:root {
    --primary: #0B4F6C;
    --primary-dark: #083D54;
    --primary-light: #E8F4F8;
    --secondary: #FFFFFF;
    --accent: #10B981;
    --accent-dark: #059669;
    --text-primary: #1A1A2E;
    --text-secondary: #4A5568;
    --text-light: #718096;
    --bg-light: #F7FAFC;
    --bg-warm: #FAFBFE;
    --border: #E2E8F0;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 14px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    
    --container-max: 1280px;
    --section-padding-y: 120px;
    --section-padding-y-mobile: 60px;
    
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--text-secondary);
    background-color: var(--bg-warm);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-top: 0;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

p {
    margin-top: 0;
    margin-bottom: 1.5rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover, a:focus {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Utilities */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.text-center { text-align: center; }
.section-header {
    max-width: 800px;
    margin: 0 auto 4rem;
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

.btn:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--secondary);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
    background-color: var(--accent-dark);
    color: var(--secondary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-outline-white {
    background-color: transparent;
    border-color: var(--secondary);
    color: var(--secondary);
}

.btn-outline-white:hover {
    background-color: var(--secondary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-outline-primary {
    background-color: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

/* 1. Navbar */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-base);
    background-color: transparent;
    padding: 1.5rem 0;
}

.landing-nav.scrolled {
    background-color: var(--secondary);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo-icon {
    display: inline-block;
    vertical-align: middle;
    transition: transform var(--transition-base);
}

.nav-logo:hover .logo-icon,
.footer-logo:hover .logo-icon {
    transform: scale(1.08) rotate(5deg);
}

.landing-nav.scrolled .nav-logo {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-links li {
    display: flex;
    align-items: center;
}

.nav-link {
    color: var(--secondary);
    font-weight: 500;
    font-size: 1rem;
    opacity: 0.9;
}

.nav-link:hover {
    opacity: 1;
    color: var(--secondary);
}

.landing-nav.scrolled .nav-link {
    color: var(--text-secondary);
}

.landing-nav.scrolled .nav-link:hover,
.landing-nav.scrolled .nav-link.active {
    color: var(--primary);
}

.nav-link.active {
    opacity: 1;
}

.nav-cta {
    margin-left: 1rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
    padding: 0;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--secondary);
    position: absolute;
    transition: all var(--transition-base);
}

.landing-nav.scrolled .nav-toggle span {
    background-color: var(--primary);
}

.nav-toggle span:first-child { top: 0; }
.nav-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.nav-toggle span:last-child { bottom: 0; }

.landing-nav.nav-open .nav-toggle span:first-child {
    transform: rotate(45deg);
    top: 11px;
}
.landing-nav.nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
}
.landing-nav.nav-open .nav-toggle span:last-child {
    transform: rotate(-45deg);
    bottom: 11px;
}

/* 2. Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background-color: var(--primary);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(11, 79, 108, 0.95) 0%, rgba(8, 61, 84, 0.8) 100%);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-headline {
    color: var(--secondary);
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.15;
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-ctas {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.floating-element {
    animation: float 6s ease-in-out infinite;
}

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

/* 3. Trust Bar */
.trust-bar {
    background-color: var(--secondary);
    padding: 2rem 0;
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 10;
    margin-top: -30px;
    border-radius: var(--radius-lg);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    width: 95%;
}

.trust-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
}

.trust-item svg {
    color: var(--accent);
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

@media (min-width: 1024px) {
    .trust-item:not(:last-child)::after {
        content: '';
        display: block;
        width: 1px;
        height: 24px;
        background-color: var(--border);
        margin-left: 2rem;
        margin-right: -1rem;
    }
}

/* General Section Styles */
section {
    padding: var(--section-padding-y) 0;
}

/* 4. Why Choose Us */
.why-section {
    background-color: var(--bg-warm);
}

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

.why-card {
    background-color: var(--secondary);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    border-left: 4px solid transparent;
    transition: all var(--transition-base);
    height: 100%;
}

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

.why-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    background-color: var(--primary-light);
    border-radius: var(--radius-md);
    color: var(--primary);
}

.why-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.why-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* 5. How It Works */
.how-section {
    background-color: var(--secondary);
}

.how-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
}

@media (min-width: 1024px) {
    .how-grid::before {
        content: '';
        position: absolute;
        top: 40px;
        left: 10%;
        right: 10%;
        height: 2px;
        background-color: var(--primary-light);
        z-index: 1;
    }
}

.how-step {
    position: relative;
    z-index: 2;
    text-align: center;
}

.how-number {
    width: 80px;
    height: 80px;
    background-color: var(--secondary);
    border: 2px solid var(--primary);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: 0 0 0 10px var(--secondary);
    transition: all var(--transition-base);
}

.how-step:hover .how-number {
    background-color: var(--primary);
    color: var(--secondary);
    transform: scale(1.1);
}

.how-step h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.how-step p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 6. Doctors Section */
.doctors-section {
    background-color: var(--bg-light);
}

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

.doctor-card {
    background-color: var(--secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

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

.doctor-image-wrapper {
    position: relative;
    padding-top: 100%;
    background-color: var(--primary-light);
    overflow: hidden;
}

