/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #fff;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header & Navigation ===== */
header {
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 100;
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}
.logo {
    font-size: 24px;
    font-weight: 700;
    color: #0a2540;
    letter-spacing: 0.5px;
}
.logo span { color: #2563eb; }
.nav-links {
    display: flex;
    gap: 36px;
    list-style: none;
}
.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: #475569;
    transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: #2563eb; }
.nav-cta {
    background: #2563eb;
    color: #fff !important;
    padding: 10px 22px;
    border-radius: 6px;
    font-weight: 600;
    transition: background 0.2s;
}
.nav-cta:hover { background: #1d4ed8; }

/* ===== Hero Section ===== */
.hero {
    background: linear-gradient(135deg, #0a2540 0%, #1e40af 100%);
    color: #fff;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: '';
    position: absolute;
    right: -100px;
    top: 50%;
    transform: translateY(-50%);
    width: 500px;
    height: 500px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}
.hero-content { max-width: 600px; position: relative; z-index: 1; }
.hero h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}
.hero p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
    line-height: 1.7;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
    background: #fff;
    color: #1e40af;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    transition: transform 0.2s;
    display: inline-block;
}
.btn-primary:hover { transform: translateY(-2px); }
.btn-secondary {
    border: 2px solid rgba(255,255,255,0.5);
    color: #fff;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    transition: border-color 0.2s;
    display: inline-block;
}
.btn-secondary:hover { border-color: #fff; }

/* ===== Section Common ===== */
.section { padding: 80px 0; }
.section-title {
    text-align: center;
    margin-bottom: 56px;
}
.section-title h2 {
    font-size: 36px;
    color: #0a2540;
    margin-bottom: 14px;
}
.section-title p {
    color: #64748b;
    font-size: 17px;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Features ===== */
.features { background: #f8fafc; }
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.feature-card {
    background: #fff;
    padding: 36px 28px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.04);
    transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.feature-icon {
    width: 56px;
    height: 56px;
    background: #dbeafe;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-size: 20px;
    color: #0a2540;
    margin-bottom: 12px;
}
.feature-card p {
    color: #64748b;
    font-size: 15px;
}

/* ===== Products Section ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.product-card {
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
}
.product-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}
.product-img {
    height: 240px;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 14px;
}
.product-info { padding: 22px; }
.product-info h3 {
    font-size: 18px;
    color: #0a2540;
    margin-bottom: 8px;
}
.product-info p {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 14px;
}
.product-link {
    color: #2563eb;
    font-weight: 600;
    font-size: 14px;
}

/* ===== About Section ===== */
.about-section { background: #f8fafc; }
.about-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-img {
    height: 380px;
    background: #e2e8f0;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
}
.about-text h2 {
    font-size: 34px;
    color: #0a2540;
    margin-bottom: 20px;
}
.about-text p {
    color: #475569;
    margin-bottom: 16px;
    font-size: 16px;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
}
.stat-item h4 {
    font-size: 32px;
    color: #2563eb;
    font-weight: 700;
}
.stat-item p {
    font-size: 14px;
    color: #64748b;
    margin: 0;
}

/* ===== CTA Banner ===== */
.cta-banner {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    color: #fff;
    padding: 70px 0;
    text-align: center;
}
.cta-banner h2 {
    font-size: 32px;
    margin-bottom: 14px;
}
.cta-banner p {
    opacity: 0.9;
    margin-bottom: 28px;
    font-size: 17px;
}
.cta-banner .btn-primary {
    background: #fff;
    color: #1e40af;
}

/* ===== Contact Page ===== */
.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
}
.contact-info h2 {
    font-size: 32px;
    color: #0a2540;
    margin-bottom: 16px;
}
.contact-info > p {
    color: #64748b;
    margin-bottom: 32px;
}
.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    align-items: flex-start;
}
.contact-icon {
    width: 44px;
    height: 44px;
    background: #dbeafe;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.contact-item h4 {
    font-size: 15px;
    color: #0a2540;
    margin-bottom: 4px;
}
.contact-item p {
    color: #475569;
    font-size: 15px;
    margin: 0;
}
.contact-form {
    background: #fff;
    padding: 36px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #334155;
    margin-bottom: 8px;
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: border-color 0.2s;
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.submit-btn {
    width: 100%;
    background: #2563eb;
    color: #fff;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.submit-btn:hover { background: #1d4ed8; }

/* ===== Page Header (inner pages) ===== */
.page-header {
    background: linear-gradient(135deg, #0a2540 0%, #1e40af 100%);
    color: #fff;
    padding: 70px 0;
    text-align: center;
}
.page-header h1 { font-size: 40px; margin-bottom: 10px; }
.page-header p { opacity: 0.85; font-size: 17px; }

/* ===== Footer ===== */
footer {
    background: #0a2540;
    color: #94a3b8;
    padding: 60px 0 24px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 20px;
}
.footer-col p, .footer-col li {
    font-size: 14px;
    line-height: 1.8;
    list-style: none;
}
.footer-col a:hover { color: #fff; }
.footer-logo {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}
.footer-logo span { color: #3b82f6; }
.footer-bottom {
    border-top: 1px solid #1e3a5f;
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 34px; }
    .hero { padding: 70px 0; }
    .features-grid, .products-grid { grid-template-columns: 1fr; }
    .about-wrap, .contact-wrap { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .section-title h2 { font-size: 28px; }
    .about-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 500px) {
    .footer-grid { grid-template-columns: 1fr; }
    .hero-buttons { flex-direction: column; align-items: flex-start; }
    .about-stats { grid-template-columns: 1fr 1fr; }
}