:root {
    --bg-color: #181818;
    --surface-color: #222222;
    --surface-hover: #2a2a2a;
    --text-color: #f1f1f1;
    --text-muted: #888888;
    --accent-green: #5df878;
    --accent-red: #e5002d;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --radius: 16px;
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body { background-color: var(--bg-color); color: var(--text-color); font-family: var(--font-body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
h1,h2,h3,h4,h5,h6 { font-family: var(--font-heading); color: var(--text-color); line-height: 1.1; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }

/* Utilities */
.text-accent-green { color: var(--accent-green); }
.text-accent-red { color: var(--accent-red); }
.text-muted { color: var(--text-muted); }
.container { width: 90%; max-width: 1400px; margin: 0 auto; }
.section { padding: 10vh 0; }
.section-tag { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.2em; margin-bottom: 1rem; font-weight: 600; }
.grid { display: grid; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.gap-sm { gap: 1rem; }
.gap-md { gap: 2rem; }
.gap-lg { gap: 3rem; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }

h2.section-title { font-size: clamp(2.5rem, 5vw, 4.5rem); margin-bottom: 3rem; letter-spacing: -0.02em; }

/* Lenis */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

/* ╔══════════════════════════════════════════════╗
   ║              NAVBAR                          ║
   ╚══════════════════════════════════════════════╝ */
.navbar {
    position: fixed; top: 0; width: 100%;
    padding: 1.5rem 5%; display: flex; justify-content: space-between; align-items: center;
    z-index: 100; transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(24, 24, 24, 0.92); backdrop-filter: blur(12px);
    padding: 0.8rem 5%; border-bottom: 1px solid rgba(255,255,255,0.05);
}
.logo { display: inline-flex; align-items: center; }
.logo img { height: 36px; width: auto; display: block; }
.nav-links { display: flex; gap: 2.5rem; }
.nav-links a { font-weight: 500; font-size: 0.95rem; position: relative; }
.nav-links a::after { content: ''; position: absolute; width: 0; height: 2px; bottom: -5px; left: 0; background-color: var(--accent-green); transition: var(--transition); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a:hover, .nav-links a.active { color: var(--accent-green); }

.btn-nav { font-size: 0.85rem; padding: 0.7rem 1.5rem; }

.hamburger { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: pointer; z-index: 101; }
.hamburger.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
.hamburger span { width: 28px; height: 2px; background-color: var(--text-color); transition: var(--transition); }

.mobile-menu {
    position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    background: var(--bg-color); display: flex; flex-direction: column;
    justify-content: center; align-items: center; gap: 2rem;
    z-index: 99; transform: translateY(-100%);
    transition: transform 0.5s cubic-bezier(0.77, 0, 0.175, 1);
}
.mobile-menu.active { transform: translateY(0); }
.mobile-menu a { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 700; }

/* ╔══════════════════════════════════════════════╗
   ║              BUTTONS                         ║
   ╚══════════════════════════════════════════════╝ */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--accent-green); color: var(--bg-color);
    padding: 1rem 2rem; border-radius: 50px;
    font-family: var(--font-heading); font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em;
    transition: var(--transition); border: 2px solid transparent;
    cursor: pointer; font-size: 0.9rem;
}
.btn:hover { background: transparent; color: var(--accent-green); border-color: var(--accent-green); box-shadow: 0 0 25px rgba(93,248,120,0.15); }
.btn svg { transition: transform 0.3s ease; }
.btn:hover svg { transform: translateX(5px); }

.btn-outline { background: transparent; color: var(--text-color); border: 2px solid rgba(255,255,255,0.2); }
.btn-outline:hover { border-color: var(--accent-green); color: var(--accent-green); }

.btn-whatsapp { background: #25D366; color: #fff; border-color: #25D366; }
.btn-whatsapp:hover { background: transparent; color: #25D366; border-color: #25D366; box-shadow: 0 0 25px rgba(37,211,102,0.2); }
.btn-whatsapp svg { fill: currentColor; }

