/* BioByt Design System CSS */

/* Import Google Fonts */
@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap");

/* CSS Custom Properties - Design Tokens */
:root {
    /* Primary Palette */
    --color-trust-blue: #247ba0;
    --color-biopulse-green: #38c07e;
    --color-genome-purple: #5a4fff;

    /* Trust Blue Variations */
    --color-trust-blue-light: #3a8fb5;
    --color-trust-blue-dark: #1a5a7a;
    --color-trust-blue-50: rgba(36, 123, 160, 0.05);
    --color-trust-blue-100: rgba(36, 123, 160, 0.1);
    --color-trust-blue-200: rgba(36, 123, 160, 0.2);

    /* BioPulse Green Variations */
    --color-biopulse-green-light: #4dd894;
    --color-biopulse-green-dark: #2a9d65;
    --color-biopulse-green-50: rgba(56, 192, 126, 0.05);
    --color-biopulse-green-100: rgba(56, 192, 126, 0.1);
    --color-biopulse-green-200: rgba(56, 192, 126, 0.2);

    /* Genome Purple Variations */
    --color-genome-purple-light: #7066ff;
    --color-genome-purple-dark: #4338cc;
    --color-genome-purple-50: rgba(90, 79, 255, 0.05);
    --color-genome-purple-100: rgba(90, 79, 255, 0.1);
    --color-genome-purple-200: rgba(90, 79, 255, 0.2);

    /* WCAG AA Compliant Greys */
    --color-grey-50: #f9fafb;
    --color-grey-100: #f3f4f6;
    --color-grey-200: #e5e7eb;
    --color-grey-300: #d1d5db;
    --color-grey-400: #9ca3af;
    --color-grey-500: #6b7280;
    --color-grey-600: #4b5563;
    --color-grey-700: #374151;
    --color-grey-800: #1f2937;
    --color-grey-900: #111827;

    /* Semantic Colors */
    --color-success: var(--color-biopulse-green);
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: var(--color-trust-blue);

    /* Typography */
    --font-heading:
        "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI",
        sans-serif;
    --font-body:
        "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);

    /* Transitions */
    --transition-micro: all 120ms ease-out;
    --transition-page: all 240ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: all 300ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Container Widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-grey-800);
    background-color: #ffffff;
    min-height: 100vh;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--color-grey-900);
}

h1 {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-6);
}
h2 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-5);
}
h3 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}
h4 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
}
h5 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}
h6 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
}

p {
    margin-bottom: var(--space-4);
    line-height: var(--leading-relaxed);
}

a {
    color: var(--color-trust-blue);
    text-decoration: none;
    transition: var(--transition-micro);
}

a:hover {
    color: var(--color-trust-blue-dark);
    text-decoration: underline;
}

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

@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-grey-200);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition-micro);
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: var(--space-4) 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-xl);
    color: var(--color-trust-blue);
    text-decoration: none;
}

.navbar-brand img {
    height: 40px;
    width: auto;
}

.navbar-nav {
    display: none;
    list-style: none;
    gap: var(--space);
    align-items: center;
    margin-left: var(--space-6);
}

@media (min-width: 1024px) {
    .navbar-nav {
        display: flex;
    }
}

.hero-cta {
    margin-left: auto;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    font-weight: 500;
    color: var(--color-grey-700);
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition-micro);
}

.nav-link:hover {
    color: var(--color-trust-blue);
    background-color: var(--color-trust-blue-50);
    text-decoration: none;
}

.nav-link.has-dropdown::after {
    content: "▾";
    font-size: var(--text-xs);
    margin-left: var(--space-1);
    transition: var(--transition-micro);
}

.nav-item:hover .nav-link.has-dropdown::after {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border: 1px solid var(--color-grey-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-page);
    z-index: 1001;
    min-width: 800px;
    padding: var(--space-6);
}

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

.dropdown-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.dropdown-column h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-grey-900);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 2px solid var(--color-trust-blue);
}

.dropdown-item {
    display: block;
    padding: var(--space-3);
    color: var(--color-grey-700);
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition-micro);
    margin-bottom: var(--space-2);
}

.dropdown-item:hover {
    background-color: var(--color-grey-50);
    color: var(--color-trust-blue);
    text-decoration: none;
}

.dropdown-item-title {
    font-weight: 600;
    color: var(--color-grey-900);
    margin-bottom: var(--space-1);
}

.dropdown-item-desc {
    font-size: var(--text-sm);
    color: var(--color-grey-600);
    line-height: var(--leading-snug);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius);
    transition: var(--transition-micro);
}

@media (min-width: 1024px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle:hover {
    background-color: var(--color-grey-100);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-grey-700);
    border-radius: 1px;
    transition: var(--transition-micro);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--text-base);
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-micro);
    white-space: nowrap;
}

.btn:focus {
    outline: 2px solid var(--color-trust-blue);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    background-color: var(--color-biopulse-green-dark);
    border-color: var(--color-biopulse-green-dark);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-trust-blue);
    border-color: var(--color-trust-blue);
}

.btn-secondary:hover {
    background-color: var(--color-trust-blue);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-grey-700);
    border-color: var(--color-grey-300);
}

