/* ============================================
   CSS RESET & BASE STYLES
============================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary-blue: #0078D4;
    --secondary-magenta: #E83D84;
    --accent-yellow: #FFB900;
    --neutral-dark: #1A1A1A;
    --neutral-grey: #4A4A4A;
    --light-grey: #FAFBFC;
    --medium-grey: #E8EAED;
    --white: #FFFFFF;
    --text-dark: #1A1A1A;
    --text-light: #666666;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Work Sans', sans-serif;
    --section-padding: 80px 20px;
    --container-max: 1200px;
    --transition-smooth: all 0.3s ease;
}

body { font-family: var(--font-body); color: var(--text-dark); line-height: 1.6; overflow-x: hidden; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 600; line-height: 1.2; color: var(--neutral-dark); }
a { text-decoration: none; color: inherit; transition: var(--transition-smooth); }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; }

/* ============================================
   NAVIGATION
============================================ */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: var(--white); padding: 16px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}
nav .container { display: flex; justify-content: space-between; align-items: center; }
nav .logo img { height: 40px; width: auto; }
nav .nav-menu {
    list-style: none;
    gap: 32px;
    align-items: center;
    display: none;
}
nav .nav-menu a { font-family: var(--font-body); font-weight: 500; font-size: 15px; color: var(--neutral-grey); }
nav .nav-menu a:hover { color: var(--primary-blue); }
nav .nav-menu .nav-cta {
    background: var(--primary-blue); color: var(--white);
    padding: 10px 22px; border-radius: 6px; font-weight: 600;
}
nav .nav-menu .nav-cta:hover { background: #0062a8; color: var(--white); }
@media (min-width: 769px) {
    nav .nav-menu { display: -webkit-flex !important; display: flex !important; flex-direction: row; position: static; background: none; box-shadow: none; padding: 0; }
}
.menu-toggle { display: none; -webkit-flex-direction: column; flex-direction: column; gap: 5px; cursor: pointer; }
.menu-toggle span { display: block; width: 25px; height: 2px; background: var(--neutral-dark); transition: var(--transition-smooth); }

/* ============================================
   HERO
============================================ */
.hero { padding: 140px 20px 80px; background: var(--neutral-dark); text-align: center; }
.hero-content { max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); font-weight: 800; color: var(--white); margin-bottom: 24px; line-height: 1.15; }
.hero p { font-size: clamp(16px, 2vw, 20px); color: rgba(255,255,255,0.80); margin-bottom: 40px; max-width: 620px; margin-left: auto; margin-right: auto; }
.hero-cta {
    display: inline-block; background: var(--primary-blue); color: var(--white);
    padding: 16px 40px; border-radius: 6px; font-family: var(--font-heading);
    font-weight: 600; font-size: 17px; transition: var(--transition-smooth);
}
.hero-cta:hover { background: #0062a8; transform: translateY(-2px); }

/* ============================================
   ABOUT
============================================ */
.about { padding: var(--section-padding); background: var(--light-grey); }
.about-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.about-text h2 { font-size: clamp(28px, 4vw, 38px); margin-bottom: 24px; }
.about-text p { font-size: 16px; color: var(--text-light); margin-bottom: 20px; line-height: 1.8; }
.about-text h4 { font-size: 18px; margin: 28px 0 12px; color: var(--neutral-dark); }
.metrics-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.metric-card {
    background: var(--white); border-radius: 10px; padding: 28px 24px;
    border: 1px solid var(--medium-grey); text-align: center;
}
.metric-number { font-family: var(--font-heading); font-size: 36px; font-weight: 800; color: var(--primary-blue); display: block; }
.metric-label { font-size: 14px; color: var(--text-light); margin-top: 6px; line-height: 1.4; }

/* ============================================
   SERVICES
============================================ */
.services { padding: var(--section-padding); background: var(--white); }
.section-title { text-align: center; margin-bottom: 56px; }
.section-title h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 16px; }
.section-title p { font-size: 17px; color: var(--text-light); max-width: 620px; margin: 0 auto; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.service-card {
    background: var(--light-grey); border-radius: 12px; padding: 36px 28px;
    border: 1px solid var(--medium-grey); transition: var(--transition-smooth);
}
.service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); border-color: var(--primary-blue); }
.service-icon { width: 48px; height: 48px; margin-bottom: 20px; color: var(--primary-blue); }
.service-icon svg { width: 100%; height: 100%; fill: var(--primary-blue); }
.service-card h3 { font-size: 20px; margin-bottom: 12px; color: var(--neutral-dark); }
.service-card p { font-size: 15px; color: var(--text-light); line-height: 1.7; }

