/* Modern, clean, and professional CSS */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #1f2937;
    --background-light: #f3f4f6;
    --text-main: #374151;
    --accent-red: #ef4444;
    --white: #ffffff;
    --border-color: #e5e7eb;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

body {
    background-color: var(--white);
    color: var(--text-main);
    line-height: 1.6;
}

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

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

.mt-2 {
    margin-top: 0.5rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.py-5 {
    padding: 3rem 0;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2);
}

.btn-large {
    font-size: 1.125rem;
    padding: 16px 32px;
}

.btn-accent {
    background-color: var(--accent-red);
    color: var(--white);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(239, 68, 68, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
    }
}

/* Header */
header {
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

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

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

.header-cta {
    display: flex;
    align-items: center;
    gap: 15px;
}

.phone-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-decoration: none;
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--secondary-color);
}

/* Hero Section */
.hero {
    background-color: var(--background-light);
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-main);
    max-width: 800px;
    margin: 0 auto 30px auto;
}

.trust-badges {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--white);
    padding: 10px 20px;
    border-radius: 50px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    font-weight: 500;
    font-size: 0.9rem;
}

/* Sections */
.section-title {
    font-size: 2.25rem;
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 40px;
}

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

.card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.card h3 {
    font-size: 1.25rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* Pricing/Plans */
.pricing-card {
    text-align: center;
    padding: 50px 30px;
    border-radius: 12px;
    background: var(--white);
    border: 1px solid var(--border-color);
    position: relative;
}

.pricing-card.popular {
    border: 2px solid var(--primary-color);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.1);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: var(--white);
    padding: 4px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin: 20px 0;
}

.price span {
    font-size: 1rem;
    color: var(--text-main);
}

.pricing-features {
    list-style: none;
    margin: 30px 0;
    text-align: left;
}

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 60px 0 30px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-col p {
    color: #9ca3af;
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--white);
}

.disclaimer {
    border-top: 1px solid #374151;
    padding-top: 30px;
    text-align: center;
    font-size: 0.85rem;
    color: #9ca3af;
}

/* Call to Action Banner */
.cta-banner {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 60px 0;
}

.cta-banner h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* Hide by default on mobile, can be toggled via JS */
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    .header-cta .phone-number,
    .d-mobile-none {
        display: none !important;
    }

    .logo {
        font-size: 1.25rem;
        gap: 8px;
    }

    .hero h1 {
        font-size: 2rem;
    }
}

/* Guided Diagnostics */
.brand-selection-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.brand-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 20px 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--secondary-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    min-width: 140px;
}

.brand-card i {
    font-size: 2rem;
    color: var(--primary-color);
}

.brand-card:hover,
.brand-card.active {
    border-color: var(--primary-color);
    background: #eff6ff;
    transform: translateY(-3px);
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.1);
}

.diag-step {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 500;
    display: flex;
    align-items: center;
}

.diag-step:last-child {
    border-bottom: none;
}

.diag-step i {
    margin-right: 15px;
    width: 20px;
    text-align: center;
}

.diag-step .fa-circle-notch {
    color: var(--primary-color);
}

.diag-step .fa-check-circle {
    color: green;
}

.diag-step .fa-triangle-exclamation {
    color: var(--accent-red);
}

.test-result {
    padding: 15px;
    border-radius: 5px;
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.6;
}

.result-error {
    background-color: #fef2f2;
    color: #b91c1c;
    border: 1px solid #f87171;
}

.result-error a {
    color: var(--white);
    text-decoration: none;
    font-weight: bold;
}