/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #0B3D91;
    --primary-dark: #072a66;
    --accent: #E63946;
    --dark: #1a1a2e;
    --gray-900: #212529;
    --gray-700: #495057;
    --gray-500: #6c757d;
    --gray-200: #e9ecef;
    --gray-100: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 4px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
    --radius: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--gray-700);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--white);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { color: var(--gray-900); line-height: 1.3; font-weight: 700; }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }

.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-header h2 { margin-bottom: 12px; }
.section-header .subtitle {
    font-size: 1.05rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}
.section-header .divider {
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* smaller subtitle inside section headers */
.section-header h2 small {
    font-size: 0.6em;
    color: var(--gray-500);
    font-weight: 400;
}

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

section {
    padding: 100px 0;
}

.bg-light { background: var(--gray-100); }
.bg-dark { background: var(--dark); color: var(--gray-200); }
.bg-dark h2, .bg-dark h3, .bg-dark h4 { color: var(--white); }

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: var(--transition);
}
.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.navbar .logo img {
    height: 48px;
}
.navbar .logo-text {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.navbar .logo-text span { color: var(--accent); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    color: var(--gray-700);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
}
.nav-links a:hover {
    color: var(--primary);
    background: rgba(11, 61, 145, 0.06);
}
.nav-links .btn-nav {
    background: var(--primary);
    color: var(--white);
    padding: 10px 24px;
    border-radius: 8px;
}
.nav-links .btn-nav:hover {
    background: var(--primary-dark);
    color: var(--white);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 8px;
}
.hamburger span {
    width: 24px;
    height: 2.5px;
    background: var(--gray-900);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0B3D91 0%, #1a5bc4 50%, #072a66 100%);
    overflow: hidden;
    padding-top: 72px;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('../images/slide1_Picture_7.png') center/cover no-repeat;
    opacity: 0.15;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}
.hero-content h1 {
    font-size: clamp(2.4rem, 5vw, 3.5rem);
    color: var(--white);
    margin-bottom: 8px;
    line-height: 1.15;
}
.hero-content .tagline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.hero-content p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: 40px;
    max-width: 520px;
    line-height: 1.8;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}
.btn-primary {
    background: var(--accent);
    color: var(--white);
}
.btn-primary:hover { background: #c1303c; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.3); }
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.1); }

.hero-image {
    display: flex;
    justify-content: center;
}
.hero-image img {
    width: 100%;
    max-width: 500px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.hero-stats {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
}
.stat-card {
    text-align: center;
    padding: 24px 16px;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius);
}
.stat-card .number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--white);
}
.stat-card .label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
    margin-top: 4px;
}

/* ===== ABOUT ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.about-image-wrapper {
    position: relative;
}
.about-image-wrapper img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}
.about-image-wrapper .accent-box {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 120px;
    height: 120px;
    background: var(--accent);
    border-radius: var(--radius);
    z-index: -1;
}
.about-text h2 { margin-bottom: 20px; }
.about-text p { margin-bottom: 16px; }
.about-text .highlight {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), #1a5bc4);
    color: var(--white);
    padding: 16px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    margin-top: 12px;
}

/* ===== VISION MISSION ===== */
.vm-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.vm-card {
    padding: 48px 40px;
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
    border-top: 4px solid var(--primary);
    transition: var(--transition);
}
.vm-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.vm-card.mission { border-top-color: var(--accent); }
.vm-card .icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}
.vm-card .icon.vision-icon { background: rgba(11,61,145,0.1); color: var(--primary); }
.vm-card .icon.mission-icon { background: rgba(230,57,70,0.1); color: var(--accent); }
.vm-card h3 { font-size: 1.4rem; margin-bottom: 16px; }
.vm-card p { color: var(--gray-500); }

/* ===== QUALITY ===== */
.quality-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
}
.quality-card {
    padding: 40px 32px;
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}
.quality-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--primary);
}
.quality-card .q-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #1a5bc4);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 20px;
}
.quality-card h4 { font-size: 1.15rem; margin-bottom: 12px; }
.quality-card p { font-size: 0.92rem; color: var(--gray-500); }

/* ===== MACHINERY ===== */
.machinery-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.machinery-text h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
}
.machinery-text > p {
    color: var(--gray-500);
    margin-bottom: 24px;
    line-height: 1.8;
}
.machinery-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 28px;
}
.machinery-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    font-size: 0.95rem;
    transition: var(--transition);
}
.machinery-list li:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-lg);
}
.machinery-list li .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
}
.machine-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 28px;
}
.machine-table thead th {
    background: var(--primary);
    color: var(--white);
    padding: 14px 18px;
    text-align: left;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.machine-table tbody td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.95rem;
    background: var(--white);
}
.machine-table tbody tr:last-child td { border-bottom: none; }
.machine-table tbody tr:hover { background: rgba(11,61,145,0.03); }

.machinery-visual {
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4 / 3;
}
.machinery-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius);
}
.scalability-note-center {
    padding: 28px 36px;
    background: var(--white);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    box-shadow: var(--shadow);
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.scalability-note-center h4 { font-size: 1.1rem; margin-bottom: 12px; color: var(--primary); }
.scalability-note-center p { font-size: 0.95rem; line-height: 1.8; }

