/* ===================================
   CSS Variables - Professional Color Scheme
   =================================== */
:root {
    /* Primary Colors - Blues */
    --color-primary-dark: #1e3a8a;
    --color-primary: #3b82f6;
    --color-primary-light: #60a5fa;
    
    /* Secondary Colors - Grays */
    --color-gray-dark: #374151;
    --color-gray: #6b7280;
    --color-gray-light: #d1d5db;
    --color-gray-lighter: #f3f4f6;
    
    /* Accent Colors */
    --color-white: #ffffff;
    --color-off-white: #f9fafb;
    
    /* Typography */
    --font-heading: Georgia, 'Times New Roman', serif;
    --font-body: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Container */
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-gray-dark);
    background-color: var(--color-white);
}

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

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

ul {
    list-style: none;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    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;
}

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

/* ===================================
   Language Toggle System
   =================================== */
[data-lang="nl"] {
    display: none;
}

[data-lang="en"] {
    display: none;
}

body.lang-nl [data-lang="nl"] {
    display: block;
}

body.lang-nl [data-lang="en"] {
    display: none;
}

body.lang-en [data-lang="en"] {
    display: block;
}

body.lang-en [data-lang="nl"] {
    display: none;
}

/* Inline elements */
body.lang-nl a[data-lang="nl"],
body.lang-nl span[data-lang="nl"] {
    display: inline;
}

body.lang-en a[data-lang="en"],
body.lang-en span[data-lang="en"] {
    display: inline;
}

/* ===================================
   Header
   =================================== */
.header {
    background-color: var(--color-white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.logo h1 {
    font-size: 1.5rem;
    color: var(--color-primary-dark);
    font-weight: 700;
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-gray-dark);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

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

/* Language Toggle */
.language-toggle {
    display: flex;
    gap: 0.25rem;
    background-color: var(--color-gray-lighter);
    padding: 0.25rem;
    border-radius: 6px;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: none;
    background-color: transparent;
    color: var(--color-gray);
    font-weight: 600;
    cursor: pointer;
    border-radius: 4px;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
}

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

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

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('../images/hero-finance-professional.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-md);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.85) 0%, rgba(59, 130, 246, 0.75) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    line-height: 1.5;
}

.hero-tagline {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    font-style: italic;
    opacity: 0.95;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 6px;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-off-white);
}

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary-dark);
}

.about-subtitle {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.about-description {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-dark);
}

.admin-office-intro {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.admin-office-title {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.admin-office-text {
    line-height: 1.8;
    color: var(--color-gray-dark);
    font-size: 1.125rem;
}

.mission {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 8px;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.mission-title {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.mission-text {
    line-height: 1.8;
    color: var(--color-gray-dark);
}

.service-areas {
    margin-top: var(--spacing-lg);
}

.areas-title {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.areas-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.areas-list li {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.9rem;
}

.about-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

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

/* ===================================
   Services Section
   =================================== */
.services {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

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

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-normal);
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-lg);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.service-image {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

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

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

.service-title {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
    font-size: 1.75rem;
}

.service-tagline {
    font-style: italic;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

.service-description {
    line-height: 1.8;
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-md);
}

.use-cases {
    margin-top: var(--spacing-lg);
    background-color: var(--color-gray-lighter);
    padding: var(--spacing-lg);
    border-radius: 8px;
}

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

.use-cases-list {
    list-style: disc;
    padding-left: var(--spacing-lg);
}

.use-cases-list li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    color: var(--color-gray-dark);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-white);
}

.contact .section-title {
    text-align: center;
    color: var(--color-white);
    margin-bottom: var(--spacing-xl);
}

.contact-content {
    max-width: 900px;
    margin: 0 auto;
}

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

.contact-tagline {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
    font-style: italic;
    opacity: 0.95;
}

.contact-heading {
    font-size: 2rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.contact-subheading {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.contact-message {
    font-size: 1.125rem;
    font-style: italic;
    opacity: 0.95;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.contact-item {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg);
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.contact-label {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    opacity: 0.9;
}

.contact-link {
    font-size: 1.25rem;
    color: var(--color-white);
    font-weight: 600;
    transition: opacity var(--transition-fast);
}

.contact-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.contact-locations {
    margin-top: var(--spacing-xl);
}

.locations-title {
    text-align: center;
    font-size: 1.75rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.locations-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.location-card {
    background-color: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-lg);
    border-radius: 8px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.location-card:hover {
    background-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-4px);
}

.location-name {
    font-size: 1.25rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.location-phone {
    color: var(--color-white);
    font-size: 1rem;
    transition: opacity var(--transition-fast);
}

.location-phone:hover {
    opacity: 0.8;
    text-decoration: underline;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-company {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.footer-owner {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xs);
}

.footer-locations {
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-link {
    color: var(--color-white);
    font-size: 1.125rem;
    transition: opacity var(--transition-fast);
}

.footer-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
}

.footer-copyright {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        grid-template-columns: 1fr;
    }
    
    .service-image {
        height: 250px;
    }
    
    .locations-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile (below 768px) */
@media (max-width: 767px) {
    :root {
        --spacing-3xl: 3rem;
    }
    
    .header-content {
        flex-wrap: wrap;
    }
    
    .nav {
        order: 3;
        width: 100%;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
    }
    
    .nav-link {
        display: block;
        width: 100%;
        text-align: center;
    }
    
    .hero {
        min-height: 500px;
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-tagline {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-subtitle {
        font-size: 1.25rem;
    }
    
    .about-description {
        font-size: 1rem;
    }
    
    .service-card {
        grid-template-columns: 1fr;
    }
    
    .service-image {
        height: 200px;
    }
    
    .service-title {
        font-size: 1.5rem;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .locations-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* Small Mobile (below 480px) */
@media (max-width: 479px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .contact-tagline {
        font-size: 1.25rem;
    }
    
    .contact-heading {
        font-size: 1.5rem;
    }
    
    .contact-subheading {
        font-size: 1.25rem;
    }
}