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

:root {
    --black: #0a0a0a;
    --white: #fafafa;
    --gray: #6b6b6b;
    --gray-light: #e8e8e8;
    --charcoal: #1a1a1f;
    --slate: #2d3748;
    --accent: #4a5568;
    --blue-gray: #3d4f5f;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    color: var(--black);
    background-color: var(--white);
    font-weight: 300;
    letter-spacing: -0.01em;
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--charcoal);
    color: var(--white);
}

::-moz-selection {
    background-color: var(--charcoal);
    color: var(--white);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 2.5rem 4rem;
    background: linear-gradient(to bottom, rgba(250, 250, 250, 0.98), rgba(250, 250, 250, 0.92));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
}

.logo {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--charcoal);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10rem 4rem 6rem;
    position: relative;
    background: 
        linear-gradient(135deg, rgba(250, 250, 250, 0.92) 0%, rgba(250, 250, 250, 0.75) 50%, rgba(250, 250, 250, 0.85) 100%),
        url('background.jpg') center/cover no-repeat;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 80%, rgba(45, 55, 72, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(61, 79, 95, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--white), transparent);
    pointer-events: none;
}

.hero-content {
    max-width: 1600px;
    width: 100%;
    text-align: left;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(3.5rem, 9vw, 9rem);
    font-weight: 200;
    line-height: 0.92;
    letter-spacing: -0.05em;
    margin-bottom: 3.5rem;
    color: var(--charcoal);
    position: relative;
}

.hero h1::after {
    content: '';
    position: absolute;
    bottom: -1.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--slate), transparent);
    animation: revealLine 1.2s ease-out 0.6s forwards;
}

@keyframes revealLine {
    to {
        width: 120px;
    }
}

.hero-divider {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--slate), var(--accent));
    margin-bottom: 2.5rem;
    position: relative;
}

.hero-divider::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 8px;
    height: 2px;
    background: var(--blue-gray);
}

.hero-subtitle {
    font-size: clamp(0.9rem, 1.3vw, 1.1rem);
    font-weight: 400;
    color: var(--slate);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    position: relative;
    padding-left: 2rem;
}

.hero-subtitle::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 1px;
    background: var(--accent);
}

/* Services */
.services {
    max-width: 1600px;
    margin: 0 auto;
    padding: 14rem 4rem;
    display: flex;
    flex-direction: column;
    gap: 10rem;
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 4rem;
    left: 4rem;
    width: 1px;
    height: calc(100% - 8rem);
    background: linear-gradient(to bottom, transparent, var(--gray-light) 20%, var(--gray-light) 80%, transparent);
}

.service-item {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    padding-left: 4rem;
    position: relative;
    transition: transform 0.4s ease;
}

.service-item:hover {
    transform: translateX(8px);
}

.service-item::before {
    content: '';
    position: absolute;
    left: -4rem;
    top: 0.5rem;
    width: 8px;
    height: 8px;
    border: 1px solid var(--slate);
    background: var(--white);
    transition: all 0.3s ease;
}

.service-item:hover::before {
    background: var(--slate);
    transform: rotate(45deg);
}

.service-number {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    color: var(--accent);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.service-number::after {
    content: '';
    width: 40px;
    height: 1px;
    background: var(--gray-light);
}

.service-item h2 {
    font-size: clamp(2.2rem, 4.5vw, 4.5rem);
    font-weight: 200;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--charcoal);
}

.service-item p {
    font-size: clamp(1rem, 1.2vw, 1.125rem);
    font-weight: 300;
    color: var(--gray);
    line-height: 1.7;
    max-width: 550px;
}

/* Contact */
.contact {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 4rem 14rem;
    position: relative;
}

.contact::before {
    content: 'Kontakt aufnehmen';
    position: absolute;
    top: -3rem;
    left: 4rem;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--accent);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 2.5rem;
    text-decoration: none;
    color: var(--charcoal);
    font-size: clamp(1.5rem, 2.2vw, 2.2rem);
    font-weight: 300;
    letter-spacing: -0.02em;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--gray-light);
    width: 100%;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.contact-link::before {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--slate);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-link:hover::before {
    width: 100%;
}

.contact-link:hover {
    gap: 4rem;
    color: var(--charcoal);
}

.contact-link .arrow {
    font-size: 1.4em;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--slate);
}

.contact-link:hover .arrow {
    transform: translateX(1rem);
    color: var(--charcoal);
}

/* Footer */
footer {
    padding: 5rem 4rem;
    background: var(--charcoal);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--slate), transparent);
}

.footer-content {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content span {
    font-size: 0.8rem;
    font-weight: 400;
    color: rgba(250, 250, 250, 0.6);
    letter-spacing: 0.1em;
}

.footer-content::after {
    content: '© 2024';
    font-size: 0.75rem;
    font-weight: 400;
    color: rgba(250, 250, 250, 0.4);
    letter-spacing: 0.1em;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        padding: 1.5rem 2rem;
    }

    .hero {
        padding: 7rem 2rem 5rem;
        min-height: 85vh;
    }

    .hero-content {
        text-align: left;
    }

    .hero-subtitle {
        padding-left: 1.5rem;
    }

    .hero-subtitle::before {
        width: 8px;
    }

    .services {
        padding: 10rem 2rem;
        gap: 8rem;
    }

    .services::before {
        left: 2rem;
    }

    .service-item {
        padding-left: 3rem;
    }

    .service-item::before {
        left: -3rem;
    }

    .contact {
        padding: 0 2rem 10rem;
    }

    .contact::before {
        left: 2rem;
    }

    footer {
        padding: 4rem 2rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    header {
        padding: 1rem 1.5rem;
    }

    .hero {
        padding: 6rem 1.5rem 4rem;
    }

    .services {
        padding: 8rem 1.5rem;
        gap: 6rem;
    }

    .services::before {
        display: none;
    }

    .service-item {
        padding-left: 0;
    }

    .service-item::before {
        display: none;
    }

    .service-item:hover {
        transform: none;
    }

    .contact {
        padding: 0 1.5rem 8rem;
    }

    .contact::before {
        left: 1.5rem;
    }

    footer {
        padding: 3rem 1.5rem;
    }
}