/* ========================================
   TechniVorm Industrial Components B.V.
   Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
    /* Primary Colors - Industrial/Metal Theme */
    --color-primary: #2d3748;       /* Dark steel grey */
    --color-primary-light: #4a5568; /* Medium grey */
    --color-primary-dark: #1a202c;  /* Almost black */

    /* Accent Colors - Blue from logo */
    --color-accent: #2b7de9;        /* Primary blue */
    --color-accent-light: #4da3ff;  /* Light blue */
    --color-accent-dark: #1a5bb8;   /* Dark blue */

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-off-white: #f7f8fa;
    --color-light-grey: #e2e8f0;
    --color-medium-grey: #a0aec0;
    --color-text: #2d3748;
    --color-text-light: #718096;

    /* Metallic accents */
    --gradient-metal: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-steel: linear-gradient(180deg, #e8e8e8 0%, #b8b8b8 50%, #d4d4d4 100%);

    /* Typography */
    --font-primary: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
}

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

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

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

a:hover {
    color: var(--color-accent-dark);
}

ul, ol {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary-dark);
}

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

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

p:last-child {
    margin-bottom: 0;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

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

.logo img {
    height: 50px;
    width: auto;
}

.nav {
    display: flex;
    align-items: center;
}

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

.nav-link {
    font-weight: 500;
    color: var(--color-primary);
    padding: var(--spacing-sm) 0;
    position: relative;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

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

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-primary);
    margin: 5px 0;
    transition: var(--transition-normal);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

/* Hero with background image */
.hero-with-image {
    padding: 0;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-with-image::before {
    display: none;
}

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

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

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 32, 44, 0.85) 0%, rgba(45, 55, 72, 0.75) 100%);
}

.hero-with-image .container {
    position: relative;
    z-index: 2;
    padding-top: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero h1 {
    color: var(--color-white);
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-light-grey);
    margin-bottom: var(--spacing-xl);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    font-size: 0.875rem;
    color: var(--color-light-grey);
}

.hero-badge svg {
    width: 20px;
    height: 20px;
    fill: var(--color-accent-light);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 500;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

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

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

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

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

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

.btn-outline:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-light {
    background: var(--color-off-white);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

.section-header p {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section-dark .section-header h2 {
    color: var(--color-white);
}

.section-dark .section-header p {
    color: var(--color-light-grey);
}

/* ========================================
   Features / Stats Grid
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--color-accent);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    fill: var(--color-white);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.stat-item p {
    color: var(--color-text-light);
    font-size: 1rem;
}

/* ========================================
   Product Categories Grid
   ======================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.product-card {
    background: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-light-grey);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-accent);
}

.product-card-image {
    height: 180px;
    background: var(--gradient-steel);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-card-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(43, 125, 233, 0.1) 0%, rgba(26, 91, 184, 0.1) 100%);
}

.product-card-image svg {
    width: 60px;
    height: 60px;
    fill: var(--color-primary);
    opacity: 0.6;
    position: relative;
    z-index: 1;
}

.product-card-content {
    padding: var(--spacing-lg);
}

.product-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.product-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.product-card-link {
    font-weight: 500;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.product-card-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: transform var(--transition-fast);
}

.product-card:hover .product-card-link svg {
    transform: translateX(4px);
}

/* ========================================
   About Page
   ======================================== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-image {
    background: var(--gradient-steel);
    border-radius: 8px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.about-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(43, 125, 233, 0.2) 0%, transparent 100%);
    z-index: 1;
}

.about-image svg {
    width: 120px;
    height: 120px;
    fill: var(--color-primary);
    opacity: 0.4;
}

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

.about-image.has-image::before {
    display: none;
}

.about-content h2 {
    margin-bottom: var(--spacing-lg);
}

.about-content p {
    color: var(--color-text-light);
}

/* Values */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.value-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.value-icon {
    width: 80px;
    height: 80px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.value-icon svg {
    width: 40px;
    height: 40px;
    fill: var(--color-white);
}

.value-card h3 {
    margin-bottom: var(--spacing-sm);
}

.value-card p {
    color: var(--color-text-light);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--color-light-grey);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 30px);
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 30px);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border-radius: 50%;
    border: 3px solid var(--color-white);
    box-shadow: var(--shadow-md);
}

.timeline-content {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    max-width: 350px;
}

.timeline-content h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.timeline-content h3 {
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* ========================================
   Contact Page
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info h2 {
    margin-bottom: var(--spacing-lg);
}

.contact-info > p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    background: var(--color-accent);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--color-white);
}

.contact-item-content h4 {
    margin-bottom: var(--spacing-xs);
}

.contact-item-content p,
.contact-item-content a {
    color: var(--color-text-light);
}

.contact-item-content a:hover {
    color: var(--color-accent);
}

.contact-map {
    background: var(--color-light-grey);
    border-radius: 8px;
    overflow: hidden;
    min-height: 400px;
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    min-height: 400px;
    border: none;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-primary-dark);
    color: var(--color-light-grey);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand img {
    height: 50px;
    width: auto;
    margin-bottom: var(--spacing-md);
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.footer-certification {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    font-size: 0.8rem;
}

.footer-certification svg {
    width: 16px;
    height: 16px;
    fill: var(--color-accent-light);
}

.footer h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-medium-grey);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer-bottom p {
    margin: 0;
}

/* ========================================
   Page Headers
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.page-header h1 {
    color: var(--color-white);
    position: relative;
    z-index: 1;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    position: relative;
    z-index: 1;
    color: var(--color-light-grey);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: var(--color-accent);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.cta-section .btn-secondary {
    border-color: var(--color-white);
}

.cta-section .btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-accent);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .about-image {
        height: 300px;
    }

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

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .hero h1 {
        font-size: 2.25rem;
    }

    .nav-toggle {
        display: block;
    }

    .nav-list {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        display: none;
    }

    .nav-list.active {
        display: flex;
    }

    .nav-link {
        padding: var(--spacing-sm) 0;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 50px;
        padding-right: 0;
        justify-content: flex-start;
    }

    .timeline-item::before {
        left: 20px;
    }

    .timeline-content {
        max-width: none;
    }

    .stat-item h3 {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }

    .hero {
        padding: var(--spacing-2xl) 0;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
    }
}