/* General Layout */
body {
    padding-top: 80px;
}

.dashboard-container {
    padding: 40px 20px;
    position: relative;
    z-index: 1;
}

.page-header {
    margin-bottom: 32px;
}

.page-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 8px;
}

.page-subtitle {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
}

/* Tabs */
.dashboard-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    padding: 8px;
    border-radius: var(--radius-card);
    border: 1px solid var(--glass-border);
}

.tab-button {
    flex: 1;
    padding: 14px 24px;
    border-radius: var(--radius-small);
    border: none;
    background: transparent;
    color: var(--text-light);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    font-size: 15px;
}

.tab-button:hover {
    background: rgba(255, 255, 255, 0.1);
}

.tab-button.active {
    background: linear-gradient(135deg, var(--color-accent-start), var(--color-accent-end));
    box-shadow: 0 4px 20px rgba(255, 122, 89, 0.4);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Manage Exams List */
.exam-list {
    display: grid;
    gap: 20px;
}

.exam-item {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-small);
    padding: 24px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-soft);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.exam-item-info {
    flex: 1;
}

.exam-item-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.exam-item-meta {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

.exam-item-actions {
    display: flex;
    gap: 12px;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--glass-bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 18px;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* Form Sections */
.form-section {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-card);
    padding: 32px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-soft);
    margin-bottom: 24px;
}

.form-section-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Question Builder */
.question-builder {
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-small);
    padding: 24px;
    margin-bottom: 20px;
    border: 2px dashed var(--glass-border);
}

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

.question-number {
    font-weight: 600;
    font-size: 16px;
    background: linear-gradient(135deg, var(--color-accent-start), var(--color-accent-end));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.answer-options {
    display: grid;
    gap: 12px;
    margin-bottom: 16px;
}

.answer-option {
    display: flex;
    gap: 12px;
    align-items: center;
}

.answer-option input[type="text"] {
    flex: 1;
}

.answer-option input[type="radio"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

/* Add Question Button */
.add-question-wrapper {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.add-question-btn {
    background: var(--color-accent-start);
    color: var(--text-light);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    transition: 0.2s;
}

.add-question-btn:hover {
    opacity: 0.9;
}

/* Score Validation */
.score-validation {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    padding: 16px 24px;
    border-radius: var(--radius-button);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-medium);
    font-weight: 600;
    z-index: 100;
}

.score-valid {
    color: #22c55e;
}

.score-invalid {
    color: #ef4444;
}

/* Student Selector */
.student-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.student-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-small);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: all 0.3s ease;
}

.student-checkbox:hover {
    background: rgba(255, 255, 255, 0.7);
}

.student-checkbox input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Results Table */
.results-table {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-small);
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.results-table table {
    width: 100%;
    border-collapse: collapse;
}

.results-table th {
    background: rgba(139, 92, 246, 0.1);
    padding: 16px;
    text-align: left;
    font-weight: 600;
    border-bottom: 1px solid var(--glass-border);
}

.results-table td {
    padding: 16px;
    border-bottom: 1px solid var(--glass-border);
}

.results-table tr:last-child td {
    border-bottom: none;
}

.results-table tr:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Modal System */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: 20px;
    animation: fadeIn 0.25s ease;
}

.modal-box {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-medium);
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
    animation: slideUp 0.35s ease;
}

.modal-box::-webkit-scrollbar {
    width: 8px;
}

.modal-box::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.modal-box::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.modal-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-header .icon-btn {
    background: rgba(255, 255, 255, 0.15);
}

.exam-meta {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 14px;
}

/* View Exam Styling */
.view-question-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 16px;
    border-radius: 10px;
    margin-bottom: 16px;
    border: 1px solid var(--glass-border);
}

.view-question-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.view-question-text {
    margin-bottom: 12px;
    font-size: 15px;
}

.modal-content img,
.review-modal img,
.question-view img {
    max-width: 100%;
    max-height: 80vh;
    height: auto;
    display: block;
    margin: 0 auto;
    object-fit: contain;
    border-radius: 10px;
    margin-bottom: 10px;
}

.question-image-preview {
    max-width: 100%;
    width: 100%;
    overflow: hidden;
    display: block;
    text-align: center;
}

.question-image-preview img {
    display: block;
    max-width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    margin: 0 auto 10px;
}

.view-answers {
    display: grid;
    gap: 8px;
}

.view-answer {
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.view-answer.correct-answer {
    background: rgba(34, 197, 94, 0.25);
    border-left: 4px solid #22c55e;
}

.correct-pill {
    background: #22c55e;
    color: var(--text-light);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

/* Grouped Exam List */
.exam-group {
    background: var(--card-bg);
    border-radius: 10px;
    margin-bottom: 15px;
    border: 1px solid var(--glass-border);
    overflow: hidden;
    transition: all 0.3s ease;
}

.exam-group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
    transition: background 0.2s ease;
}

.exam-group-header:hover {
    background: rgba(255, 255, 255, 0.2);
}

.exam-group-toggle-icon {
    font-size: 1rem;
    width: 18px;
    text-align: center;
    opacity: 0.8;
}

.exam-group-latest {
    margin-left: auto;
    font-size: 0.85rem;
    opacity: 0.7;
}

.exam-group-body {
    padding: 10px 20px 15px 35px;
    background: var(--card-bg);
    border-top: 1px solid var(--glass-border);
}

.exam-version-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.exam-version-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.exam-version-item:last-child {
    border-bottom: none;
}

.exam-version-main {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.exam-version-status {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    margin-left: 6px;
}

