/* CSS Reset and Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Custom Properties */
:root {
    /* Color Palette - Inspired by laboratory/medical themes */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    --secondary-50: #f0fdfa;
    --secondary-100: #ccfbf1;
    --secondary-200: #99f6e4;
    --secondary-300: #5eead4;
    --secondary-400: #2dd4bf;
    --secondary-500: #14b8a6;
    --secondary-600: #0d9488;
    --secondary-700: #0f766e;
    --secondary-800: #115e59;
    --secondary-900: #134e4a;

    --accent-500: #ec4899;
    --accent-600: #db2777;

    --neutral-50: #f9fafb;
    --neutral-100: #f3f4f6;
    --neutral-200: #e5e7eb;
    --neutral-300: #d1d5db;
    --neutral-400: #9ca3af;
    --neutral-500: #6b7280;
    --neutral-600: #4b5563;
    --neutral-700: #374151;
    --neutral-800: #1f2937;
    --neutral-900: #111827;

    --success-500: #10b981;
    --warning-500: #f59e0b;
    --error-500: #ef4444;

    /* Typography */
    --font-family-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing System */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--neutral-700);
    background-color: var(--neutral-50);
}

/* Focus Styles for Accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Skip Link for Screen Readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-600);
    color: white;
    padding: var(--spacing-2) var(--spacing-4);
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Header */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--neutral-200);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: background-color var(--transition-normal);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-4);
    padding-bottom: var(--spacing-4);
}

.logo img {
    height: 40px;
    width: auto;
}

/* Navigation */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
    background-color: var(--neutral-100);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--neutral-700);
    position: relative;
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--neutral-700);
    position: absolute;
    transition: transform var(--transition-fast);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-6);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--neutral-700);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-600);
    background-color: var(--primary-50);
}

.nav-link.active {
    color: var(--primary-600);
    background-color: var(--primary-100);
}

/* Main Content */
.main {
    margin-top: 72px; /* Account for fixed header */
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 35vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    text-align: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -2;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, rgba(0, 24, 114, 0.8) 0%, rgba(106, 179, 230, 0.7) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 1200px;
    color: white;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-6);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-8);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    opacity: 0.95;
}
.hero-subtitle a{
color:white;
font-weight: 600;
}
.hero-actions {
    /*display: flex;*/
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: 1rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    min-height: 48px; /* Accessibility minimum touch target */
}

.btn-primary {
    background-color: var(--primary-600);
    color: white;
    border-color: var(--primary-600);
}

.btn-primary:hover {
    background-color: var(--primary-700);
    border-color: var(--primary-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background-color: white;
    color: var(--primary-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-tertiary {
    background-color: #77bae7;
    color: white;
    border-color: white;
}

.btn-tertiary:hover {
    background-color: #164092;
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Services Section */
.services {
    padding: var(--spacing-10) 0;
    background-color: white;
}

.section-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--neutral-800);
    text-align: center;
    margin-bottom: var(--spacing-4);
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--neutral-600);
    text-align: center;
    margin-bottom: var(--spacing-10);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-8);
    margin-top: var(--spacing-12);
}

.service-card {
    background-color: white;
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--neutral-200);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, rgba(106, 179, 230, 0.7), rgba(0, 24, 114, 0.8));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card--primary {
    border-top-color: rgba(106, 179, 230, 0.7);
}

.service-card--secondary {
    border-top-color: rgba(0, 24, 114, 0.8);
}

.service-card--accent {
    border-top-color: rgba(0, 24, 114, 0.8);
}

.service-icon {
    width: 302px;
    height: 152px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-6);
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
}

.service-card--secondary .service-icon {
    background: linear-gradient(135deg, var(--secondary-500), var(--primary-500));
}

.service-card--accent .service-icon {
    background: linear-gradient(135deg, var(--accent-500), var(--primary-500));
}

.service-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--neutral-800);
    margin-bottom: var(--spacing-4);
    line-height: 1.3;
}

.service-description {
    color: var(--neutral-600);
    margin-bottom: var(--spacing-6);
    line-height: 1.6;
}

.service-link {
    color: var(--primary-600);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    transition: all var(--transition-fast);
}

.service-link:hover {
    color: var(--primary-700);
    transform: translateX(4px);
}

.service-link svg {
    transition: transform var(--transition-fast);
}

.service-link:hover svg {
    transform: translateX(2px);
}

/* Support Section */
.support {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--secondary-50) 100%);
}

.support-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: start;
}

.support-text {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--neutral-700);
    margin-top: 100px;
}

.support-features {
    list-style: none;
    margin-top: var(--spacing-8);
}

.support-features li {
    position: relative;
    padding-left: var(--spacing-8);
    margin-bottom: var(--spacing-3);
    color: var(--neutral-600);
}

.support-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-500);
    font-weight: var(--font-weight-bold);
    font-size: 1.1rem;
}

/* Contact Form */
.contact-form {
    background-color: white;
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--neutral-200);
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--neutral-800);
    margin-bottom: var(--spacing-6);
}

.form-group {
    margin-bottom: var(--spacing-6);
}

.form-label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: var(--neutral-700);
    margin-bottom: var(--spacing-2);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    background-color: white;
    transition: border-color var(--transition-fast);
    min-height: 48px; /* Accessibility minimum touch target */
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--primary-500);
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input:invalid,
.form-select:invalid,
.form-textarea:invalid {
    border-color: var(--error-500);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.error-message {
    display: block;
    color: var(--error-500);
    font-size: 0.875rem;
    margin-top: var(--spacing-1);
    min-height: 1.2em;
}

/* Footer */
.footer {
    background-color: var(--neutral-800);
    color: var(--neutral-300);
    padding: var(--spacing-12) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.footer-copyright {
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--neutral-300);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-400);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-4);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        border-bottom: 1px solid var(--neutral-200);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-4);
        border-radius: var(--radius-lg);
    }

    .hero {
        min-height: 60vh;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-actions {
        justify-content: center;
    }

    .support-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }

    .container {
        padding: 0 var(--spacing-4);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-6);
    }

    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .section-title {
        font-size: 2rem;
    }

    .services {
        padding: var(--spacing-16) 0;
    }

    .support {
        padding: var(--spacing-16) 0;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .hero-background::after {
        background: rgba(0, 0, 0, 0.7);
    }

    .btn-primary {
        background-color: var(--neutral-900);
        border-color: var(--neutral-900);
    }

    .btn-secondary {
        border-color: white;
        color: white;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer {
        display: none;
    }

    .hero-background {
        display: none;
    }

    .main {
        margin-top: 0;
    }

    .service-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--neutral-300);
    }
}