/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Syne:wght@400;500;600;700;800&display=swap');

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

:root {
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-accent: #333333;
    --color-grey-light: #F5F5F5;
    --color-border: #E5E5E5;
    
    --font-heading: 'Syne', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --spacing-container: 1400px;
    --spacing-section: 8rem; /* 128px */
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 5rem); /* Responsive H1 */
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1.5rem;
    font-weight: 400;
    color: var(--color-accent);
}

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

/* Utilities */
.container {
    max-width: var(--spacing-container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.bg-black { background-color: var(--color-black); color: var(--color-white); }
.bg-white { background-color: var(--color-white); color: var(--color-black); }
.bg-grey { background-color: var(--color-grey-light); }

.text-white { color: var(--color-white); }
.text-black { color: var(--color-black); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: 1fr; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 768px) {
    .grid-cols-2, .grid-cols-3 { grid-template-columns: 1fr; }
}

/* Components */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.875rem;
    border: 2px solid var(--color-black);
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.05em;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--color-black);
}

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

.btn-white-outline {
    border-color: var(--color-white);
    color: var(--color-white);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 1.5rem 0;
}

.navbar .container {
    display: flex;
    justify-content: center; /* Center the content */
    align-items: center;
    position: relative; /* For absolute positioning of logo */
}

.logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.05em;
    position: absolute;
    left: 1.5rem; /* Desktop: Stick to left */
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
    align-items: center;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-link:hover {
    opacity: 0.6;
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (min-width: 769px) {
    .nav-links li:last-child {
        position: absolute;
        right: 1.5rem;
    }
}
@media (max-width: 768px) {
    .navbar .container {
        justify-content: space-between; /* Restore normal flex for mobile */
    }
    
    .logo {
        position: static; /* Remove absolute on mobile */
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid var(--color-border);
        text-align: center;
        gap: 1.5rem;
    }

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

    .mobile-toggle {
        display: block;
    }
}

/* Hero */
.hero {
    height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    text-align: center;
    background-size: cover;
    background-position: center;
    background-attachment: fixed; /* Parallax feel */
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4); /* Overlay for text readability */
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 2rem;
}

/* Services */
.service-card {
    border: 1px solid var(--color-border);
    padding: 2rem;
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-black);
}

.service-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    margin-bottom: 1.5rem;
    filter: grayscale(100%); /* B&W Theme */
    transition: filter 0.3s ease;
}

.service-card:hover .service-image {
    filter: grayscale(0%); /* Color on hover */
}

/* Referenzen / Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    group: relative;
}

.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    filter: grayscale(100%);
}

.gallery-item:hover .gallery-img {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 2rem;
    color: white;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

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

/* Contact Form */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--color-border);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: transparent;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-black);
}

/* Footer */
.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 4rem 0;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 4rem;
}

.footer h4 {
    margin-bottom: 1.5rem;
}

.footer ul {
    list-style: none;
}

.footer li {
    margin-bottom: 0.75rem;
}

.footer a:hover {
    color: #999;
}

.copyright {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 0.875rem;
    color: #666;
}