:root {
    --primary-blue: #0072E3;
    --light-blue: #4DA3FF;
    --charcoal: #1F2A44;
    --light-grey: #E5EAF0;
    --white: #FFFFFF;
    --text-color: #1F2A44;
    --transition-speed: 0.3s;
    --container-width: 1200px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--charcoal);
    color: var(--white);
    padding: 8px;
    z-index: 100;
    transition: top var(--transition-speed);
}

.skip-link:focus {
    top: 0;
}

/* Header & Navigation */
.site-header {
    background: var(--white);
    border-bottom: 1px solid var(--light-grey);
    position: sticky;
    top: 0;
    z-index: 90;
    height: 90px;
    display: flex;
    align-items: center;
}

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

.brand-logo {
    max-height: 70px;
    width: auto;
    display: block;
}

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

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.main-nav a {
    text-decoration: none;
    color: var(--charcoal);
    font-weight: 600;
    transition: color var(--transition-speed);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.hamburger-bar {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--charcoal);
    margin: 5px 0;
    transition: var(--transition-speed);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 700;
    text-decoration: none;
    transition: background-color var(--transition-speed), transform 0.2s;
    text-align: center;
    cursor: pointer;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: #005bb5;
}

.btn-secondary {
    background-color: var(--light-grey);
    color: var(--charcoal);
}

.btn-secondary:hover {
    background-color: #d1dce8;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--charcoal) 0%, #121929 100%);
    color: var(--white);
    padding: 4rem 0;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    background: rgba(77, 163, 255, 0.15);
    color: var(--light-blue);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    max-width: 100%;
    overflow-wrap: anywhere;
}

.hero-content h1 {
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 900;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--light-grey);
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-highlights {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.95rem;
    color: var(--light-blue);
    font-weight: 600;
}

.hero-visual-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 2.5rem;
    text-align: center;
}

.hero-illustration {
    color: var(--light-blue);
    margin-bottom: 1.5rem;
}

.hero-visual-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.hero-visual-card p {
    color: var(--light-grey);
    margin: 0;
}

/* Features Section */
.features-section {
    padding: 5rem 0;
    background-color: var(--light-grey);
}

.section-header {
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--charcoal);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: #556075;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    text-align: center;
}

.feature-icon {
    color: var(--primary-blue);
    background: rgba(0, 114, 227, 0.1);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem auto;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    color: var(--charcoal);
}

.feature-card p {
    color: #556075;
    margin: 0;
    font-size: 0.95rem;
}

/* Content Depth Section */
.content-depth-section {
    padding: 5rem 0;
}

.content-prose {
    max-width: 800px;
    margin: 0 auto;
}

.content-prose h2 {
    font-size: 2.25rem;
    color: var(--charcoal);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-prose h3 {
    font-size: 1.5rem;
    color: var(--charcoal);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.content-prose p {
    font-size: 1.05rem;
    color: #334155;
    margin-bottom: 1.5rem;
}

.content-prose ul, .content-prose ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.content-prose li {
    margin-bottom: 0.75rem;
    color: #334155;
}

.faq-list {
    margin-top: 2rem;
}

.faq-item {
    background: var(--light-grey);
    padding: 1.5rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.faq-item h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    color: var(--charcoal);
    font-size: 1.15rem;
}

.faq-item p {
    margin: 0;
    color: #475569;
}

/* Page Hero */
.page-hero {
    background: var(--charcoal);
    color: var(--white);
    padding: 4rem 0;
}

.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.page-hero p {
    color: var(--light-grey);
    font-size: 1.125rem;
    margin: 0;
}

/* Contact Grid */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info-card, .contact-instructions-card {
    background: var(--light-grey);
    padding: 2.5rem;
    border-radius: 8px;
}

.contact-method-item {
    margin-top: 1.5rem;
}

.contact-method-item h3 {
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
    color: var(--charcoal);
}

.highlight-contact {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
}

.method-note {
    display: block;
    font-size: 0.875rem;
    color: #64748b;
    margin-top: 0.25rem;
}

/* CTA Banner Section */
.cta-banner-section {
    background: var(--primary-blue);
    color: var(--white);
    padding: 4rem 0;
}

.cta-banner-section h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.cta-banner-section p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.cta-button-group {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.cta-button-group .btn-secondary {
    background: var(--white);
    color: var(--charcoal);
}

.cta-button-group .btn-secondary:hover {
    background: var(--light-grey);
}

/* Site Footer */
.site-footer {
    background: var(--charcoal);
    color: var(--light-grey);
    padding: 4rem 0 2rem 0;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.footer-logo {
    max-height: 44px;
    width: auto;
    margin-bottom: 1rem;
}

.footer-col h4 {
    color: var(--white);
    margin-top: 0;
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-col a {
    color: var(--light-grey);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.footer-col a:hover {
    color: var(--light-blue);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.875rem;
    color: #94a3b8;
}

/* Mobile Sticky Contact Bar */
.mobile-sticky-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--charcoal);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    z-index: 95;
    padding: 8px 12px;
    box-shadow: 0 -4px 12px rgba(0,0,0,0.15);
}

.sticky-action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--primary-blue);
    color: var(--white);
    text-decoration: none;
    padding: 10px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.95rem;
    white-space: nowrap;
    min-height: 44px;
}

.sticky-action-btn.whatsapp-action {
    background: #25D366;
    color: var(--white);
}

/* Responsive & Mobile Layout Rules */
@media (max-width: 768px) {
    .site-header {
        height: 80px;
    }

    .main-nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem;
        transition: left var(--transition-speed);
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        z-index: 99;
    }

    .main-nav.active {
        left: 0;
    }

    .main-nav ul {
        flex-direction: column;
        width: 100%;
        gap: 1.5rem;
    }

    .main-nav ul li a {
        font-size: 1.25rem;
        display: block;
        padding: 0.5rem 0;
    }

    .nav-cta-container {
        width: 100%;
        margin-top: 2rem;
    }

    .nav-call-btn {
        width: 100%;
    }

    .nav-toggle {
        display: block;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .hero-actions .btn {
        width: 100%;
        white-space: nowrap;
    }

    .cta-button-group {
        flex-direction: column;
    }

    .cta-button-group .btn {
        width: 100%;
        white-space: nowrap;
    }

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

    .mobile-sticky-bar {
        display: flex;
        gap: 10px;
    }

    body {
        padding-bottom: 70px; /* Account for sticky bar */
    }
}