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

:root {
    --primary: #003366;
    --primary-light: #004a99;
    --accent: #00b4d8;
    --accent-glow: rgba(0, 180, 216, 0.4);
    --dark: #0a0e17;
    --dark-card: #111827;
    --dark-surface: #1a2236;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --white: #ffffff;
    --gradient-1: linear-gradient(135deg, #003366 0%, #00b4d8 100%);
    --gradient-2: linear-gradient(135deg, #0a0e17 0%, #1a2236 50%, #003366 100%);
    --radius: 16px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--dark);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

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

a:hover {
    color: var(--white);
}

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

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

/* ── NAVBAR ── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 14, 23, 0.92);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

.navbar-brand {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    padding-bottom: 4px;
}

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

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── HERO ── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(0,51,102,0.3) 0%, rgba(10,14,23,0.85) 70%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 180, 216, 0.1);
    border: 1px solid rgba(0, 180, 216, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.2s;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--white);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.4s;
}

.hero h1 .highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.6s;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.8s;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--white);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.2);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator span::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--accent);
    border-radius: 2px;
    animation: scrollDot 2s infinite;
}

/* ── SECTIONS ── */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ── ABOUT CARDS ── */
.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.about-card {
    background: var(--dark-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 180, 216, 0.1);
}

.about-card-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
}

.about-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.about-card:hover .about-card-image img {
    transform: scale(1.08);
}

.about-card-body {
    padding: 32px;
}

.about-card-body h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.about-card-body p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ── CONCEPTS ── */
.concepts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.concept-card {
    background: var(--dark-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.concept-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.concept-card:hover::before {
    transform: scaleX(1);
}

.concept-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 180, 216, 0.15);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.concept-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: rgba(0, 180, 216, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 20px;
    transition: background var(--transition);
}

.concept-card:hover .concept-icon {
    background: rgba(0, 180, 216, 0.2);
}

.concept-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.concept-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ── PRODUCTS ── */
.product-showcase {
    background: var(--dark-surface);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
}

.product-visual {
    position: relative;
    height: 100%;
    min-height: 400px;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.product-visual::before {
    content: '';
    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='0.06'%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");
}

.product-logo-text {
    position: relative;
    z-index: 1;
    font-size: 4rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -2px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.product-info {
    padding: 60px 48px;
}

.product-info h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
}

.product-info p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 32px;
}

/* ── FLOATING SHAPES (bg decoration) ── */
.bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.08;
    pointer-events: none;
}

.bg-shape-1 {
    width: 500px;
    height: 500px;
    background: var(--accent);
    top: -150px;
    right: -150px;
}

.bg-shape-2 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    bottom: -100px;
    left: -100px;
}

/* ── FOOTER ── */
.footer {
    background: var(--dark-card);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 80px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
}

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

.footer-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
    max-width: 360px;
}

.footer-heading {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 24px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--transition), padding-left var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-contact-item + .footer-contact-item {
    margin-top: 16px;
}

.footer-contact-icon {
    font-size: 1.1rem;
    min-width: 20px;
    text-align: center;
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ── ANIMATIONS ── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-12px);
    }
    60% {
        transform: translateX(-50%) translateY(-6px);
    }
}

@keyframes scrollDot {
    0% { top: 8px; opacity: 1; }
    100% { top: 22px; opacity: 0; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

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

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

    .product-visual {
        min-height: 280px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 72px 0;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(10, 14, 23, 0.98);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        padding: 40px;
        transition: right 0.4s ease;
        box-shadow: -10px 0 40px rgba(0,0,0,0.5);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-links a {
        font-size: 1.1rem;
    }

    .hamburger {
        display: flex;
        z-index: 1001;
    }

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

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

    .product-info {
        padding: 40px 28px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

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

    .section-title {
        font-size: 1.6rem;
    }

    .concept-card {
        padding: 28px 20px;
    }

    .product-logo-text {
        font-size: 2.5rem;
    }

    .product-info h3 {
        font-size: 1.5rem;
    }
}