/* Valtrix Design System */
:root {
    /* Colors */
    --bg-dark: #0a0f1c;
    /* Deep Navy/Black */
    --bg-card: #111827;
    /* Slightly lighter for cards */
    --primary: #00f2ff;
    /* Cyan/Electric Blue */
    --secondary: #ffffff;
    /* White */
    --text-main: #e5e7eb;
    /* Light Gray for text */
    --text-muted: #9ca3af;
    /* Muted Gray */
    --accent: #3b82f6;
    /* Blue accent */

    /* Typography */
    --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

/* Header */
#header {
    position: fixed;
    top: 20px;
    /* Floating effect */
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    height: 70px;
    background: rgba(10, 15, 28, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50px;
    /* Pill shape */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 30px;
    /* Inner padding */
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    letter-spacing: -0.5px;
}

.logo .dot {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary);
}

.nav-links {
    display: flex;
    gap: 5px;
    /* Smaller gap for pill items */
    background: rgba(255, 255, 255, 0.03);
    padding: 5px;
    border-radius: 30px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 8px 20px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

/* Remove old underline effect */
.nav-links a::after {
    display: none;
}

.nav-links a:hover {
    color: var(--bg-dark);
    background: var(--primary);
    box-shadow: 0 0 15px rgba(0, 242, 255, 0.4);
}

/* Hero Section */
#hero {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 120px;
    /* Ensure content clears the floating header */
    padding-bottom: 60px;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    margin: 0 auto;
    /* Center content */
    text-align: center;
    /* Center text */
    padding: 0 20px;
}

#hero h1 {
    font-size: 5rem;
    /* Larger */
    font-weight: 800;
    margin-bottom: 30px;
    line-height: 1.1;
    letter-spacing: -2px;
    background: linear-gradient(to bottom right, #fff, #9ca3af);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--secondary);
}

@supports (-webkit-background-clip: text) {
    #hero h1 {
        color: transparent;
    }
}

.highlight {
    color: var(--primary);
    -webkit-text-fill-color: var(--primary);
    text-shadow: 0 0 40px rgba(0, 242, 255, 0.4);
    display: block;
    /* Break line for emphasis */
}

#hero p {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin: 0 auto 50px;
    /* Center and spacing */
    max-width: 700px;
    line-height: 1.6;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
    /* Center buttons */
}

/* Hero Background Animation */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 242, 255, 0.08) 0%, transparent 60%);
    z-index: 1;
    pointer-events: none;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    /* More breathing room */
    align-items: center;
}

.about-text p {
    margin-bottom: 24px;
    color: var(--text-muted);
    font-size: 1.15rem;
    line-height: 1.8;
}

.visual-box {
    width: 100%;
    height: 450px;
    background: linear-gradient(135deg, var(--bg-card), #1f2937);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.visual-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(transparent, var(--primary), transparent 30%);
    animation: rotate 8s linear infinite;
    /* Slower, smoother animation */
    opacity: 0.15;
}

@keyframes rotate {
    100% {
        transform: rotate(360deg);
    }
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.service-card {
    background: rgba(17, 24, 39, 0.6);
    /* More transparent */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 48px 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 242, 255, 0.1);
    border-color: rgba(0, 242, 255, 0.3);
    background: rgba(17, 24, 39, 0.8);
}

.service-card .icon {
    font-size: 3.5rem;
    margin-bottom: 24px;
    display: inline-block;
    filter: drop-shadow(0 0 10px rgba(0, 242, 255, 0.2));
}

.service-card h3 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: var(--secondary);
}

.service-card p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* References Section */
.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    text-align: center;
}

.ref-item {
    background: rgba(255, 255, 255, 0.02);
    padding: 40px 20px;
    border-radius: 16px;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.ref-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--secondary);
}

/* Contact Section */
.contact-wrapper {
    display: flex;
    justify-content: center;
    text-align: center;
}

.contact-info {
    background: linear-gradient(180deg, var(--bg-card), #0f1522);
    padding: 80px 40px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    max-width: 700px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.contact-link {
    display: inline-block;
    font-size: 2.5rem;
    color: var(--primary);
    margin: 40px 0;
    font-weight: 700;
    transition: transform 0.3s ease;
}

.contact-link:hover {
    transform: scale(1.05);
    text-shadow: 0 0 30px rgba(0, 242, 255, 0.4);
}

.btn-primary {
    background: var(--primary);
    color: var(--bg-dark);
    box-shadow: 0 4px 15px rgba(0, 242, 255, 0.3);
    position: relative;
    z-index: 1;
    border: 1px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 255, 0.5);
    background: #fff;
    /* White on hover for clean look */
    color: var(--bg-dark);
}

.address {
    color: var(--text-muted);
    font-style: normal;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* Legal Pages (Datenschutz/Impressum) */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h1 {
    margin-bottom: 40px;
    font-size: 3rem;
}

.legal-content h2 {
    text-align: left;
    margin-top: 60px;
    margin-bottom: 24px;
    font-size: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

.legal-content h3 {
    margin-top: 32px;
    margin-bottom: 16px;
    color: var(--secondary);
    font-size: 1.4rem;
}

.legal-content p,
.legal-content ul {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.legal-content ul {
    padding-left: 20px;
    list-style: disc;
}

.legal-content li {
    margin-bottom: 8px;
}

/* Footer */
footer {
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 80px;
    background: #05080f;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--secondary);
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.copyright {
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.85rem;
    margin-top: 24px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    #header {
        top: 0;
        left: 0;
        transform: none;
        width: 100%;
        max-width: none;
        border-radius: 0;
        border: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        background: rgba(10, 15, 28, 0.95);
    }

    .nav-links {
        position: fixed;
        top: 70px;
        /* Match header height */
        left: 0;
        width: 100%;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 40px;
        gap: 15px;
        text-align: center;
        transform: translateY(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        opacity: 0;
        pointer-events: none;
        height: auto;
        justify-content: flex-start;
        border-radius: 0;
    }

    .nav-links a {
        width: 100%;
        display: block;
        background: rgba(255, 255, 255, 0.03);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-links a {
        font-size: 1.5rem;
        /* Larger touch targets */
        font-weight: 600;
    }

    #hero h1 {
        font-size: 3rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .visual-box {
        height: 300px;
    }

    .contact-link {
        font-size: 1.5rem;
        word-break: break-all;
    }
}

/* Mobile Toggle Button */
.mobile-toggle {
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.8rem;
    cursor: pointer;
    display: none;
    padding: 5px;
    line-height: 1;
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
}