.exam-version-status.active {
    background: #4caf50;
    color: var(--text-light);
}

.exam-version-status.archived {
    background: #b71c1c;
    color: var(--text-light);
}

.exam-item-actions {
    display: flex;
    gap: 8px;
}

.exam-item-actions .icon-btn[disabled] {
    opacity: 0.4;
    cursor: not-allowed;
}

.exam-version-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
}

/* Review Answers Styling */
.review-question-item {
    background: var(--glass-bg);
    padding: 16px;
    border-radius: 10px;
    margin-bottom: 16px;
    border: 1px solid var(--glass-border);
}

.review-question-item.correct {
    border-left: 5px solid #22c55e;
}

.review-question-item.incorrect {
    border-left: 5px solid #ef4444;
}

.review-answer {
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 8px;
    background: rgba(255, 255, 255, 0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.review-answer.correct-answer {
    background: rgba(34, 197, 94, 0.25);
    border-left: 4px solid #22c55e;
}

.review-answer.student-answer {
    background: rgba(59, 130, 246, 0.25);
}

.btn-secondary.review-btn {
    background: rgba(139, 92, 246, 0.15);
    color: var(--text-primary);
    border: 1px solid rgba(139, 92, 246, 0.4);
    padding: 8px 16px;
    border-radius: var(--radius-small);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
    backdrop-filter: blur(10px);
}

.btn-secondary.review-btn:hover {
    background: rgba(139, 92, 246, 0.25);
    border-color: rgba(139, 92, 246, 0.6);
    transform: translateY(-2px);
}

.btn-secondary.review-btn:active {
    background: rgba(139, 92, 246, 0.35);
    transform: translateY(0);
}

body.dark-mode .btn-secondary.review-btn {
    background: rgba(139, 92, 246, 0.2);
    color: var(--text-primary);
    border: 1px solid rgba(139, 92, 246, 0.5);
}

.tag-correct {
    background: #4caf50;
    color: var(--text-light);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-left: 8px;
}

.tag-wrong {
    background: #e53935;
    color: var(--text-light);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-left: 8px;
}

/* Dark Mode */
body.dark-mode {
    --card-bg: linear-gradient(135deg, rgba(30, 41, 59, 0.95), rgba(15, 23, 42, 0.9));
    --glass-bg: rgba(30, 41, 59, 0.4);
    --glass-border: rgba(255, 255, 255, 0.15);
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
}

.student-checkbox.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.student-checkbox.disabled input {
    cursor: not-allowed;
}

body.dark-mode .dashboard-tabs {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--glass-border);
}

body.dark-mode .tab-button {
    color: var(--text-primary);
}

body.dark-mode .tab-button:hover {
    background: rgba(255, 255, 255, 0.1);
}

body.dark-mode ::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.25);
}

body.dark-mode ::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.4);
}

body.dark-mode .question-builder {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.18), rgba(59, 130, 246, 0.18)) !important;
    border: 2px dashed var(--glass-border);
    color: var(--text-primary);
}

body.dark-mode .student-checkbox {
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

body.dark-mode .student-checkbox:hover {
    background: rgba(30, 41, 59, 0.6);
}

body.dark-mode .results-table {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
}

body.dark-mode .results-table th {
    background: rgba(139, 92, 246, 0.15);
    color: var(--text-primary);
}

body.dark-mode .results-table tr:hover {
    background: rgba(139, 92, 246, 0.12);
}

body.dark-mode .exam-group,
body.dark-mode .exam-group-body {
    background: var(--card-bg);
    border-color: var(--glass-border);
}

body.dark-mode .exam-group-header {
    background: rgba(30, 41, 59, 0.6);
    color: var(--text-primary);
}

body.dark-mode .exam-group-header:hover {
    background: rgba(30, 41, 59, 0.8);
}

body.dark-mode .view-question-item,
body.dark-mode .review-question-item {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.18), rgba(59, 130, 246, 0.18)) !important;
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

body.dark-mode .view-answer,
body.dark-mode .review-answer {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

body.dark-mode input,
body.dark-mode textarea,
body.dark-mode select {
    background: rgba(255, 255, 255, 0.05) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--glass-border);
}

body.dark-mode input::placeholder,
body.dark-mode textarea::placeholder {
    color: var(--text-secondary);
}

body.dark-mode .icon-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

body.dark-mode .btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

body.dark-mode .modal-box {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}

body.dark-mode .modal-header h2 {
    color: var(--text-primary);
}

body.dark-mode select.input-field {
    background: rgba(30, 41, 59, 0.6);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-input);
    padding: 8px 12px;
}

body.dark-mode select.input-field option {
    background: rgba(30, 41, 59, 0.95);
    color: var(--text-primary);
}

.exam-result {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    color: var(--text-primary);
}

.progress-ring {
    position: relative;
    width: 120px;
    height: 120px;
}

.progress-ring svg {
    transform: rotate(-90deg);
}

.progress-ring circle {
    fill: none;
    stroke-width: 10;
    cx: 60;
    cy: 60;
    r: 50;
}

.progress-ring .bg {
    stroke: rgba(255, 255, 255, 0.1);
}

.progress-ring .fg {
    stroke: #22c55e;
    stroke-dasharray: 314;
    stroke-dashoffset: 314;
    transition: stroke-dashoffset 1s ease;
}

.percentage-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
}

.result-text {
    font-size: 16px;
    text-align: center;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(40px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .exam-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .exam-item-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .dashboard-tabs {
        flex-direction: column;
    }
}