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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --dark-bg: #0f172a;
    --gray-bg: #f8fafc;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-dark);
    text-decoration: none;
    letter-spacing: -0.5px;
}

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

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

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

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

.dropdown {
    position: relative;
}

.dropdown .arrow {
    font-size: 0.7rem;
    margin-left: 0.25rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-radius: 8px;
    padding: 0.5rem 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s;
    list-style: none;
}

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

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.dropdown-menu a:hover {
    background: var(--gray-bg);
    color: var(--primary-color);
}

.btn-nav {
    background: var(--primary-color);
    color: var(--white) !important;
    padding: 0.6rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-nav:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 8rem 0;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

.btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1.1rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary:hover {
    background: var(--gray-bg);
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 6rem 0;
}

.section-gray {
    background: var(--gray-bg);
}

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

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

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.section-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 1rem;
}

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

/* Value Pillars */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.pillar-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.pillar-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 35px rgba(0,0,0,0.12);
}

.pillar-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.pillar-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.pillar-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-light);
}

/* Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.step-card {
    text-align: center;
}

.step-number {
    width: 70px;
    height: 70px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    margin: 0 auto 1.5rem;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.step-text {
    font-size: 1rem;
    line-height: 1.7;
    opacity: 0.9;
}

/* Engines */
.engines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.engine-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    text-align: center;
    transition: all 0.3s;
    position: relative;
}

.engine-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 35px rgba(0,0,0,0.1);
}

.engine-featured {
    border-color: var(--primary-color);
    box-shadow: 0 5px 25px rgba(37, 99, 235, 0.15);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--white);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.engine-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.engine-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    min-height: 80px;
}

.engine-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.engine-price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-light);
}

/* Diagnostics */
.diagnostics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.diagnostic-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.diagnostic-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 35px rgba(0,0,0,0.12);
}

.diagnostic-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.diagnostic-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.diagnostic-text {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Industries */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.industry-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    text-decoration: none;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.industry-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 35px rgba(0,0,0,0.1);
}

.industry-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.industry-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.industry-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
}

/* CTA Section */
.section-cta {
    background: var(--gradient-1);
    color: var(--white);
}

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

.cta-title {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.cta-text {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

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

.footer-text {
    font-size: 0.95rem;
    opacity: 0.8;
    line-height: 1.6;
}

.footer-heading {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

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

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: all 0.3s;
    font-size: 0.95rem;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
}

/* Page Header */
.page-header {
    background: var(--gradient-2);
    color: var(--white);
    padding: 5rem 0;
    text-align: center;
}

.page-header-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.page-header-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto;
}

/* Feature List */
.feature-list {
    list-style: none;
    margin: 2rem 0;
}

.feature-list li {
    padding: 0.75rem 0 0.75rem 2.5rem;
    position: relative;
    font-size: 1.1rem;
    line-height: 1.6;
}

.feature-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 800;
    font-size: 1.5rem;
}

/* Pain Points */
.pain-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.pain-point {
    background: #fef2f2;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #ef4444;
}

.pain-point h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: #991b1b;
    margin-bottom: 0.5rem;
}

.pain-point p {
    font-size: 0.95rem;
    color: #7f1d1d;
}

/* Outcomes */
.outcomes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.outcome {
    background: #f0fdf4;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--success-color);
}

.outcome h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: #065f46;
    margin-bottom: 0.5rem;
}

.outcome p {
    font-size: 0.95rem;
    color: #047857;
}

/* Content Box */
.content-box {
    background: var(--white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin: 3rem 0;
}

.content-box-gray {
    background: var(--gray-bg);
    padding: 3rem;
    border-radius: 12px;
    margin: 3rem 0;
}

/* Form */
.form-group {
    margin-bottom: 1.5rem;
}

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

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 3rem auto;
}

.faq-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.faq-answer {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-light);
}

/* Two Column Layout */
.two-col-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    align-items: start;
}

/* Responsive */
@media (max-width: 968px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

    .nav-links.active {
        transform: translateX(0);
    }

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

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 1rem;
        margin-top: 0.5rem;
    }

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

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

    .two-col-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 640px) {
    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 4rem 0;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

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

    .btn-lg {
        width: 100%;
    }

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