/* ===== CSS Reset & Variables ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --navy: #1a2744;
    --navy-light: #2a3a5a;
    --navy-dark: #111b2e;
    --yellow: #f4c542;
    --yellow-light: #f9d76a;
    --yellow-dark: #d4a832;
    --linkedin: #0A66C2;
    --linkedin-dark: #084f9a;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    color: var(--navy);
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); margin-bottom: 0.75rem; }

p { margin-bottom: 1rem; }

a {
    color: var(--navy);
    text-decoration: none;
    transition: var(--transition);
}
a:hover { color: var(--yellow-dark); }

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
section { padding: 5rem 0; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--yellow);
    color: var(--navy);
    border-color: var(--yellow);
}
.btn-primary:hover {
    background-color: var(--yellow-dark);
    border-color: var(--yellow-dark);
    color: var(--navy);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background-color: transparent;
    color: var(--navy);
    border-color: var(--navy);
}
.btn-outline:hover {
    background-color: var(--navy);
    color: var(--white);
    transform: translateY(-2px);
}

/* LinkedIn button */
.btn-linkedin {
    background-color: var(--linkedin);
    color: var(--white);
    border-color: var(--linkedin);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.btn-linkedin:hover {
    background-color: var(--linkedin-dark);
    border-color: var(--linkedin-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow); }

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

.logo img {
    height: 225px;
    width: auto;
    position: relative;
    z-index: 10;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}
.nav-links a {
    font-weight: 500;
    color: var(--navy);
    padding: 0.5rem 0;
    position: relative;
    text-align: left;
}
.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background-color: var(--yellow);
    transition: var(--transition);
}
.nav-links a:not(.btn):hover::after { width: 100%; }
.nav-links .btn { padding: 0.625rem 1.25rem; }

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}
.mobile-menu-btn span {
    display: block;
    width: 25px; height: 2px;
    background-color: var(--navy);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    padding-top: 140px;
    padding-bottom: 4rem;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
}
.hero-content { max-width: 900px; }
.hero h1 { margin-bottom: 1.5rem; }
.hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 800px;
}
.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ===== Hero Image ===== */
.hero-image { padding: 0; background-color: var(--gray-100); overflow: hidden; }
.hero-slideshow {
    position: relative;
    width: 100%;
    height: 600px;
}
.hero-slideshow .slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}
.hero-slideshow .slide.active { opacity: 1; }
@media (max-width: 768px) {
    .hero-slideshow { height: 320px; }
}

/* ===== Clients Section ===== */
.clients { background-color: var(--white); }
.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 3rem;
    max-width: 700px;
    text-align: left;
}
.clients-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}
.client-card {
    text-align: center;
    padding: 2rem 1.5rem;
    border-radius: 12px;
    background-color: var(--gray-50);
    transition: var(--transition);
}
.client-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background-color: var(--white);
}
.client-icon {
    width: 80px; height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--yellow);
    border-radius: 50%;
    color: var(--navy);
}
.client-card h3 { font-size: 1.125rem; margin-bottom: 0.5rem; }
.client-card p { font-size: 0.9rem; color: var(--gray-600); margin-bottom: 0; }

/* ===== Services Section ===== */
.services { background-color: var(--navy); color: var(--white); }
.services h2 { color: var(--white); }
.services .section-subtitle { color: var(--gray-300); }
.services-list { display: flex; flex-direction: column; gap: 3rem; }
.service-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 2rem;
    padding: 2.5rem;
    background-color: var(--navy-light);
    border-radius: 12px;
    border-left: 4px solid var(--yellow);
}
.service-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--yellow);
    line-height: 1;
}
.service-content h3 { color: var(--white); font-size: 1.5rem; margin-bottom: 1rem; }
.service-content p { color: var(--gray-300); margin-bottom: 1rem; }
.service-content p:last-child { margin-bottom: 0; }

/* ===== Technology Section ===== */
.technology { background-color: var(--gray-50); }
.tech-intro {
    max-width: 900px;
    margin-bottom: 3rem;
    padding: 2rem;
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
}
.tech-intro h3 { margin-bottom: 1rem; }
.tech-intro p:last-child { margin-bottom: 0; }
.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}
.tech-card {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.tech-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); }
.tech-icon {
    width: 80px; height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--navy);
    border-radius: 12px;
    color: var(--yellow);
    margin-bottom: 1.5rem;
}
.tech-card h3 { margin-bottom: 1rem; }
.tech-card p { color: var(--gray-600); }
.tech-card p:last-child { margin-bottom: 0; }
.tech-integration {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    color: var(--white);
    padding: 3rem;
    border-radius: 12px;
}
.tech-integration h3 { color: var(--yellow); font-size: 1.5rem; margin-bottom: 1.5rem; }
.tech-integration p { color: var(--gray-200); }
.tech-integration p:last-child { margin-bottom: 0; }

/* ===== Contact Section ===== */
.contact { background-color: var(--white); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: start;
}
.contact-info h2 { margin-bottom: 1rem; }
.contact-info > p { color: var(--gray-600); margin-bottom: 2rem; }
.contact-details { display: flex; flex-direction: column; gap: 1.5rem; margin-bottom: 2rem; }
.contact-item { display: flex; gap: 1rem; align-items: flex-start; }
.contact-item svg { color: var(--yellow); flex-shrink: 0; margin-top: 2px; }
.contact-item strong { display: block; color: var(--navy); margin-bottom: 0.25rem; }
.contact-item a,
.contact-item span { color: var(--gray-600); font-size: 0.95rem; line-height: 1.5; }
.contact-item a:hover { color: var(--navy); }

.contact-cta { display: flex; align-items: center; justify-content: center; height: 100%; }
.cta-box {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    color: var(--white);
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
    width: 100%;
}
.cta-box h3 { color: var(--yellow); font-size: 1.5rem; margin-bottom: 1rem; text-align: center; }
.cta-box p { color: var(--gray-200); margin-bottom: 0; text-align: center; }

/* ===== Footer ===== */
.footer {
    background-color: var(--navy-dark);
    color: var(--gray-300);
    padding: 2rem 0;
}
.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
/* CHANGE 1: footer logo also larger */
.footer-logo {
    height: 80px;
    width: auto;
    filter: brightness(0) invert(1);
}
.footer p { margin: 0; font-size: 0.9rem; }
.footer-linkedin {
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
    display: flex;
    align-items: center;
}
.footer-linkedin:hover { color: var(--white); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .clients-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
    section { padding: 3.5rem 0; }

    .nav-links {
        position: fixed;
        top: 110px; left: 0; right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    .nav-links.active { transform: translateY(0); opacity: 1; visibility: visible; }
    .mobile-menu-btn { display: flex; }
    .mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
    .mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    .hero { padding-top: 120px; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; text-align: center; }

    .clients-grid { grid-template-columns: 1fr; gap: 1.5rem; }

    .service-item { grid-template-columns: 1fr; gap: 1rem; }
    .service-number { font-size: 2rem; }

    .footer-content { flex-direction: column; gap: 1rem; text-align: center; }

    .logo img { height: 130px; }
}

@media (max-width: 480px) {
    .container { padding: 0 1rem; }
    .tech-card, .tech-intro, .tech-integration, .cta-box, .service-item { padding: 1.5rem; }
    .logo img { height: 100px; }
}