/* ==========================================================================
   CSS Variables & Tokens
   ========================================================================== */
   :root {
    /* Color Palette - Medical Tech Dark/Modern */
    --clr-bg-primary: #0f172a; /* Slate 900 */
    --clr-bg-secondary: #1e293b; /* Slate 800 */
    --clr-bg-light: #f8fafc; /* Slate 50 */
    --clr-text-primary: #f1f5f9; /* Slate 100 */
    --clr-text-secondary: #94a3b8; /* Slate 400 */
    --clr-text-dark: #0f172a;
    
    --clr-accent: #0ea5e9; /* Sky 500 */
    --clr-accent-hover: #0284c7; /* Sky 600 */
    --clr-accent-glow: rgba(14, 165, 233, 0.4);
    
    --clr-success: #10b981;
    --clr-error: #ef4444;

    /* Glassmorphism */
    --glass-bg: rgba(30, 41, 59, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;

    /* Spacing & Layout */
    --section-pad: 5rem 0;
    --container-max: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--clr-bg-primary);
    color: var(--clr-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--clr-text-primary);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 90%;
    max-width: var(--container-max);
    margin: 0 auto;
}

.section {
    padding: var(--section-pad);
}

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

/* ==========================================================================
   Components
   ========================================================================== */
/* Glassmorphism Utilities */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    box-shadow: var(--glass-shadow);
}

.glass-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 2rem;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: 9999px; /* Pill shape */
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    outline: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: var(--clr-accent);
    color: white;
    box-shadow: 0 4px 14px 0 var(--clr-accent-glow);
}

.btn-primary:hover {
    background-color: var(--clr-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 var(--clr-accent-glow);
}

.btn-primary-outline {
    background-color: transparent;
    color: var(--clr-accent);
    border: 2px solid var(--clr-accent);
}

.btn-primary-outline:hover {
    background-color: var(--clr-accent);
    color: white;
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Typography Badges */
.badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: rgba(14, 165, 233, 0.1);
    color: var(--clr-accent);
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.25rem 0;
    z-index: 1000;
    transition: background var(--transition-normal), backdrop-filter var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--clr-text-primary);
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--clr-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a:not(.btn) {
    font-size: 1rem;
    font-weight: 500;
    color: var(--clr-text-primary);
    opacity: 0.8;
    position: relative;
}

.nav-links a:not(.btn):hover {
    opacity: 1;
    color: var(--clr-accent);
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--clr-accent);
    transition: width var(--transition-fast);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--clr-text-primary);
    margin: 5px 0;
    transition: var(--transition-fast);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem; /* Account for navbar */
    overflow: hidden;
}

.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
}

.shape-1 {
    top: -10%;
    right: -5%;
    width: 500px;
    height: 500px;
    background: rgba(14, 165, 233, 0.25);
    animation: float 10s infinite ease-in-out alternate;
}

.shape-2 {
    bottom: 10%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: rgba(79, 70, 229, 0.2);
    animation: float 12s infinite ease-in-out alternate-reverse;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(30px, 50px); }
}

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

.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.125rem;
    color: var(--clr-text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.hero-image {
    position: relative;
}

.hero-image .image-wrapper {
    padding: 1rem;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.hero-image .image-wrapper:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.hero-image img {
    border-radius: 1rem;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features .section-header {
    margin-bottom: 4rem;
}

.features .section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.features .section-header p {
    color: var(--clr-text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.feature-card .icon-wrapper {
    width: 60px;
    height: 60px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-accent);
    margin-bottom: 1.5rem;
}

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

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

/* ==========================================================================
   Technology Section
   ========================================================================== */
.bg-light {
    background-color: var(--clr-bg-light);
    color: var(--clr-text-dark);
}

.bg-light h2, .bg-light h3, .bg-light h4 {
    color: var(--clr-text-dark);
}

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

.tech-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.tech-text p {
    color: #475569;
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-weight: 500;
    color: var(--clr-text-dark);
}

.check-list li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background-color: var(--clr-success);
    color: white;
    border-radius: 50%;
    font-size: 14px;
    font-weight: bold;
}

.tech-visual {
    position: relative;
}

.stats-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 3rem;
    background: #ffffff;
    box-shadow: 0 20px 50px rgba(0,0,0,0.05);
    border-color: rgba(0,0,0,0.05);
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--clr-accent);
    font-family: var(--font-heading);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #64748b;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 0;
    overflow: hidden;
}

.contact-info {
    padding: 4rem;
    background: rgba(14, 165, 233, 0.05);
    border-right: 1px solid var(--glass-border);
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.contact-info p {
    color: var(--clr-text-secondary);
    margin-bottom: 3rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    color: var(--clr-text-primary);
    font-weight: 500;
}

.detail-item svg {
    color: var(--clr-accent);
}

.contact-form-container {
    padding: 4rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--clr-text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: 0.5rem;
    color: var(--clr-text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--clr-accent);
    background: rgba(15, 23, 42, 0.8);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.custom-select-wrapper {
    position: relative;
}

.custom-select-wrapper::after {
    content: '▼';
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--clr-text-secondary);
    font-size: 0.8rem;
}

.form-group select {
    appearance: none;
    cursor: pointer;
}

.form-group select option {
    background-color: var(--clr-bg-secondary);
    color: var(--clr-text-primary);
}

/* Loader */
.btn-loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

.hidden {
    display: none !important;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 0.5rem;
    text-align: center;
    font-weight: 500;
}

.form-status.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--clr-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-status.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--clr-error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    border-top: 1px solid var(--glass-border);
    padding-top: 4rem;
    background: var(--clr-bg-primary);
}

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

.footer-brand p {
    color: var(--clr-text-secondary);
    margin-top: 1rem;
    max-width: 300px;
}

.footer-links h4,
.footer-legal h4 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

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

.footer-links a,
.footer-legal a {
    color: var(--clr-text-secondary);
}

.footer-links a:hover,
.footer-legal a:hover {
    color: var(--clr-accent);
}

.footer-bottom {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--glass-border);
    color: var(--clr-text-secondary);
}

/* ==========================================================================
   Animations (Scroll Reveal)
   ========================================================================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* ==========================================================================
   Media Queries
   ========================================================================== */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content p {
        margin: 0 auto 2.5rem auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .tech-content {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        border-right: none;
        border-bottom: 1px solid var(--glass-border);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--clr-bg-primary);
        flex-direction: column;
        justify-content: center;
        transition: 0.4s ease;
        border-left: 1px solid var(--glass-border);
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}