/* ========================================
   COMPONENTES REUTILIZÁVEIS
   ======================================== */

/* Toast/Notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--surface-color);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    animation: slideInRight 0.3s ease;
    z-index: 2000;
    border-left: 4px solid var(--primary-color);
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--danger-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

.toast-icon {
    font-size: 1.5rem;
}

.toast-message {
    flex: 1;
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition-base);
    border-radius: 999px;
}

/* Cards com animação */
.card {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Divider */
.divider {
    height: 1px;
    background-color: var(--border-color);
    margin: var(--spacing-xl) 0;
}

/* Info Box */
.info-box {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background-color: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.empty-icon {
    font-size: 4rem;
    opacity: 0.3;
    margin-bottom: var(--spacing-md);
}

.empty-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.empty-description {
    color: var(--text-muted);
}

/* Banner Preview */
.banner-preview-container {
    margin-top: var(--spacing-md);
}

.banner-preview {
    height: 120px;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    background-size: cover;
    background-position: center;
    margin-bottom: var(--spacing-sm);
}

.banner-preview.gradient-1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.banner-preview.gradient-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.banner-preview.gradient-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.banner-preview.gradient-4 {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.banner-preview.gradient-5 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

/* Gradient items na galeria */
.gradient-item.gradient-1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-item.gradient-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.gradient-item.gradient-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.gradient-item.gradient-4 {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.gradient-item.gradient-5 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.btn-remove-banner {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.btn-remove-banner:hover {
    background-color: #dc2626;
    transform: translateY(-1px);
}

.banner-options {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.btn-banner-option {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.btn-banner-option:hover {
    border-color: var(--primary-color);
    background-color: var(--surface-color);
    transform: translateY(-2px);
}

/* Gradient Gallery */
.gradient-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.gradient-item {
    height: 100px;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 3px solid transparent;
    transition: all var(--transition-fast);
    position: relative;
}

.gradient-item:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.gradient-item::after {
    content: attr(data-name);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: var(--spacing-sm);
    font-size: 0.8rem;
    text-align: center;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Photo Options */
.photo-options {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.btn-photo-option {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.btn-photo-option:hover {
    border-color: var(--primary-color);
    background-color: var(--surface-color);
    transform: translateY(-2px);
}

/* Photo Preview */
.photo-preview {
    position: relative;
    width: 100%;
    max-width: 300px;
    margin: var(--spacing-md) auto;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--border-color);
}

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

.btn-remove-photo {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--danger-color);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.btn-remove-photo:hover {
    transform: scale(1.1);
}

/* Photo Gallery */
.photo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-md);
    max-height: 400px;
    overflow-y: auto;
}

/* Banner gallery específico */
#banner-gallery {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}

.photo-gallery-item {
    cursor: pointer;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 3px solid transparent;
    transition: all var(--transition-fast);
    aspect-ratio: 1;
}

.photo-gallery-item:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.photo-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Modals de foto/câmera/gradiente - z-index maior para ficarem acima de outros modals */
#photo-gallery-modal,
#banner-gallery-modal,
#gradient-modal,
#camera-modal {
    z-index: 1100 !important;
}

/* Camera */
.camera-modal-content {
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
}

.camera-modal-content .modal-body {
    overflow: hidden;
    padding: var(--spacing-lg);
}

.camera-container {
    width: 100%;
    background-color: var(--bg-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    max-height: 60vh;
}

.camera-container video {
    width: 100%;
    height: auto;
    display: block;
    max-height: 60vh;
    object-fit: contain;
}

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

.camera-controls .btn {
    flex: 1;
    min-width: 100px;
    max-width: 150px;
}

/* Study Photo in History */
.history-photo {
    width: 100%;
    max-width: 300px;
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
    cursor: pointer;
    transition: all 0.3s ease;
}

.history-photo:hover {
    opacity: 0.9;
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Study Title */
.history-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

/* Group Banner */
.group-banner {
    height: 150px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    background-size: cover;
    background-position: center;
}

/* Gradientes no banner do grupo */
.group-banner.gradient-1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Photo Lightbox */
.photo-lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
    animation: fadeIn 0.3s ease;
}

.photo-lightbox.active {
    display: flex;
}

.photo-lightbox img {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    cursor: default;
    animation: zoomIn 0.3s ease;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10001;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.group-banner.gradient-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.group-banner.gradient-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.group-banner.gradient-4 {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.group-banner.gradient-5 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.group-card-with-banner {
    padding: 0;
    overflow: hidden;
}

