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

body {
    font-family: 'Inter', sans-serif;
    background: white;
    color: #111;
}

/* ========== HEADER & RESPONSIVE NAVBAR ========== */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: white;
    z-index: 1000;
    border-bottom: 1px solid #f0f0f0;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.8rem;
    color: #dc2626;
    font-weight: 800;
    transform: rotate(45deg);
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 800;
    color: #111;
}

.logo-text span {
    font-weight: 400;
    color: #666;
}

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

.nav-link {
    text-decoration: none;
    color: #444;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: #dc2626;
}

.quote-btn {
    background: #dc2626;
    color: white;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.quote-btn:hover {
    background: #b91c1c;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: #111;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 900px) {
    .header-container {
        padding: 1rem 1.5rem;
    }

    .hamburger {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        transition: left 0.3s ease;
        z-index: 999;
    }

    .nav.active {
        left: 0;
    }

    .nav-link {
        font-size: 1.2rem;
    }

    .quote-btn {
        display: none;
    }
}

/* ========== TECHNOLOGY HERO ========== */
.tech-hero {
    background: #0a0a0a;
    padding: 8rem 0 5rem;
    text-align: center;
}

.tech-hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.tech-hero-label {
    font-size: 0.7rem;
    letter-spacing: 3px;
    color: #dc2626;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.tech-hero-title {
    font-size: 3rem;
    font-weight: 600;
    color: white;
    letter-spacing: -1px;
    margin-bottom: 1rem;
}

.tech-hero-title .red-text {
    color: #dc2626;
}

.tech-hero-line {
    width: 60px;
    height: 2px;
    background: #dc2626;
    margin: 0 auto 1rem;
}

.tech-hero-text {
    font-size: 0.9rem;
    color: #888;
}

/* ========== CONTAINER ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========== SENSOR CATEGORIES ========== */
.sensor-categories {
    padding: 5rem 0;
    background: white;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.category-card {
    background: #fafafa;
    border-left: 3px solid #dc2626;
    padding: 2rem;
}

.category-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.category-number {
    font-size: 0.8rem;
    font-weight: 600;
    color: #dc2626;
    font-family: monospace;
}

.category-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #111;
}

.category-list {
    list-style: none;
}

.category-list li {
    font-size: 0.85rem;
    color: #555;
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.category-list li:last-child {
    border-bottom: none;
}

/* ========== INTEGRATED SYSTEMS ========== */
.integrated-systems {
    padding: 5rem 0;
    background: #f5f5f5;
}

.section-label {
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: #dc2626;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    color: #111;
    letter-spacing: -0.5px;
    margin-bottom: 1rem;
}

.red-text {
    color: #dc2626;
}

.systems-line {
    width: 50px;
    height: 2px;
    background: #dc2626;
    margin: 1rem 0 0;
}

.systems-header {
    margin-bottom: 3rem;
}

.systems-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.system-item {
    background: white;
    padding: 1.5rem;
    border-top: 3px solid #dc2626;
}

.system-number {
    font-size: 1.2rem;
    color: #dc2626;
    margin-bottom: 1rem;
}

.system-item h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #111;
    margin-bottom: 0.5rem;
}

.system-item p {
    font-size: 0.75rem;
    color: #666;
    line-height: 1.5;
}

/* ========== EQUIPMENT SPECIFICATIONS ========== */
.equipment-specs {
    padding: 5rem 0;
    background: white;
}

.specs-header {
    margin-bottom: 3rem;
}

.specs-line {
    width: 50px;
    height: 2px;
    background: #dc2626;
    margin: 1rem 0 0;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.spec-card {
    background: #fafafa;
    padding: 1.5rem;
    border-left: 2px solid #dc2626;
}

.spec-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #111;
    margin-bottom: 0.5rem;
}

.spec-card p {
    font-size: 0.8rem;
    color: #555;
    margin-bottom: 0.3rem;
}

.spec-note {
    font-size: 0.7rem;
    color: #888;
    font-style: italic;
}

/* ========== HARDWARE & SOFTWARE ========== */
.hardware-software {
    padding: 5rem 0;
    background: #f5f5f5;
}

.hs-header {
    margin-bottom: 3rem;
}

.hs-line {
    width: 50px;
    height: 2px;
    background: #dc2626;
    margin: 1rem 0 0;
}

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

.hs-card {
    background: white;
    padding: 2rem;
    border-top: 3px solid #dc2626;
}

.hs-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #111;
    margin-bottom: 1rem;
}

.hs-card ul {
    list-style: none;
}

.hs-card li {
    font-size: 0.8rem;
    color: #555;
    padding: 0.4rem 0;
    padding-left: 1.2rem;
    position: relative;
}

.hs-card li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: #dc2626;
}

/* ========== FOOTER ========== */
.footer {
    background: #050505;
    padding: 4rem 0 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-logo-icon {
    font-size: 1.5rem;
    color: #dc2626;
    transform: rotate(45deg);
}

.footer-logo span {
    font-size: 1.1rem;
    font-weight: 800;
    color: white;
}

.footer-logo span span {
    font-weight: 400;
    color: #666;
}

.footer-description {
    font-size: 0.8rem;
    color: #777;
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 0.8rem;
    font-weight: 700;
    color: #dc2626;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: #888;
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #dc2626;
}

.footer-contact-list {
    list-style: none;
}

.footer-contact-list li {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 0.8rem;
    line-height: 1.5;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #111;
    font-size: 0.7rem;
    color: #555;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }

    .systems-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .tech-hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 600px) {
    .systems-grid {
        grid-template-columns: 1fr;
    }

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

    .category-card {
        padding: 1.5rem;
    }

    .hs-card {
        padding: 1.5rem;
    }
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
    border-radius: 10px;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 800;
    color: #111;
}

.logo-text span {
    font-weight: 400;
    color: #666;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .logo-img {
        height: 35px;
    }

    .logo-text {
        font-size: 1rem;
    }
}