/* Aptitude Section Styles */
.aptitude-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    gap: 30px;
    min-height: calc(100vh - 200px);
}

/* Sidebar Styles */
.aptitude-sidebar {
    width: 280px;
    background: var(--card-bg);
    border-radius: 16px;
    padding: 25px;
    height: fit-content;
    border: 1px solid rgba(0, 194, 255, 0.2);
    position: sticky;
    top: 20px;
}

.sidebar-title {
    font-size: 1.4rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    font-family: var(--heading-font);
    text-align: center;
}

.topic-list {
    list-style: none;
    padding: 0;
}

.topic-item {
    margin-bottom: 12px;
}

.topic-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.topic-link:hover {
    background: rgba(0, 194, 255, 0.1);
    border-color: var(--accent-color);
    transform: translateX(5px);
}

.topic-link.active {
    background: var(--accent-color);
    color: var(--secondary-color);
    font-weight: 600;
}

.topic-icon {
    font-size: 1.2rem;
    width: 20px;
}

/* Main Content Styles */
.aptitude-main {
    flex: 1;
    background: var(--card-bg);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(0, 194, 255, 0.2);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid rgba(0, 194, 255, 0.2);
}

.content-title {
    font-size: 2rem;
    color: var(--accent-color);
    font-family: var(--heading-font);
}

.practice-btn {
    background: linear-gradient(135deg, var(--primary-color), #D01712);
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.practice-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(228, 27, 23, 0.4);
}

/* Learning Content Styles */
.learning-content {
    line-height: 1.8;
    color: var(--text-color);
}

.learning-content h2 {
    color: var(--accent-color);
    margin: 30px 0 15px 0;
    font-family: var(--heading-font);
}

.learning-content h3 {
    color: var(--highlight-color);
    margin: 25px 0 12px 0;
}

.learning-content p {
    margin-bottom: 15px;
}

.learning-content ul, .learning-content ol {
    margin: 15px 0;
    padding-left: 25px;
}

.learning-content li {
    margin-bottom: 8px;
}

.formula-box {
    background: rgba(7, 11, 24, 0.7);
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    font-family: var(--monospace-font);
    text-align: center;
}

.example-box {
    background: rgba(20, 36, 64, 0.7);
    border-left: 4px solid var(--highlight-color);
    padding: 20px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

/* Challenge Page Styles */
.challenge-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.timer-controls {
    display: flex;
    gap: 15px;
    align-items: center;
}

.timer-btn {
    background: rgba(28, 43, 74, 0.8);
    color: var(--text-color);
    border: 1px solid rgba(0, 194, 255, 0.3);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.timer-btn.active {
    background: var(--accent-color);
    color: var(--secondary-color);
}

.timer-display {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--monospace-font);
}

.question-container {
    background: rgba(7, 11, 24, 0.7);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
    border: 1px solid rgba(0, 194, 255, 0.1);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.question-number {
    font-size: 1.1rem;
    color: var(--accent-color);
    font-weight: 600;
}

.question-difficulty {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.difficulty-easy { background: rgba(0, 191, 99, 0.2); color: var(--success-color); }
.difficulty-medium { background: rgba(255, 199, 0, 0.2); color: var(--highlight-color); }
.difficulty-hard { background: rgba(228, 27, 23, 0.2); color: var(--primary-color); }

.question-text {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--text-color);
}

.options-container {
    display: grid;
    gap: 12px;
    margin-bottom: 20px;
}

.option-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: rgba(20, 36, 64, 0.5);
    border: 1px solid rgba(0, 194, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.option-item:hover {
    background: rgba(0, 194, 255, 0.1);
    border-color: var(--accent-color);
}

.option-item.selected {
    background: rgba(0, 194, 255, 0.2);
    border-color: var(--accent-color);
}

.option-radio {
    width: 18px;
    height: 18px;
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    position: relative;
}

