/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing);
    border: none;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    min-height: 40px;
}

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

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.qr-scanner-section {
    position: relative;
}

#voltarAluno {
    position: absolute ;
    top: 19%;
    left: 23%;
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-200);
    border-color: var(--gray-400);
    transform: translateY(-1px);
}

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

.btn-success:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-warning:hover:not(:disabled) {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-error:hover:not(:disabled) {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-info:hover:not(:disabled) {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: var(--spacing) var(--spacing-lg);
    font-size: 1.125rem;
    min-height: 56px;
    border-radius: var(--radius-md);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    min-height: 32px;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: var(--transition);
    background: var(--white);
}



.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-group input[type="file"] {
    padding: var(--spacing-xs);
    border-style: dashed;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: var(--spacing-xs);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing) var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    gap:0.9rem
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius);
    transition: var(--transition);
}

.close-btn:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    padding: var(--spacing) var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

/* Camera Modal */
.camera-modal-content {
    max-width: 600px;
}

.camera-container {
    position: relative;
    background: var(--gray-900);
    border-radius: var(--radius);
    overflow: hidden;
    margin: var(--spacing-lg);
}

.camera-container video,
.camera-container canvas {
    width: 100%;
    height: auto;
    display: block;
}

.camera-preview {
    position: relative;
}

.camera-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.camera-controls {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    padding: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Lists and Items */
.materials-list,
.quizzes-list,
.classes-grid,
.help-requests-list,
.reports-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing);
}

.materials-list{
    justify-content: center;
    align-items: center;
}

.material-item,
.quiz-item,
.class-card,
.attendance-item,
.help-request-item,
.report-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    transition: var(--transition);
}

.material-item:hover,
.quiz-item:hover,
.class-card:hover,
.attendance-item:hover,
.help-request-item:hover,
.report-item:hover {
    background: var(--white);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-sm);
}

.material-item i,
.quiz-item i,
.class-card i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-right: var(--spacing);
}

.quiz-info,
.class-info {
    flex: 1;
}

.quiz-info h4,
.class-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.quiz-info p,
.class-info p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* Class Cards */
.classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.class-card {
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-lg);
    background: var(--white);
    box-shadow: var(--shadow);
    border-radius: var(--radius-lg);
}

.class-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing);
}

.class-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.class-subject {
    color: var(--primary-blue);
    font-weight: 500;
    font-size: 0.875rem;
}

.class-menu {
    position: relative;
}

.menu-btn {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius);
    transition: var(--transition);
}

.menu-btn:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.menu-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 150px;
    z-index: 10;
    display: none;
}

.menu-dropdown.active {
    display: block;
    animation: fadeIn 0.2s ease-out;
}

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

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

.menu-item {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing);
    border: none;
    background: none;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray-700);
}

.menu-item:hover {
    background: var(--gray-50);
    color: var(--gray-900);
}

.menu-item.danger {
    color: var(--error);
}

.menu-item.danger:hover {
    background: #fef2f2;
    color: var(--error);
}

.class-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing);
}

.class-detail {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gray-600);
    font-size: 0.875rem;
}

.class-detail i {
    color: var(--gray-400);
    width: 16px;
}

/* Temp Link Result */
.temp-link-result {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.link-info {
    margin-bottom: var(--spacing-lg);
}

.link-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing);
}

.link-display {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.link-display input {
    flex: 1;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    padding: var(--spacing-sm);
    font-family: monospace;
    font-size: 0.875rem;
}

.link-expiry {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.qr-code {
    text-align: center;
}

.qr-code h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing);
}

.qr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: var(--white);
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    color: var(--gray-500);
}

.qr-placeholder i {
    font-size: 4rem;
    margin-bottom: var(--spacing);
}

/* Quiz Questions */
.quiz-questions {
    margin-top: var(--spacing-lg);
}

.quiz-questions h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing);
}

.question-item {
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing);
}

.question-item .form-group label {
    font-weight: 600;
    color: var(--gray-800);
}

.question-item .option {
    margin-bottom: var(--spacing-xs);
}

.quiz-actions {
    display: flex;
    gap: var(--spacing);
    justify-content: center;
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Attendance Records */
.attendance-filter {
    display: flex;
    gap: var(--spacing);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.attendance-filter .form-group {
    flex: 1;
    min-width: 200px;
    margin-bottom: 0;
}

.attendance-record {
    display: flex;
    align-items: center;
    gap: var(--spacing);
    padding: var(--spacing);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-sm);
}


.attendance-info {
    flex: 1;
}

.attendance-info h4 {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.attendance-info p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.attendance-status {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
}

.attendance-status.present {
    background: #dcfce7;
    color: #166534;
}

.attendance-status.absent {
    background: #fee2e2;
    color: #991b1b;
}

/* Help Requests and Reports */
.help-request-item,
.report-item {
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.request-header,
.report-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing);
}

.request-title,
.report-title {
    font-weight: 600;
    color: var(--gray-900);
}

.request-date,
.report-date {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.request-content,
.report-content {
    color: var(--gray-700);
    line-height: 1.6;
    margin-bottom: var(--spacing);
}

.request-actions,
.report-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* Responsive adjustments for components */
@media (max-width: 768px) {
    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .modal-content {
        margin: var(--spacing-sm);
        max-width: calc(100% - 2 * var(--spacing-sm));
    }

    .camera-controls {
        flex-direction: column;
    }

    .camera-controls .btn {
        width: 100%;
    }

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

    .attendance-filter {
        flex-direction: column;
    }

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

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

    .link-display {
        flex-direction: column;
    }

    .request-actions,
    .report-actions {
        flex-direction: column;
    }

    .request-actions .btn,
    .report-actions .btn {
        width: 100%;
    }
}

@media (max-width: 1250px) {
    #voltarAluno {
        top: 19%;
        left: 11%;
    }
}
@media (max-width: 1550px) {
    #voltarAluno {
        top: 19%;
        left: 15%;
    }
}



@media(max-width: 900px) {
    #voltarAluno {
        position: inherit;
        width:auto;
    }
}