/* Teaching Page Styles */

.page-header {
    background: linear-gradient(135deg, #1a1a1a 0%, #333333 50%, #FFD700 100%);
    color: var(--white);
    text-align: center;
    padding: 100px 20px 80px;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.learning-levels {
    padding: 80px 20px;
    background: var(--white);
}

.levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.level-card {
    background: var(--light-bg);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 3px solid transparent;
}

.level-card.beginner {
    border-color: #4ecdc4;
}

.level-card.intermediate {
    border-color: #f7b731;
}

.level-card.advanced {
    border-color: #fc5c65;
}

.level-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.level-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.level-card.beginner .level-icon {
    color: #4ecdc4;
}

.level-card.intermediate .level-icon {
    color: #f7b731;
}

.level-card.advanced .level-icon {
    color: #fc5c65;
}

.level-card h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.level-card > p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.level-topics {
    list-style: none;
    text-align: left;
    margin: 1.5rem 0;
}

.level-topics li {
    padding: 0.7rem 0;
    border-bottom: 1px solid #ddd;
    color: var(--text-color);
}

.level-topics li:last-child {
    border-bottom: none;
}

.level-topics li::before {
    content: '✓';
    color: var(--secondary-color);
    font-weight: bold;
    margin-right: 10px;
}

.level-btn {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 12px 30px;
    background: var(--secondary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: var(--transition);
}

.level-btn:hover {
    background: var(--primary-color);
    transform: scale(1.05);
}

/* Featured Lessons */
.featured-lessons {
    padding: 80px 20px;
    background: var(--light-bg);
}

.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.lesson-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.lesson-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.lesson-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.lesson-level {
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--white);
}

.beginner-badge {
    background: #4ecdc4;
}

.intermediate-badge {
    background: #f7b731;
}

.advanced-badge {
    background: #fc5c65;
}

.lesson-duration {
    color: #999;
    font-size: 0.9rem;
}

.lesson-duration i {
    margin-right: 5px;
}

.lesson-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.lesson-card > p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.lesson-meta {
    display: flex;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    color: #999;
    font-size: 0.9rem;
}

.lesson-meta i {
    margin-right: 5px;
}

/* Learning Tips */
.learning-tips {
    padding: 80px 20px;
    background: var(--white);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tip-card {
    background: linear-gradient(135deg, #1a1a1a 0%, #FFD700 100%);
    color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
}

.tip-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.tip-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.tip-card h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.tip-card p {
    line-height: 1.6;
    opacity: 0.95;
}

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

    .lessons-grid {
        grid-template-columns: 1fr;
    }

    .tips-grid {
        grid-template-columns: 1fr;
    }

    .level-card {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .level-icon {
        font-size: 2.5rem;
    }

    .level-card h3 {
        font-size: 1.5rem;
    }

    .lesson-header {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
}

/* Interactive Tools Section */
.tools-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.tool-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.tool-card.practice-card::before {
    background: linear-gradient(90deg, #f093fb 0%, #f5576c 100%);
}

.tool-card.lectures-card::before {
    background: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);
}

.tool-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.tool-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.practice-card .tool-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.lectures-card .tool-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.tool-icon i {
    font-size: 36px;
    color: white;
}

.tool-card h3 {
    font-size: 28px;
    margin-bottom: 15px;
    color: #2c3e50;
}

.tool-card p {
    color: #6b7280;
    line-height: 1.8;
    margin-bottom: 25px;
    font-size: 16px;
}

.tool-features {
    list-style: none;
    padding: 0;
    margin: 25px 0;
}

.tool-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    color: #4b5563;
    font-size: 15px;
}

.tool-features i {
    color: #10b981;
    font-size: 18px;
}

.tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.practice-card .tool-btn {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.lectures-card .tool-btn {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.tool-btn:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.tool-btn:hover i {
    transform: translateX(5px);
}

.tool-btn i {
    transition: transform 0.3s ease;
}

@media (max-width: 900px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
}