.btn-red { background: var(--accent-red); }
.btn-red:hover { background: transparent; color: var(--accent-red); border-color: var(--accent-red); }

/* ╔══════════════════════════════════════════════╗
   ║              HERO                            ║
   ╚══════════════════════════════════════════════╝ */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; }
.hero::after {
    content: ''; position: absolute; width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(93,248,120,0.08) 0%, transparent 70%);
    top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: -1; border-radius: 50%; pointer-events: none;
}
.hero-tag { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.2em; color: var(--accent-green); margin-bottom: 1.5rem; font-weight: 600; }
.hero h1 { font-size: clamp(3rem, 7vw, 6.5rem); margin-bottom: 1.5rem; font-weight: 900; }
.hero-sub { font-size: clamp(1.05rem, 1.8vw, 1.35rem); color: var(--text-muted); max-width: 620px; margin-bottom: 2.5rem; line-height: 1.7; }
.hero-sub strong { color: var(--accent-green); }
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ╔══════════════════════════════════════════════╗
   ║           TRUST BAR / CLIENTS                ║
   ╚══════════════════════════════════════════════╝ */
.trust-bar { padding: 4vh 0; background: rgba(255,255,255,0.02); }
.trust-label { text-align: center; text-transform: uppercase; letter-spacing: 0.15em; font-size: 0.8rem; margin-bottom: 2rem; }
/* ╔══════════════════════════════════════════════╗
   ║          CLIENT LOGO SLIDER                  ║
   ╚══════════════════════════════════════════════╝ */
.client-slider { overflow: hidden; position: relative; cursor: grab; user-select: none; }
.client-slider:active { cursor: grabbing; }
/* fade edges */
.client-slider::before, .client-slider::after {
    content: ''; position: absolute; top: 0; bottom: 0; width: 80px; z-index: 2; pointer-events: none;
}
.client-slider::before { left: 0; background: linear-gradient(to right, var(--bg-color), transparent); }
.client-slider::after  { right: 0; background: linear-gradient(to left, var(--bg-color), transparent); }

.client-track {
    display: flex; align-items: center; gap: 3.5rem;
    width: max-content;
    /* animation handled via GSAP for better smoothness & control */
    will-change: transform;
}



.client-logo {
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    filter: grayscale(100%); opacity: 0.45; transition: var(--transition);
}
.client-logo:hover { filter: grayscale(0%); opacity: 1; transform: scale(1.05); }
.client-logo img { height: 60px; width: auto; max-width: 150px; object-fit: contain; display: block; }

/* ╔══════════════════════════════════════════════╗
   ║              SERVICE CARDS                   ║
   ╚══════════════════════════════════════════════╝ */
.service-card {
    background: var(--surface-color); padding: 2.5rem; border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.05); transition: var(--transition);
    display: flex; flex-direction: column;
}
.service-card:hover { transform: translateY(-8px); border-color: rgba(255,255,255,0.1); background: var(--surface-hover); }
.sc-icon { margin-bottom: 1.5rem; }
.service-card h3 { font-size: 1.35rem; margin-bottom: 0.8rem; }
.service-card p { color: var(--text-muted); line-height: 1.6; font-size: 0.95rem; flex: 1; }
.card-metric { display: block; margin-top: 1.5rem; font-family: var(--font-heading); font-weight: 700; font-size: 0.9rem; }

/* ╔══════════════════════════════════════════════╗
   ║              CASE STUDY CARDS                ║
   ╚══════════════════════════════════════════════╝ */
.case-card {
    background: var(--surface-color); padding: 3rem; border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.05); transition: var(--transition);
}
.case-card:hover { border-color: rgba(93,248,120,0.2); }
.case-header { margin-bottom: 1.5rem; }
.case-tag { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-red); font-weight: 600; }
.case-header h3 { font-size: 2rem; margin-top: 0.5rem; }
.case-desc { color: var(--text-muted); line-height: 1.7; margin-bottom: 2rem; }
.case-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 2rem; }
.cm { text-align: center; padding: 1rem; background: rgba(255,255,255,0.03); border-radius: 12px; }
.cm-num { display: block; font-family: var(--font-heading); font-size: 1.8rem; font-weight: 900; color: var(--accent-green); }
.cm-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.case-link { font-weight: 600; font-size: 0.95rem; }
.case-link:hover { text-decoration: underline; }