.option-radio.checked::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--accent-color);
    border-radius: 50%;
}

.text-input {
    width: 100%;
    padding: 15px;
    background: rgba(7, 11, 24, 0.7);
    border: 1px solid rgba(0, 194, 255, 0.3);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.text-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.2);
}

.navigation-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
}

.nav-btn {
    background: rgba(28, 43, 74, 0.8);
    color: var(--text-color);
    border: 1px solid rgba(0, 194, 255, 0.3);
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-btn:hover {
    background: rgba(28, 43, 74, 1);
    transform: translateY(-2px);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-color), #D01712);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(228, 27, 23, 0.4);
}

/* Results Modal */
.results-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(7, 11, 24, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.results-content {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px;
    max-width: 600px;
    width: 90%;
    border: 1px solid rgba(0, 194, 255, 0.3);
}

.results-title {
    text-align: center;
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 30px;
    font-family: var(--heading-font);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.result-item {
    text-align: center;
    padding: 20px;
    background: rgba(7, 11, 24, 0.7);
    border-radius: 12px;
    border: 1px solid rgba(0, 194, 255, 0.1);
}

.result-label {
    font-size: 0.9rem;
    color: rgba(225, 230, 242, 0.7);
    margin-bottom: 8px;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: var(--heading-font);
}

.badges-section {
    margin-bottom: 30px;
}

.badges-title {
    font-size: 1.2rem;
    color: var(--highlight-color);
    margin-bottom: 15px;
    text-align: center;
}

.badges-list {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--highlight-color), #FFB347);
    color: var(--secondary-color);
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.close-results {
    display: block;
    margin: 0 auto;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close-results:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(228, 27, 23, 0.4);
}

/* Leaderboard Styles */
.leaderboard-filters {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    justify-content: center;
}

.filter-btn {
    background: rgba(28, 43, 74, 0.8);
    color: var(--text-color);
    border: 1px solid rgba(0, 194, 255, 0.3);
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn.active {
    background: var(--accent-color);
    color: var(--secondary-color);
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(7, 11, 24, 0.7);
    border-radius: 12px;
    overflow: hidden;
}

.leaderboard-table th {
    background: var(--secondary-color);
    color: var(--accent-color);
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

.leaderboard-table td {
    padding: 15px;
    border-bottom: 1px solid rgba(0, 194, 255, 0.1);
    color: var(--text-color);
}

.leaderboard-table tr:hover {
    background: rgba(0, 194, 255, 0.05);
}

.rank-cell {
    font-weight: 700;
    color: var(--highlight-color);
}

.badge-mini {
    display: inline-block;
    padding: 2px 8px;
    background: var(--highlight-color);
    color: var(--secondary-color);
    border-radius: 10px;
    font-size: 0.7rem;
    margin: 0 2px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .aptitude-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .aptitude-sidebar {
        width: 100%;
        position: static;
    }
    
    .topic-list {
        display: flex;
        gap: 10px;
        overflow-x: auto;
        padding-bottom: 10px;
    }
    
    .topic-item {
        margin-bottom: 0;
        flex-shrink: 0;
    }
}

@media (max-width: 768px) {
    .aptitude-container {
        padding: 15px;
    }
    
    .aptitude-main {
        padding: 20px;
    }
    
    .content-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .challenge-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .timer-controls {
        width: 100%;
        justify-content: space-between;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .navigation-controls {
        flex-direction: column;
        gap: 15px;
    }
    
    .leaderboard-table {
        font-size: 0.9rem;
    }
    
    .leaderboard-table th,
    .leaderboard-table td {
        padding: 10px 8px;
    }
}

@media (max-width: 480px) {
    .results-content {
        padding: 25px 20px;
    }
    
    .question-container {
        padding: 20px 15px;
    }
    
    .option-item {
        padding: 12px;
    }
    
    .badges-list {
        flex-direction: column;
        align-items: center;
    }
}