.group-card-content {
    padding: var(--spacing-lg);
}

/* Modal de Conquistas */
.achievements-modal-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: 500px;
    overflow-y: auto;
}

.achievement-item-modal {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-color);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--border-color);
}

.achievement-item-modal.earned {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1), rgba(245, 158, 11, 0.1));
    border-left-color: #f59e0b;
}

.achievement-item-modal.locked {
    opacity: 0.6;
    background-color: var(--bg-color);
    border-left-color: var(--border-color);
}

.achievement-item-modal.locked .achievement-icon-large {
    filter: grayscale(100%);
    opacity: 0.5;
}

.achievement-icon-large {
    font-size: 2.5rem;
    min-width: 60px;
    text-align: center;
}

.achievement-details {
    flex: 1;
}

.achievement-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.achievement-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.achievement-status {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

.achievement-status.earned {
    color: var(--success-color);
    font-weight: 600;
}

.achievement-status.locked {
    color: var(--text-muted);
}

/* Modal de Classificações */
.modal-large {
    max-width: 700px;
}

.modal-period-info {
    background-color: var(--bg-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.period-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.period-date-range {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.modal-ranking-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: 500px;
}

.modal-ranking-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-ranking-item:hover {
    background-color: var(--border-color);
    transform: translateX(4px);
}

.modal-ranking-position {
    font-size: 1.75rem;
    font-weight: 700;
    min-width: 50px;
    text-align: center;
    color: var(--text-secondary);
}

.modal-ranking-item:nth-child(1) .modal-ranking-position {
    color: #fbbf24;
    font-size: 2rem;
}

.modal-ranking-item:nth-child(2) .modal-ranking-position {
    color: #94a3b8;
    font-size: 1.85rem;
}

.modal-ranking-item:nth-child(3) .modal-ranking-position {
    color: #cd7f32;
    font-size: 1.85rem;
}

.modal-ranking-avatar {
    font-size: 1.5rem;
}

.modal-ranking-info {
    flex: 1;
}

.modal-ranking-name {
    font-weight: 600;
    font-size: 1.1rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.modal-ranking-streak {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.modal-ranking-minutes {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: right;
    min-width: 100px;
}

.modal-ranking-minutes-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: normal;
}

.modal-info-box {
    background-color: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--text-secondary);
}

.modal-groups-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.modal-group-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.modal-group-item:hover {
    background-color: var(--surface-color);
    border-color: var(--primary-color);
    transform: translateX(4px);
}

.modal-group-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.modal-group-name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
}

.modal-group-stats {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.modal-group-arrow {
    font-size: 1.5rem;
    color: var(--text-muted);
}


/* ========================================
   MODAL DE COMPARTILHAMENTO
   ======================================== */
.share-code-display {
    text-align: center;
    padding: var(--spacing-xl);
}

.share-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.share-code-box {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.share-code-text {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    letter-spacing: 0.3rem;
    font-family: 'Courier New', monospace;
}

.share-code-display .btn-large {
    width: 100%;
    max-width: 300px;
}

/* ========================================
   MODAL DE COMPARTILHAMENTO
   ======================================== */
.modal-small .modal-content {
    max-width: 450px;
}

.code-display-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin: var(--spacing-md) 0;
}

.code-display-box .code-text {
    font-size: 1rem;
    font-weight: 600;
    color: white;
    font-family: 'Courier New', monospace;
    flex: 1;
    word-break: break-all;
    line-height: 1.4;
}

.btn-icon-small {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.btn-icon-small:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.btn-icon-small:active {
    transform: scale(0.95);
}

.share-instructions {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
    margin-top: var(--spacing-md);
    line-height: 1.5;
}

.share-code-display label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

/* ========================================
   MODAL DE DETALHES DO GRUPO
   ======================================== */
.group-details-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.detail-section {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-lg);
}

.detail-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.detail-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
}

.detail-value {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 500;
}

.detail-description {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    font-weight: 400;
    font-style: italic;
}

.detail-code-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-color);
}

.detail-code {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.2rem;
    font-family: 'Courier New', monospace;
    flex: 1;
}

.btn-copy-detail {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-copy-detail:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-copy-detail:active {
    transform: translateY(0);
}

.detail-members-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.detail-member-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-color);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    position: relative;
}

.btn-remove-member {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
    opacity: 0;
}

.detail-member-item:hover .btn-remove-member {
    opacity: 1;
}

.btn-remove-member:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    transform: scale(1.1);
}

.detail-member-item.creator .btn-remove-member {
    display: none;
}

.detail-member-avatar {
    /* Estilos agora vêm da classe genérica .avatar em style.css */
}