/* ╔══════════════════════════════════════════════╗
   ║              PROCESS                         ║
   ╚══════════════════════════════════════════════╝ */
.process-step { display: flex; gap: 3rem; margin-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: 3rem; align-items: center; transition: var(--transition); }
.process-step:hover { border-bottom-color: rgba(229,0,45,0.4); }
.process-step:last-child { margin-bottom: 0; border-bottom: none; padding-bottom: 0; }
.ps-num { font-family: var(--font-heading); font-size: 5rem; font-weight: 900; color: transparent; -webkit-text-stroke: 1px var(--accent-red); opacity: 0.4; transition: var(--transition); min-width: 100px; text-align: center; }
.process-step:hover .ps-num { opacity: 1; -webkit-text-stroke: 2px var(--accent-red); }
.ps-content h3 { font-size: 2rem; margin-bottom: 0.8rem; }
.ps-content p { color: var(--text-muted); font-size: 1.05rem; line-height: 1.6; max-width: 600px; }

/* ╔══════════════════════════════════════════════╗
   ║            TESTIMONIALS                      ║
   ╚══════════════════════════════════════════════╝ */
.testimonial-card {
    background: var(--surface-color); padding: 2.5rem; border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.05); transition: var(--transition);
    display: flex; flex-direction: column;
}
.testimonial-card:hover { border-color: rgba(229,0,45,0.3); transform: translateY(-5px); }
.stars { color: #FFD700; font-size: 1.1rem; margin-bottom: 1rem; letter-spacing: 3px; }
.testimonial-card > p { color: var(--text-muted); line-height: 1.7; font-size: 0.95rem; flex: 1; margin-bottom: 2rem; font-style: italic; }
.test-author { display: flex; align-items: center; gap: 1rem; }
.ta-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--accent-green); color: var(--bg-color); display: flex; align-items: center; justify-content: center; font-family: var(--font-heading); font-weight: 900; font-size: 0.85rem; flex-shrink: 0; }
.test-author strong { display: block; font-size: 0.95rem; }
.test-author span { font-size: 0.8rem; }

/* ╔══════════════════════════════════════════════╗
   ║              CTA SECTION                     ║
   ╚══════════════════════════════════════════════╝ */
.cta-section { padding: 8vh 0; }
.cta-box {
    background: linear-gradient(135deg, var(--surface-color) 0%, #1a1a1a 100%);
    padding: clamp(3rem, 6vw, 5rem); border-radius: 24px; text-align: center;
    border: 1px solid rgba(93,248,120,0.1); position: relative; overflow: hidden;
}
.cta-box::before {
    content: ''; position: absolute; width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(93,248,120,0.06) 0%, transparent 70%);
    top: -150px; right: -150px; border-radius: 50%; pointer-events: none;
}
.cta-box h2 { font-size: clamp(2rem, 4vw, 3.5rem); margin-bottom: 1.5rem; }
.cta-box > p { color: var(--text-muted); max-width: 550px; margin: 0 auto 2rem; line-height: 1.6; }
.cta-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.cta-note { margin-top: 1.5rem; font-size: 0.8rem; }

/* ╔══════════════════════════════════════════════╗
   ║              FOOTER                         ║
   ╚══════════════════════════════════════════════╝ */
.footer { padding: 6vh 0 3vh; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer-brand h2 { font-size: 1.5rem; margin-bottom: 0.8rem; }
.footer-brand p { font-size: 0.9rem; line-height: 1.6; }
.footer-col h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 1rem; color: var(--accent-green); }
.footer-col a { display: block; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0.6rem; }
.footer-col a:hover { color: var(--text-color); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 1.5rem; text-align: center; }
.footer-bottom p { font-size: 0.8rem; }

