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

:root {
    --primary: #0a2540;
    --primary-light: #1a3a5c;
    --accent: #00a3e0;
    --accent-dark: #0080b3;
    --bg-light: #f7f9fc;
    --bg-dark: #0a2540;
    --text: #2d3748;
    --text-light: #718096;
    --white: #ffffff;
    --border: #e2e8f0;
    --shadow: 0 4px 20px rgba(10, 37, 64, 0.08);
    --shadow-hover: 0 8px 30px rgba(10, 37, 64, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--text);
    background: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Header & Navigation ── */
header {
    background-color: var(--white);
    box-shadow: 0 1px 0 var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background-color: rgba(255,255,255,0.95);
}

.navbar {
    padding: 0.9rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.logo-sea {
    color: var(--accent);
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
    letter-spacing: 0.01em;
}

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

/* Nav CTA Button */
.nav-cta {
    background-color: var(--accent) !important;
    color: var(--white) !important;
    padding: 0.5rem 1.2rem !important;
    border-radius: 6px;
    transition: background-color 0.3s ease, transform 0.2s ease !important;
}

.nav-cta:hover {
    background-color: var(--accent-dark) !important;
    transform: translateY(-1px);
}

/* Dropdown Navigation */
.has-dropdown {
    position: relative;
}

.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-hover);
    min-width: 220px;
    padding: 0.5rem 0;
    list-style: none;
    z-index: 200;
}

.has-dropdown:hover .dropdown {
    display: block;
}

.dropdown li {
    padding: 0;
}

.dropdown li a {
    display: block;
    padding: 0.5rem 1.2rem;
    font-size: 0.85rem;
    color: var(--text);
    white-space: nowrap;
}

.dropdown li a:hover {
    background: var(--bg-light);
    color: var(--accent);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--primary);
    transition: 0.3s;
}

/* ── Hero Section ── */
.hero {
    background: linear-gradient(160deg, var(--primary) 0%, #0d3259 50%, var(--primary-light) 100%);
    color: var(--white);
    padding: 7rem 0 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.2rem;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.2rem;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.75);
    margin-bottom: 2.5rem;
    font-weight: 300;
}

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

.cta-button {
    display: inline-block;
    padding: 0.85rem 2.2rem;
    font-size: 0.95rem;
    font-weight: 600;
    border: 2px solid var(--accent);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    background-color: var(--accent);
    color: var(--white);
}

.cta-button:hover {
    background-color: var(--accent-dark);
    border-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 163, 224, 0.3);
}

.cta-outline {
    background-color: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.4);
}

.cta-outline:hover {
    background-color: rgba(255,255,255,0.1);
    border-color: var(--white);
    box-shadow: none;
}

/* ── Mission Section ── */
.mission {
    padding: 5rem 0;
    text-align: center;
    background: var(--white);
}

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

.mission-text {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--text-light);
}

.mission-text strong {
    color: var(--primary);
    font-weight: 600;
}

/* ── Section Shared ── */
.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.05rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ── Services Section ── */
.services {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.services h2 {
    text-align: center;
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.service-card {
    background-color: var(--white);
    padding: 2rem 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.service-card h3 {
    color: var(--primary);
    margin-bottom: 0.6rem;
    font-size: 1.05rem;
    font-weight: 600;
}

.service-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ── Products Section ── */
.products {
    padding: 5rem 0;
    background: var(--white);
}

.products h2 {
    text-align: center;
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.product-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 1rem;
}

.product-card {
    position: relative;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem 2rem 2rem;
    transition: box-shadow 0.3s ease;
}

.product-card:hover {
    box-shadow: var(--shadow-hover);
}

.product-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.2;
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    line-height: 1;
}

.product-card h3 {
    color: var(--primary);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.product-card ul {
    list-style: none;
    margin-bottom: 1rem;
}

.product-card ul li {
    position: relative;
    padding-left: 1.2rem;
    margin-bottom: 0.4rem;
    font-size: 0.92rem;
    color: var(--text);
}

.product-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.product-note {
    font-size: 0.88rem;
    color: var(--text-light);
    font-style: italic;
    border-top: 1px solid var(--border);
    padding-top: 0.75rem;
    margin-top: 0.5rem;
}

/* ── Industries Section ── */
.industries {
    padding: 4rem 0;
    background: var(--bg-dark);
    text-align: center;
}

.industries h2 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 2rem;
}

.industry-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
}

.tag {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    background: rgba(0, 163, 224, 0.15);
    border: 1px solid rgba(0, 163, 224, 0.3);
    border-radius: 50px;
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.3s;
}

.tag:hover {
    background: rgba(0, 163, 224, 0.25);
}

/* ── About Section ── */
.about {
    padding: 5rem 0;
    background: var(--white);
}

.about h2 {
    text-align: center;
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 3rem;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.about-item {
    padding: 2rem;
    border-left: 3px solid var(--accent);
}

.about-item h3 {
    color: var(--primary);
    margin-bottom: 0.6rem;
    font-size: 1.1rem;
}

.about-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ── Contact Section ── */
.contact {
    padding: 5rem 0;
    background: var(--bg-light);
    text-align: center;
}

.contact h2 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    gap: 3rem;
    justify-content: center;
    margin-top: 2rem;
}

.contact-item h3 {
    color: var(--primary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.3rem;
}

.contact-item a {
    color: var(--accent);
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 500;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* ── Footer ── */
footer {
    background-color: var(--bg-dark);
    color: rgba(255,255,255,0.6);
    padding: 3rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand p {
    font-size: 0.85rem;
    margin-top: 0.3rem;
}

.footer-brand .logo {
    color: var(--white);
}

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

.footer-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    font-size: 0.85rem;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1.5rem 24px;
        gap: 1rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

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

    /* Mobile dropdown */
    .dropdown {
        position: static;
        box-shadow: none;
        border: none;
        border-radius: 0;
        min-width: auto;
        padding-left: 1rem;
        display: none;
    }

    .dropdown.show {
        display: block;
    }

    .has-dropdown:hover .dropdown {
        display: none;
    }

    .dropdown.show {
        display: block !important;
    }

    .nav-cta {
        text-align: center;
        display: block !important;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

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

    .product-cards {
        grid-template-columns: 1fr;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .contact-info {
        flex-direction: column;
        gap: 1.5rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ── Animations ── */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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