/* CSS Variables */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --text: #1e293b;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --background: #ffffff;
    --background-alt: #f8fafc;
    --border: #e2e8f0;
    --accent: #06b6d4;
    --success: #10b981;
    --gradient-start: #2563eb;
    --gradient-end: #06b6d4;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--background);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--secondary);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: 1.25rem; }

p {
    color: var(--text-light);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

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

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

.btn-full {
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.3s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 12px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    text-decoration: none;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.btn-nav {
    background: var(--secondary);
    color: white !important;
    padding: 10px 20px;
    border-radius: 6px;
}

.btn-nav:hover {
    background: var(--primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--secondary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(180deg, var(--background-alt) 0%, var(--background) 100%);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    margin-bottom: 24px;
}

.highlight {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 32px;
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: flex-end;
}

.data-viz {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    height: 300px;
    padding: 30px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
}

.viz-bar {
    width: 40px;
    height: var(--height);
    background: linear-gradient(180deg, var(--gradient-start), var(--gradient-end));
    border-radius: 8px 8px 4px 4px;
    animation: barGrow 1s ease-out forwards;
    transform-origin: bottom;
}

@keyframes barGrow {
    from {
        transform: scaleY(0);
    }
    to {
        transform: scaleY(1);
    }
}

.viz-bar:nth-child(1) { animation-delay: 0.1s; }
.viz-bar:nth-child(2) { animation-delay: 0.2s; }
.viz-bar:nth-child(3) { animation-delay: 0.3s; }
.viz-bar:nth-child(4) { animation-delay: 0.4s; }
.viz-bar:nth-child(5) { animation-delay: 0.5s; }
.viz-bar:nth-child(6) { animation-delay: 0.6s; }

/* Credentials Section */
.credentials {
    padding: 60px 0;
    background: var(--secondary);
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.credential-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.credential-number {
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.credential-label {
    font-size: 0.9rem;
    color: var(--text-lighter);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Services Section */
.services {
    padding: 100px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    padding: 32px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.service-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    color: var(--primary);
}

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

.service-card h3 {
    margin-bottom: 12px;
}

.service-card > p {
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.service-features {
    list-style: none;
    font-size: 0.9rem;
}

.service-features li {
    padding: 8px 0;
    color: var(--text-light);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
}

/* Expertise Section */
.expertise {
    padding: 100px 0;
    background: var(--background-alt);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.expertise-category {
    background: white;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    opacity: 0;
    transform: translateY(20px);
}

.expertise-category.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.expertise-category h3 {
    margin-bottom: 16px;
    font-size: 1rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-tag {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Industries Section */
.industries {
    padding: 100px 0;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.industry-card {
    padding: 32px;
    background: linear-gradient(135deg, var(--secondary) 0%, #1e3a5f 100%);
    border-radius: 12px;
    color: white;
    opacity: 0;
    transform: translateY(20px);
}

.industry-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.industry-card h3 {
    color: white;
    margin-bottom: 12px;
}

.industry-card p {
    color: var(--text-lighter);
}

/* Approach Section */
.approach {
    padding: 100px 0;
    background: var(--background-alt);
}

.approach-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.approach-step {
    text-align: center;
    padding: 24px;
    opacity: 0;
    transform: translateY(20px);
}

.approach-step.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.step-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.approach-step h3 {
    margin-bottom: 12px;
}

/* Results Section */
.results {
    padding: 100px 0;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.result-card {
    text-align: center;
    padding: 32px 24px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    opacity: 0;
    transform: translateY(20px);
}

.result-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.result-metric {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.result-description {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background: var(--secondary);
}

.contact-content-centered {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content-centered h2 {
    color: white;
    margin-bottom: 20px;
}

.contact-content-centered p {
    color: var(--text-lighter);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.1rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    color: white;
    margin-bottom: 20px;
}

.contact-info p {
    color: var(--text-lighter);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.2s ease;
}

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

.contact-link svg {
    width: 24px;
    height: 24px;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 12px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

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

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

/* Footer */
.footer {
    padding: 40px 0;
    background: #070d18;
}

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

.footer-content p {
    color: var(--text-lighter);
    font-size: 0.9rem;
}

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

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

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

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

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

@media (max-width: 768px) {
    .navbar .container {
        position: relative;
    }

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

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        border-radius: 0 0 12px 12px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
    }

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

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin: 0 auto 32px;
    }

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

    .hero-visual {
        display: none;
    }

    .credentials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

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

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

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

    .approach-steps {
        grid-template-columns: 1fr;
    }

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

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

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .credentials-grid {
        grid-template-columns: 1fr;
    }

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

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

    .btn {
        width: 100%;
    }

    .contact-form {
        padding: 24px;
    }
}