.btn-outline:hover {
    background-color: var(--color-grey-50);
    border-color: var(--color-grey-400);
    color: var(--color-grey-900);
    text-decoration: none;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

/* Hero Section */
.hero {
    padding: var(--space-32) 0 var(--space-24);
    background: linear-gradient(
        135deg,
        var(--color-trust-blue-50) 0%,
        var(--color-genome-purple-50) 100%
    );
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1" fill="%23247BA0" fill-opacity="0.05"/></svg>')
        repeat;
    background-size: 50px 50px;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: var(--text-6xl);
    margin-bottom: var(--space-6);
    background: linear-gradient(
        135deg,
        var(--color-trust-blue) 0%,
        var(--color-genome-purple) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: var(--text-4xl);
    }
}

.hero p {
    font-size: var(--text-xl);
    color: var(--color-grey-600);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Badge Component */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-full);
    border: 1px solid;
    transition: var(--transition-micro);
}

.badge-success {
    background-color: var(--color-biopulse-green-50);
    color: var(--color-biopulse-green-dark);
    border-color: var(--color-biopulse-green-200);
}

.badge-info {
    background-color: var(--color-trust-blue-50);
    color: var(--color-trust-blue-dark);
    border-color: var(--color-trust-blue-200);
}

.badge-purple {
    background-color: var(--color-genome-purple-50);
    color: var(--color-genome-purple-dark);
    border-color: var(--color-genome-purple-200);
}

/* Card Component */
.card {
    background: white;
    border: 1px solid var(--color-grey-200);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-micro);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    margin-bottom: var(--space-4);
}

.card-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-grey-900);
    margin-top: var(--space-3);
    margin-bottom: var(--space-2);
}

.card-description {
    color: var(--color-grey-600);
    line-height: var(--leading-relaxed);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}
.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}
.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}
.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 769px) and (max-width: 1023px) {
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Section Styles */
.section {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-xl);
    color: var(--color-grey-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--leading-relaxed);
}

/* Feature Highlight */
.feature-highlight {
    background: linear-gradient(
        135deg,
        var(--color-genome-purple-50) 0%,
        var(--color-biopulse-green-50) 100%
    );
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    margin: var(--space-8) 0;
    border: 2px solid var(--color-genome-purple-200);
    position: relative;
    overflow: hidden;
}

.feature-highlight::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(
        90deg,
        var(--color-genome-purple) 0%,
        var(--color-biopulse-green) 100%
    );
}

/* Footer */
.footer {
    background-color: var(--color-grey-900);
    color: var(--color-grey-300);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    color: white;
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--color-grey-400);
    text-decoration: none;
    transition: var(--transition-micro);
}

.footer-links a:hover {
    color: var(--color-biopulse-green);
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid var(--color-grey-700);
    padding-top: var(--space-6);
    text-align: center;
    color: var(--color-grey-500);
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for keyboard navigation */
*:focus {
    outline: 2px solid var(--color-trust-blue);
    outline-offset: 2px;
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-grey-600: #000000;
        --color-grey-700: #000000;
        --color-grey-800: #000000;
        --color-grey-900: #000000;
    }
}

/* Print styles */
@media print {
    .navbar,
    .mobile-menu-toggle,
    .btn,
    .footer {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.4;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        page-break-after: avoid;
    }
}

/* Loading Animation */
@keyframes pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Utility Classes */
.text-center {
    text-align: center;
}
.text-left {
    text-align: left;
}
.text-right {
    text-align: right;
}

.mb-4 {
    margin-bottom: var(--space-4);
}
.mb-6 {
    margin-bottom: var(--space-6);
}
.mb-8 {
    margin-bottom: var(--space-8);
}

.mt-4 {
    margin-top: var(--space-4);
}
.mt-6 {
    margin-top: var(--space-6);
}
.mt-8 {
    margin-top: var(--space-8);
}

.hidden {
    display: none;
}
.block {
    display: block;
}
.inline-block {
    display: inline-block;
}
.flex {
    display: flex;
}
.inline-flex {
    display: inline-flex;
}

.items-center {
    align-items: center;
}
.justify-center {
    justify-content: center;
}
.justify-between {
    justify-content: space-between;
}

.w-full {
    width: 100%;
}
.h-full {
    height: 100%;
}

.relative {
    position: relative;
}
.absolute {
    position: absolute;
}

.z-10 {
    z-index: 10;
}
.z-20 {
    z-index: 20;
}
.z-50 {
    z-index: 50;
}

/* Toast Notification Styles */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
}

.toast {
    background: #333;
    color: white;
    padding: 16px 24px;
    border-radius: 8px;
    margin-bottom: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    max-width: 300px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast.show {
    transform: translateX(0);
}

.toast-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 4px;
    font-size: 14px;
}

.toast-message {
    font-size: 12px;
    opacity: 0.9;
    line-height: 1.4;
}

.toast-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0;
    margin-left: 8px;
    font-size: 18px;
    opacity: 0.7;
    flex-shrink: 0;
}

.toast-close:hover {
    opacity: 1;
}