/* CSS Variables */
:root {
    --primary-blue: #0056b3; /* Deep blue */
    --secondary-blue: #4dabf7; /* Lighter blue */
    --accent-blue: #1a7fd0;
    --white: #ffffff;
    --off-white: #f8f9fa;
    --gray-100: #f1f3f5;
    --gray-200: #e9ecef;
    --gray-600: #868e96;
    --gray-800: #343a40;
    --text-dark: #212529;
    --text-light: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p { margin-bottom: 1rem; }

a { color: var(--primary-blue); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-blue); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--text-light);
    border-color: var(--primary-blue);
}

.btn-primary:hover {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

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

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

.btn-block {
    display: block;
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 15px 0;
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: var(--gray-800);
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-blue);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--gray-800);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, var(--off-white) 0%, var(--white) 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    color: var(--primary-blue);
    font-size: 4rem;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.hero-tagline {
    color: var(--gray-800);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 15px;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-metrics {
    display: flex;
    gap: 40px;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
    flex-wrap: wrap;
}

.metric {
    text-align: center;
}

.metric-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.metric-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 5px;
}

.hero-visual {
    position: relative;
}

.ai-agent-diagram {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 400px;
    margin: 0 auto;
    background: var(--white);
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.agent-icon {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 10px;
}

.agent-label {
    text-align: center;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--gray-800);
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--white);
}

.section-title {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.agents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-bottom: 4rem;
}

.agent-card {
    background: var(--off-white);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.agent-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-blue);
}

.agent-icon-large {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.agent-card h3 {
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
}

.agent-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.5;
}

.how-it-works {
    background: var(--off-white);
    padding: 40px;
    border-radius: 16px;
}

.how-it-works h3 {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: 2rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step {
    text-align: center;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    color: var(--white);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.step h4 {
    color: var(--gray-800);
    margin-bottom: 0.75rem;
}

.step p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* Services Section */
.services {
    padding: 100px 0;
    background: var(--gray-100);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 4px solid var(--primary-blue);
}

.service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.service-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

/* Results Section */
.results {
    padding: 100px 0;
    background: var(--white);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 3rem;
}

.result-card {
    text-align: center;
    padding: 30px;
    background: var(--off-white);
    border-radius: 12px;
    border: 2px solid var(--secondary-blue);
}

.result-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.result-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 1rem;
}

.lead-volume {
    background: var(--off-white);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    border: 2px dashed var(--secondary-blue);
}

.lead-volume h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    color: var(--white);
}

.contact .section-title,
.contact .section-subtitle {
    color: var(--white);
}

.contact .section-subtitle {
    opacity: 0.9;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    margin-top: 3rem;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.contact-list {
    list-style: none;
    margin-top: 2rem;
}

.contact-list li {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--gray-800);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

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

/* Footer */
.footer {
    background: var(--gray-800);
    color: var(--gray-200);
    padding: 40px 0;
    text-align: center;
}

.footer-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        gap: 15px;
        text-align: center;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 120px 0 60px;
        min-height: auto;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-tagline {
        font-size: 1.25rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-metrics {
        justify-content: center;
        text-align: center;
    }
    
    .ai-agent-diagram {
        grid-template-columns: repeat(2, 1fr);
        max-width: 300px;
    }
    
    h2 { font-size: 1.75rem; }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .ai-agent-diagram {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-metrics {
        flex-direction: column;
        gap: 20px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
}