:root {
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --primary-color: #0ea5e9;
    --primary-hover: #0284c7;
    --secondary-color: #6366f1;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --spacing-container: 1200px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--spacing-container);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
}

.logo img {
    height: 40px;
    width: auto;
    border-radius: 50%; /* Assume circular logo */
    object-fit: cover;
}

.nav-list {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-list a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.nav-list a:hover, .nav-list a.active {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-color);
    transition: 0.3s;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white !important;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: background 0.3s, border-color 0.3s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--text-color);
}

/* Hero Section */
.hero {
    padding-top: 160px;
    padding-bottom: 100px;
    position: relative;
    overflow: hidden;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

/* Abstract Background Shapes */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, rgba(15, 23, 42, 0) 70%);
    z-index: -1;
    filter: blur(60px);
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
    z-index: -1;
    filter: blur(60px);
}

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

.hero-subtitle {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* Sections General */
.section {
    padding: 100px 0;
}

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

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-header.center {
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin-bottom: 20px;
    border-radius: 2px;
}

.section-header.center .section-line {
    margin-left: auto;
    margin-right: auto;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* About Grid */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 0.8fr;
    gap: 60px;
    align-items: start;
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-muted);
}

.about-text p {
    margin-bottom: 20px;
}

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

.docs-preview {
    margin-top: 32px;
    padding: 24px;
    background: var(--surface-color);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.docs-preview h3 {
    margin-bottom: 16px;
    font-size: 1.1rem;
    color: var(--text-color);
}

.docs-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.doc-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    font-size: 0.9rem;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.doc-link:hover {
    background: rgba(14, 165, 233, 0.1);
    border-color: rgba(14, 165, 233, 0.3);
    color: var(--primary-color);
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.stat-item {
    background: var(--surface-color);
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s;
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--surface-color);
    padding: 40px 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: default;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

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

/* Portfolio */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.portfolio-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    background: var(--surface-color);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-item:hover img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(15,23,42,0.95), transparent);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
    transform: translateY(0);
}

.portfolio-title {
    font-weight: 600;
    font-size: 1rem;
    color: white;
}

/* Footer */
.footer {
    background: var(--surface-color);
    padding: 80px 0 30px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 24px;
    color: var(--text-color);
}

.footer-col p {
    color: var(--text-muted);
    margin-bottom: 10px;
}

.vat-info {
    font-family: monospace;
    color: var(--primary-color) !important;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--text-muted);
}

.contact-list a:hover {
    color: var(--primary-color);
}

.contact-list svg {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 968px) {
    .hero-title {
        font-size: 2.75rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none; /* simple native implementation later via js */
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding-top: 120px;
        text-align: center;
    }
    
    .hero-content {
        margin: 0 auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Mobile Menu Active State (JS) */
.nav.active .nav-list {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--surface-color);
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}