/* ===== EXPERTISE ===== */
.expertise-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.expertise-card {
    padding: 40px;
    border-radius: var(--radius);
    transition: var(--transition);
}
.expertise-card:hover { transform: translateY(-4px); }
.expertise-card.leader {
    background: linear-gradient(135deg, var(--primary), #1a5bc4);
    color: var(--white);
    box-shadow: 0 12px 40px rgba(11,61,145,0.3);
}
.expertise-card.leader h3, .expertise-card.leader h4 { color: var(--white); margin-bottom: 20px; }
.expertise-card.leader p { color: rgba(255,255,255,0.85); }
.expertise-card.leader .exp-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}
.expertise-card.instruments {
    background: var(--white);
    box-shadow: var(--shadow);
}
.instrument-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 20px;
    list-style: none;
}
.instrument-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--gray-100);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}
.instrument-list li .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
}
.cmm-note {
    grid-column: span 2;
    background: rgba(230,57,70,0.06);
    border: 1px solid rgba(230,57,70,0.15);
}
.cmm-note .dot { background: var(--accent); }

/* ===== INFRASTRUCTURE ===== */
.infra-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.infra-card {
    text-align: center;
    padding: 40px 28px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    transition: var(--transition);
}
.infra-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-4px);
}
.infra-card .infra-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
}
.infra-card h4 { font-size: 1.1rem; margin-bottom: 8px; }
.infra-card p { font-size: 0.9rem; color: rgba(255,255,255,0.65); }

/* ===== CUSTOMERS ===== */
.customer-card {
    display: flex;
    align-items: center;
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
}
.customer-icon {
    flex-shrink: 0;
}
.customer-icon img {
    width: 200px;
    height: auto;
    object-fit: contain;
}
.customer-text {
    padding: 36px 40px;
    background: var(--white);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    box-shadow: var(--shadow);
}
.customer-text p {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--gray-700);
    font-weight: 400;
}
.customer-text p strong {
    color: var(--primary-dark);
    font-weight: 700;
}

/* ===== PRODUCTS ===== */
.products-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
}
.product-item {
    width: calc(25% - 30px);
    text-align: center;
    transition: var(--transition);
}
.product-item:hover {
    transform: translateY(-6px);
}
.product-item .product-img {
    width: 100%;
    max-height: 160px;
    object-fit: contain;
}

/* ===== WHY CHOOSE ===== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.why-card {
    display: flex;
    gap: 20px;
    padding: 32px;
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.why-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.why-card .why-num {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #1a5bc4);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
}
.why-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.why-card p { font-size: 0.9rem; color: var(--gray-500); }

/* ===== CTA ===== */
.cta-section {
    text-align: center;
    background: linear-gradient(135deg, var(--primary), #1a5bc4);
    padding: 80px 0;
}
.cta-section h2 { color: var(--white); margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.8); font-size: 1.15rem; margin-bottom: 36px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-section .btn-primary { background: var(--accent); font-size: 1.05rem; padding: 16px 40px; }

/* ===== CONTACT ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}
.contact-info h2 { margin-bottom: 24px; }
.contact-info p { margin-bottom: 32px; }
.contact-detail {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}
.contact-detail .c-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(11,61,145,0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}
.contact-detail h4 { font-size: 0.9rem; margin-bottom: 4px; }
.contact-detail p { font-size: 0.95rem; margin-bottom: 0; color: var(--gray-700); }

.contact-form-wrapper {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}
.contact-form-wrapper h3 {
    font-size: 1.3rem;
    margin-bottom: 28px;
    color: var(--gray-900);
}
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--gray-200);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--gray-900);
    background: var(--gray-100);
    transition: var(--transition);
    outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(11, 61, 145, 0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-500);
}
.form-group textarea {
    resize: vertical;
    min-height: 120px;
}
.btn-submit {
    width: 100%;
    text-align: center;
    padding: 14px 32px;
    font-size: 1rem;
    cursor: pointer;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.5);
    padding: 40px 0;
    text-align: center;
    font-size: 0.85rem;
}
.footer a { color: rgba(255,255,255,0.7); text-decoration: none; }
.footer a:hover { color: var(--white); }

/* ===== SCROLL ANIMATIONS ===== */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-content p { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .hero-image { display: none; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .vm-grid { grid-template-columns: 1fr; }
    .quality-content { grid-template-columns: 1fr; }
    .machinery-wrapper { grid-template-columns: 1fr; }
    .expertise-grid { grid-template-columns: 1fr; }
    .instrument-list { grid-template-columns: 1fr; }
    .cmm-note { grid-column: span 1; }
    .infra-cards { grid-template-columns: 1fr; }
    .customer-card { flex-direction: column; text-align: center; gap: 28px; }
    .customer-text { border-left: none; border-top: 4px solid var(--primary); border-radius: 0 0 var(--radius) var(--radius); padding: 28px 24px; }
    .product-item { width: calc(33.33% - 22px); }
    .why-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    section { padding: 60px 0; }
    .nav-links { display: none; }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0; right: 0;
        background: var(--white);
        padding: 16px 24px;
        box-shadow: 0 8px 24px rgba(0,0,0,0.1);
        border-radius: 0 0 var(--radius) var(--radius);
    }
    .hamburger { display: flex; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-card { padding: 16px 12px; }
    .stat-card .number { font-size: 1.6rem; }
    .product-item { width: calc(50% - 12px); }
    .product-item .product-img { max-height: 160px; }
}

@media (max-width: 480px) {
    .hero-stats { grid-template-columns: 1fr 1fr; }
    .customer-card { padding: 28px 20px; gap: 20px; }
    .customer-icon img { width: 80px; }
    .customer-text { padding-top: 20px; }
}