/* ╔══════════════════════════════════════════════╗
   ║         CASE STUDY PAGE STYLES              ║
   ╚══════════════════════════════════════════════╝ */
.cs-hero { min-height: 50vh; display: flex; align-items: center; padding-top: 12vh; }
.cs-filter { display: flex; gap: 1rem; margin-bottom: 3rem; flex-wrap: wrap; }
.cs-filter-btn { background: var(--surface-color); color: var(--text-muted); border: 1px solid rgba(255,255,255,0.1); padding: 0.6rem 1.5rem; border-radius: 50px; font-family: var(--font-body); cursor: pointer; transition: var(--transition); font-size: 0.85rem; }
.cs-filter-btn:hover, .cs-filter-btn.active { background: var(--accent-green); color: var(--bg-color); border-color: var(--accent-green); }

.cs-full-card { background: var(--surface-color); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.05); padding: 3rem; margin-bottom: 3rem; transition: var(--transition); }
.cs-full-card:hover { border-color: rgba(93,248,120,0.15); }
.cs-full-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 2rem; flex-wrap: wrap; gap: 1rem; }
.cs-full-header h3 { font-size: 2rem; }
.cs-phase { margin-bottom: 2rem; }
.cs-phase-label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.15em; font-weight: 600; margin-bottom: 0.5rem; }
.cs-phase p { color: var(--text-muted); line-height: 1.7; }
.cs-results-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.cs-result-item { text-align: center; padding: 1.5rem; background: rgba(255,255,255,0.03); border-radius: 12px; }
.cs-result-num { font-family: var(--font-heading); font-size: 2rem; font-weight: 900; color: var(--accent-green); display: block; }
.cs-result-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; }

/* ╔══════════════════════════════════════════════╗
   ║          ABOUT PAGE STYLES                  ║
   ╚══════════════════════════════════════════════╝ */
.about-hero { min-height: 55vh; display: flex; align-items: center; padding-top: 12vh; }
.about-hero p { color: var(--text-muted); max-width: 650px; font-size: 1.15rem; line-height: 1.7; margin-top: 1.5rem; }

.founder-section { display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem; align-items: center; }
.founder-img { aspect-ratio: 3/4; background: linear-gradient(45deg, var(--surface-color), #2a2a2a); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.05); }
.founder-content h3 { font-size: 2rem; margin-bottom: 1rem; }
.founder-content p { color: var(--text-muted); line-height: 1.7; margin-bottom: 1.5rem; }
.founder-sig { font-family: var(--font-heading); font-size: 1.5rem; font-style: italic; color: var(--accent-green); }

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.value-card { background: var(--surface-color); padding: 2.5rem; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.05); transition: var(--transition); }
.value-card:hover { border-color: rgba(93,248,120,0.2); transform: translateY(-5px); }
.value-card h4 { font-size: 1.2rem; margin-bottom: 0.8rem; color: var(--accent-green); }
.value-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.stat-card { text-align: center; padding: 2rem; transition: var(--transition); }
.stat-card:hover { transform: translateY(-5px); }
.stat-number { font-size: 3rem; font-family: var(--font-heading); font-weight: 900; color: var(--accent-green); display: block; }
.stat-label { color: var(--text-muted); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; margin-top: 0.3rem; }

/* Team */
.team-card { background: var(--surface-color); border-radius: var(--radius); overflow: hidden; transition: var(--transition); border: 1px solid rgba(255,255,255,0.05); }
.team-card:hover { transform: translateY(-8px); border-color: rgba(93,248,120,0.3); }
.team-img { aspect-ratio: 3/4; overflow: hidden; border-bottom: 2px solid var(--accent-green); position: relative; }
.team-img img { width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; filter: grayscale(20%); transition: var(--transition); }
.team-card:hover .team-img img { filter: grayscale(0%); transform: scale(1.04); }
.team-info { padding: 2rem; text-align: center; }
.team-info h3 { font-size: 1.3rem; margin-bottom: 0.3rem; }
.team-info p { font-size: 0.9rem; }
.team-info .team-bio { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.5rem; line-height: 1.5; }

