/* ===== CSS Variables ===== */
:root {
    --primary: #1a365d;
    --primary-light: #2c5282;
    --accent: #ed8936;
    --accent-light: #f6ad55;
    --text: #1a202c;
    --text-light: #4a5568;
    --text-muted: #718096;
    --bg: #f7fafc;
    --bg-alt: #edf2f7;
    --white: #ffffff;
    --border: #e2e8f0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: Georgia, 'Times New Roman', serif;
    font-weight: 600;
    line-height: 1.25;
    color: var(--primary);
}

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

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

ul {
    list-style: none;
}

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

/* ===== Section ===== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(28px, 4vw, 44px);
    color: var(--primary);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary);
}

.btn-full {
    width: 100%;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.nav.scrolled {
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-logo-text {
    font-family: 'Playfair Display', serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.nav-menu {
    display: flex;
    gap: 36px;
}

.nav-menu a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--primary);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1200px;
    height: 100%;
    z-index: 1;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0;
    transition: opacity 1.5s ease;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-bg-image.active {
    opacity: 0.8;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    background: linear-gradient(180deg, rgba(26, 54, 93, 0.88) 0%, rgba(44, 82, 130, 0.7) 50%, rgba(74, 85, 104, 0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 3;
    padding: 0 24px;
    max-width: 800px;
}

.hero-kicker {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(40px, 8vw, 80px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.7;
    animation: bounce 2s ease-in-out infinite;
}

.hero-scroll span {
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--white);
    border-bottom: 2px solid var(--white);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text p {
    font-size: 17px;
    color: var(--text-light);
    margin-bottom: 20px;
}

.about-text strong {
    color: var(--primary);
}

.about-logo {
    max-width: 220px;
    margin-bottom: 24px;
    border-radius: var(--radius-sm);
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.highlight-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--accent);
}

.highlight-number {
    font-family: 'Playfair Display', serif;
    font-size: 48px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}

.highlight-label {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    line-height: 1.4;
}

/* ===== Timeline ===== */
.timeline {
    background: var(--white);
}

.timeline-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent), var(--primary));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding: 0 0 40px 60px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -9px;
    top: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--white);
    border: 3px solid var(--accent);
}

.timeline-year {
    font-family: 'Playfair Display', serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-size: 20px;
    margin-bottom: 6px;
}

.timeline-content p {
    font-size: 16px;
    color: var(--text-light);
}

/* ===== Products ===== */
.products {
    background: var(--bg);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

/* ===== Production Section ===== */
.production {
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.production-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.production-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.production-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.production-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.production-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.production-card p {
    font-size: 14px;
    color: var(--text-light);
    flex: 1;
}

.product-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.product-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.product-card p {
    font-size: 14px;
    color: var(--text-light);
    flex: 1;
}

/* ===== Service Areas ===== */
.service-areas {
    background: var(--white);
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}

.area-card {
    padding: 16px 20px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.area-card:hover {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
}

/* ===== Contact ===== */
.contact {
    background: var(--bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    font-size: 16px;
    color: var(--primary);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 15px;
    color: var(--text-light);
}

.contact-form {
    background: var(--white);
    padding: 36px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(237, 137, 54, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Footer ===== */
.footer {
    background: var(--primary);
    color: var(--white);
    padding: 60px 0 0;
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(44, 82, 130, 0.4);
    border: none;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(44, 82, 130, 0.5);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* ===== Image Lightbox ===== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-img {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
    background: none;
    border: none;
    z-index: 2001;
}

.lightbox-close:hover {
    color: var(--accent);
    transform: scale(1.2);
}

.lightbox-caption {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 16px;
    text-align: center;
    max-width: 80%;
    z-index: 2001;
}

@media (max-width: 768px) {
    .lightbox-img {
        max-width: 95%;
        max-height: 80vh;
    }

    .lightbox-close {
        top: 10px;
        right: 15px;
        font-size: 30px;
    }

    .lightbox-caption {
        bottom: 15px;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 20px;
    }
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
    font-size: 24px;
    color: var(--white);
    margin-bottom: 8px;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-logo-img {
    max-width: 200px;
    margin-bottom: 12px;
}

.footer-tagline {
    font-size: 13px;
    color: var(--accent);
    margin-top: 8px;
    font-weight: 500;
}

.footer-links h4,
.footer-contact h4 {
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--white);
    margin-bottom: 16px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 6px;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== Responsive ===== */
@media (max-width: 968px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-highlights {
        order: -1;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        margin-bottom: 20px;
    }
}

@media (max-width: 768px) {
    .nav-logo-img {
        height: 32px;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .section {
        padding: 60px 0;
    }

    .highlight-card {
        padding: 20px;
    }

    .highlight-number {
        font-size: 36px;
    }

    .timeline-container::before {
        left: 15px;
    }

    .timeline-item {
        padding-left: 40px;
    }

    .timeline-item::before {
        left: 6px;
    }

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

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

    .contact-form {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

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

    .footer-content {
        gap: 24px;
    }
}