/* Programmierer-inspiriertes Design */
:root {
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --text-primary: #d4d4d4;
    --text-secondary: #858585;
    --accent-blue: #4fc3f7;
    --accent-green: #66bb6a;
    --accent-orange: #ff9800;
    --accent-purple: #ba68c8;
    --border-color: #3e3e42;
}

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

body {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header */
header {
    background-color: var(--bg-secondary);
    padding: 1.5rem 2rem;
    border-bottom: 2px solid var(--accent-blue);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

header h1 {
    color: var(--accent-blue);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

header h1::before {
    content: '> ';
    color: var(--accent-green);
}

header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Navigation */
nav {
    background-color: var(--bg-tertiary);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

nav a {
    color: var(--text-primary);
    text-decoration: none;
    margin-right: 1.5rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: inline-block;
}

nav a:hover {
    background-color: var(--bg-primary);
    color: var(--accent-blue);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

/* Klassen-Übersicht */
.klassen-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.klasse-card {
    background-color: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.klasse-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(79, 195, 247, 0.3);
}

.klasse-card h3 {
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

.klasse-card a {
    color: var(--text-primary);
    text-decoration: none;
    display: block;
    padding: 0.5rem;
}

/* Themen-Liste */
.themen-liste {
    list-style: none;
    margin-top: 1.5rem;
}

.themen-liste li {
    background-color: var(--bg-tertiary);
    border-left: 4px solid var(--accent-green);
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.themen-liste li:hover {
    background-color: var(--bg-primary);
    border-left-color: var(--accent-blue);
}

.themen-liste a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
}

.themen-liste a::before {
    content: '// ';
    color: var(--text-secondary);
}

/* Aufgaben-Bereiche */
.aufgaben-section {
    background-color: var(--bg-tertiary);
    border-left: 4px solid var(--accent-orange);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-radius: 4px;
}

.aufgaben-section h2 {
    color: var(--accent-orange);
    margin-bottom: 1rem;
}

.aufgaben-section h2::before {
    content: '$ ';
    color: var(--accent-green);
}

.aufgabe {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
}

.aufgabe h3 {
    color: var(--accent-purple);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.aufgabe p {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Interaktive Aufgaben */
.interactive-task {
    background-color: var(--bg-primary);
    border: 2px solid var(--accent-green);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
}

.interactive-task h3 {
    color: var(--accent-green);
    margin-bottom: 1rem;
}

input[type="number"],
input[type="text"] {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: 4px;
    font-family: 'Consolas', monospace;
    font-size: 1rem;
    margin: 0.5rem 0;
    width: 150px;
}

button {
    background-color: var(--accent-blue);
    color: var(--bg-primary);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-family: 'Consolas', monospace;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 0.5rem 0.5rem 0.5rem 0;
}

button:hover {
    background-color: var(--accent-green);
    transform: scale(1.05);
}

.result {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    font-weight: bold;
    display: none;
}

.result.correct {
    background-color: rgba(102, 187, 106, 0.2);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
    display: block;
}

.result.incorrect {
    background-color: rgba(244, 67, 54, 0.2);
    border: 1px solid #f44336;
    color: #f44336;
    display: block;
}

/* Code-Style Boxen */
.code-box {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
    font-family: 'Consolas', monospace;
}

.code-box::before {
    content: '// Hinweis:';
    color: var(--text-secondary);
    display: block;
    margin-bottom: 0.5rem;
}

/* Breadcrumb Navigation */
.breadcrumb {
    background-color: var(--bg-tertiary);
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    margin: 0 0.5rem;
    color: var(--text-secondary);
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    text-align: center;
    margin-top: 3rem;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .klassen-grid {
        grid-template-columns: 1fr;
    }

    nav a {
        display: block;
        margin: 0.5rem 0;
    }

    main {
        padding: 0 1rem;
    }
}

.equation-row {
    display: flex;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem; /* Gleiche Größe wie normaler Text */
    margin: 0.3rem 0;
}

.equation-row .left {
    min-width: 120px;
    text-align: right;
    padding-right: 8px;
}

.equation-row .equals {
    width: 30px;
    text-align: center;
}

.equation-row .right {
    min-width: 80px;
    text-align: left;
    padding-left: 8px;
}

.equation-row .operation {
    margin-left: 20px;
    color: var(--text-secondary);
    font-style: italic;
}