/*
Theme Name: NexGen Biotech
Theme URI: https://nxgbiotech.com
Author: NexGen Biotech
Description: Custom theme for NexGen Biotech - PCR Assays & Extraction Reagents
Version: 1.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: nexgen-biotech
*/

:root {
    --color-primary: #0a2540;
    --color-secondary: #00d4aa;
    --color-accent: #635bff;
    --color-light: #f6f9fc;
    --color-text: #425466;
    --color-text-light: #8898aa;
    --color-white: #ffffff;
    --color-warm: #ff6b4a;
    --font-display: 'Instrument Serif', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 4%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--color-primary);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--color-primary);
    white-space: nowrap;
}

.logo-text span {
    color: var(--color-primary);
    font-weight: 400;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-primary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 0.6rem 1.25rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    background: #0d3050;
    transform: translateY(-1px);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu span {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 8rem 4% 4rem;
    background: linear-gradient(135deg, #e0f7fa 0%, #e8f5e9 25%, #f3e5f5 50%, #e3f2fd 75%, #e0f7fa 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    overflow: hidden;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.virus-particle {
    position: absolute;
    opacity: 0.15;
    animation: floatVirus 10s ease-in-out infinite;
    pointer-events: none;
}

.virus-particle svg {
    width: 100%;
    height: 100%;
}

.virus-1 { width: 80px; height: 80px; left: 5%; top: 15%; color: #00d4aa; animation-delay: 0s; }
.virus-2 { width: 50px; height: 50px; left: 18%; top: 60%; color: #635bff; animation-delay: -1.5s; opacity: 0.12; }
.virus-3 { width: 100px; height: 100px; right: 8%; top: 8%; color: #ff6b9d; animation-delay: -3s; opacity: 0.1; }
.virus-4 { width: 40px; height: 40px; right: 25%; bottom: 20%; color: #00d4aa; animation-delay: -4.5s; opacity: 0.1; }
.virus-5 { width: 60px; height: 60px; left: 35%; top: 5%; color: #635bff; animation-delay: -2s; opacity: 0.08; }
.virus-6 { width: 70px; height: 70px; left: 55%; bottom: 12%; color: #ff6b9d; animation-delay: -5s; opacity: 0.12; }
.virus-7 { width: 45px; height: 45px; left: 8%; bottom: 25%; color: #ffd93d; animation-delay: -3.5s; opacity: 0.1; }
.virus-8 { width: 90px; height: 90px; right: 12%; top: 45%; color: #00d4aa; animation-delay: -1s; opacity: 0.08; }
.virus-9 { width: 35px; height: 35px; left: 45%; top: 70%; color: #635bff; animation-delay: -6s; opacity: 0.15; }
.virus-10 { width: 55px; height: 55px; right: 35%; top: 20%; color: #ff6b9d; animation-delay: -2.5s; opacity: 0.1; }

@keyframes floatVirus {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-15px) rotate(90deg); }
    50% { transform: translateY(-25px) rotate(180deg); }
    75% { transform: translateY(-10px) rotate(270deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(180deg); }
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: blobMove 20s ease-in-out infinite;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #00d4aa, #00b894);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.blob-2 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #635bff, #a29bfe);
    bottom: -50px;
    left: -100px;
    animation-delay: -7s;
}

.blob-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #ff6b9d, #ffd93d);
    top: 50%;
    right: 20%;
    animation-delay: -14s;
}

@keyframes blobMove {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 30px) scale(1.02); }
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--color-primary);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero h1 em {
    font-style: italic;
    color: var(--color-secondary);
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: 2rem;
    max-width: 600px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    font-size: 1rem;
}

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

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

.btn-primary:hover {
    background: #0d3050;
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(10, 37, 64, 0.3);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

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

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

/* Stats Bar */
.stats-bar {
    background: var(--color-primary);
    padding: 3rem 4%;
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    color: var(--color-white);
}

.stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
    color: var(--color-secondary);
}

.stat-item h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 0.25rem;
}

.stat-item p {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Products Section */
.products {
    padding: 6rem 4%;
    background: var(--color-light);
}

.extraction-section {
    background: var(--color-white);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    color: var(--color-primary);
    margin-bottom: 1rem;
    font-weight: 400;
}

.section-header p {
    color: var(--color-text);
    font-size: 1.1rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.assays-grid {
    grid-template-columns: repeat(4, 1fr);
    max-width: 1200px;
}

.extraction-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
}

.product-card {
    background: var(--color-white);
    border-radius: 20px;
    padding: 2rem;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(10, 37, 64, 0.1);
}

.product-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.product-icon svg {
    width: 30px;
    height: 30px;
    color: white;
}

.product-card h3 {
    font-family: var(--font-display);
    font-size: 1.35rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    font-weight: 400;
}

.product-card p {
    color: var(--color-text);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.product-feature {
    background: var(--color-light);
    color: var(--color-text);
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-secondary);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.product-link svg {
    width: 16px;
    height: 16px;
    transition: var(--transition);
}

.product-link:hover {
    color: var(--color-accent);
}

.product-link:hover svg {
    transform: translateX(4px);
}

/* Services Section */
.services-section {
    padding: 8rem 4%;
    background: var(--color-white);
}

.services-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.service-block {
    background: var(--color-light);
    border-radius: 24px;
    padding: 2.5rem;
    transition: var(--transition);
}

.service-block:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(10, 37, 64, 0.1);
}

.service-block-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-block-icon svg {
    width: 35px;
    height: 35px;
    color: white;
}

.service-block h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    font-weight: 400;
}

.service-block > .service-block-content > p {
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.service-list-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text);
    font-weight: 500;
}

.service-list-item svg {
    width: 20px;
    height: 20px;
    color: var(--color-secondary);
    flex-shrink: 0;
}

/* Why Choose Section */
.why-choose {
    padding: 6rem 4%;
    background: var(--color-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(10, 37, 64, 0.1);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--color-light);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    color: var(--color-secondary);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    font-weight: 400;
}

.feature-card p {
    color: var(--color-text);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 6rem 4%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #0d3050 100%);
}

.cta-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.cta-container.single-cta {
    grid-template-columns: 1fr;
    max-width: 600px;
}

.cta-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
}

.cta-card.featured {
    background: var(--color-secondary);
}

.cta-card h3 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--color-white);
    margin-bottom: 1rem;
    font-weight: 400;
}

.cta-card p {
    color: rgba(255,255,255,0.9);
    margin-bottom: 1.5rem;
}

/* Footer */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 4rem 4% 2rem;
}

.footer-main {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 1rem;
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.25rem;
    color: var(--color-white);
}

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

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

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-contact {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-contact span {
    color: rgba(255,255,255,0.7);
}

.footer-contact .separator {
    color: rgba(255,255,255,0.3);
}

.footer-contact a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-contact a:hover {
    color: var(--color-white);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
}

.footer-social svg {
    width: 20px;
    height: 20px;
    color: var(--color-white);
}

/* Responsive */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .footer-main {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu {
        display: flex;
    }

    .hero {
        padding-top: 6rem;
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .assays-grid {
        grid-template-columns: 1fr;
    }

    .services-container {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .cta-container {
        grid-template-columns: 1fr;
    }

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
    }
}