/* ╔══════════════════════════════════════════════╗
   ║          CONTACT PAGE STYLES                ║
   ╚══════════════════════════════════════════════╝ */
.contact-hero { min-height: 45vh; display: flex; align-items: center; padding-top: 12vh; }
.contact-hero p { color: var(--text-muted); max-width: 550px; font-size: 1.1rem; line-height: 1.7; margin-top: 1rem; }
.contact-wrap { display: grid; grid-template-columns: 1.2fr 1fr; gap: 4rem; }
.contact-form { display: flex; flex-direction: column; gap: 1.5rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.form-group input, .form-group textarea, .form-group select {
    background: transparent; border: none; border-bottom: 2px solid rgba(255,255,255,0.1);
    color: var(--text-color); font-family: var(--font-body); padding: 0.8rem 0; font-size: 1rem;
    transition: var(--transition); border-radius: 0; -webkit-appearance: none; appearance: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-bottom-color: var(--accent-green); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-color); color: var(--text-color); }
.form-success { display: none; text-align: center; padding: 3rem; }
.form-success.show { display: block; }
.form-success h3 { color: var(--accent-green); font-size: 2rem; margin-bottom: 1rem; }

.contact-sidebar { display: flex; flex-direction: column; gap: 2rem; }
.sidebar-card { background: var(--surface-color); padding: 2.5rem; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.05); }
.sidebar-card h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-red); margin-bottom: 1.5rem; }
.info-item { margin-bottom: 1.5rem; }
.info-item:last-child { margin-bottom: 0; }
.info-item p, .info-item a { font-size: 1.1rem; font-weight: 500; }
.info-item a:hover { color: var(--accent-green); }
.info-item .info-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; margin-bottom: 0.2rem; display: block; }
.social-links { display: flex; gap: 1.5rem; }

.calendly-card { text-align: center; }
.calendly-card p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 1.5rem; line-height: 1.5; }

/* ╔══════════════════════════════════════════════╗
   ║      PERFORMANCE & PAINT OPTIMISATIONS      ║
   ╚══════════════════════════════════════════════╝ */
/* Reduce layout reflow on animated elements */
.client-track { will-change: transform; }
.service-card, .team-card, .testimonial-card, .value-card { contain: layout style; }
.navbar { contain: layout style; }

/* Faster tap response on touch devices */
a, button, .btn, .hamburger, .client-slider {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

/* Prevent text size inflation on orientation change (iOS) */
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

/* ╔══════════════════════════════════════════════╗
   ║         RESPONSIVE BREAKPOINTS              ║
   ╚══════════════════════════════════════════════╝ */

/* ── 1200px: Wide tablets, small laptops ─────── */
@media (max-width: 1200px) {
    .cols-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 2rem; }
    .cs-results-grid { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: clamp(3rem, 6vw, 5.5rem); }
}

/* ── 1024px: Tablets landscape ───────────────── */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
    .founder-section { gap: 2.5rem; }
    .contact-wrap { gap: 2.5rem; }
    .cs-full-header h3 { font-size: 1.6rem; }
    h2.section-title { font-size: clamp(2rem, 4.5vw, 4rem); }
}

/* ── 900px: Tablets portrait, large phones ────── */
@media (max-width: 900px) {
    .section { padding: 8vh 0; }

    /* Nav */
    .nav-links, .btn-nav { display: none; }
    .hamburger { display: flex; }

    /* Grids → single column */
    .cols-3, .cols-2 { grid-template-columns: 1fr; }
    .founder-section { grid-template-columns: 1fr; gap: 2rem; }
    .contact-wrap { grid-template-columns: 1fr; gap: 2rem; }
    .form-row { grid-template-columns: 1fr; gap: 1.2rem; }
    .values-grid { grid-template-columns: 1fr; }

