* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
.page {
    display: none;
}
.page.active {
    display: block;
}
/* Login Page Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.login-box, .admin-login-box {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 100%;
    max-width: 400px;
}
.login-title {
    text-align: center;
    font-size: 2rem;
    color: #333;
    margin-bottom: 30px;
    font-weight: bold;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: 500;
}
.form-group input, .form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}
.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}
.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.btn-primary {
    background: #667eea;
    color: white;
}
.btn-primary:hover:not(:disabled) {
    background: #5a6fd8;
    transform: translateY(-2px);
}
.btn-secondary {
    background: rgba(255, 255, 255, 0.8);
    color: #333;
    border: 2px solid #667eea;
    margin-top: 10px;
}
.btn-secondary:hover {
    background: rgba(102, 126, 234, 0.1);
}
.switch-link {
    text-align: center;
    margin-top: 20px;
    color: #667eea;
    cursor: pointer;
    text-decoration: underline;
}
.loading {
    text-align: center;
    color: #667eea;
    margin-top: 10px;
}
.error {
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
    padding: 10px;
    border-radius: 6px;
    margin-top: 10px;
    text-align: center;
}
.success {
    background: rgba(39, 174, 96, 0.1);
    color: #27ae60;
    padding: 10px;
    border-radius: 6px;
    margin-top: 10px;
    text-align: center;
}
/* Quiz Styles */
.quiz-container {
    height: 100vh;
    overflow-y: auto;
}
.quiz-container * {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}
.header {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.quiz-title {
    font-size: 2rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}
.quiz-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}
.student-info {
    background: rgba(102, 126, 234, 0.1);
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: bold;
    color: #667eea;
}
.timer {
    font-size: 1.5rem;
    font-weight: bold;
    color: #e74c3c;
    background: rgba(231, 76, 60, 0.1);
    padding: 10px 20px;
    border-radius: 25px;
}
.violation-counter {
    font-size: 1.1rem;
    color: #f39c12;
    background: rgba(243, 156, 18, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
}
.question-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.question-number {
    font-size: 1.2rem;
    font-weight: bold;
    color: #667eea;
}
.question-text {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 25px;
    line-height: 1.6;
}
.options {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.option {
    display: flex;
    align-items: center;
    padding: 15px;
    background: rgba(255, 255, 255, 0.7);
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.option:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: #667eea;
}
.option.selected {
    background: rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}
.option input[type="radio"] {
    margin-right: 15px;
    transform: scale(1.2);
}
.navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
}
.btn-nav {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}
/* Admin Dashboard Styles */
.admin-container {
    padding: 20px 0;
}
.admin-header {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.admin-title {
    font-size: 2rem;
    color: #333;
    font-weight: bold;
}
.logout-btn {
    padding: 10px 20px;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
}
.admin-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}
.admin-tab {
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid #667eea;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    color: #667eea;
    transition: all 0.3s ease;
}
.admin-tab.active {
    background: #667eea;
    color: white;
}
.admin-content {
    display: none;
}
.admin-content.active {
    display: block;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}
.stat-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}
.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #667eea;
}
.stat-label {
    color: #666;
    margin-top: 5px;
}
.results-table {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    overflow: hidden;
}
.table-header {
    background: #667eea;
    color: white;
    padding: 15px;
    font-weight: bold;
}
.table-content {
    max-height: 600px;
    overflow-y: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}
th {
    background: #667eea;
    color: white;
    position: sticky;
    top: 0;
}
tr:hover {
    background: rgba(102, 126, 234, 0.1);
}
.status-badge {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: bold;
}
.status-completed {
    background: rgba(39, 174, 96, 0.2);
    color: #27ae60;
}
.status-in-progress {
    background: rgba(243, 156, 18, 0.2);
    color: #f39c12;
}
.status-violations {
    background: rgba(231, 76, 60, 0.2);
    color: #e74c3c;
}
/* Question Management Styles */
.question-form {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}
.question-form h3 {
    color: #333;
    margin-bottom: 20px;
}
.question-form textarea {
    width: 100%;
    min-height: 80px;
    padding: 12px;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 8px;
    font-size: 1rem;
    resize: vertical;
    font-family: inherit;
}
.options-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin: 20px 0;
}
.option-input {
    display: flex;
    align-items: center;
    gap: 10px;
}
.option-input input[type="text"] {
    flex: 1;
    padding: 10px;
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 6px;
}
.option-input input[type="radio"] {
    transform: scale(1.2);
}
.questions-list {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    overflow: hidden;
}
.question-item {
    padding: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}
.question-item:last-child {
    border-bottom: none;
}
.question-item h4 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1.1rem;
}
.question-options {
    margin: 10px 0;
    padding-left: 20px;
}
.question-options li {
    margin: 5px 0;
    color: #666;
}
.question-options li.correct {
    color: #27ae60;
    font-weight: bold;
}
.question-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}
.btn-small {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: bold;
}
.btn-edit {
    background: #f39c12;
    color: white;
}
.btn-delete {
    background: #e74c3c;
    color: white;
}
/* Warning and Prompt Styles */
.warning-overlay, .fullscreen-prompt {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}
.warning-modal, .prompt-content {
    background: white;
    padding: 30px;
    border-radius: 12px;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.warning-title {
    font-size: 1.8rem;
    color: #e74c3c;
    margin-bottom: 15px;
    font-weight: bold;
}
.warning-text {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 20px;
}
.status-indicator {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: bold;
    z-index: 1000;
}
.status-secure {
    background: rgba(39, 174, 96, 0.9);
    color: white;
}
.status-warning {
    background: rgba(243, 156, 18, 0.9);
    color: white;
}
.filters {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}
.filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.filter-group label {
    font-size: 0.9rem;
    color: #666;
    font-weight: 500;
}
.filter-group select, .filter-group input {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.9rem;
}
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    .quiz-info, .admin-header {
        flex-direction: column;
        gap: 10px;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .filters {
        flex-direction: column;
        align-items: stretch;
    }
    .options-container {
        grid-template-columns: 1fr;
    }
    table {
        font-size: 0.85rem;
    }
}