/* --- VARIABLES --- */
:root {
    --primary: #0A2540;
    --primary-light: #16385d;
    --secondary: #FFFFFF;
    --bg-light: #F4F7FB;
    --accent: #2C7BE5;
    --accent-hover: #1a5ab5;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.05);
    
    --transition: all 0.3s ease;
    --font-main: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--secondary);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.bg-light {
    background-color: var(--bg-light);
}

/* --- TYPOGRAPHY & UTILITIES --- */
h1, h2, h3, h4, h5, h6 {
    color: var(--primary);
    font-weight: 700;
    line-height: 1.2;
}

p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

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

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.divider {
    height: 4px;
    width: 60px;
    background-color: var(--accent);
    margin: 0 auto 1.5rem;
}

.divider-left {
    height: 4px;
    width: 60px;
    background-color: var(--accent);
    margin: 0.5rem 0 1.5rem;
}

/* --- BUTTONS --- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--secondary);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: var(--secondary);
}

.btn-primary-alt {
    background-color: var(--secondary);
    color: var(--primary);
}

.btn-primary-alt:hover {
    background-color: var(--bg-light);
    color: var(--primary);
}

.btn-outline {
    background-color: transparent;
    color: var(--secondary);
    border-color: var(--secondary);
}

.btn-outline:hover {
    background-color: var(--secondary);
    color: var(--primary);
}

.btn-block {
    display: block;
    width: 100%;
}

/* --- 1. TOP HEADER --- */
.top-header {
    background-color: var(--primary);
    color: var(--secondary);
    font-size: 0.85rem;
    padding: 0.5rem 0;
}

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

.contact-info a {
    margin-right: 1.5rem;
    opacity: 0.9;
}

.contact-info a:hover, .social-links a:hover {
    opacity: 1;
    color: var(--accent);
}

.social-links a {
    margin-left: 1rem;
    opacity: 0.9;
}

/* --- 2. NAVBAR --- */
.navbar {
    background-color: var(--secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: -1px; /* fixes sticky edge */
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    color: #2C7BE5; /* Blue shade matching accent */
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--primary);
    position: relative;
}

.nav-links a:hover {
    color: var(--accent);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary);
    cursor: pointer;
}

/* --- 3. HERO SECTION --- */
.hero {
    background-color: var(--primary);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

/* Using a simple subtle pattern inside hero via base64 */
.hero::after {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAOklEQVQoU2NkYGDgYGBgYJBkiAEKkASYoWwQjU2eITbLkJWBgYGBoS4GzGBkYEgD2YRMw1U2E+a7oQUA4d0I7/9+BtsAAAAASUVORK5CYII=) repeat;
    opacity: 0.05;
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    color: var(--secondary);
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.hero p {
    color: #cbd5e1;
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

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

/* --- SECTION SPACING --- */
section {
    padding: 5rem 0;
}

/* --- 4. SERVICES --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--secondary);
    border: 1px solid var(--border);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.service-card > img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.service-card:hover > img {
    transform: scale(1.05);
}

.service-info {
    padding: 2rem;
    background: var(--secondary);
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--border);
}

.service-card .icon {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

/* --- 5. ABOUT --- */
.about-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image img {
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.about-bullets {
    margin: 1.5rem 0;
}

.about-bullets li {
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.about-bullets i {
    color: var(--accent);
    margin-right: 0.5rem;
}

.counters {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.counter-box h3 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.counter-box span {
    font-weight: 500;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* --- 6. WHY CHOOSE US --- */
.why-us-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.why-card {
    text-align: center;
    padding: 2rem;
    background: var(--secondary);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.why-card:hover {
    border-color: var(--primary);
}

.why-card i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.why-card h4 {
    margin-bottom: 0.75rem;
}

/* --- 7. PROJECTS --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    border: 1px solid var(--border);
    background: var(--secondary);
    overflow: hidden;
    position: relative;
    transition: var(--transition);
}

.project-card img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover img {
    transform: scale(1.05);
}

.project-info {
    padding: 1.5rem;
    background: var(--secondary);
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--border);
    transition: var(--transition);
}

.project-card:hover .project-info {
    background-color: var(--primary);
}

.project-card:hover .project-info h4,
.project-card:hover .project-info p {
    color: var(--secondary);
}

.project-info h4 {
    margin-bottom: 0.5rem;
}

/* --- 8. TESTIMONIALS --- */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    justify-content: center;
}

.testimonial-card {
    background: var(--secondary);
    padding: 2.5rem;
    border: 1px solid var(--border);
    position: relative;
}

.quote-icon {
    font-size: 2rem;
    color: var(--border);
    margin-bottom: 1rem;
}

.testimonial-card p {
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.testimonial-card h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.testimonial-card span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* --- 9. CTA SECTION --- */
.cta {
    background-color: var(--primary);
    color: var(--secondary);
    text-align: center;
    padding: 4rem 0;
}

.cta-inner h2 {
    color: var(--secondary);
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

/* --- 10. CONTACT --- */
.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item i {
    font-size: 1.25rem;
    color: var(--accent);
    padding-top: 0.25rem;
}

.contact-item h4 {
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.contact-item p {
    margin-bottom: 0;
}

.contact-form-container {
    background: var(--secondary);
    padding: 2.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    font-family: var(--font-main);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(44,123,229,0.2);
}

.form-feedback {
    margin-top: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
}

.form-feedback.success { color: #10b981; }
.form-feedback.error { color: #ef4444; }

/* --- 11. FOOTER --- */
.footer {
    background-color: var(--primary);
    color: var(--text-muted);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--primary-light);
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

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

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

.footer-col ul li a:hover {
    color: var(--secondary);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--primary-light);
    font-size: 0.9rem;
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 992px) {
    .about-inner, .contact-inner {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .top-header {
        display: none;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--secondary);
        flex-direction: column;
        gap: 0;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        border-top: 1px solid var(--border);
    }

    .nav-links a {
        display: block;
        padding: 1rem 20px;
    }

    .navbar .btn {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .counters {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .footer-inner {
        grid-template-columns: 1fr;
    }
}