.detail-member-name {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.detail-member-item.creator {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1), rgba(245, 158, 11, 0.1));
    border-color: #f59e0b;
}

.detail-member-badge {
    font-size: 0.7rem;
    background-color: #f59e0b;
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
    margin-left: auto;
}

.detail-actions {
    margin-top: var(--spacing-md);
}

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

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

.btn-danger:hover {
    background-color: #dc2626;
}
/* ========================================
   DROPDOWN MENU
   ======================================== */

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    margin-top: 8px;
    padding: var(--spacing-xs) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1001;
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    text-align: left;
    gap: var(--spacing-sm);
}

.dropdown-item:hover {
    background-color: var(--bg-color);
}

.dropdown-item:active {
    background-color: var(--border-color);
}

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

.dropdown-item.danger:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

.dropdown-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

/* ========================================
   MODAL DE EDIÇÃO DE PERFIL
   ======================================== */

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

.profile-avatar-section {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.profile-avatar-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.profile-avatar-large {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    background-size: cover;
    background-position: center;
    position: relative;
}

.profile-avatar-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-upload-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    justify-content: center;
    align-items: center;
}

.btn-avatar-upload {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-avatar-upload:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-avatar-upload:active {
    transform: translateY(0);
}

.btn-avatar-remove {
    width: 36px;
    height: 36px;
    padding: 0;
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

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

.btn-avatar-remove:active {
    transform: scale(0.95);
}

.form-hint {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.password-form {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

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

.btn-secondary:hover {
    background-color: var(--border-color);
}
/* ========================================
   RESPONSIVIDADE - COMPONENTES
   ======================================== */

/* Tablets e telas médias */
@media (max-width: 1024px) {
    .gradient-gallery {
        grid-template-columns: repeat(3, 1fr);
    }

    .photo-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Smartphones e telas pequenas */
@media (max-width: 768px) {
    /* Toast */
    .toast {
        min-width: 250px;
        bottom: 100px;
        right: 10px;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .toast-icon {
        font-size: 1.25rem;
    }

    .toast-message {
        font-size: 0.9rem;
    }

    /* Botões */
    .btn-icon-small {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
        padding: 0;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Galerias */
    .gradient-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .gradient-item {
        height: 80px;
    }

    .photo-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    #banner-gallery {
        grid-template-columns: repeat(2, 1fr);
    }

    .photo-gallery-item {
        height: 120px;
    }

    /* Camera controls */
    .camera-modal-content {
        max-width: 95vw;
    }

    .camera-container {
        max-height: 50vh;
    }

    .camera-container video {
        max-height: 50vh;
    }

    .camera-controls {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .camera-controls .btn {
        flex: 1;
        min-width: unset;
        max-width: unset;
        width: 100%;
    }

    /* Ranking modal */
    .modal-ranking-list {
        gap: var(--spacing-sm);
        max-height: 400px;
    }

    .modal-ranking-item {
        padding: var(--spacing-sm) var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .modal-ranking-position {
        font-size: 1.5rem;
        min-width: 40px;
    }

    .modal-ranking-item:nth-child(1) .modal-ranking-position {
        font-size: 1.75rem;
    }

    .modal-ranking-item:nth-child(2) .modal-ranking-position,
    .modal-ranking-item:nth-child(3) .modal-ranking-position {
        font-size: 1.6rem;
    }

    .modal-ranking-avatar {
        font-size: 1.5rem;
    }

    .modal-ranking-name {
        font-size: 1rem;
    }

    .modal-ranking-streak {
        font-size: 0.85rem;
    }

    .modal-ranking-minutes {
        font-size: 1.3rem;
        min-width: 80px;
    }

    .modal-ranking-minutes-label {
        font-size: 0.7rem;
    }

    /* Detalhes do grupo */
    .detail-section {
        padding: var(--spacing-md);
    }

    .detail-label {
        font-size: 0.85rem;
    }

    .detail-value {
        font-size: 1rem;
    }

    /* Banner options */
    .banner-options {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .btn-banner-option {
        flex: 1;
        min-width: unset;
        font-size: 0.85rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    /* Photo options */
    .photo-options {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .btn-photo-option {
        flex: 1;
        font-size: 0.85rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    /* Avatar upload */
    .avatar-upload-section {
        flex-direction: column;
        text-align: center;
    }

    .avatar-preview {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .avatar-upload-buttons {
        flex-wrap: wrap;
        width: 100%;
    }

