/* CSS Variables */
:root {
    /* Colors */
    --primary-color: #1E40AF;      /* Deep Blue */
    --secondary-color: #F97316;    /* Accent Orange */
    --steel-grey: #6B7280;         /* Steel Grey */
    --light-grey: #F3F4F6;         /* Light Grey */
    --white: #FFFFFF;
    --black: #1F2937;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.25rem;    /* 4px */
    --spacing-sm: 0.5rem;     /* 8px */
    --spacing-md: 1rem;       /* 16px */
    --spacing-lg: 1.5rem;     /* 24px */
    --spacing-xl: 2rem;       /* 32px */
    --spacing-2xl: 3rem;      /* 48px */
    --spacing-3xl: 4rem;      /* 64px */
    
    /* Layout */
    --max-width: 1200px;
    --border-radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
}

.nav-brand {
    display: flex;
    flex-direction: column;
}

.brand-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

.brand-subtitle {
    font-size: 0.875rem;
    color: var(--steel-grey);
    font-weight: var(--font-weight-medium);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--black);
    font-weight: var(--font-weight-medium);
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--black);
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    background: #1E3A8A;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
}
.btn-white {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}
.btn-white:hover {
    background: var(--white);
    color: var(--primary-color);
}

.process-container {
    max-width: 90%;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1E3A8A 100%);
    color: var(--white);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    z-index: 0;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: #E5E7EB;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2xl);
    color: #D1D5DB;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    animation: fadeInUp 1s ease 0.6s both;
}

/* Highlights Section */
.highlights {
    padding: var(--spacing-3xl) 0;
    background: var(--light-grey);
}

/* Slideshow Styles */
.slideshow-container {
    position: relative;
    max-width: 100%;
    margin: 0 auto var(--spacing-3xl);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.slideshow-wrapper {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide-image {
    /* width: 100%; */
    height: 100%;
    object-fit: cover;
}

.slide-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: var(--spacing-2xl);
    text-align: left;
}

.slide-overlay h3 {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.slide-overlay p {
    font-size: 1.125rem;
    margin: 0;
    opacity: 0.9;
}

/* Navigation arrows */
.slide-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--white);
    font-size: 2rem;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
}

.slide-nav:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.slide-nav.prev {
    left: var(--spacing-lg);
}

.slide-nav.next {
    right: var(--spacing-lg);
}

.slide-nav span {
    display: block;
    line-height: 1;
}

/* Slide indicators */
.slide-indicators {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--white);
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active,
.indicator:hover {
    background: var(--white);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.highlight-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.highlight-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.highlight-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    color: var(--steel-grey);
    font-size: 1.125rem;
}

/* About Section */
.about {
    padding: var(--spacing-3xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.7;
}

.about-intro {
    font-size: 1.25rem;
    font-weight: var(--font-weight-medium);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.about-certifications {
    margin-top: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.cert-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--light-grey);
    border-radius: var(--border-radius);
}

.cert-item strong {
    color: var(--primary-color);
}

.about-image img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

/* Infrastructure Section */
.infrastructure {
    padding: var(--spacing-3xl) 0;
    background: var(--light-grey);
}

.machinery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.machine-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.machine-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.machine-card.upcoming {
    border: 2px dashed var(--secondary-color);
}

.machine-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--light-grey);
}

.machine-header {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-lg);
}

.machine-header h3 {
    margin-bottom: var(--spacing-xs);
}

.machine-type {
    font-size: 0.875rem;
    opacity: 0.9;
}

.machine-specs {
    padding: var(--spacing-lg);
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--light-grey);
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-label {
    font-weight: var(--font-weight-medium);
    color: var(--steel-grey);
}

.spec-value {
    font-weight: var(--font-weight-semibold);
    color: var(--black);
    font-size: small;
}

/* Process Section */
.process {
    padding: var(--spacing-3xl) 0;
}

.process-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 150px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.step-content h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    font-size: 0.875rem;
    color: var(--steel-grey);
    margin: 0;
}

.process-arrow {
    font-size: 1.5rem;
    color: var(--steel-grey);
    font-weight: bold;
}

.quality-instruments {
    background: var(--light-grey);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-3xl);
}

.quality-instruments h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
}

.instruments-flex {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: center;
}

.instrument-item {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: column;
    box-shadow: var(--shadow);
}

.instrument-name {
    font-weight: var(--font-weight-semibold);
}

.instrument-accuracy {
    color: var(--secondary-color);
    font-weight: var(--font-weight-medium);
    font-size: 0.875rem;
}

/* Clients Section */
.clients {
    padding: var(--spacing-3xl) 0;
    background: var(--light-grey);
}

.clients-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.client-logo {
    background: var(--white);
    width: 200px;
    height: 200px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    padding: 1rem;
    overflow: hidden;
}

.client-logo:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.client-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.placeholder-logo {
    font-weight: var(--font-weight-semibold);
    color: var(--steel-grey);
    text-align: center;
}

/* Contact Section */
.contact {
    padding: var(--spacing-3xl) 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-2xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.map-placeholder {
    background: var(--light-grey);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius);
    text-align: center;
    border: 2px dashed var(--steel-grey);
}

.map-content h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

/* Form Styles */
.contact-form {
    background: var(--light-grey);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius);
}

.contact-form h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--black);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid #D1D5DB;
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* Footer */
.footer {
    background: var(--black);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h3,
.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: #D1D5DB;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #9CA3AF;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-credit {
    margin: 0;
}

.footer-credit a {
    color: #9CA3AF;
    text-decoration: none;
    transition: var(--transition);
}

.footer-credit a:hover {
    color: var(--secondary-color);
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .process-flow {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* Slideshow responsive */
    .slideshow-wrapper {
        height: 250px;
    }
    
    .slide-overlay {
        padding: var(--spacing-lg);
    }
    
    .slide-overlay h3 {
        font-size: 1.25rem;
    }
    
    .slide-overlay p {
        font-size: 0.875rem;
    }
    
    .slide-nav {
        font-size: 1.5rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .slide-nav.prev {
        left: var(--spacing-sm);
    }
    
    .slide-nav.next {
        right: var(--spacing-sm);
    }
    
    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    /* Grid adjustments */
    .highlights-grid,
    .machinery-grid,
    .instruments-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    /* Spacing adjustments */
    section {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero {
        min-height: 90vh;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .machinery-grid {
        grid-template-columns: 1fr;
    }
    
    .machine-card {
        min-width: unset;
    }
    
    .machine-image {
        height: 150px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}