:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f9fafb;
    --card-bg: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding-bottom: 2rem;
}

/* Navbar */
.navbar {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: all 0.2s;
}

.nav-link:hover {
    background: var(--bg-color);
}

.nav-user {
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
}

.btn-login, .btn-register {
    padding: 0.5rem 1.5rem;
}

.btn-login {
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-register {
    background: var(--primary-color);
    color: white;
}

.btn-logout {
    color: var(--danger-color);
}

.language-switcher {
    display: flex;
    gap: 0.25rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    padding: 0.25rem;
}

.lang-btn {
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.lang-btn.active {
    background: var(--primary-color);
    color: white;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #6366f1 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
}

/* Quiz Grid */
.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.quiz-card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.3s;
}

.quiz-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.quiz-card-header {
    background: var(--primary-color);
    color: white;
    padding: 1.5rem;
}

.quiz-card-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.quiz-card-body {
    padding: 1.5rem;
}

.quiz-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    min-height: 3rem;
}

.quiz-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.quiz-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.quiz-card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.375rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-color);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-block {
    display: block;
    width: 100%;
}

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

/* Auth Forms */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
    padding: 2rem 0;
}

.auth-card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-link {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-secondary);
}

.auth-link a {
    color: var(--primary-color);
    text-decoration: none;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.625rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* Alert */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 500;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background: #fef2f2;
    color: var(--danger-color);
    border: 1px solid #fecaca;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Table */
.table-container {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    overflow-x: auto;
}

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

.data-table thead {
    background: var(--bg-color);
}

.data-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
}

.data-table td {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

.actions-cell {
    display: flex;
    gap: 0.5rem;
}

/* Quiz Taking */
.quiz-container {
    max-width: 800px;
    margin: 2rem auto;
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.quiz-header {
    background: var(--primary-color);
    color: white;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.quiz-header h2 {
    margin: 0;
}

.timer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.progress-bar {
    padding: 1rem 2rem;
    background: var(--bg-color);
}

#progress-indicators {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.progress-indicator {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid transparent;
}

.progress-indicator.active {
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.progress-indicator.answered {
    background: var(--success-color);
}

.question-container {
    padding: 2rem;
    min-height: 300px;
}

.question-number {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.question-text {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.choices-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.choice-label {
    display: flex;
    align-items: center;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.choice-label:hover {
    border-color: var(--primary-color);
    background: var(--bg-color);
}

.choice-label input[type="radio"] {
    margin-right: 1rem;
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

.choice-label input[type="radio"]:checked {
    accent-color: var(--primary-color);
}

.choice-text {
    flex: 1;
}

.quiz-navigation {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Results */
.result-container {
    max-width: 900px;
    margin: 2rem auto;
}

.result-header {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

.result-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.result-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.5rem;
}

.result-icon {
    font-size: 2rem;
}

.result-info {
    display: flex;
    flex-direction: column;
}

.result-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.answers-review {
    margin-bottom: 2rem;
}

.answers-review h3 {
    margin-bottom: 1rem;
}

.answer-item {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--border-color);
}

.answer-item.correct {
    border-left-color: var(--success-color);
}

.answer-item.incorrect {
    border-left-color: var(--danger-color);
}

.answer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.answer-header h4 {
    margin: 0;
}

.answer-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.correct-badge {
    background: #d1fae5;
    color: var(--success-color);
}

.incorrect-badge {
    background: #fee2e2;
    color: var(--danger-color);
}

.skipped-badge {
    background: #fef3c7;
    color: var(--warning-color);
}

.answer-question {
    font-weight: 600;
    margin-bottom: 1rem;
}

.answer-details {
    color: var(--text-secondary);
}

.answer-details p {
    margin-bottom: 0.5rem;
}

.wrong-answer {
    color: var(--danger-color);
    font-weight: 600;
}

.right-answer {
    color: var(--success-color);
    font-weight: 600;
}

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Questions Management */
.questions-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.questions-list {
    margin-top: 1rem;
}

.question-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.question-actions {
    display: flex;
    gap: 0.5rem;
}

.question-text {
    font-weight: 600;
    margin-bottom: 1rem;
}

.choices-list {
    list-style: none;
    padding-left: 0;
}

.choices-list li {
    padding: 0.5rem 1rem;
    margin-bottom: 0.5rem;
    background: var(--bg-color);
    border-radius: 0.375rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.choices-list li.correct-choice {
    background: #d1fae5;
    border: 1px solid var(--success-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    overflow-y: auto;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 0.75rem;
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    margin: auto;
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

/* Lock body scroll when modal is open */
body.modal-open {
    overflow: hidden;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.choice-item {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: center;
}

.choice-input {
    width: 100%;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    padding: 0.5rem 0.75rem;
    background: var(--bg-color);
    border-radius: 0.375rem;
}

.checkbox-label input[type="radio"] {
    margin: 0;
}

.btn-remove {
    background: var(--danger-color);
    color: white;
    border: none;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: all 0.2s;
}

.btn-remove:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* Statistics */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.stats-card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    padding: 2rem;
}

.stats-card h3 {
    margin-bottom: 1rem;
}

.stats-info {
    margin-bottom: 1.5rem;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    font-weight: 700;
    color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    margin-top: auto;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 0.8s ease-out 0.2s backwards;
}

