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

:root {
    /* Color Palette */
    --color-ink: #0F172A;
    --color-cobalt: #0EA5E9;
    --color-teal: #14B8A6;
    --color-light-gray: #E2E8F0;
    --color-white: #FFFFFF;
    --color-signal: #F59E0B;
    
    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-ink);
    background-color: var(--color-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--color-ink);
}

.section-subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: #64748B;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #0284C7;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(14, 165, 233, 0.3);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-ink);
    letter-spacing: 0.05em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-ink);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-cobalt);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

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

.mobile-menu {
    display: none;
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-light-gray);
    padding: var(--spacing-md);
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 999;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu-link {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-ink);
    text-decoration: none;
    padding: 0.75rem;
    border-radius: 0.5rem;
    transition: background-color var(--transition-fast);
}

.mobile-menu-link:hover {
    background-color: var(--color-light-gray);
}

/* Hero Section */
.hero {
    padding-top: calc(73px + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, #F8FAFC 0%, #E2E8F0 100%);
}

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

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--color-ink);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.6;
    color: #475569;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.hero-visual {
    max-width: 800px;
    margin: 0 auto;
}

.hero-visual-placeholder {
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.1);
}

.hero-visual-placeholder svg {
    width: 100%;
    height: auto;
    display: block;
}

/* Trust Strip */
.trust-strip {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-ink);
    color: var(--color-white);
}

.trust-statement {
    text-align: center;
    font-size: 1rem;
    color: var(--color-light-gray);
}

/* Three Pillars */
.pillars {
    padding: var(--spacing-xl) 0;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.pillar-card {
    background-color: var(--color-white);
    border: 2px solid var(--color-light-gray);
    border-radius: 1rem;
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.pillar-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(14, 165, 233, 0.15);
    border-color: var(--color-cobalt);
}

.pillar-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
}

.pillar-icon svg {
    width: 100%;
    height: 100%;
}

.pillar-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-ink);
}

.pillar-description {
    font-size: 1rem;
    color: #64748B;
    margin-bottom: var(--spacing-md);
}

.pillar-services {
    list-style: none;
}

.pillar-services li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #475569;
}

.pillar-services li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-teal);
    font-weight: 600;
}

/* Use Cases Grid */
.use-cases {
    padding: var(--spacing-xl) 0;
    background-color: #F8FAFC;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.use-case-card {
    background-color: var(--color-white);
    border-radius: 0.75rem;
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-light-gray);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
}

.use-case-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-ink);
}

.use-case-problem,
.use-case-value,
.use-case-deliverables {
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.use-case-problem {
    color: #64748B;
}

.use-case-value {
    color: #475569;
}

.use-case-deliverables {
    color: #334155;
}

/* Case Studies */
.case-studies {
    padding: var(--spacing-xl) 0;
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.case-study-card {
    background-color: var(--color-white);
    border: 2px solid var(--color-light-gray);
    border-radius: 1rem;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.case-study-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.15);
    border-color: var(--color-teal);
}

.case-study-image {
    width: 100%;
    height: 200px;
    background-color: var(--color-ink);
}

.case-study-image svg {
    width: 100%;
    height: 100%;
}

.case-study-title {
    font-size: 1.5rem;
    margin: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-ink);
}

.case-study-description {
    font-size: 1rem;
    color: #64748B;
    margin: 0 var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.case-study-metrics {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md);
    background-color: #F8FAFC;
    margin: 0 var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: 0.5rem;
}

.metric {
    text-align: center;
}

.metric-value {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-cobalt);
    margin-bottom: 0.25rem;
}

.metric-label {
    display: block;
    font-size: 0.875rem;
    color: #64748B;
}

.case-study-cta {
    display: block;
    margin: 0 var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--color-teal);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.case-study-cta:hover {
    color: var(--color-cobalt);
}

/* Process */
.process {
    padding: var(--spacing-xl) 0;
    background-color: #F8FAFC;
}

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

.process-step {
    text-align: center;
    position: relative;
}

.process-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-light-gray);
    margin-bottom: var(--spacing-sm);
}

.process-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
}

.process-icon svg {
    width: 100%;
    height: 100%;
}

.process-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-ink);
}

.process-description {
    font-size: 1rem;
    color: #64748B;
    line-height: 1.6;
}

/* Tech Stack Ribbon */
.tech-stack {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-ink);
    color: var(--color-white);
}

.tech-stack .section-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.tech-ribbon {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.tech-item {
    padding: 0.75rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 2rem;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-light-gray);
    transition: all var(--transition-fast);
}

.tech-item:hover {
    background-color: rgba(14, 165, 233, 0.2);
    border-color: var(--color-cobalt);
    transform: translateY(-2px);
}

/* Compliance */
.compliance {
    padding: var(--spacing-lg) 0;
    background-color: #F8FAFC;
}

.compliance-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.compliance-text {
    font-size: 1.125rem;
    color: #475569;
    line-height: 1.8;
}

/* FAQ */
.faq {
    padding: var(--spacing-xl) 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.faq-item {
    background-color: #F8FAFC;
    border-radius: 0.75rem;
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.faq-item:hover {
    background-color: var(--color-white);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
}

.faq-question {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-ink);
}

.faq-answer {
    font-size: 1rem;
    color: #64748B;
    line-height: 1.7;
}

/* Contact Section */
.contact {
    padding: var(--spacing-xl) 0;
    background-color: #F8FAFC;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-info-item h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #64748B;
    margin-bottom: 0.5rem;
}

.contact-info-item a,
.contact-info-item p {
    font-size: 1.125rem;
    color: var(--color-ink);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-info-item a:hover {
    color: var(--color-cobalt);
}

/* Contact Form */
.contact-form {
    background-color: var(--color-white);
    border-radius: 1rem;
    padding: var(--spacing-lg);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-light-gray);
    border-radius: 0.5rem;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-cobalt);
}

.form-group textarea {
    resize: vertical;
}

/* Footer */
.footer {
    background-color: var(--color-ink);
    color: var(--color-light-gray);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-brand .logo-text {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-teal);
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    font-size: 0.95rem;
    color: var(--color-light-gray);
    line-height: 1.6;
}

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

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    display: block;
    font-size: 0.95rem;
    color: var(--color-light-gray);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(226, 232, 240, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: #94A3B8;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-delay-1 {
    animation: fadeIn 0.8s ease 0.2s forwards;
    opacity: 0;
}

.fade-in-delay-2 {
    animation: fadeIn 0.8s ease 0.4s forwards;
    opacity: 0;
}

.fade-in-delay-3 {
    animation: fadeIn 0.8s ease 0.6s forwards;
    opacity: 0;
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding-top: calc(73px + var(--spacing-lg));
        padding-bottom: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .pillars-grid,
    .use-cases-grid,
    .case-studies-grid,
    .process-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .case-study-metrics {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}