/* Стили для групп участников */
.groups-section {
    margin-top: 2rem;
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.groups-section .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #f3f4f6;
}

.groups-section .section-header h3 {
    margin: 0;
    color: var(--text-dark);
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.add-group-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

.add-group-btn:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
}

.add-group-btn:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.add-group-btn:disabled:hover {
    background: #9ca3af;
    transform: none;
    box-shadow: none;
}

.group-info-box {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    color: #0369a1;
}

.group-info-box p {
    margin: 0;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.group-info-box i {
    color: #3b82f6;
}

.groups-container {
    min-height: 100px;
}

.group-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    transition: all 0.2s ease;
}

.group-card:hover {
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
}

.group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.group-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1rem;
}

.group-name i {
    color: var(--primary);
    font-size: 1.1rem;
}

.group-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.edit-group-btn,
.remove-group-btn {
    border: none;
    border-radius: 6px;
    width: 28px;
    height: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    transition: all 0.2s ease;
    color: white;
}

.edit-group-btn {
    background: #3b82f6;
}

.edit-group-btn:hover {
    background: #2563eb;
    transform: scale(1.05);
}

.remove-group-btn {
    background: #ef4444;
}

.remove-group-btn:hover {
    background: #dc2626;
    transform: scale(1.05);
}

.group-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.group-payer,
.group-members {
    font-size: 0.875rem;
    color: var(--text-medium);
}

.group-created {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 0.25rem;
    padding-top: 0.5rem;
    border-top: 1px solid #e2e8f0;
}

/* Индикаторы групп в карточках участников */
.group-indicator {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    margin-top: 0.5rem;
}

.group-indicator i {
    font-size: 0.7rem;
}

/* Модальные окна */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
    animation: modalFadeIn 0.3s ease-out;
}

.modal-content {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid #f1f5f9;
}

.modal-header h3 {
    margin: 0;
    color: var(--text-dark);
    font-size: 1.25rem;
    font-weight: 600;
}

.close-btn {
    background: #f1f5f9;
    border: none;
    border-radius: 8px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-medium);
}

.close-btn:hover {
    background: #e2e8f0;
    color: var(--text-dark);
    transform: scale(1.1);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding: 1rem 1.5rem 1.5rem;
    border-top: 1px solid #f1f5f9;
    background: #fafafa;
    border-radius: 0 0 16px 16px;
}

.cancel-btn {
    background: #f3f4f6;
    color: var(--text-medium);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.cancel-btn:hover {
    background: #e5e7eb;
    color: var(--text-dark);
}

.save-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

.save-btn:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.875rem;
}

.form-group input, 
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Стили для диалога создания группы */
.checkboxes-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    max-height: 200px;
    overflow-y: auto;
    padding: 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    background: #fafafa;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
    border: 1px solid #e5e7eb;
}

.checkbox-label:hover {
    background: #f0f9ff;
    border-color: #10b981;
}

.checkbox-label.checked {
    background: #ecfdf5;
    border-color: #10b981;
    color: #047857;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
    accent-color: #10b981;
}

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

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

/* Модальное окно для разбивки групп */
.modal-content.large {
    max-width: 800px;
    width: 90%;
}

.groups-breakdown {
    display: grid;
    gap: 1.5rem;
}

.group-breakdown-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1.5rem;
}

.group-breakdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e2e8f0;
}

.group-breakdown-header h4 {
    margin: 0;
    color: var(--text-dark);
    font-size: 1.125rem;
}

.group-total {
    font-size: 1.25rem;
    font-weight: 600;
}

.group-total.positive {
    color: var(--success);
}

.group-total.negative {
    color: var(--danger);
}

.group-breakdown-details p {
    margin: 0.5rem 0;
    color: var(--text-medium);
}

.individual-balances {
    margin-top: 1rem;
    background: white;
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
}

.individual-balances h5 {
    margin: 0 0 0.75rem 0;
    color: var(--text-dark);
    font-size: 0.875rem;
    font-weight: 600;
}

.balance-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f1f5f9;
}

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

.balance-item span:first-child {
    color: var(--text-medium);
    font-size: 0.875rem;
}

.balance-item span:last-child {
    font-weight: 600;
    font-size: 0.875rem;
}

/* Кнопка показа разбивки по группам в сводке */
.group-breakdown-btn {
    background: var(--secondary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    margin-top: 1rem;
}

.group-breakdown-btn:hover {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* Адаптивность */
@media (max-width: 768px) {
    .groups-section .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .group-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .remove-group-btn {
        align-self: flex-end;
        margin-top: -1rem;
    }
    
    .checkboxes-container {
        grid-template-columns: 1fr;
    }
    
    .modal-content.large {
        width: 95%;
        max-height: 90vh;
        overflow-y: auto;
    }
    
    .group-breakdown-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* Анимация появления группы */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.group-card {
    animation: fadeInUp 0.3s ease-out;
}

/* Состояния загрузки */
.groups-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--text-medium);
}

.groups-loading i {
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}