/* ==========================================================================
   HNF PLUS — Modern B2B Strategic Growth Theme
   ========================================================================== */

/* 1. Global Variables & Color Palette */
:root {
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
    --secondary-color: #0f172a;
    --accent-color: #0056b3;
    --bg-light: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    --max-width: 1200px;
    --radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.12);
}

/* 2. Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-main);
    background-color: #ffffff;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 3. Navigation Header */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    z-index: 1000;
}

.logo a {
    font-size: 1.5rem;
    color: var(--secondary-color);
    letter-spacing: -0.5px;
}

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

.main-nav ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 1.75rem;
}

.main-nav a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-main);
    transition: color 0.2s ease;
}

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

.nav-cta {
    background-color: var(--primary-color);
    color: #ffffff !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius);
    transition: background-color 0.2s ease, transform 0.2s ease !important;
}

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

/* 4. Hero Section */
.hero-section {
    text-align: center;
    padding: 5rem 1.5rem 4rem 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.hero-section h1 {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--secondary-color);
    margin-bottom: 1.25rem;
    letter-spacing: -0.5px;
}

.hero-section p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2.25rem;
    line-height: 1.7;
}

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

/* Buttons */
.btn-primary, .btn-secondary, .btn-submit {
    display: inline-block;
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--bg-light);
    color: var(--secondary-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #e2e8f0;
    transform: translateY(-2px);
}

.btn-submit {
    width: 100%;
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 1rem;
    font-size: 1.05rem;
}

.btn-submit:hover {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-md);
}

/* 5. Services & Grid Cards */
.services-section, .workflow-section {
    padding: 4.5rem 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.workflow-section {
    background-color: var(--bg-light);
    border-radius: 12px;
}

.services-section h2, .workflow-section h2 {
    text-align: center;
    font-size: 2.1rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.75rem;
    margin-top: 2rem;
}

.service-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: #cbd5e1;
}

.service-card h3 {
    font-size: 1.25rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.service-card p {
    color: var(--text-light);
    font-size: 0.98rem;
    line-height: 1.6;
}

/* 6. Enterprise Security & NDA Section */
.security-section {
    background-color: #f8fafc;
    padding: 4.5rem 1.5rem;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.security-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 2.5rem auto;
}

.security-header h2 {
    font-size: 2.1rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.security-header p {
    color: var(--text-light);
    font-size: 1.05rem;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.75rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.security-card {
    background: #ffffff;
    padding: 2rem;
    border-radius: var(--radius);
    border-top: 4px solid var(--accent-color);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.security-card h3 {
    font-size: 1.15rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.security-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* 7. Free Sample Pipeline Audit Section */
.audit-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #ffffff;
    padding: 5rem 1.5rem;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.audit-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.badge {
    background-color: rgba(13, 110, 253, 0.2);
    color: #60a5fa;
    border: 1px solid #2563eb;
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 1rem;
}

.audit-content h2 {
    font-size: 2.25rem;
    color: #ffffff;
    margin-bottom: 1rem;
    line-height: 1.25;
}

.audit-content p {
    color: #94a3b8;
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.audit-highlights {
    list-style: none;
    padding: 0;
}

.audit-highlights li {
    font-size: 1rem;
    color: #e2e8f0;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.audit-form-wrapper .contact-form {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
}

/* 8. Contact Section & Forms */
.contact-section {
    padding: 5rem 1.5rem;
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.contact-section h2 {
    font-size: 2.1rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.contact-form {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    text-align: left;
    margin-top: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    font-size: 0.98rem;
    font-family: var(--font-main);
    color: var(--text-main);
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

.form-group textarea {
    resize: vertical;
}

/* 9. ROI Calculator & Tech Compatibility */
.calculator-section {
    padding: 4.5rem 1.5rem;
    background-color: #ffffff;
}

.calculator-container {
    max-width: 1000px;
    margin: 0 auto;
}

.calculator-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.calculator-card {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2.5rem;
    align-items: center;
    box-shadow: var(--shadow-md);
}

.calc-group {
    margin-bottom: 1.75rem;
}

.calc-group label {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--secondary-color);
}

.calc-val {
    color: var(--primary-color);
    font-weight: 700;
}

.calc-group input[type="range"] {
    width: 100%;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.calculator-output {
    background: var(--secondary-color);
    color: #ffffff;
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
}

.calculator-output h3 {
    font-size: 1.1rem;
    color: #94a3b8;
    margin-bottom: 0.5rem;
}

.roi-number {
    font-size: 2.75rem;
    font-weight: 800;
    color: #60a5fa;
    margin: 0.5rem 0;
}

.roi-subtext {
    font-size: 0.85rem;
    color: #cbd5e1;
    line-height: 1.5;
}

/* Compatibility Badges Styles */
.compatibility-section {
    padding: 3.5rem 1.5rem;
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.compatibility-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.compatibility-container h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.compatibility-container p {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 0.98rem;
}

.badge-category h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
    margin-bottom: 0.75rem;
}

.badge-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.85rem;
}

.tech-badge {
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.25rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--secondary-color);
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.tech-badge:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* 10. Global Footer */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 1.5rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    background-color: #ffffff;
}

/* 11. Mobile Responsive Layouts */
@media (max-width: 900px) {
    .audit-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .site-header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .hero-section {
        padding: 3rem 1rem 2.5rem 1rem;
    }

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

    .hero-section p {
        font-size: 1.05rem;
    }

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

    .btn-primary, .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .calculator-card {
        grid-template-columns: 1fr;
        padding: 1.5rem;
    }
}