body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(145deg, #1f1f2e, #2c2c3d);
    color: #ffffff;
    margin: 0;
    padding: 0;
}

.achievements-container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    animation: fadeInUp 0.8s ease-out;
}

h1, h2 {
    color: #00e5ff;
    text-shadow: 0 0 5px rgba(0, 229, 255, 0.2);
    text-align: center;
}

.slogan {
    text-align: center;
    color: #ccc;
    margin-bottom: 2rem;
    font-style: italic;
}


/* === Zurück-Button === */
.back-button {
    position: absolute;
    top: 20px;
    left: 20px;
    background-color: #00d9ff;
    color: #0d1117;
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
    transition: background-color 0.3s ease, transform 0.3s ease;
    font-size: 1rem;
    z-index: 1000;
}

.back-button:hover {
    background-color: #00aacc;
    transform: scale(1.05);
}

/* Responsives Verhalten */
@media (max-width: 768px) {
    .back-button {
        top: 10px;
        left: 10px;
        padding: 8px 14px;
        font-size: 0.9rem;
    }
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background-color: rgba(10, 15, 25, 0.95);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow:
        0 0 15px rgba(0, 229, 255, 0.07),
        0 4px 10px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.achievement-card:hover {
    transform: scale(1.02);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.2);
}

.trophy-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.achievement-card h2 {
    margin-bottom: 0.5rem;
}

.achievement-card p {
    margin: 0.5rem 0;
}

.status {
    margin-top: 1rem;
    font-weight: bold;
    color: #00e5ff;
}

.locked {
    opacity: 0.6;
    filter: grayscale(70%);
}

/* === Unlock-Effekt für freigeschaltete Achievements === */
.achievement-card.unlocked {
    animation: unlock-glow 1s ease-out;
}

/* Animation für Unlock-Glow */
@keyframes unlock-glow {
    0% {
        box-shadow: 0 0 0 rgba(0, 229, 255, 0);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 229, 255, 0.7);
        transform: scale(1.05);
    }
    100% {
        box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
        transform: scale(1);
    }
}

/* Sanftes Pulsieren beim Hover über freigeschaltete Achievements */
.achievement-card.unlocked:hover {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 229, 255, 0.5);
    }
    100% {
        box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
    }
}
/* === Footer === */
footer {
    background-color: #111122;
    padding: 1rem;
    text-align: center;
    font-size: 0.9rem;
    color: #aaa;
}

footer a {
    color: #66d9ef;
    text-decoration: none;
    margin: 0 0.5rem;
}

footer a:hover {
    text-decoration: underline;