.animate-slide-up {
    animation: slideUp 0.5s ease-out backwards;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .nav-menu {
        width: 100%;
        justify-content: center;
    }

    .quiz-navigation {
        flex-direction: column;
    }

    .quiz-navigation button {
        width: 100%;
    }

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

    .form-actions .btn {
        width: 100%;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .result-summary {
        grid-template-columns: 1fr;
    }

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

    .actions-cell .btn {
        width: 100%;
    }
}

/* Quiz Creator Styles */
.quiz-creator-container {
    max-width: 1000px;
    margin: 2rem auto;
}

.quiz-creator-card {
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.quiz-creator-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #6366f1 100%);
    color: white;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.quiz-creator-header h2 {
    margin: 0;
    font-size: 1.75rem;
}

.quiz-creator-header .btn {
    color: white;
    border-color: white;
}

.quiz-basic-info,
.quiz-settings {
    padding: 2rem;
    border-bottom: 2px solid var(--bg-color);
}

.quiz-basic-info h3,
.quiz-settings h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.25rem;
}

.form-hint {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.form-actions-sticky {
    position: sticky;
    bottom: 0;
    background: var(--card-bg);
    padding: 1.5rem 2rem;
    border-top: 2px solid var(--border-color);
    box-shadow: 0 -4px 6px rgba(0, 0, 0, 0.05);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    width: 100%;
}

.questions-section {
    padding: 2rem;
}

.questions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.questions-title-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.questions-header h3 {
    margin: 0;
    font-size: 1.5rem;
}

.question-counter {
    font-size: 1rem;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    background: var(--bg-color);
    border-radius: 0.5rem;
    border: 2px solid var(--border-color);
}

.question-counter strong {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.question-card {
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all 0.2s;
}

.question-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.question-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.question-number-badge {
    width: 3rem;
    height: 3rem;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.question-meta {
    flex: 1;
    min-width: 200px;
}

.question-meta h4 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
}

.points-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--warning-color);
    color: white;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.question-actions {
    display: flex;
    gap: 0.5rem;
}

.question-text {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.choice-item {
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.choice-letter {
    width: 1.5rem;
    height: 1.5rem;
    background: var(--secondary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    flex-shrink: 0;
}

.choice-item.correct-choice {
    background: #d1fae5;
    border-color: var(--success-color);
}

.choice-item.correct-choice .choice-letter {
    background: var(--success-color);
}

.empty-questions {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--bg-color);
    border-radius: 0.75rem;
    border: 2px dashed var(--border-color);
}

.empty-questions .empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.modal-large {
    max-width: 850px;
}

.modal-confirm {
    max-width: 500px;
}

/* Enhanced Result Page */
.result-page {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.result-hero {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.result-emoji {
    font-size: 5rem;
    margin-bottom: 1rem;
    animation: bounceIn 0.6s ease-out;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.result-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.result-title.excellent {
    color: var(--success-color);
}

.result-title.good {
    color: #3b82f6;
}

.result-title.practice {
    color: var(--warning-color);
}

.result-quiz-name {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.result-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-stat-card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.2s;
}

.result-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.percentage-high {
    color: var(--success-color);
}

.percentage-medium {
    color: #3b82f6;
}

.percentage-low {
    color: var(--warning-color);
}

@media (max-width: 768px) {
    .result-hero {
        padding: 2rem 1rem;
    }

    .result-emoji {
        font-size: 3.5rem;
    }

    .result-title {
        font-size: 1.75rem;
    }

    .result-summary-grid {
        grid-template-columns: 1fr;
    }

    .question-card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .question-actions {
        width: 100%;
    }

    .question-actions button {
        flex: 1;
    }

    .questions-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .questions-header button {
        width: 100%;
    }
}

/* Custom Notifications */
#notification-container {
    position: fixed;
    top: 5rem;
    right: 1rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 400px;
}

.custom-notification {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--card-bg);
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease-out;
}

.custom-notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification-icon {
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    flex-shrink: 0;
}

.notification-message {
    flex: 1;
    font-weight: 500;
}

.notification-success {
    border-left: 4px solid var(--success-color);
}

.notification-success .notification-icon {
    background: var(--success-color);
    color: white;
}

.notification-error {
    border-left: 4px solid var(--danger-color);
}

.notification-error .notification-icon {
    background: var(--danger-color);
    color: white;
}

.notification-warning {
    border-left: 4px solid var(--warning-color);
}

.notification-warning .notification-icon {
    background: var(--warning-color);
    color: white;
}

.notification-info {
    border-left: 4px solid var(--primary-color);
}

.notification-info .notification-icon {
    background: var(--primary-color);
    color: white;
}

/* Attempt Info */
.attempt-info {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-align: center;
}

@media (max-width: 768px) {
    #notification-container {
        right: 0.5rem;
        left: 0.5rem;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .quiz-card-header,
    .quiz-card-body,
    .quiz-card-footer {
        padding: 1rem;
    }

    .question-container {
        padding: 1rem;
    }

    .quiz-header {
        padding: 1rem;
    }

    #progress-indicators {
        justify-content: center;
    }

    .quiz-creator-header {
        padding: 1.5rem;
    }

    .quiz-basic-info,
    .quiz-settings,
    .questions-section {
        padding: 1.5rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .choice-item {
        grid-template-columns: 1fr;
    }

    .checkbox-label {
        justify-content: center;
    }
}