;
    }
    
    .cta {
        padding: 3rem 0;
    }
    
    .footer {
        padding: 3rem 0 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* ========================================
   PREFERS REDUCED MOTION
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .hero-text,
    .hero-image,
    .pulse,
    .wave {
        animation: none !important;
    }
    
    .feature-card:hover,
    .pricing-card:hover {
        transform: none;
    }
}

/* ========================================
   HIGH CONTRAST MODE
   ======================================== */

@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
    
    .feature-card,
    .pricing-card {
        border-width: 3px;
    }
}