    /* Hero */
    .hero { align-items: flex-start; padding-top: 14vh; min-height: auto; padding-bottom: 6vh; }
    .hero::after { width: 350px; height: 350px; }
    h2.section-title { margin-bottom: 2rem; font-size: clamp(2rem, 5vw, 3.5rem); }

    /* Slider Optimization */
    .client-logo img { height: 50px; }
    .client-track { gap: 3rem; }
    .client-logo { opacity: 0.65; filter: grayscale(60%); }

    /* Process */
    .process-step { flex-direction: column; gap: 1rem; padding-bottom: 2.5rem; margin-bottom: 2.5rem; }
    .ps-num { font-size: 3.5rem; min-width: auto; text-align: left; }

    /* Footer */
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }

    /* Stats */
    .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

    /* Case study */
    .cs-full-header { flex-direction: column; }
    .case-metrics { grid-template-columns: repeat(3, 1fr); gap: 0.8rem; }
    .cs-results-grid { grid-template-columns: repeat(2, 1fr); }

    /* Gaps */
    .gap-lg { gap: 2rem; }
    .gap-md { gap: 1.5rem; }

    /* CTA */
    .cta-section { padding: 6vh 0; }
    .cta-box { padding: 3rem 2rem; }
    .cta-box h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
}

/* ── 768px: Tablets portrait ─────────────────── */
@media (max-width: 768px) {
    .container { width: 92%; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .founder-img { aspect-ratio: 16/9; }
    .cta-box { padding: 2.5rem 1.5rem; }
    .case-card { padding: 2rem 1.5rem; }
    .cs-hero, .about-hero, .contact-hero { min-height: auto; padding-top: 14vh; padding-bottom: 4vh; }
    .sidebar-card { padding: 2rem; }
    .info-item p, .info-item a { font-size: 1rem; }
    .logo img { height: 30px; }
}

/* ── 640px: Large phones ─────────────────────── */
@media (max-width: 640px) {
    .section { padding: 6vh 0; }
    .container { width: 91%; }

    /* Slider on mobile - Improved density & visibility */
    .client-slider::before, .client-slider::after { width: 30px; }
    .client-track { gap: 2rem; }
    .client-logo img { height: 40px; }
    .client-logo { opacity: 0.8; filter: grayscale(30%); }

    /* Buttons */
    .hero-ctas, .cta-buttons { flex-direction: column; width: 100%; gap: 0.9rem; }
    .btn { width: 100%; justify-content: center; padding: 1rem 1.5rem; font-size: 0.875rem; }
    .btn-nav { display: none; }

    /* Typography */
    .hero h1 { font-size: clamp(2.2rem, 9vw, 3rem); line-height: 1.1; letter-spacing: -0.02em; }
    .hero-sub { font-size: 1rem; line-height: 1.65; margin-bottom: 2rem; }
    h2.section-title { font-size: clamp(1.75rem, 7vw, 2.5rem); margin-bottom: 1.5rem; }
    .hero-tag, .section-tag { font-size: 0.78rem; letter-spacing: 0.15em; }

    /* Cards */
    .service-card { padding: 1.75rem 1.25rem; }
    .sc-icon { margin-bottom: 1rem; }
    .service-card h3 { font-size: 1.2rem; }
    .testimonial-card, .value-card, .team-info, .cs-full-card { padding: 1.5rem 1.25rem; }
    .case-card { padding: 1.75rem 1.25rem; }
    .sidebar-card { padding: 1.5rem 1.25rem; }

    /* Case study results */
    .cs-results-grid { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
    .cs-result-item { padding: 1rem; }
    .cs-result-num { font-size: 1.5rem; }
    .case-metrics { grid-template-columns: 1fr; }

    /* Process */
    .process-step { gap: 0.8rem; }
    .ps-content h3 { font-size: 1.4rem; }
    .ps-content p { font-size: 0.95rem; }
    .ps-num { font-size: 3rem; }