.doctor-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.doctor-card:hover .doctor-image {
    transform: scale(1.05);
}

.doctor-info {
    padding: 2rem;
}

.doctor-name {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.verified-badge {
    color: var(--accent);
    display: inline-flex;
    width: 18px;
    height: 18px;
}

.doctor-specialty {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.doctor-credentials {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.doctor-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background-color: var(--bg-light);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border);
}

/* 7. Services Section */
.services-section {
    background-color: var(--secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
    background-color: var(--secondary);
}

.service-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.service-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.5rem;
}

.service-content h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.service-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* 8. Testimonials Section */
.testimonials-section {
    background-color: var(--bg-warm);
}

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

.testimonial-card {
    background-color: var(--secondary);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    position: relative;
}

.quote-icon {
    position: absolute;
    top: 2rem;
    right: 2rem;
    color: var(--primary-light);
    width: 40px;
    height: 40px;
}

.stars {
    display: flex;
    gap: 0.25rem;
    color: #F59E0B;
    margin-bottom: 1.5rem;
}

.stars svg {
    width: 20px;
    height: 20px;
}

.testimonial-text {
    font-size: 1.125rem;
    font-style: italic;
    margin-bottom: 2rem;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--border);
    object-fit: cover;
}

.author-info h4 {
    margin-bottom: 0;
    font-size: 1rem;
}

.author-info p {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--text-light);
}

/* 9. FAQ Section */
.faq-section {
    background-color: var(--secondary);
}

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

.faq-item {
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
}

.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 1.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.faq-toggle {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
    color: var(--primary);
}

.faq-toggle::before, .faq-toggle::after {
    content: '';
    position: absolute;
    background-color: currentColor;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: transform var(--transition-base);
}

.faq-toggle::before {
    width: 16px;
    height: 2px;
}

.faq-toggle::after {
    width: 2px;
    height: 16px;
}

.faq-item.active .faq-toggle::after {
    transform: translate(-50%, -50%) rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
    color: var(--text-secondary);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    padding-bottom: 1.5rem;
}

/* 10. Final CTA */
.final-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--secondary);
    text-align: center;
    padding: 6rem 1.5rem;
    border-radius: var(--radius-xl);
    max-width: 1200px;
    margin: 0 auto 6rem;
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 50%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
    transform: rotate(30deg);
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--secondary);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.cta-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
}

/* 11. Footer */
.landing-footer {
    background-color: var(--primary-dark);
    color: var(--secondary);
    padding: 5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

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

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-link:hover {
    background-color: var(--accent);
    color: var(--secondary);
    transform: translateY(-3px);
}

.footer-title {
    color: var(--secondary);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
    color: var(--secondary);
    padding-left: 0.25rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.medical-disclaimer {
    width: 100%;
    text-align: center;
    margin-top: 1rem;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
}

/* Animations */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .section-title { font-size: 2.25rem; }
    
    .why-grid, .doctors-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .how-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding-y: var(--section-padding-y-mobile);
    }
    
    .hero-headline { font-size: 2.5rem; }
    .section-title { font-size: 2rem; }
    
    /* Navbar Mobile */
    .nav-toggle { display: block; }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--secondary);
        flex-direction: column;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
        box-shadow: var(--shadow-md);
        gap: 0;
    }
    
    .landing-nav.nav-open .nav-links {
        max-height: 500px;
        padding: 1rem 0;
    }
    
    .nav-links li {
        display: block;
        width: 100%;
    }

    .nav-link {
        color: var(--text-primary);
        padding: 1rem 1.5rem;
        display: block;
        width: 100%;
        text-align: left;
        border-bottom: 1px solid var(--border);
    }
    
    .landing-nav.scrolled .nav-links {
        background-color: var(--secondary);
    }
    
    .nav-cta {
        margin: 1rem 1.5rem;
        display: block;
        text-align: center;
    }
    
    .why-grid, .doctors-grid, .testimonials-grid, .services-grid {
        grid-template-columns: 1fr;
    }
    
    .how-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .how-grid::before {
        display: none;
    }
    
    .how-step {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .final-cta {
        padding: 4rem 1.5rem;
        border-radius: var(--radius-lg);
        margin: 0 1rem 4rem;
    }
    
    .cta-content h2 { font-size: 2rem; }
}

@media (max-width: 480px) {
    .hero-headline { font-size: 2rem; }
    .section-title { font-size: 1.75rem; }
    .btn { width: 100%; }
    
    .trust-container {
        flex-direction: column;
        align-items: flex-start;
        padding: 0 1rem;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .animate-in {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* Print Styles */
@media print {
    body { background-color: #fff; color: #000; }
    .landing-nav, .hero-ctas, .nav-cta, .final-cta { display: none; }
    .hero { min-height: auto; padding: 4rem 0; background: none; }
    .hero-headline { color: #000; }
    .hero-subtitle { color: #333; }
    .why-card, .doctor-card, .service-card, .testimonial-card { 
        box-shadow: none; 
        border: 1px solid #ddd;
        break-inside: avoid;
    }
    a { color: #000; text-decoration: underline; }
}