* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #10B981;
    --primary-dark: #059669;
    --primary-light: #D1FAE5;
    --secondary-color: #2c3e50;
    --text-dark: #1F2937;
    --text-light: #6B7280;
    --background-light: #F9FAFB;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

header {
    background: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-image {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

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

.playstore-btn {
    background: var(--primary-color);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background 0.3s;
}

.playstore-btn:hover {
    background: var(--primary-dark);
    color: white !important;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
}

.whatsapp-icon {
    color: #25D366;
    font-size: 1.5rem;
    transition: transform 0.3s;
}

.whatsapp-icon:hover {
    transform: scale(1.1);
}

.hero {
    margin-top: 80px;
    background: linear-gradient(135deg, var(--primary-light) 0%, #E0F2FE 100%);
    padding: 4rem 2rem;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.cta-button {
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.3s;
}

.cta-button:hover {
    background: var(--primary-dark);
}

.hero-image {
    text-align: center;
}

.illustration {
    max-width: 100%;
    height: auto;
}

.features {
    padding: 4rem 2rem;
    background: white;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
    background: var(--background-light);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
}

.section {
    padding: 4rem 2rem;
}

.section-alt {
    background: var(--background-light);
}

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

.section-title {
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 3rem;
}

.chart-img, .faq-item img {
    max-width: 50%;
    display: block;
    margin: 0 auto;
}

.about-content {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.specialist-content {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
}

.specialist-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.specialist-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.book-btn {
    background: white;
    color: var(--primary-color);
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s;
}

.book-btn:hover {
    transform: scale(1.05);
}

.steps {
    display: grid;
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.step:nth-child(even) {
    direction: rtl;
}

.step:nth-child(even) > * {
    direction: ltr;
}

.step-content h3 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    font-weight: 600;
}

.step-content h4 {
    color: var(--text-dark);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.step-content p {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.05rem;
}

.step-image {
    text-align: center;
}

.step-image img {
    max-width: 200px;
    display: block;
    margin: 0 auto;
}


.step-icon {
    font-size: 8rem;
    color: var(--primary-color);
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.audience-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    text-align: center;
}

.audience-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 3rem;
}

.audience-card h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.devices-section {
    text-align: center;
    margin-top: 3rem;
}

.devices-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.device-icon {
    width: 120px;
    height: 120px;
    background: var(--primary-light);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 3rem;
    transition: transform 0.3s;
}

.device-icon:hover {
    transform: translateY(-5px);
}

.device-icon span {
    font-size: 0.8rem;
    margin-top: 0.5rem;
    font-weight: 600;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.benefit-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    border-left: 4px solid var(--primary-color);
}

.benefit-card h4 {
    color: var(--text-dark);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.benefit-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.app-features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.app-feature {
    padding: 2rem;
    background: white;
    border-radius: 12px;
    transition: transform 0.3s;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    text-align: center;
}

.app-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.2);
}

.app-feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1rem;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 2rem;
}

.app-feature h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.app-feature p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    padding: 2.5rem;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* .faq-item img {
    max-width: 300px;
    display: block;
    margin: 0 auto 1.5rem auto;
} */

.faq-item h3 {
    color: var(--text-dark);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.faq-item p {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.05rem;
}

.download {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.download-container {
    max-width: 800px;
    margin: 0 auto;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.download-btn {
    background: white;
    color: var(--primary-color);
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.3s;
}

.download-btn:hover {
    transform: scale(1.05);
}

footer {
    background: var(--secondary-color);
    color: white;
    padding: 3rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-section p, .footer-section a {
    color: #bbb;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
}

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

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s;
    display: inline-block;
}

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

.copyright {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid #444;
    color: #888;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
}

.who-vitals-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.who-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s;
}

.who-card:hover {
    transform: translateY(-5px);
}

.who-icon {
    margin-bottom: 1.5rem;
}

.who-icon img {
    width: 120px;
    height: 120px;
    object-fit: contain;
}

.who-card h4 {
    color: var(--text-dark);
    font-size: 1rem;
    line-height: 1.5;
    font-weight: 500;
}

.mobile-topbar {
    display: none;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem;
    text-align: center;
    font-size: 0.9rem;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1001;
}

.mobile-topbar a {
    text-decoration: none;
    color: #ffffff;
}

.mobile-topbar i {
    margin-right: 0.5rem;
    color: #25D366;
}

@media (max-width: 968px) {
    .chart-img {
        max-width: 80%;
    }

    .mobile-topbar {
        display: block;
    }

    header {
        top: 30px;
    }

    .hero {
        margin-top: 110px;
    }

    .mobile-menu-btn {
        display: none;
    }

    .nav-links {
        display: flex;
        gap: 1rem;
    }

    .nav-links .contact-info {
        display: none;
    }

    .logo-image {
        height: 40px;
    }

    .playstore-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    nav {
        padding: 0 1rem;
    }

    .section {
        padding: 2rem 1rem;
    }

    .hero {
        padding: 2rem 1rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .features {
        padding: 2rem 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .step {
        grid-template-columns: 1fr;
        padding: 2rem 1rem;
        gap: 1.5rem;
    }

    .step:nth-child(even) {
        direction: ltr;
    }

    .about-content {
        padding: 2rem 1rem;
    }

    .specialist-content {
        padding: 2rem 1rem;
    }

    .app-features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .app-feature {
        padding: 1.5rem 1rem;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .benefit-card {
        padding: 1.5rem;
    }

    .who-vitals-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .who-card {
        padding: 1.5rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    footer {
        padding: 2rem 1rem;
    }

    .download {
        padding: 2rem 1rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .faq-container {
        padding: 0 1rem;
    }

    .faq-item {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .app-features-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 1.5rem 0.5rem;
    }

    .hero {
        padding: 1.5rem 0.5rem;
    }

    .features {
        padding: 1.5rem 0.5rem;
    }

    .feature-card {
        padding: 1rem;
    }

    .step {
        padding: 1.5rem 0.5rem;
    }

    .about-content {
        padding: 1.5rem 0.5rem;
    }

    .specialist-content {
        padding: 1.5rem 0.5rem;
    }

    .benefit-card {
        padding: 1rem;
    }

    .who-vitals-grid {
        grid-template-columns: 1fr;
    }

    .who-card {
        padding: 1rem;
    }

    .faq-item {
        padding: 1rem;
    }

    footer {
        padding: 1.5rem 0.5rem;
    }

    .download {
        padding: 1.5rem 0.5rem;
    }
}