    .btn-avatar-upload {
        flex: 1;
        min-width: 120px;
        justify-content: center;
    }

    /* Dropdown/Menu */
    .user-menu {
        right: var(--spacing-sm);
        top: 60px;
        min-width: 180px;
    }

    .user-menu-item {
        padding: var(--spacing-md);
        font-size: 0.9rem;
    }

    /* Código do grupo */
    .code-display-box {
        padding: var(--spacing-md);
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .code-text {
        font-size: 1.5rem;
    }

    .share-instructions {
        font-size: 0.85rem;
    }
}

/* Smartphones pequenos */
@media (max-width: 480px) {
    /* Toast */
    .toast {
        min-width: calc(100vw - 20px);
        left: 10px;
        right: 10px;
        bottom: 90px;
    }

    /* Galerias */
    .gradient-gallery {
        grid-template-columns: repeat(2, 1fr);
    }

    .gradient-item {
        height: 70px;
    }

    .photo-gallery-item {
        height: 180px;
    }

    /* Banner options */
    .banner-options {
        flex-direction: column;
    }

    .btn-banner-option {
        width: 100%;
    }

    /* Ranking */
    .modal-ranking-item {
        padding: var(--spacing-sm);
        gap: var(--spacing-xs);
    }

    .modal-ranking-position {
        font-size: 1.3rem;
        min-width: 35px;
    }

    .modal-ranking-item:nth-child(1) .modal-ranking-position {
        font-size: 1.5rem;
    }

    .modal-ranking-avatar {
        font-size: 1.75rem;
    }

    .modal-ranking-name {
        font-size: 0.95rem;
    }

    .modal-ranking-minutes {
        font-size: 1.1rem;
        min-width: 70px;
    }

    /* Detalhes */
    .detail-section {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    /* Avatar */
    .avatar-preview {
        width: 70px;
        height: 70px;
        font-size: 1.75rem;
    }

    .btn-avatar-upload {
        width: 100%;
        min-width: auto;
    }

    /* Código */
    .code-text {
        font-size: 1.3rem;
        letter-spacing: 2px;
    }
}

/* Orientação landscape em mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .modal-ranking-list {
        max-height: 50vh;
    }

    .photo-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
    }

    #banner-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
    }

    .photo-gallery-item {
        height: 100px;
    }

    /* Banner e photo options em mobile */
    .banner-options,
    .photo-options {
        flex-direction: column;
    }

    .btn-banner-option,
    .btn-photo-option {
        width: 100%;
        min-width: unset;
    }
}

/* Privacy Toggle */
.privacy-toggle-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cbd5e1;
    transition: 0.3s;
    border-radius: 26px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--primary-color);
}

input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.privacy-label {
    font-weight: 500;
    color: var(--text-primary);
}

.privacy-description {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
}

/* ========================================
   SOLICITAÇÕES PENDENTES
   ======================================== */
.pending-requests-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: 60vh;
    overflow-y: auto;
    overflow-x: hidden;
}

.pending-request-item {
    background-color: var(--bg-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
}

.pending-request-item:hover {
    background-color: var(--border-color);
}

.pending-request-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--surface-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    background-size: cover;
    background-position: center;
}

.pending-request-info {
    flex: 1;
}

.pending-request-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.pending-request-email {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.pending-request-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-approve {
    background-color: var(--success-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-approve:hover {
    background-color: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-reject {
    background-color: var(--danger-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-reject:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.empty-pending-requests {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.empty-pending-requests .empty-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

/* Aguardando aprovação */
.waiting-approval-content {
    text-align: center;
    padding: var(--spacing-xl);
}

.waiting-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
}

.waiting-approval-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.waiting-approval-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.waiting-message {
    color: var(--text-primary);
    font-weight: 600;
}

/* ========================================
   MODAL DE CONFIRMAÇÃO
   ======================================== */
.confirm-content {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
}

.confirm-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    animation: pulse 0.6s ease-in-out;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.confirm-content p {
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.6;
    margin: 0;
    white-space: pre-line;
}

#confirm-modal .modal-footer {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

#confirm-modal .modal-footer .btn {
    min-width: 100px;
}

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

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

/* ========================================
   POMODORO TIMER
   ======================================== */

.pomodoro-timer {
    position: fixed;
    bottom: 90px;
    right: 20px;
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-lg);
    z-index: 1000;
    min-width: 200px;
    animation: slideInUp 0.3s ease;
}

@keyframes slideInUp {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.pomodoro-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.pomodoro-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.pomodoro-status {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.pomodoro-display {
    display: flex;
    justify-content: center;
    padding: var(--spacing-md) 0;
}

