/* Course Layout Styles */
.course-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
    color: white;
}

.course-intro {
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    padding: 40px;
    border-radius: 15px;
    border: 2px solid #3c266e;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.course-module {
    background: #100a1f;
    border: 2px solid #3c266e;
    border-radius: 12px;
    padding: 25px;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.course-module:hover {
    border-color: #5a3f8f;
    background: #1a1a2e;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(60, 38, 110, 0.4);
}

.module-number {
    display: inline-block;
    background: #3c266e;
    color: white;
    font-weight: bold;
    font-size: 14px;
    padding: 5px 12px;
    border-radius: 20px;
    margin-bottom: 15px;
}

.module-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: white;
}

.module-description {
    color: #ccc;
    font-size: 14px;
    line-height: 1.6;
}

.progress-tracker {
    margin-top: 50px;
    background: #0f0f1a;
    padding: 30px;
    border-radius: 12px;
    border: 2px solid #2a2a3e;
    text-align: center;
}

.important-note {
    background: #1a1a2e;
    border-left: 4px solid #3c266e;
    padding: 20px;
    margin: 30px 0;
    border-radius: 0 8px 8px 0;
}

/* Guide content styles */
.guide-content {
    max-width: 850px;
    margin: 0 auto;
    padding: 40px 20px;
    color: white;
}

.guide-section {
    margin-bottom: 50px;
    background-color: #100a1f;
    padding: 30px;
    border-radius: 12px;
    border: 2px solid #3c266e;
    box-shadow: 0 0 20px rgba(60, 38, 110, 0.3);
    transition: all 0.3s ease;
}

.guide-section:hover {
    background-color: #1a1a2e;
    box-shadow: 0 0 30px rgba(60, 38, 110, 0.5);
}

.guide-section h2 {
    color: #3c266e;
    font-size: 1.5rem;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.guide-section p, .guide-section li {
    line-height: 1.8;
    font-size: 16px;
    color: #ccc;
}

.guide-section ul {
    padding-left: 20px;
}

.guide-section li {
    margin-bottom: 10px;
}

.guide-section strong {
    color: white;
}

.cta {
    display: inline-block;
    padding: 14px 28px;
    background-color: #3c266e;
    color: white;
    font-weight: 700;
    text-decoration: none;
    border-radius: 10px;
    margin-top: 20px;
    box-shadow: 0 0 15px rgba(60, 38, 110, 0.4);
    transition: all 0.3s ease;
}

.cta:hover {
    background-color: #5a4a8a;
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(60, 38, 110, 0.6);
}

.guide-note {
    font-size: 0.9rem;
    color: #bbb;
    margin-top: 30px;
    border-top: 1px solid #3c266e;
    padding-top: 20px;
}

/* Course and lesson navigation styles */
.course-nav {
}

/* ------------ ZURÜCK NACH OBEN BUTTON ------------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3c266e, #5a3f8f);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(60, 38, 110, 0.4);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: linear-gradient(135deg, #5a3f8f, #7a5fa0);
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(60, 38, 110, 0.6);
}

.back-to-top:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }

    .container {
        padding: 10px;
    }
}

.strategy-category {
    margin-top: 60px;
    margin-bottom: 50px;
}

.strategy-category:first-child {
    margin-top: 30px;
}