:root {
    --bg-color: #0f0f0f;
    --bg-light: #1a1a1a;
    --primary-color: #00eeff;
    --secondary-color: #ff00aa;
    --text-color: #ffffff;
    --text-light: #cccccc;
    --muted-color: #777777;
    --border-color: #333333;
    
    --font-primary: 'Outfit', sans-serif;
    
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 32px;
    --space-lg: 64px;
    --space-xl: 128px;
    
    --radius-sm: 5px;
    --radius-md: 10px;
    --radius-lg: 20px;
    --radius-full: 50%;
    
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --z-nav: 1000;
    --z-overlay: 2000;
    --z-modal: 3000;
    --z-tooltip: 4000;
}

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

body {
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    line-height: 1.6;
    background-color: #0f0f0f;
    color: whitesmoke;
    font-size: 16px;
}

.container {
    display: flex;
    justify-content: center;
    gap: 50px;
}

.box {
    width: 300px;
    display: flex;
    flex-direction: column;
}

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

ul {
    list-style: none;
}

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

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
}

section {
    padding: var(--space-xl) 0;
    position: relative;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 64px;
    margin-bottom: var(--space-md);
}

h2 {
    font-size: 40px;
    margin-bottom: var(--space-md);
}

h3 {
    font-size: 24px;
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: var(--space-sm);
    font-size: 16px;
}

.highlight {
    color: var(--primary-color);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.section-tag {
    display: inline-block;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 500;
    margin-bottom: var(--space-xs);
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 14px;
}

.btn {
    display: inline-block;
    padding: 13px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
    font-size: 14px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    z-index: -1;
}

.btn:hover::before {
    width: 100%;
}

.primary-btn {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-color);
}

.secondary-btn {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.cta-buttons {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--space-sm) 0;
    background-color: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    z-index: var(--z-nav);
    transition: var(--transition-normal);
}

.main-nav.scrolled {
    padding: 8px 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-size: 32px;
    font-weight: 900;
    color: var(--text-color);
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-links a {
    position: relative;
    padding: 8px;
    font-weight: 500;
    font-size: 16px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition-normal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    cursor: pointer;
    z-index: calc(var(--z-nav) + 1);
}

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background-color: var(--bg-color);
    position: relative;
    overflow: hidden;
    padding-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 70% 30%, rgba(0, 238, 255, 0.1), transparent 70%);
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 30% 70%, rgba(255, 0, 170, 0.1), transparent 70%);
    z-index: 0;
}

.hero .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    max-width: 1400px;
    position: relative;
    z-index: 1;
}

.skills-list {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.skill {
    background-color: #1a1a1a;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #333333;
    width: 300px;
    transition: all 0.6s ease;
}

.skill:hover {
    border-color: #00eeff;
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 20px rgba(0, 238, 255, 0.1);
}

.skill h3 {
    color: #00eeff;
    margin-bottom: 10px;
    transition: color 0.6s ease;
    font-size: 20px;
}

.skill:hover h3 {
    color: #ff00aa;
}

.skill p {
    color: #cccccc;
    transition: color 0.6s ease;
    font-size: 14px;
}

.skill:hover p {
    color: #ffffff;
}

.container {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.box {
    width: 400px;
    display: flex;
    flex-direction: column;
    background-color: #1a1a1a;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid #333333;
    transition: all 0.6s ease;
}

.box:hover {
    border-color: #00eeff;
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 238, 255, 0.2);
}

.box img {
    width: 100%;
    border-radius: 10px;
    transition: all 0.6s ease;
}

.box:hover img {
    transform: scale(1.02);
    filter: brightness(1.1);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-info {
    padding: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
}

.contact-text h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--text-color);
}

.contact-text p {
    font-size: 14px;
    color: var(--text-light);
}

.contact-form {
    background-color: var(--bg-light);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.form-group {
    position: relative;
    margin-bottom: 30px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background-color: transparent;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-color);
    font-size: 16px;
    transition: var(--transition-normal);
}

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

.form-group label {
    position: absolute;
    top: 15px;
    left: 15px;
    color: var(--muted-color);
    font-size: 16px;
    pointer-events: none;
    transition: var(--transition-normal);
}

.form-group input:focus + label,                 /*mit hilfe*/
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -10px;
    left: 10px;
    font-size: 12px;
    color: var(--primary-color);
    background-color: var(--bg-light);
    padding: 0 5px;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}


.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: center;
}

.about-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
}

.about-content p {
    font-size: 16px;
    margin-bottom: 20px;
    line-height: 1.8;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin: 30px 0;
}

.info-item {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 12px;
    color: var(--muted-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.info-text {
    font-size: 16px;
    color: var(--text-color);
    font-weight: 500;
}


footer {
    background-color: #2c2c2c;
    color: white;
    padding: 30px 0;
    margin-top: 50px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-content p {
    margin: 0;
    font-size: 14px;
    color: #cccccc;
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #98289c;
}


@media (max-width: 768px) {    /*mit hilfe*/
    .footer-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 48px;
    }
    
    h2 {
        font-size: 32px;
    }
    
    .nav-brand a {
        font-size: 24px;
    }
    
    .skills-list {
        justify-content: center;
    }
    
    .skill,
    .box {
        width: 100%;
        max-width: 400px;
    }
}