.pomodoro-circle {
    position: relative;
    width: 150px;
    height: 150px;
}

.pomodoro-progress {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.pomodoro-progress-bg {
    fill: none;
    stroke: var(--background-tertiary);
    stroke-width: 4;
}

.pomodoro-progress-bar {
    fill: none;
    stroke: var(--primary-color);
    stroke-width: 4;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 1s linear;
}

.pomodoro-time {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.pomodoro-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.pomodoro-session,
.pomodoro-total {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pomodoro-session span,
.pomodoro-total span {
    font-weight: 600;
    color: var(--text-primary);
}

/* Pomodoro Config Modal */
.pomodoro-info-card {
    background: var(--background-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.pomodoro-info-card p {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.pomodoro-description li {
    padding: var(--spacing-sm) 0;
    color: var(--text-primary);
    font-size: 0.95rem;
}

/* Responsive Pomodoro */
@media (max-width: 768px) {
    .pomodoro-timer {
        right: 10px;
        bottom: 70px;
        padding: var(--spacing-md);
    }

    .pomodoro-circle {
        width: 120px;
        height: 120px;
    }

    .pomodoro-time {
        font-size: 1.5rem;
    }
}

/* ========================================
   STUDY MODE SELECTOR
   ======================================== */

.study-mode-selector {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.mode-btn {
    flex: 1;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mode-btn:hover {
    background: var(--background-secondary);
    color: var(--text-primary);
}

.mode-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* ========================================
   PHOTO VIEWER MODAL
   ======================================== */

.modal-photo-viewer {
    max-width: 90vw;
    max-height: 90vh;
    background: transparent;
    box-shadow: none;
    padding: 0;
}

.modal-photo-viewer .modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
    transition: background 0.2s ease;
}

.modal-photo-viewer .modal-close:hover {
    background: rgba(0, 0, 0, 0.9);
}

.photo-viewer-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-viewer-container img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
    .modal-photo-viewer {
        max-width: 95vw;
        max-height: 95vh;
    }
    
    .modal-photo-viewer .modal-close {
        top: -35px;
        width: 35px;
        height: 35px;
        font-size: 1.3rem;
    }
}

/* ========================================
   CUSTOM CHECKBOX STYLING
   ======================================== */

/* Container do checkbox */
.form-group label:has(input[type="checkbox"]) {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    position: relative;
    padding-left: 35px;
    min-height: 24px;
    transition: all 0.2s ease;
}

/* Esconder checkbox padrão */
.form-group input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

/* Criar checkbox customizado */
.form-group label:has(input[type="checkbox"])::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 20px;
    width: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--surface-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Criar checkmark */
.form-group label:has(input[type="checkbox"])::after {
    content: "";
    position: absolute;
    left: 7px;
    top: 50%;
    transform: translateY(-50%) scale(0) rotate(45deg);
    width: 6px;
    height: 11px;
    border: solid white;
    border-width: 0 2.5px 2.5px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

/* Hover state */
.form-group label:has(input[type="checkbox"]):hover::before {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

/* Focus state */
.form-group input[type="checkbox"]:focus + label::before,
.form-group label:has(input[type="checkbox"]:focus)::before {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

/* Checked state */
.form-group input[type="checkbox"]:checked + label::before,
.form-group label:has(input[type="checkbox"]:checked)::before {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* Checkmark visível quando checked */
.form-group input[type="checkbox"]:checked + label::after,
.form-group label:has(input[type="checkbox"]:checked)::after {
    opacity: 1;
    transform: translateY(-50%) scale(1) rotate(45deg);
}

/* Disabled state */
.form-group input[type="checkbox"]:disabled + label,
.form-group label:has(input[type="checkbox"]:disabled) {
    cursor: not-allowed;
    opacity: 0.5;
}

.form-group input[type="checkbox"]:disabled + label::before,
.form-group label:has(input[type="checkbox"]:disabled)::before {
    background-color: var(--border-color);
    border-color: var(--border-color);
}

/* Animação de pulse ao clicar */
@keyframes checkboxPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(99, 102, 241, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }
}

.form-group input[type="checkbox"]:checked + label::before,
.form-group label:has(input[type="checkbox"]:checked)::before {
    animation: checkboxPulse 0.4s ease-out;
}

/* Responsivo para Lightbox */
@media (max-width: 768px) {
    .photo-lightbox img {
        max-width: 95%;
        max-height: 80vh;
    }
    
    .lightbox-close {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
}