/* ========== 코치 버튼 ========== */
#coachBtnGroup {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.coach-btn {
    padding: 8px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 20px;
    background: white;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
    font-weight: 500;
    color: #333;
}

.coach-btn:hover {
    border-color: #4CAF50;
    background: #f1f8e9;
}

.coach-btn.active {
    background: #4CAF50;
    color: white;
    border-color: #4CAF50;
}

/* ========== 코치 섹션 ========== */
.coach-section {
    margin-bottom: 15px;
    border-radius: 12px;
    overflow: hidden;
    background: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.coach-section-header {
    background: linear-gradient(135deg, #f5f5f5, #e8e8e8);
    padding: 12px 15px;
    cursor: pointer;
    transition: all 0.3s;
    user-select: none;
}

.coach-section-header:hover {
    background: linear-gradient(135deg, #e8e8e8, #d8d8d8);
}

.coach-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toggle-icon {
    font-size: 14px;
    color: #666;
    transition: transform 0.3s;
    display: inline-block;
    width: 20px;
}

.coach-section.collapsed .coach-members-list {
    display: none;
}

.coach-members-list {
    padding: 10px;
    display: block;
}

.coach-count {
    background: var(--primary-color);
    color: white;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
}