/* ============================================
   TRUSTED BY
============================================ */
.trusted-by { padding: 60px 20px; background: var(--white); border-top: 1px solid var(--medium-grey); border-bottom: 1px solid var(--medium-grey); }
.trusted-by .section-title { margin-bottom: 36px; }
.trusted-by .section-title h2 { font-size: 22px; color: var(--text-light); font-weight: 500; }
.logos-grid { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 40px 56px; }
.logo-item { font-family: var(--font-heading); font-size: 18px; font-weight: 700; color: #BBBBBB; letter-spacing: 0.5px; transition: var(--transition-smooth); }
.logo-item:hover { color: var(--primary-blue); }

/* ============================================
   CASE STUDIES
============================================ */
.case-studies { padding: var(--section-padding); background: var(--light-grey); }
.case-studies-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 48px; }
.case-study-card {
    background: var(--white); border-radius: 12px; padding: 36px 32px;
    border: 1px solid var(--medium-grey); transition: var(--transition-smooth);
}
.case-study-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }
.case-study-number { font-family: var(--font-heading); font-size: 13px; font-weight: 700; color: var(--primary-blue); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px; }
.case-study-card h3 { font-size: 20px; margin-bottom: 24px; line-height: 1.3; color: var(--neutral-dark); }
.case-study-block { margin-bottom: 18px; }
.case-study-block-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--primary-blue); margin-bottom: 6px; }
.case-study-block p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ============================================
   TESTIMONIALS
============================================ */
.testimonials { padding: var(--section-padding); background: var(--white); }
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 28px; margin-top: 48px; }
.testimonial-card {
    background: var(--light-grey); border-radius: 12px; padding: 36px 32px;
    border: 1px solid var(--medium-grey); position: relative;
}
.testimonial-card::before {
    content: '\201C'; font-family: var(--font-heading); font-size: 80px;
    color: var(--primary-blue); opacity: 0.15; position: absolute;
    top: 12px; left: 24px; line-height: 1;
}
.testimonial-card p { font-size: 16px; color: var(--neutral-grey); line-height: 1.8; margin-bottom: 28px; font-style: italic; }
.testimonial-author strong { font-family: var(--font-heading); font-size: 16px; font-weight: 700; color: var(--neutral-dark); display: block; }
.testimonial-author span { font-size: 14px; color: var(--text-light); }

/* ============================================
   CONTACT
============================================ */
.contact { padding: var(--section-padding); background: var(--neutral-dark); }
.contact .section-title h2 { color: var(--white); }
.contact .section-title p { color: rgba(255,255,255,0.65); }
.contact-details {
    display: flex; flex-wrap: wrap; justify-content: center;
    gap: 48px; margin-top: 48px;
}
.contact-item { text-align: center; }
.contact-item h4 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--primary-blue); margin-bottom: 10px; }
.contact-item p, .contact-item a { font-size: 17px; color: rgba(255,255,255,0.80); }
.contact-item a:hover { color: var(--primary-blue); }
.contact-cta {
    display: inline-block; margin-top: 48px;
    background: var(--primary-blue); color: var(--white);
    padding: 16px 48px; border-radius: 6px;
    font-family: var(--font-heading); font-weight: 600; font-size: 17px;
    transition: var(--transition-smooth);
}
.contact-cta:hover { background: #0062a8; transform: translateY(-2px); }
.contact-center { text-align: center; }

/* ============================================
   FOOTER
============================================ */
footer { background: #111111; padding: 56px 20px 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.5); margin-top: 16px; line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: rgba(255,255,255,0.4); margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.6); }
.footer-col ul li a:hover { color: var(--primary-blue); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 28px; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.35); }

/* ============================================
   ANIMATIONS
============================================ */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 900px) {
    .about-inner { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    nav .nav-menu.active {
        display: -webkit-flex;
        display: flex;
        -webkit-flex-direction: column;
        flex-direction: column;
        position: absolute;
        top: 72px; left: 0; right: 0;
        background: var(--white);
        padding: 20px;
        box-shadow: 0 8px 24px rgba(0,0,0,0.1);
        gap: 16px;
        z-index: 999;
    }
    .menu-toggle { display: -webkit-flex; display: flex; }
    .hero { padding: 120px 20px 60px; }
    .metrics-grid { grid-template-columns: 1fr 1fr; }
    .case-studies-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .metrics-grid { grid-template-columns: 1fr; }
    .case-studies-grid { grid-template-columns: 1fr; }
    .testimonials-grid { grid-template-columns: 1fr; }
}