    /* Stats */
    .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
    .stat-number { font-size: 2.2rem; }
    .stat-card { padding: 1.25rem 1rem; }

    /* Navbar */
    .navbar { padding: 1rem 4%; }
    .mobile-menu a { font-size: 1.8rem; }

    /* Footer */
    .footer-col { margin-bottom: 0.25rem; }
    .footer-brand p { font-size: 0.85rem; }
    .footer-bottom p { font-size: 0.75rem; }

    /* Contact */
    .social-links { flex-wrap: wrap; gap: 0.75rem; }
    .contact-hero p, .about-hero p { font-size: 1rem; }
    .form-group input, .form-group textarea, .form-group select {
        font-size: 1rem; /* prevent iOS zoom on focus – must be ≥16px equivalent */
        padding: 0.7rem 0;
    }

    /* Team */
    .team-info h3 { font-size: 1.1rem; }
    .team-info p { font-size: 0.85rem; }
    .team-img { aspect-ratio: 1; }

    /* CTA note */
    .cta-note { font-size: 0.75rem; }

    /* Founder sig */
    .founder-sig { font-size: 1.2rem; }
}

/* ── 480px: Small phones ─────────────────────── */
@media (max-width: 480px) {
    .container { width: 90%; }
    .hero { padding-top: 16vh; }
    .hero h1 { font-size: clamp(2rem, 10vw, 2.6rem); }
    .hero-sub { font-size: 0.95rem; }
    h2.section-title { font-size: clamp(1.6rem, 8vw, 2rem); }
    .section { padding: 5vh 0; }
    .cta-box { padding: 2rem 1rem; border-radius: 16px; }
    .cta-box h2 { font-size: clamp(1.5rem, 7vw, 2rem); }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .cs-results-grid { grid-template-columns: repeat(2, 1fr); }
    .cs-result-num { font-size: 1.35rem; }
    .footer-grid { gap: 1.5rem; }
    .process-step { padding-bottom: 2rem; margin-bottom: 2rem; }
    .ps-num { font-size: 2.5rem; }
    .logo img { height: 28px; }
}

/* ── 380px: Very small phones (Galaxy Fold, etc) */
@media (max-width: 380px) {
    .container { width: 88%; }
    .hero h1 { font-size: clamp(1.8rem, 11vw, 2.2rem); }
    h2.section-title { font-size: 1.5rem; }
    .stat-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
    .cs-results-grid { grid-template-columns: 1fr; }
    .btn { font-size: 0.82rem; padding: 0.9rem 1.1rem; }
    .mobile-menu a { font-size: 1.5rem; gap: 1.5rem; }
    .navbar { padding: 0.8rem 4%; }
    .logo img { height: 26px; }
    .client-track { gap: 1.5rem; }
    .client-logo img { height: 32px; }
    .client-logo { opacity: 0.85; filter: grayscale(20%); }
    .sidebar-card { padding: 1.25rem 1rem; }
    .footer-col a { font-size: 0.85rem; }
}

/* ── Safe area insets (notched/island iPhones, Android cutout) */
@supports (padding: max(0px)) {
    .navbar {
        padding-left: max(5%, env(safe-area-inset-left));
        padding-right: max(5%, env(safe-area-inset-right));
    }
    .mobile-menu {
        padding-bottom: env(safe-area-inset-bottom);
    }
    .footer {
        padding-bottom: max(3vh, env(safe-area-inset-bottom));
    }
}

/* ── High contrast mode support ──────────────── */
@media (forced-colors: active) {
    .btn { border: 2px solid ButtonText; }
    .service-card, .case-card, .testimonial-card { border: 1px solid ButtonText; }
}

/* ── Print styles ────────────────────────────── */
@media print {
    .navbar, .hamburger, .mobile-menu, .hero-ctas, .cta-section, .client-slider { display: none; }
    body { background: #fff; color: #000; }
    .section { padding: 1rem 0; }
    .footer { border: none; }
}