:root {
    --primary: #2563EB; /* Vibrant Blue */
    --primary-dark: #1D4ED8;
    --secondary: #1E293B; /* Slate 800 */
    --dark-bg: #111827; /* Gray 900 */
    --light-bg: #F3F4F6; /* Gray 100 */
    --text-main: #1F2937; /* Gray 800 */
    --text-light: #9CA3AF; /* Gray 400 */
    --white: #ffffff;
    --success: #10B981;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
}

/* Utility Classes */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    font-size: 1rem;
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background-color: rgba(255,255,255,0.1);
    border-color: var(--white);
}

/* Header */
nav {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #E5E7EB;
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--dark-bg);
    gap: 0.5rem;
}

.logo-icon {
    background: var(--primary);
    color: white;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

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

.nav-cta {
    background: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 99px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background 0.2s;
}

.nav-cta:hover { background-color: var(--primary-dark); }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-main);
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(17, 24, 39, 0.85), rgba(17, 24, 39, 0.95)), url('https://images.unsplash.com/photo-1542013936693-884638332954?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 6rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 10;
}

.hero h1 {
    font-weight: 800;
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.trust-badges {
    display: flex;
    gap: 2rem;
    color: var(--success);
    font-weight: 500;
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.trust-badges i { margin-right: 0.5rem; }

/* Stats Bar */
.stats-bar {
    background: var(--primary);
    color: white;
    padding: 2.5rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-item p {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.9;
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 1rem;
}

.section-header p {
    color: #6B7280;
    font-size: 1.125rem;
}

/* Services Grid */
.services-section {
    padding: 5rem 0;
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    border: 1px solid #E5E7EB;
    border-radius: 1rem;
    padding: 2.5rem;
    transition: all 0.3s ease;
}

.service-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
    transform: translateY(-5px);
}

.icon-box {
    background-color: #EFF6FF;
    color: var(--primary);
    width: 64px;
    height: 64px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-bg);
}

.service-card p {
    color: #4B5563;
    margin-bottom: 1.5rem;
}

.service-card ul {
    list-style: none;
}

.service-card ul li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    color: #4B5563;
}

.service-card ul li i {
    color: var(--success);
    margin-right: 0.75rem;
}

/* AI Assessment Form */
.assessment-section {
    background: var(--light-bg);
    padding: 5rem 0;
}

.assessment-container {
    background: white;
    border-radius: 1.5rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    padding: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.ai-badge {
    display: inline-flex;
    align-items: center;
    background: #EEF2FF;
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 99px;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.form-full { grid-column: 1 / -1; }

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-bg);
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid #D1D5DB;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}

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

.checkbox-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.checkbox-card {
    border: 1px solid #D1D5DB;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
    user-select: none;
}

.checkbox-card:hover {
    border-color: var(--primary);
    background: #EFF6FF;
}

.checkbox-card input {
    margin-right: 0.5rem;
}

/* Footer */
footer {
    background: var(--dark-bg);
    color: #9CA3AF;
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    color: white;
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

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

.footer-links li { margin-bottom: 0.75rem; }
.footer-links a { color: #9CA3AF; text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: white; }

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-item i { color: var(--primary); margin-top: 0.25rem; }

.copyright {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    font-size: 0.875rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
    .form-grid { grid-template-columns: 1fr; }
    
    .mobile-menu-btn { display: block; }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        z-index: 100;
        gap: 1rem;
        align-items: flex-start;
    }

    .nav-links.active { display: flex; }
    
    .nav-cta { display: none; } /* On mobile, usually show just hamburger. Or move CTA into menu */
    
    /* Move CTA into mobile menu if needed, for now keep simple */
    .nav-content { justify-content: space-between; }
    
    .assessment-container { padding: 1.5rem; }
}