:root {
    --primary: #2c3e50;
    --secondary: #34495e;
    --accent: #3498db;
    --light: #ecf0f1;
    --dark: #2c3e50;
    --text: #333;
    --bg: #3d7bad;
    --section-bg: #ffffff;
    --header-bg: var(--primary);
    --footer-bg: var(--dark);
}

.dark-mode {
    --primary: #3498db;
    --secondary: #2980b9;
    --accent: #f1c40f;
    --light: #2c3e50;
    --dark: #1a252f;
    --text: #ecf0f1;
    --bg: #1a252f;
    --section-bg: #2c3e50;
    --header-bg: var(--dark);
    --footer-bg: var(--dark);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

body {
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: var(--header-bg);
    color: white;
    padding-top: 70px;
    padding-bottom: 2rem;
    text-align: center;
    margin-bottom: 2rem;
}

.header-top {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--header-bg);
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-content {
    padding: 1rem 0;
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: white;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    color: white;
}

section {
    background: var(--section-bg);
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

h2 {
    color: var(--primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.experience-item, .education-item {
    margin-bottom: 1.5rem;
}

.job-title, .degree {
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--primary);
}

.company, .university {
    color: var(--secondary);
    font-style: italic;
}

.date {
    color: var(--text);
    opacity: 0.8;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

ul {
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

.skills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 1rem;
}

.skill {
    background-color: var(--accent);
    color: var(--dark);
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 0.9rem;
    font-weight: bold;
}

footer {
    text-align: center;
    padding: 1rem;
    background-color: var(--footer-bg);
    color: white;
    margin-top: 2rem;
}

.controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
}

.btn {
    padding: 8px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: transform 0.2s, opacity 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--dark);
}

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

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

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Sprachwechsel-Animationen */
[lang] {
    transition: 
        opacity 0.4s cubic-bezier(0.16, 0.01, 0.22, 1),
        transform 0.5s cubic-bezier(0.34, 0.1, 0.34, 1);
    will-change: transform, opacity;
    position: relative;
}

/* Initialzustand */
body:not(.switching-language) [lang].active-lang {
    opacity: 1;
    transform: none;
    filter: none;
}

/* Animation für ausgehende Sprache */
body.switching-language [lang].active-lang {
    opacity: 0;
    transform: translateY(15px) rotateX(20deg);
    filter: blur(1px);
    pointer-events: none;
}

/* Animation für eingehende Sprache */
body.switching-language [lang]:not(.active-lang) {
    opacity: 0;
    transform: translateY(-15px) rotateX(-20deg);
    filter: blur(1px);
    pointer-events: none;
}

/* Sprachspezifische Anzeige */
body.german [lang="de"],
body:not(.german) [lang="en"] {
    display: block;
}

body.german [lang="en"],
body:not(.german) [lang="de"] {
    display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }
    
    .controls {
        position: static;
        justify-content: center;
        margin-top: 10px;
        flex-wrap: wrap;
    }
    
    .header-top {
        padding-bottom: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    section {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 6px 10px;
        font-size: 0.9rem;
    }
    
    .controls {
        gap: 5px;
    }
}