/* ==================== CSS RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Liquid Glass Color Palette - Medical Theme */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #0f1419;
    --color-glass-bg: rgba(15, 20, 25, 0.4);
    --color-glass-border: rgba(255, 255, 255, 0.08);
    
    /* Medical Color Scheme: Cyan-Blue Gradient */
    --color-primary: #06b6d4; /* Cyan - Trust & Healthcare */
    --color-secondary: #3b82f6; /* Blue - Professionalism */
    --color-accent: #10b981; /* Green - Health & Safety */
    --color-warning: #f59e0b; /* Amber - Important Notice */
    
    /* Typography */
    --color-text-primary: rgba(255, 255, 255, 0.95);
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.5);
    
    /* Liquid Glass Radii (ONLY TWO VALUES) */
    --radius-container: 16px; /* rounded-2xl */
    --radius-full: 9999px; /* rounded-full */
    
    /* Spacing */
    --spacing-section: 6rem;
    --spacing-section-mobile: 3rem;
    
    /* Animation Easing */
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* ==================== GLASS MORPHISM EFFECTS ==================== */
.glass {
    background: var(--color-glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    -webkit-backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border: 1px solid var(--color-glass-border);
    position: relative;
}

/* Fallback for browsers without backdrop-filter support */
@supports not (backdrop-filter: blur(20px)) {
    .glass {
        background: rgba(15, 20, 25, 0.85);
    }
}

/* ==================== NAVIGATION ==================== */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s var(--ease-smooth);
}

nav.scrolled {
    background: var(--color-glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border-bottom: 1px solid var(--color-glass-border);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

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

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

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 6rem 2rem 4rem;
}

.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    max-width: 1280px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 10;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background: var(--color-glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.disclaimer-badge {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-container);
    color: var(--color-warning);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

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

.btn {
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s var(--ease-smooth);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.4);
}

.btn-secondary {
    background: var(--color-glass-bg);
    backdrop-filter: blur(20px);
    color: var(--color-text-primary);
    border: 1px solid var(--color-glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* ==================== SECTION LAYOUT ==================== */
section {
    padding: var(--spacing-section) 2rem;
    position: relative;
}

.section-container {
    max-width: 1280px;
    margin: 0 auto;
}

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

.section-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-full);
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

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

.feature-card {
    padding: 2.5rem;
    border-radius: var(--radius-container);
    transition: all 0.3s var(--ease-smooth);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(6, 182, 212, 0.2);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-container);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.feature-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.feature-note {
    font-size: 0.875rem;
    color: var(--color-warning);
    font-style: italic;
    padding: 0.75rem;
    background: rgba(245, 158, 11, 0.05);
    border-left: 3px solid var(--color-warning);
    border-radius: 4px;
}

/* ==================== BENEFITS SECTION ==================== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.benefit-card {
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius-container);
}

.benefit-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.benefit-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.benefit-description {
    color: var(--color-text-secondary);
}

/* ==================== HOW IT WORKS ==================== */
.workflow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.workflow-step {
    position: relative;
    padding: 2rem;
    border-radius: var(--radius-container);
}

.step-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

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

.workflow-step p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==================== SECURITY SECTION ==================== */
.security-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.security-item {
    display: flex;
    align-items: start;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: var(--radius-container);
}

.security-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
    border-radius: var(--radius-container);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.25rem;
}

.security-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

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

/* ==================== CTA SECTION ==================== */
.cta-section {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(59, 130, 246, 0.1));
    border-radius: var(--radius-container);
    padding: 4rem 2rem;
    text-align: center;
}

.cta-section h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==================== FOOTER ==================== */
footer {
    padding: 3rem 2rem 2rem;
    border-top: 1px solid var(--color-glass-border);
}

.footer-content {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

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

.footer-section ul {
    list-style: none;
}

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

.footer-section a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.3s var(--ease-smooth);
}

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

.footer-disclaimer {
    padding: 2rem;
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-container);
    margin-bottom: 2rem;
}

.footer-disclaimer h4 {
    color: var(--color-warning);
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.footer-disclaimer p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-glass-border);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 768px) {
    :root {
        --spacing-section: var(--spacing-section-mobile);
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        padding: 5rem 1.5rem 3rem;
    }
    
    section {
        padding: var(--spacing-section-mobile) 1.5rem;
    }
    
    .features-grid,
    .benefits-grid,
    .workflow-steps {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

/* ==================== ACCESSIBILITY ==================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}