/* ===== CSS Variables - Alytic Brand Colors ===== */
:root {
    /* Brand Colors from Alytic Logo */
    --color-primary-green: #4dd599;
    --color-primary-teal: #50b5c8;
    --color-primary-blue: #4a9cc8;
    --color-accent-orange: #ff6633;

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

    /* Semantic Colors */
    --color-background: #ffffff;
    --color-text: var(--color-gray-900);
    --color-text-muted: var(--color-gray-600);
    --color-border: var(--color-gray-200);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;

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

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--space-md);
}

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

a:hover {
    color: var(--color-primary-blue);
}

ul {
    list-style: none;
}

/* ===== Layout ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

section {
    padding: var(--space-3xl) 0;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-background);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
}

.nav-logo .logo {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--color-primary-teal);
}

.nav-cta {
    background: linear-gradient(135deg, var(--color-primary-green), var(--color-primary-teal));
    color: white !important;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-md);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== Hero Section ===== */
.hero {
    padding-top: calc(var(--space-3xl) + 80px);
    padding-bottom: var(--space-3xl);
    background: linear-gradient(135deg, rgba(77, 213, 153, 0.05), rgba(80, 181, 200, 0.05));
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--color-primary-green), var(--color-primary-teal), var(--color-primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-green), var(--color-primary-teal));
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    border-color: var(--color-primary-teal);
    color: var(--color-primary-teal);
}

/* ===== Section Titles ===== */
.section-title {
    text-align: center;
    margin-bottom: var(--space-md);
    font-size: 2.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
}

/* ===== Badges ===== */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-production {
    background: rgba(77, 213, 153, 0.1);
    color: #059669;
}

.badge-development {
    background: rgba(80, 181, 200, 0.1);
    color: #0284c7;
}

.badge-opensource {
    background: rgba(255, 102, 51, 0.1);
    color: #ea580c;
}

/* ===== Products Section ===== */
.products {
    background: var(--color-gray-50);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--space-xl);
}

.product-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-md);
}

.product-tagline {
    color: var(--color-primary-teal);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
}

.product-description {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.feature-list {
    margin-bottom: var(--space-lg);
}

.feature-list li {
    padding-left: var(--space-lg);
    position: relative;
    margin-bottom: var(--space-sm);
    color: var(--color-text-muted);
}

.feature-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary-green);
    font-weight: bold;
}

.product-footer {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tech-stack {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.product-link {
    color: var(--color-primary-teal);
    font-weight: 600;
}

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

/* ===== Open Source Section ===== */
.opensource-grid {
    display: grid;
    gap: var(--space-xl);
}

.opensource-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.opensource-card.featured {
    border: 2px solid var(--color-primary-teal);
}

.opensource-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-md);
}

.opensource-tagline {
    color: var(--color-primary-teal);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
}

.opensource-description {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.code-sample {
    background: var(--color-gray-900);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    overflow-x: auto;
}

.code-sample pre {
    margin: 0;
}

.code-sample code {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-primary-green);
    line-height: 1.6;
}

.opensource-footer {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-md);
}

.opensource-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.product-link.secondary {
    color: var(--color-text-muted);
}

.contribution-list {
    list-style: none;
}

.contribution-list li {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.contribution-list li:last-child {
    border-bottom: none;
}

.contribution-list li strong {
    display: block;
}

.contribution-list li span {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.contribution-list li a {
    font-size: 0.875rem;
    color: var(--color-primary-teal);
    font-weight: 500;
}

/* ===== Services Section ===== */
.services {
    background: var(--color-gray-50);
}

/* Client Logos Section */
.client-logos {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-xl);
    text-align: center;
}

.client-logos h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-xl);
    color: var(--color-text);
}

.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.client-item {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    background: var(--color-gray-50);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.client-item:hover {
    border-color: var(--color-primary-teal);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.client-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    background: linear-gradient(135deg, var(--color-primary-green), var(--color-primary-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.client-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: 0;
}

.experience-highlight {
    background: linear-gradient(135deg, rgba(77, 213, 153, 0.1), rgba(80, 181, 200, 0.1));
    border-left: 4px solid var(--color-primary-teal);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
}

.experience-text {
    font-size: 1.125rem;
    color: var(--color-text);
    margin: 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.service-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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


.service-list li {
    padding-left: var(--space-lg);
    position: relative;
    margin-bottom: var(--space-sm);
    color: var(--color-text-muted);
}

.service-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-primary-teal);
    font-weight: bold;
}

.proven-track {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.track-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

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


.track-item p {
    color: var(--color-text-muted);
    margin: 0;
}

/* ===== About Section ===== */
.about-intro {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text);
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.highlight-item {
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.highlight-item strong {
    display: block;
    font-size: 1.5rem;
    color: var(--color-primary-teal);
    margin-bottom: var(--space-xs);
}

.highlight-item span {
    color: var(--color-text-muted);
}

/* ===== Contact Section ===== */
.contact {
    background: var(--color-gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.contact-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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


.contact-card h3 {
    margin-bottom: var(--space-sm);
}

.contact-card a {
    color: var(--color-primary-teal);
    font-weight: 500;
}

.contact-card p {
    margin: 0;
    color: var(--color-text-muted);
}

/* ===== Footer ===== */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--space-xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-logo .logo {
    height: 40px;
    width: auto;
    margin-bottom: var(--space-md);
    filter: brightness(0) invert(1);
}

.footer-logo p {
    color: var(--color-gray-400);
    margin: 0;
}

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

.footer-column h4 {
    color: white;
    margin-bottom: var(--space-md);
    font-size: 1rem;
}

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

.footer-column li {
    margin-bottom: var(--space-sm);
}

.footer-column a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding-top: var(--space-lg);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-gray-500);
    margin: 0;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .nav-menu {
        gap: var(--space-md);
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    section {
        padding: var(--space-xl) 0;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--space-lg) 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: 999;
    }

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

    .nav-menu li {
        text-align: center;
        padding: var(--space-sm) 0;
    }

    .nav-cta {
        display: inline-block;
        margin: var(--space-sm) auto;
    }
}

@media (max-width: 480px) {
    .hero {
        padding-top: calc(var(--space-xl) + 80px);
    }

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

    .hero-ctas {
        flex-direction: column;
    }

    .container {
        padding: 0 var(--space-md);
    }
}