/* Past Papers Page Styles */

.past-papers-container {
    min-height: calc(100vh - 70px);
    padding: 60px 20px 80px;
}

.page-header {
    text-align: center;
    margin-bottom: 50px;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.page-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Filters Section */
.filters-section {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.filters-header h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.filters-header h3 i {
    color: var(--accent-primary);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-label i {
    color: var(--accent-primary);
    font-size: 0.85rem;
}

.filter-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.1);
}

/* Search Section */
.search-section {
    margin-top: 20px;
}

.search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-box i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1rem;
}

.search-input {
    width: 100%;
    padding: 14px 20px 14px 48px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.1);
}

/* Results Info */
.results-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding: 15px 0;
}

.results-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.view-toggle {
    display: flex;
    gap: 10px;
    background: var(--card-bg);
    padding: 5px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.view-btn {
    padding: 8px 16px;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.view-btn:hover {
    color: var(--text-primary);
}

.view-btn.active {
    background: var(--accent-gradient);
    color: white;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    gap: 20px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Error State */
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    gap: 15px;
    text-align: center;
}

.error-state i {
    font-size: 3rem;
    color: #F56565;
}

.error-state h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.error-state p {
    color: var(--text-secondary);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    gap: 15px;
    text-align: center;
}

.empty-state i {
    font-size: 3rem;
    color: var(--text-secondary);
}

.empty-state h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
}

/* Questions Container */
.questions-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.questions-container.grid-view {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

/* Question Card */
.question-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 25px;
    transition: var(--transition);
}

.question-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow);
    border-color: var(--accent-primary);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
    gap: 15px;
}

.question-meta {
    flex: 1;
}

.question-badge {
    display: inline-block;
    padding: 4px 10px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.question-info {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.question-info span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.question-info i {
    color: var(--accent-primary);
}

.question-marks {
    background: rgba(167, 139, 250, 0.1);
    border: 1px solid rgba(167, 139, 250, 0.3);
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    color: var(--accent-primary);
    white-space: nowrap;
}

.question-text {
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: 15px;
    font-size: 1rem;
}

.question-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.topic-tag {
    padding: 5px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.question-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-outline i {
    font-size: 0.85rem;
}

/* Mark Scheme Section */
.mark-scheme {
    margin-top: 15px;
    padding: 15px;
    background: var(--bg-secondary);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    display: none;
}

.mark-scheme.visible {
    display: block;
}

.mark-scheme-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--accent-primary);
}

.mark-scheme-content {
    color: var(--text-primary);
    line-height: 1.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .past-papers-container {
        padding: 40px 15px 60px;
    }

    .page-title {
        font-size: 2rem;
    }

    .filters-section {
        padding: 20px;
    }

    .filters-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .filters-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .results-info {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

    .view-toggle {
        width: 100%;
        justify-content: center;
    }

    .questions-container.grid-view {
        grid-template-columns: 1fr;
    }

    .question-header {
        flex-direction: column;
    }

    .question-actions {
        flex-direction: column;
    }

    .btn-outline {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 1.75rem;
    }

    .filters-section {
        padding: 15px;
    }

    .question-card {
        padding: 20px 15px;
    }

    .question-info {
        flex-direction: column;
        gap: 8px;
    }
}