/* Module Page Specific Styles */

.module-hero {
    text-align: center;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    margin: 20px 0;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.module-hero h2 {
    font-size: 42px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 15px 0;
}

.module-hero p {
    font-size: 18px;
    color: #666;
    margin: 0;
}

/* Track Selection */
.track-selection {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.track-option {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.track-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.track-option:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 25px rgba(102, 126, 234, 0.2);
}

.track-option .track-icon {
    font-size: 64px;
    margin-bottom: 20px;
    display: block;
}

.track-option h3 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin: 0 0 10px 0;
}

.track-option p {
    color: #666;
    margin: 0 0 15px 0;
}

.module-count {
    color: #667eea;
    font-weight: 600;
    font-size: 14px;
}

/* Track Headers */
.track-header {
    text-align: center;
    margin-bottom: 40px;
}

.back-btn {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(102, 126, 234, 0.3);
    color: #667eea;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.back-btn:hover {
    background: #667eea;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.track-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin: 0 0 10px 0;
}

.track-header p {
    font-size: 18px;
    color: #555;
    margin: 0;
}

/* Module Cards Grid */
.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.module-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.module-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
}

.module-status {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 20px;
    padding: 5px 10px;
    border-radius: 20px;
    font-weight: bold;
}

.module-status.completed {
    background: rgba(76, 175, 80, 0.1);
    color: #4caf50;
}

.module-status.in-progress {
    background: rgba(255, 152, 0, 0.1);
    color: #ff9800;
}

.module-status.available {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.module-status.locked {
    background: rgba(158, 158, 158, 0.1);
    color: #9e9e9e;
}

.module-icon {
    font-size: 48px;
    margin-bottom: 15px;
    display: block;
}

.module-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: #333;
    margin: 0 0 10px 0;
}

.module-card p {
    color: #666;
    line-height: 1.5;
    margin: 0 0 15px 0;
}

.module-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.module-meta span {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
}

.difficulty.beginner {
    background: rgba(76, 175, 80, 0.1);
    color: #4caf50;
}

.difficulty.intermediate {
    background: rgba(255, 152, 0, 0.1);
    color: #ff9800;
}

.difficulty.advanced {
    background: rgba(244, 67, 54, 0.1);
    color: #f44336;
}

.duration {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.coins {
    background: rgba(243, 156, 18, 0.1);
    color: #f39c12;
}

.module-progress {
    margin-top: 15px;
}

.module-progress span {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

/* Individual Module Content */
.module-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.module-title h2 {
    font-size: 28px;
    font-weight: 600;
    color: #333;
    margin: 0 0 5px 0;
}

.module-title p {
    color: #666;
    margin: 0;
}

.module-coins {
    font-size: 24px;
    font-weight: 700;
    color: #f39c12;
}

.module-content-area {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 30px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.lesson-sidebar {
    border-right: 1px solid rgba(102, 126, 234, 0.2);
    padding-right: 30px;
}

.lesson-sidebar h3 {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin: 0 0 20px 0;
}

.lesson-sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lesson-sidebar li {
    margin-bottom: 10px;
}

.lesson-sidebar a {
    display: block;
    padding: 10px 15px;
    color: #666;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.lesson-sidebar a:hover,
.lesson-sidebar a.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    transform: translateX(5px);
}

.lesson-sidebar a.completed {
    color: #4caf50;
}

.lesson-sidebar a.completed::after {
    content: ' ✅';
}

.lesson-content {
    flex: 1;
}

#lesson-area {
    background: rgba(248, 249, 250, 0.8);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 20px;
    min-height: 400px;
}

.lesson-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lesson-navigation button {
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

#prev-lesson {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

#next-lesson {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

#complete-lesson {
    background: linear-gradient(135deg, #4caf50, #45a049);
    color: white;
}

.lesson-navigation button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.lesson-navigation button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Lesson Content Styles */
.lesson-content-block {
    margin-bottom: 30px;
}

.lesson-content-block h3 {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin: 0 0 15px 0;
}

.lesson-content-block h4 {
    font-size: 20px;
    font-weight: 600;
    color: #667eea;
    margin: 20px 0 10px 0;
}

.lesson-content-block p {
    color: #666;
    line-height: 1.6;
    margin: 0 0 15px 0;
}

.lesson-content-block ul,
.lesson-content-block ol {
    color: #666;
    line-height: 1.6;
    margin: 0 0 15px 20px;
}

.code-block {
    background: #2d3748;
    color: #e2e8f0;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    margin: 15px 0;
    overflow-x: auto;
}

.interactive-element {
    background: rgba(102, 126, 234, 0.1);
    border: 2px solid #667eea;
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
}

.interactive-element h4 {
    color: #667eea;
    margin: 0 0 15px 0;
}

.quiz-question {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.quiz-options {
    display: grid;
    gap: 10px;
    margin-top: 15px;
}

.quiz-option {
    padding: 12px 20px;
    background: rgba(102, 126, 234, 0.1);
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.quiz-option:hover {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.2);
}

.quiz-option.correct {
    background: rgba(76, 175, 80, 0.2);
    border-color: #4caf50;
}

.quiz-option.incorrect {
    background: rgba(244, 67, 54, 0.2);
    border-color: #f44336;
}

/* Responsive Design */
@media (max-width: 768px) {
    .modules-grid {
        grid-template-columns: 1fr;
    }
    
    .module-content-area {
        grid-template-columns: 1fr;
    }
    
    .lesson-sidebar {
        border-right: none;
        border-bottom: 1px solid rgba(102, 126, 234, 0.2);
        padding-right: 0;
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    
    .module-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
}