/* =============================================
   ROOT VARIABLES & RESET
   ============================================= */
:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #0f766e;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

/* =============================================
   CONTAINER & UTILITIES
   ============================================= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* =============================================
   NAVIGATION BAR
   ============================================= */
.navbar {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding-bottom: 0.25rem;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 4px 0;
    transition: 0.3s;
}

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--bg-white);
    padding: 120px 20px;
    text-align: center;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background-color: var(--bg-white);
    color: var(--primary-color);
    padding: 12px 40px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* =============================================
   SERVICES OVERVIEW
   ============================================= */
.services-overview {
    padding: 80px 20px;
    background-color: var(--bg-light);
}

.services-overview h3 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--primary-color);
}

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

.service-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-top: 3px solid var(--secondary-color);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-card h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* =============================================
   STATS SECTION
   ============================================= */
.stats {
    background-color: var(--primary-color);
    color: var(--bg-white);
    padding: 60px 20px;
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item h5 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.stat-item p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* =============================================
   TEAM PREVIEW SECTION
   ============================================= */
.team-preview {
    padding: 80px 20px;
    background-color: var(--bg-white);
}

.team-preview h3 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--primary-color);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.team-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.team-card:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.team-image {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.team-image img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
}

.team-card h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.team-card .role {
    font-size: 0.95rem;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.team-card .experience {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.team-card .skills {
    font-size: 0.85rem;
    color: var(--text-light);
    background-color: var(--bg-light);
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.learn-more-btn {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--bg-white);
    padding: 12px 35px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}

.learn-more-btn:hover {
    background-color: var(--primary-color);
}

/* =============================================
   CTA SECTION
   ============================================= */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--bg-white);
    padding: 80px 20px;
    text-align: center;
}

.cta-section h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-button-dark {
    display: inline-block;
    background-color: var(--bg-white);
    color: var(--primary-color);
    padding: 12px 40px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button-dark:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
    background-color: #0f172a;
    color: #e5e7eb;
    padding: 60px 20px 20px;
}

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

.footer-section h5 {
    color: var(--bg-white);
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-section p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #d1d5db;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* =============================================
   PAGE SECTIONS (About, Team, Services, Contact)
   ============================================= */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--bg-white);
    padding: 80px 20px;
    text-align: center;
}

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

.page-content {
    padding: 60px 20px;
}

.content-section {
    margin-bottom: 4rem;
}

.content-section h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.content-section p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* =============================================
   FORM STYLES
   ============================================= */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    background-color: var(--secondary-color);
    color: var(--bg-white);
    padding: 12px 40px;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

/* =============================================
   CONTACT INFO
   ============================================= */
.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.info-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 8px;
    border-left: 3px solid var(--secondary-color);
}

.info-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.info-card p {
    color: var(--text-light);
}

/* =============================================
   EXPERIENCE SECTION
   ============================================= */
.experience-list {
    margin-top: 2rem;
}

.experience-item {
    background: var(--bg-light);
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
}

.experience-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.experience-item .position {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.experience-item .duration {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.skill-tag {
    background-color: var(--secondary-color);
    color: var(--bg-white);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* =============================================
   RESPONSIVE DESIGN
   ============================================= */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .services-overview h3,
    .team-preview h3 {
        font-size: 1.8rem;
    }

    .services-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .page-header h1 {
        font-size: 1.8rem;
    }

    .stat-item h5 {
        font-size: 2rem;
    }

    .cta-section h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.2rem;
    }

    .hero-content h2 {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 0.95rem;
    }

    .services-overview h3,
    .team-preview h3 {
        font-size: 1.5rem;
    }

    .page-header {
        padding: 50px 20px;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }

    .page-content {
        padding: 40px 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}